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  • Change value of adjacent vertices and remove self loop

    - by StereoMatching
    Try to write a Karger’s algorithm with boost::graph example (first column is vertice, other are adjacent vertices): 1 2 3 2 1 3 4 3 1 2 4 4 2 3 assume I merge 2 to 1, I get the result 1 2 3 2 1 1 3 4 2 1 3 4 3 1 2 4 4 2 3 first question : How could I change the adjacent vertices("2" to "1") of vertice 1? my naive solution template<typename Vertex, typename Graph> void change_adjacent_vertices_value(Vertex input, Vertex value, Graph &g) { for (auto it = boost::adjacent_vertices(input, g); it.first != it.second; ++it.first){ if(*it.first == value){ *(it.first) = input; //error C2106: '=' : left operand must be l-value } } } Apparently, I can't set the value of the adjacent vertices to "1" by this way The result I want after "change_adjacent_vertices_value" 1 1 3 1 1 1 3 4 2 1 3 4 3 1 2 4 4 2 3 second question : How could I pop out the adjacent vertices? Assume I want to pop out the consecutive 1 from the vertice 1 The result I expected 1 1 3 1 3 4 2 1 3 4 3 1 2 4 4 2 3 any function like "pop_adjacent_vertex" could use?

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  • (again) i improve my question [closed]

    - by gcc
    Possible Duplicate: realizing number …how?? i hold input like that A is char pointer A[0]=n A[1]=j A[2]=n // i take (one number)+special char(s)+command(s) (like $ or #) from user A[3]=d // the input order can be changed like char(s)+number+command . // there is one number in A[] . // and every A[i] is important for me because what will i do in next step . // is determined by that input in A[h] or A[n] . // example . // when you see $ go before array do something . // when you see number go farad equation and use it in there A[j]=$ // (number can be pozitif or negatif . A[i]=14(any number) . . int func(int temp) { if(temp=='n') //..do something then return 10; if(temp=='j') return 11; if(temp=='d') return 12; if(/*........*/) // when temp find/realize number ,i wanna return 13; // in if statement, (instead of .....) what code should i write } how i can do } NOTE::please ,dont close my question ,when you close icannot edit it

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  • Errors when installing Open Office

    - by user109036
    I followed the first set of instructions on this page to install Open Office: How to install Open Office? However, the last step which says to change the CHMOD of a folder, I got an error saying that the directory does not exist. Open Office now appears in my Ubuntu start menu, but clicking on it does nothing. I tried a reboot. Below is what I could copy from my terminal. I am running the latest Ubuntu. I have not uninstalled Libreoffice as suggested somewhere. The reason is that in the Ubuntu software centre, Libre office appears to be made up of several components and I don't know which ones to remove (or all maybe?). They are Libreoffice Draw, Math, Writer, Calc. After this operation, 480 MB of additional disk space will be used. Do you want to continue [Y/n]? y Get:1 http://gb.archive.ubuntu.com/ubuntu/ quantal-updates/universe openjdk-6-jre-lib all 6b24-1.11.5-0ubuntu1~12.10.1 [6,135 kB] Get:2 http://ppa.launchpad.net/upubuntu-com/office/ubuntu/ quantal/main openoffice amd64 3.4~oneiric [321 MB] Get:3 http://gb.archive.ubuntu.com/ubuntu/ quantal/main ca-certificates-java all 20120721 [13.2 kB] Get:4 http://gb.archive.ubuntu.com/ubuntu/ quantal/main tzdata-java all 2012e-0ubuntu2 [140 kB] Get:5 http://gb.archive.ubuntu.com/ubuntu/ quantal/main java-common all 0.43ubuntu3 [61.7 kB] Get:6 http://gb.archive.ubuntu.com/ubuntu/ quantal-updates/universe openjdk-6-jre-headless amd64 6b24-1.11.5-0ubuntu1~12.10.1 [25.4 MB] Get:7 http://gb.archive.ubuntu.com/ubuntu/ quantal/main libgif4 amd64 4.1.6-9.1ubuntu1 [31.3 kB] Get:8 http://gb.archive.ubuntu.com/ubuntu/ quantal-updates/universe openjdk-6-jre amd64 6b24-1.11.5-0ubuntu1~12.10.1 [234 kB] Get:9 http://gb.archive.ubuntu.com/ubuntu/ quantal/main libatk-wrapper-java all 0.30.4-0ubuntu4 [29.8 kB] Get:10 http://gb.archive.ubuntu.com/ubuntu/ quantal/main libatk-wrapper-java-jni amd64 0.30.4-0ubuntu4 [31.1 kB] Get:11 http://gb.archive.ubuntu.com/ubuntu/ quantal/main xorg-sgml-doctools all 1:1.10-1 [12.0 kB] Get:12 http://gb.archive.ubuntu.com/ubuntu/ quantal/main x11proto-core-dev all 7.0.23-1 [744 kB] Get:13 http://gb.archive.ubuntu.com/ubuntu/ quantal/main libice-dev amd64 2:1.0.8-2 [57.6 kB] Get:14 http://gb.archive.ubuntu.com/ubuntu/ quantal/main libpthread-stubs0 amd64 0.3-3 [3,258 B] Get:15 http://gb.archive.ubuntu.com/ubuntu/ quantal/main libpthread-stubs0-dev amd64 0.3-3 [2,866 B] Get:16 http://gb.archive.ubuntu.com/ubuntu/ quantal/main libsm-dev amd64 2:1.2.1-2 [19.9 kB] Get:17 http://gb.archive.ubuntu.com/ubuntu/ quantal/main libxau-dev amd64 1:1.0.7-1 [10.2 kB] Get:18 http://gb.archive.ubuntu.com/ubuntu/ quantal/main libxdmcp-dev amd64 1:1.1.1-1 [26.9 kB] Get:19 http://gb.archive.ubuntu.com/ubuntu/ quantal/main x11proto-input-dev all 2.2-1 [133 kB] Get:20 http://gb.archive.ubuntu.com/ubuntu/ quantal/main x11proto-kb-dev all 1.0.6-2 [269 kB] Get:21 http://gb.archive.ubuntu.com/ubuntu/ quantal/main xtrans-dev all 1.2.7-1 [84.3 kB] Get:22 http://gb.archive.ubuntu.com/ubuntu/ quantal/main libxcb1-dev amd64 1.8.1-1ubuntu1 [82.6 kB] Get:23 http://gb.archive.ubuntu.com/ubuntu/ quantal/main libx11-dev amd64 2:1.5.0-1 [912 kB] Get:24 http://gb.archive.ubuntu.com/ubuntu/ quantal/main libx11-doc all 2:1.5.0-1 [2,460 kB] Get:25 http://gb.archive.ubuntu.com/ubuntu/ quantal/main libxt-dev amd64 1:1.1.3-1 [492 kB] Get:26 http://gb.archive.ubuntu.com/ubuntu/ quantal/main ttf-dejavu-extra all 2.33-2ubuntu1 [3,420 kB] Get:27 http://gb.archive.ubuntu.com/ubuntu/ quantal-updates/universe icedtea-6-jre-cacao amd64 6b24-1.11.5-0ubuntu1~12.10.1 [417 kB] Get:28 http://gb.archive.ubuntu.com/ubuntu/ quantal-updates/universe icedtea-6-jre-jamvm amd64 6b24-1.11.5-0ubuntu1~12.10.1 [581 kB] Get:29 http://gb.archive.ubuntu.com/ubuntu/ quantal-updates/main icedtea-netx-common all 1.3-1ubuntu1.1 [617 kB] Get:30 http://gb.archive.ubuntu.com/ubuntu/ quantal-updates/main icedtea-netx amd64 1.3-1ubuntu1.1 [16.2 kB] Get:31 http://gb.archive.ubuntu.com/ubuntu/ quantal-updates/universe openjdk-6-jdk amd64 6b24-1.11.5-0ubuntu1~12.10.1 [11.1 MB] Fetched 374 MB in 9min 18s (671 kB/s) Extract templates from packages: 100% Selecting previously unselected package openjdk-6-jre-lib. (Reading database ... 143191 files and directories currently installed.) Unpacking openjdk-6-jre-lib (from .../openjdk-6-jre-lib_6b24-1.11.5-0ubuntu1~12.10.1_all.deb) ... Selecting previously unselected package ca-certificates-java. Unpacking ca-certificates-java (from .../ca-certificates-java_20120721_all.deb) ... Selecting previously unselected package tzdata-java. Unpacking tzdata-java (from .../tzdata-java_2012e-0ubuntu2_all.deb) ... Selecting previously unselected package java-common. Unpacking java-common (from .../java-common_0.43ubuntu3_all.deb) ... Selecting previously unselected package openjdk-6-jre-headless:amd64. Unpacking openjdk-6-jre-headless:amd64 (from .../openjdk-6-jre-headless_6b24-1.11.5-0ubuntu1~12.10.1_amd64.deb) ... Selecting previously unselected package libgif4:amd64. Unpacking libgif4:amd64 (from .../libgif4_4.1.6-9.1ubuntu1_amd64.deb) ... Selecting previously unselected package openjdk-6-jre:amd64. 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Unpacking icedtea-6-jre-jamvm:amd64 (from .../icedtea-6-jre-jamvm_6b24-1.11.5-0ubuntu1~12.10.1_amd64.deb) ... Selecting previously unselected package icedtea-netx-common. Unpacking icedtea-netx-common (from .../icedtea-netx-common_1.3-1ubuntu1.1_all.deb) ... Selecting previously unselected package icedtea-netx:amd64. Unpacking icedtea-netx:amd64 (from .../icedtea-netx_1.3-1ubuntu1.1_amd64.deb) ... Selecting previously unselected package openjdk-6-jdk:amd64. Unpacking openjdk-6-jdk:amd64 (from .../openjdk-6-jdk_6b24-1.11.5-0ubuntu1~12.10.1_amd64.deb) ... Selecting previously unselected package openoffice. Unpacking openoffice (from .../openoffice_3.4~oneiric_amd64.deb) ... Processing triggers for doc-base ... Processing 2 added doc-base files... Processing triggers for man-db ... Processing triggers for desktop-file-utils ... Processing triggers for bamfdaemon ... Rebuilding /usr/share/applications/bamf.index... Processing triggers for gnome-menus ... Processing triggers for hicolor-icon-theme ... Processing triggers for fontconfig ... Processing triggers for gnome-icon-theme ... Processing triggers for shared-mime-info ... Setting up tzdata-java (2012e-0ubuntu2) ... Setting up java-common (0.43ubuntu3) ... Setting up libgif4:amd64 (4.1.6-9.1ubuntu1) ... Setting up xorg-sgml-doctools (1:1.10-1) ... Setting up x11proto-core-dev (7.0.23-1) ... Setting up libice-dev:amd64 (2:1.0.8-2) ... Setting up libpthread-stubs0:amd64 (0.3-3) ... Setting up libpthread-stubs0-dev:amd64 (0.3-3) ... Setting up libsm-dev:amd64 (2:1.2.1-2) ... Setting up libxau-dev:amd64 (1:1.0.7-1) ... Setting up libxdmcp-dev:amd64 (1:1.1.1-1) ... Setting up x11proto-input-dev (2.2-1) ... Setting up x11proto-kb-dev (1.0.6-2) ... Setting up xtrans-dev (1.2.7-1) ... Setting up libxcb1-dev:amd64 (1.8.1-1ubuntu1) ... Setting up libx11-dev:amd64 (2:1.5.0-1) ... Setting up libx11-doc (2:1.5.0-1) ... Setting up libxt-dev:amd64 (1:1.1.3-1) ... Setting up ttf-dejavu-extra (2.33-2ubuntu1) ... Setting up icedtea-netx-common (1.3-1ubuntu1.1) ... Setting up openjdk-6-jre-lib (6b24-1.11.5-0ubuntu1~12.10.1) ... Setting up openjdk-6-jre-headless:amd64 (6b24-1.11.5-0ubuntu1~12.10.1) ... update-alternatives: using /usr/lib/jvm/java-6-openjdk-amd64/jre/bin/java to provide /usr/bin/java (java) in auto mode update-alternatives: using /usr/lib/jvm/java-6-openjdk-amd64/jre/bin/keytool to provide /usr/bin/keytool (keytool) in auto mode update-alternatives: using /usr/lib/jvm/java-6-openjdk-amd64/jre/bin/pack200 to provide /usr/bin/pack200 (pack200) in auto mode update-alternatives: using /usr/lib/jvm/java-6-openjdk-amd64/jre/bin/rmid to provide /usr/bin/rmid (rmid) in auto mode update-alternatives: using /usr/lib/jvm/java-6-openjdk-amd64/jre/bin/rmiregistry to provide /usr/bin/rmiregistry (rmiregistry) in auto mode update-alternatives: using /usr/lib/jvm/java-6-openjdk-amd64/jre/bin/unpack200 to provide /usr/bin/unpack200 (unpack200) in auto mode update-alternatives: using /usr/lib/jvm/java-6-openjdk-amd64/jre/bin/orbd to provide /usr/bin/orbd (orbd) in auto mode update-alternatives: using /usr/lib/jvm/java-6-openjdk-amd64/jre/bin/servertool to provide /usr/bin/servertool (servertool) in auto mode update-alternatives: using /usr/lib/jvm/java-6-openjdk-amd64/jre/bin/tnameserv to provide /usr/bin/tnameserv (tnameserv) in auto mode update-alternatives: using /usr/lib/jvm/java-6-openjdk-amd64/jre/lib/jexec to provide /usr/bin/jexec (jexec) in auto mode Setting up ca-certificates-java (20120721) ... Adding debian:Deutsche_Telekom_Root_CA_2.pem Adding debian:Comodo_Trusted_Services_root.pem Adding debian:Certum_Trusted_Network_CA.pem Adding debian:thawte_Primary_Root_CA_-_G2.pem Adding debian:UTN_USERFirst_Hardware_Root_CA.pem Adding debian:AddTrust_Low-Value_Services_Root.pem Adding debian:Microsec_e-Szigno_Root_CA.pem Adding debian:SwissSign_Silver_CA_-_G2.pem Adding debian:ComSign_Secured_CA.pem Adding debian:Buypass_Class_2_CA_1.pem Adding debian:Verisign_Class_1_Public_Primary_Certification_Authority_-_G3.pem Adding debian:Certum_Root_CA.pem Adding debian:AddTrust_External_Root.pem Adding debian:Chambers_of_Commerce_Root_-_2008.pem Adding debian:Starfield_Root_Certificate_Authority_-_G2.pem Adding debian:Verisign_Class_1_Public_Primary_Certification_Authority_-_G2.pem Adding debian:Visa_eCommerce_Root.pem Adding debian:Digital_Signature_Trust_Co._Global_CA_3.pem Adding debian:AC_Raíz_Certicámara_S.A..pem Adding debian:NetLock_Arany_=Class_Gold=_Fotanúsítvány.pem Adding debian:Taiwan_GRCA.pem Adding debian:Camerfirma_Chambers_of_Commerce_Root.pem Adding debian:Juur-SK.pem Adding debian:Entrust.net_Premium_2048_Secure_Server_CA.pem Adding debian:XRamp_Global_CA_Root.pem Adding debian:Security_Communication_RootCA2.pem Adding debian:AddTrust_Qualified_Certificates_Root.pem Adding debian:NetLock_Qualified_=Class_QA=_Root.pem Adding debian:TC_TrustCenter_Class_2_CA_II.pem Adding debian:DST_ACES_CA_X6.pem Adding debian:thawte_Primary_Root_CA.pem Adding debian:thawte_Primary_Root_CA_-_G3.pem Adding debian:GeoTrust_Universal_CA_2.pem Adding debian:ACEDICOM_Root.pem Adding debian:Security_Communication_EV_RootCA1.pem Adding debian:America_Online_Root_Certification_Authority_2.pem Adding debian:TC_TrustCenter_Universal_CA_I.pem Adding debian:SwissSign_Platinum_CA_-_G2.pem Adding debian:Global_Chambersign_Root_-_2008.pem Adding debian:SecureSign_RootCA11.pem Adding debian:GeoTrust_Global_CA_2.pem Adding debian:Buypass_Class_3_CA_1.pem Adding debian:Baltimore_CyberTrust_Root.pem Adding debian:UbuntuOne-Go_Daddy_Class_2_CA.pem Adding debian:Equifax_Secure_eBusiness_CA_1.pem Adding debian:SwissSign_Gold_CA_-_G2.pem Adding debian:AffirmTrust_Premium_ECC.pem Adding debian:TC_TrustCenter_Universal_CA_III.pem Adding debian:ca.pem Adding debian:Verisign_Class_3_Public_Primary_Certification_Authority_-_G2.pem Adding debian:NetLock_Express_=Class_C=_Root.pem Adding debian:VeriSign_Class_3_Public_Primary_Certification_Authority_-_G5.pem Adding debian:Firmaprofesional_Root_CA.pem Adding debian:Comodo_Secure_Services_root.pem Adding debian:cacert.org.pem Adding debian:GeoTrust_Primary_Certification_Authority.pem Adding debian:RSA_Security_2048_v3.pem Adding debian:Staat_der_Nederlanden_Root_CA.pem Adding debian:Cybertrust_Global_Root.pem Adding debian:DigiCert_High_Assurance_EV_Root_CA.pem Adding debian:TDC_OCES_Root_CA.pem Adding debian:A-Trust-nQual-03.pem Adding debian:Equifax_Secure_CA.pem Adding debian:Digital_Signature_Trust_Co._Global_CA_1.pem Adding debian:GeoTrust_Global_CA.pem Adding debian:Starfield_Class_2_CA.pem Adding debian:ApplicationCA_-_Japanese_Government.pem Adding debian:Swisscom_Root_CA_1.pem Adding debian:Verisign_Class_2_Public_Primary_Certification_Authority_-_G2.pem Adding debian:Camerfirma_Global_Chambersign_Root.pem Adding debian:QuoVadis_Root_CA_3.pem Adding debian:QuoVadis_Root_CA.pem Adding debian:Comodo_AAA_Services_root.pem Adding debian:ComSign_CA.pem Adding debian:AddTrust_Public_Services_Root.pem Adding debian:DigiCert_Assured_ID_Root_CA.pem Adding debian:UTN_DATACorp_SGC_Root_CA.pem Adding debian:CA_Disig.pem Adding debian:E-Guven_Kok_Elektronik_Sertifika_Hizmet_Saglayicisi.pem Adding debian:GlobalSign_Root_CA_-_R3.pem Adding debian:QuoVadis_Root_CA_2.pem Adding debian:Entrust_Root_Certification_Authority.pem Adding debian:GTE_CyberTrust_Global_Root.pem Adding debian:ValiCert_Class_1_VA.pem Adding debian:Autoridad_de_Certificacion_Firmaprofesional_CIF_A62634068.pem Adding debian:GeoTrust_Primary_Certification_Authority_-_G2.pem Adding debian:spi-ca-2003.pem Adding debian:America_Online_Root_Certification_Authority_1.pem Adding debian:AffirmTrust_Premium.pem Adding debian:Sonera_Class_1_Root_CA.pem Adding debian:Verisign_Class_2_Public_Primary_Certification_Authority_-_G3.pem Adding debian:Certplus_Class_2_Primary_CA.pem Adding debian:TURKTRUST_Certificate_Services_Provider_Root_2.pem Adding debian:Network_Solutions_Certificate_Authority.pem Adding debian:Go_Daddy_Class_2_CA.pem Adding debian:StartCom_Certification_Authority.pem Adding debian:Hongkong_Post_Root_CA_1.pem Adding debian:Hellenic_Academic_and_Research_Institutions_RootCA_2011.pem Adding debian:Thawte_Premium_Server_CA.pem Adding debian:EBG_Elektronik_Sertifika_Hizmet_Saglayicisi.pem Adding debian:TURKTRUST_Certificate_Services_Provider_Root_1.pem Adding debian:NetLock_Business_=Class_B=_Root.pem Adding debian:Microsec_e-Szigno_Root_CA_2009.pem Adding debian:DigiCert_Global_Root_CA.pem Adding debian:VeriSign_Class_3_Public_Primary_Certification_Authority_-_G4.pem Adding debian:IGC_A.pem Adding debian:TWCA_Root_Certification_Authority.pem Adding debian:S-TRUST_Authentication_and_Encryption_Root_CA_2005_PN.pem Adding debian:VeriSign_Universal_Root_Certification_Authority.pem Adding debian:DST_Root_CA_X3.pem Adding debian:Verisign_Class_1_Public_Primary_Certification_Authority.pem Adding debian:Root_CA_Generalitat_Valenciana.pem Adding debian:UTN_USERFirst_Email_Root_CA.pem Adding debian:ssl-cert-snakeoil.pem Adding debian:Starfield_Services_Root_Certificate_Authority_-_G2.pem Adding debian:GeoTrust_Primary_Certification_Authority_-_G3.pem Adding debian:Certinomis_-_Autorité_Racine.pem Adding debian:Verisign_Class_3_Public_Primary_Certification_Authority.pem Adding debian:TDC_Internet_Root_CA.pem Adding debian:UbuntuOne-ValiCert_Class_2_VA.pem Adding debian:AffirmTrust_Commercial.pem Adding debian:spi-cacert-2008.pem Adding debian:Izenpe.com.pem Adding debian:EC-ACC.pem Adding debian:Go_Daddy_Root_Certificate_Authority_-_G2.pem Adding debian:COMODO_ECC_Certification_Authority.pem Adding debian:CNNIC_ROOT.pem Adding debian:NetLock_Notary_=Class_A=_Root.pem Adding debian:Equifax_Secure_eBusiness_CA_2.pem Adding debian:Verisign_Class_3_Public_Primary_Certification_Authority_-_G3.pem Adding debian:Secure_Global_CA.pem Adding debian:UbuntuOne-Go_Daddy_CA.pem Adding debian:GeoTrust_Universal_CA.pem Adding debian:Wells_Fargo_Root_CA.pem Adding debian:Thawte_Server_CA.pem Adding debian:WellsSecure_Public_Root_Certificate_Authority.pem Adding debian:TC_TrustCenter_Class_3_CA_II.pem Adding debian:COMODO_Certification_Authority.pem Adding debian:Equifax_Secure_Global_eBusiness_CA.pem Adding debian:Security_Communication_Root_CA.pem Adding debian:GlobalSign_Root_CA_-_R2.pem Adding debian:TÜBITAK_UEKAE_Kök_Sertifika_Hizmet_Saglayicisi_-_Sürüm_3.pem Adding debian:Verisign_Class_4_Public_Primary_Certification_Authority_-_G3.pem Adding debian:certSIGN_ROOT_CA.pem Adding debian:RSA_Root_Certificate_1.pem Adding debian:ePKI_Root_Certification_Authority.pem Adding debian:Entrust.net_Secure_Server_CA.pem Adding debian:OISTE_WISeKey_Global_Root_GA_CA.pem Adding debian:Sonera_Class_2_Root_CA.pem Adding debian:Certigna.pem Adding debian:AffirmTrust_Networking.pem Adding debian:ValiCert_Class_2_VA.pem Adding debian:GlobalSign_Root_CA.pem Adding debian:Staat_der_Nederlanden_Root_CA_-_G2.pem Adding debian:SecureTrust_CA.pem done. Setting up openjdk-6-jre:amd64 (6b24-1.11.5-0ubuntu1~12.10.1) ... update-alternatives: using /usr/lib/jvm/java-6-openjdk-amd64/jre/bin/policytool to provide /usr/bin/policytool (policytool) in auto mode Setting up libatk-wrapper-java (0.30.4-0ubuntu4) ... Setting up icedtea-6-jre-cacao:amd64 (6b24-1.11.5-0ubuntu1~12.10.1) ... Setting up icedtea-6-jre-jamvm:amd64 (6b24-1.11.5-0ubuntu1~12.10.1) ... Setting up icedtea-netx:amd64 (1.3-1ubuntu1.1) ... update-alternatives: using /usr/lib/jvm/java-6-openjdk-amd64/jre/bin/javaws to provide /usr/bin/javaws (javaws) in auto mode update-alternatives: using /usr/lib/jvm/java-6-openjdk-amd64/jre/bin/itweb-settings to provide /usr/bin/itweb-settings (itweb-settings) in auto mode update-alternatives: using /usr/lib/jvm/java-7-openjdk-amd64/jre/bin/javaws to provide /usr/bin/javaws (javaws) in auto mode update-alternatives: using /usr/lib/jvm/java-7-openjdk-amd64/jre/bin/itweb-settings to provide /usr/bin/itweb-settings (itweb-settings) in auto mode Setting up openjdk-6-jdk:amd64 (6b24-1.11.5-0ubuntu1~12.10.1) ... update-alternatives: using /usr/lib/jvm/java-6-openjdk-amd64/bin/appletviewer to provide /usr/bin/appletviewer (appletviewer) in auto mode update-alternatives: using /usr/lib/jvm/java-6-openjdk-amd64/bin/extcheck to provide /usr/bin/extcheck (extcheck) in auto mode update-alternatives: using /usr/lib/jvm/java-6-openjdk-amd64/bin/idlj to provide /usr/bin/idlj (idlj) in auto mode update-alternatives: using /usr/lib/jvm/java-6-openjdk-amd64/bin/jar to provide /usr/bin/jar (jar) in auto mode update-alternatives: using /usr/lib/jvm/java-6-openjdk-amd64/bin/jarsigner to provide /usr/bin/jarsigner (jarsigner) in auto mode update-alternatives: using /usr/lib/jvm/java-6-openjdk-amd64/bin/javac to provide /usr/bin/javac (javac) in auto mode update-alternatives: using /usr/lib/jvm/java-6-openjdk-amd64/bin/javadoc to provide /usr/bin/javadoc (javadoc) in auto mode update-alternatives: using /usr/lib/jvm/java-6-openjdk-amd64/bin/javah to provide /usr/bin/javah (javah) in auto mode update-alternatives: using /usr/lib/jvm/java-6-openjdk-amd64/bin/javap to provide /usr/bin/javap (javap) in auto mode update-alternatives: using /usr/lib/jvm/java-6-openjdk-amd64/bin/jconsole to provide /usr/bin/jconsole (jconsole) in auto mode update-alternatives: using /usr/lib/jvm/java-6-openjdk-amd64/bin/jdb to provide /usr/bin/jdb (jdb) in auto mode update-alternatives: using /usr/lib/jvm/java-6-openjdk-amd64/bin/jhat to provide /usr/bin/jhat (jhat) in auto mode update-alternatives: using /usr/lib/jvm/java-6-openjdk-amd64/bin/jinfo to provide /usr/bin/jinfo (jinfo) in auto mode update-alternatives: using /usr/lib/jvm/java-6-openjdk-amd64/bin/jmap to provide /usr/bin/jmap (jmap) in auto mode update-alternatives: using /usr/lib/jvm/java-6-openjdk-amd64/bin/jps to provide /usr/bin/jps (jps) in auto mode update-alternatives: using /usr/lib/jvm/java-6-openjdk-amd64/bin/jrunscript to provide /usr/bin/jrunscript (jrunscript) in auto mode update-alternatives: using /usr/lib/jvm/java-6-openjdk-amd64/bin/jsadebugd to provide /usr/bin/jsadebugd (jsadebugd) in auto mode update-alternatives: using /usr/lib/jvm/java-6-openjdk-amd64/bin/jstack to provide /usr/bin/jstack (jstack) in auto mode update-alternatives: using /usr/lib/jvm/java-6-openjdk-amd64/bin/jstat to provide /usr/bin/jstat (jstat) in auto mode update-alternatives: using /usr/lib/jvm/java-6-openjdk-amd64/bin/jstatd to provide /usr/bin/jstatd (jstatd) in auto mode update-alternatives: using /usr/lib/jvm/java-6-openjdk-amd64/bin/native2ascii to provide /usr/bin/native2ascii (native2ascii) in auto mode update-alternatives: using /usr/lib/jvm/java-6-openjdk-amd64/bin/rmic to provide /usr/bin/rmic (rmic) in auto mode update-alternatives: using /usr/lib/jvm/java-6-openjdk-amd64/bin/schemagen to provide /usr/bin/schemagen (schemagen) in auto mode update-alternatives: using /usr/lib/jvm/java-6-openjdk-amd64/bin/serialver to provide /usr/bin/serialver (serialver) in auto mode update-alternatives: using /usr/lib/jvm/java-6-openjdk-amd64/bin/wsgen to provide /usr/bin/wsgen (wsgen) in auto mode update-alternatives: using /usr/lib/jvm/java-6-openjdk-amd64/bin/wsimport to provide /usr/bin/wsimport (wsimport) in auto mode update-alternatives: using /usr/lib/jvm/java-6-openjdk-amd64/bin/xjc to provide /usr/bin/xjc (xjc) in auto mode Setting up openoffice (3.4~oneiric) ... Setting up libatk-wrapper-java-jni:amd64 (0.30.4-0ubuntu4) ... Processing triggers for libc-bin ... ldconfig deferred processing now taking place philip@X301-2:~$ sudo apt-get install libxrandr2:i386 libxinerama1:i386 Reading package lists... Done Building dependency tree Reading state information... Done The following package was automatically installed and is no longer required: linux-headers-3.5.0-17 Use 'apt-get autoremove' to remove it. The following extra packages will be installed: gcc-4.7-base:i386 libc6:i386 libgcc1:i386 libx11-6:i386 libxau6:i386 libxcb1:i386 libxdmcp6:i386 libxext6:i386 libxrender1:i386 Suggested packages: glibc-doc:i386 locales:i386 The following NEW packages will be installed gcc-4.7-base:i386 libc6:i386 libgcc1:i386 libx11-6:i386 libxau6:i386 libxcb1:i386 libxdmcp6:i386 libxext6:i386 libxinerama1:i386 libxrandr2:i386 libxrender1:i386 0 upgraded, 11 newly installed, 0 to remove and 93 not upgraded. Need to get 4,936 kB of archives. After this operation, 11.9 MB of additional disk space will be used. Do you want to continue [Y/n]? y Get:1 http://gb.archive.ubuntu.com/ubuntu/ quantal/main gcc-4.7-base i386 4.7.2-2ubuntu1 [15.5 kB] Get:2 http://gb.archive.ubuntu.com/ubuntu/ quantal/main libc6 i386 2.15-0ubuntu20 [3,940 kB] Get:3 http://gb.archive.ubuntu.com/ubuntu/ quantal/main libgcc1 i386 1:4.7.2-2ubuntu1 [53.5 kB] Get:4 http://gb.archive.ubuntu.com/ubuntu/ quantal/main libxau6 i386 1:1.0.7-1 [8,582 B] Get:5 http://gb.archive.ubuntu.com/ubuntu/ quantal/main libxdmcp6 i386 1:1.1.1-1 [13.1 kB] Get:6 http://gb.archive.ubuntu.com/ubuntu/ quantal/main libxcb1 i386 1.8.1-1ubuntu1 [48.7 kB] Get:7 http://gb.archive.ubuntu.com/ubuntu/ quantal/main libx11-6 i386 2:1.5.0-1 [776 kB] Get:8 http://gb.archive.ubuntu.com/ubuntu/ quantal/main libxext6 i386 2:1.3.1-2 [33.9 kB] Get:9 http://gb.archive.ubuntu.com/ubuntu/ quantal/main libxinerama1 i386 2:1.1.2-1 [8,118 B] Get:10 http://gb.archive.ubuntu.com/ubuntu/ quantal/main libxrender1 i386 1:0.9.7-1 [20.1 kB] Get:11 http://gb.archive.ubuntu.com/ubuntu/ quantal/main libxrandr2 i386 2:1.4.0-1 [18.8 kB] Fetched 4,936 kB in 30s (161 kB/s) Preconfiguring packages ... Selecting previously unselected package gcc-4.7-base:i386. (Reading database ... 146005 files and directories currently installed.) Unpacking gcc-4.7-base:i386 (from .../gcc-4.7-base_4.7.2-2ubuntu1_i386.deb) ... Selecting previously unselected package libc6:i386. Unpacking libc6:i386 (from .../libc6_2.15-0ubuntu20_i386.deb) ... Selecting previously unselected package libgcc1:i386. Unpacking libgcc1:i386 (from .../libgcc1_1%3a4.7.2-2ubuntu1_i386.deb) ... Selecting previously unselected package libxau6:i386. Unpacking libxau6:i386 (from .../libxau6_1%3a1.0.7-1_i386.deb) ... Selecting previously unselected package libxdmcp6:i386. Unpacking libxdmcp6:i386 (from .../libxdmcp6_1%3a1.1.1-1_i386.deb) ... Selecting previously unselected package libxcb1:i386. Unpacking libxcb1:i386 (from .../libxcb1_1.8.1-1ubuntu1_i386.deb) ... Selecting previously unselected package libx11-6:i386. Unpacking libx11-6:i386 (from .../libx11-6_2%3a1.5.0-1_i386.deb) ... Selecting previously unselected package libxext6:i386. Unpacking libxext6:i386 (from .../libxext6_2%3a1.3.1-2_i386.deb) ... Selecting previously unselected package libxinerama1:i386. Unpacking libxinerama1:i386 (from .../libxinerama1_2%3a1.1.2-1_i386.deb) ... Selecting previously unselected package libxrender1:i386. Unpacking libxrender1:i386 (from .../libxrender1_1%3a0.9.7-1_i386.deb) ... Selecting previously unselected package libxrandr2:i386. Unpacking libxrandr2:i386 (from .../libxrandr2_2%3a1.4.0-1_i386.deb) ... Setting up gcc-4.7-base:i386 (4.7.2-2ubuntu1) ... Setting up libc6:i386 (2.15-0ubuntu20) ... Setting up libgcc1:i386 (1:4.7.2-2ubuntu1) ... Setting up libxau6:i386 (1:1.0.7-1) ... Setting up libxdmcp6:i386 (1:1.1.1-1) ... Setting up libxcb1:i386 (1.8.1-1ubuntu1) ... Setting up libx11-6:i386 (2:1.5.0-1) ... Setting up libxext6:i386 (2:1.3.1-2) ... Setting up libxinerama1:i386 (2:1.1.2-1) ... Setting up libxrender1:i386 (1:0.9.7-1) ... Setting up libxrandr2:i386 (2:1.4.0-1) ... Processing triggers for libc-bin ... ldconfig deferred processing now taking place $ sudo chmod a+rx /opt/openoffice.org3/share/uno_packages/cache/uno_packages chmod: cannot access `/opt/openoffice.org3/share/uno_packages/cache/uno_packages': No such file or directory

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  • JMS Step 5 - How to Create an 11g BPEL Process Which Reads a Message Based on an XML Schema from a JMS Queue

    - by John-Brown.Evans
    JMS Step 5 - How to Create an 11g BPEL Process Which Reads a Message Based on an XML Schema from a JMS Queue .jblist{list-style-type:disc;margin:0;padding:0;padding-left:0pt;margin-left:36pt} ol{margin:0;padding:0} .c12_5{vertical-align:top;width:468pt;border-style:solid;background-color:#f3f3f3;border-color:#000000;border-width:1pt;padding:5pt 5pt 5pt 5pt} .c8_5{vertical-align:top;border-style:solid;border-color:#000000;border-width:1pt;padding:5pt 5pt 0pt 5pt} .c10_5{vertical-align:top;width:207pt;border-style:solid;border-color:#000000;border-width:1pt;padding:5pt 5pt 5pt 5pt} .c14_5{vertical-align:top;border-style:solid;border-color:#000000;border-width:1pt;padding:0pt 5pt 0pt 5pt} .c21_5{background-color:#ffffff} .c18_5{color:#1155cc;text-decoration:underline} .c16_5{color:#666666;font-size:12pt} .c5_5{background-color:#f3f3f3;font-weight:bold} .c19_5{color:inherit;text-decoration:inherit} .c3_5{height:11pt;text-align:center} .c11_5{font-weight:bold} .c20_5{background-color:#00ff00} .c6_5{font-style:italic} .c4_5{height:11pt} .c17_5{background-color:#ffff00} .c0_5{direction:ltr} .c7_5{font-family:"Courier New"} .c2_5{border-collapse:collapse} .c1_5{line-height:1.0} .c13_5{background-color:#f3f3f3} .c15_5{height:0pt} .c9_5{text-align:center} .title{padding-top:24pt;line-height:1.15;text-align:left;color:#000000;font-size:36pt;font-family:"Arial";font-weight:bold;padding-bottom:6pt} .subtitle{padding-top:18pt;line-height:1.15;text-align:left;color:#666666;font-style:italic;font-size:24pt;font-family:"Georgia";padding-bottom:4pt} li{color:#000000;font-size:10pt;font-family:"Arial"} p{color:#000000;font-size:10pt;margin:0;font-family:"Arial"} h1{padding-top:0pt;line-height:1.15;text-align:left;color:#888;font-size:24pt;font-family:"Arial";font-weight:normal} h2{padding-top:0pt;line-height:1.15;text-align:left;color:#888;font-size:18pt;font-family:"Arial";font-weight:normal} h3{padding-top:0pt;line-height:1.15;text-align:left;color:#888;font-size:14pt;font-family:"Arial";font-weight:normal} h4{padding-top:0pt;line-height:1.15;text-align:left;color:#888;font-size:12pt;font-family:"Arial";font-weight:normal} h5{padding-top:0pt;line-height:1.15;text-align:left;color:#888;font-size:11pt;font-family:"Arial";font-weight:normal} h6{padding-top:0pt;line-height:1.15;text-align:left;color:#888;font-size:10pt;font-family:"Arial";font-weight:normal} Welcome to another post in the series of blogs which demonstrates how to use JMS queues in a SOA context. The previous posts were: JMS Step 1 - How to Create a Simple JMS Queue in Weblogic Server 11g JMS Step 2 - Using the QueueSend.java Sample Program to Send a Message to a JMS Queue JMS Step 3 - Using the QueueReceive.java Sample Program to Read a Message from a JMS Queue JMS Step 4 - How to Create an 11g BPEL Process Which Writes a Message Based on an XML Schema to a JMS Queue Today we will create a BPEL process which will read (dequeue) the message from the JMS queue, which we enqueued in the last example. The JMS adapter will dequeue the full XML payload from the queue. 1. Recap and Prerequisites In the previous examples, we created a JMS Queue, a Connection Factory and a Connection Pool in the WebLogic Server Console. Then we designed and deployed a BPEL composite, which took a simple XML payload and enqueued it to the JMS queue. In this example, we will read that same message from the queue, using a JMS adapter and a BPEL process. As many of the configuration steps required to read from that queue were done in the previous samples, this one will concentrate on the new steps. A summary of the required objects is listed below. To find out how to create them please see the previous samples. They also include instructions on how to verify the objects are set up correctly. WebLogic Server Objects Object Name Type JNDI Name TestConnectionFactory Connection Factory jms/TestConnectionFactory TestJMSQueue JMS Queue jms/TestJMSQueue eis/wls/TestQueue Connection Pool eis/wls/TestQueue Schema XSD File The following XSD file is used for the message format. It was created in the previous example and will be copied to the new process. stringPayload.xsd <?xml version="1.0" encoding="windows-1252" ?> <xsd:schema xmlns:xsd="http://www.w3.org/2001/XMLSchema"                 xmlns="http://www.example.org"                 targetNamespace="http://www.example.org"                 elementFormDefault="qualified">   <xsd:element name="exampleElement" type="xsd:string">   </xsd:element> </xsd:schema> JMS Message After executing the previous samples, the following XML message should be in the JMS queue located at jms/TestJMSQueue: <?xml version="1.0" encoding="UTF-8" ?><exampleElement xmlns="http://www.example.org">Test Message</exampleElement> JDeveloper Connection You will need a valid Application Server Connection in JDeveloper pointing to the SOA server which the process will be deployed to. 2. Create a BPEL Composite with a JMS Adapter Partner Link In the previous example, we created a composite in JDeveloper called JmsAdapterWriteSchema. In this one, we will create a new composite called JmsAdapterReadSchema. There are probably many ways of incorporating a JMS adapter into a SOA composite for incoming messages. One way is design the process in such a way that the adapter polls for new messages and when it dequeues one, initiates a SOA or BPEL instance. This is possibly the most common use case. Other use cases include mid-flow adapters, which are activated from within the BPEL process. In this example we will use a polling adapter, because it is the most simple to set up and demonstrate. But it has one disadvantage as a demonstrative model. When a polling adapter is active, it will dequeue all messages as soon as they reach the queue. This makes it difficult to monitor messages we are writing to the queue, because they will disappear from the queue as soon as they have been enqueued. To work around this, we will shut down the composite after deploying it and restart it as required. (Another solution for this would be to pause the consumption for the queue and resume consumption again if needed. This can be done in the WLS console JMS-Modules -> queue -> Control -> Consumption -> Pause/Resume.) We will model the composite as a one-way incoming process. Usually, a BPEL process will do something useful with the message after receiving it, such as passing it to a database or file adapter, a human workflow or external web service. But we only want to demonstrate how to dequeue a JMS message using BPEL and a JMS adapter, so we won’t complicate the design with further activities. However, we do want to be able to verify that we have read the message correctly, so the BPEL process will include a small piece of embedded java code, which will print the message to standard output, so we can view it in the SOA server’s log file. Alternatively, you can view the instance in the Enterprise Manager and verify the message. The following steps are all executed in JDeveloper. Create the project in the same JDeveloper application used for the previous examples or create a new one. Create a SOA Project Create a new project and choose SOA Tier > SOA Project as its type. Name it JmsAdapterReadSchema. When prompted for the composite type, choose Empty Composite. Create a JMS Adapter Partner Link In the composite editor, drag a JMS adapter over from the Component Palette to the left-hand swim lane, under Exposed Services. This will start the JMS Adapter Configuration Wizard. Use the following entries: Service Name: JmsAdapterRead Oracle Enterprise Messaging Service (OEMS): Oracle WebLogic JMS AppServer Connection: Use an application server connection pointing to the WebLogic server on which the JMS queue and connection factory mentioned under Prerequisites above are located. Adapter Interface > Interface: Define from operation and schema (specified later) Operation Type: Consume Message Operation Name: Consume_message Consume Operation Parameters Destination Name: Press the Browse button, select Destination Type: Queues, then press Search. Wait for the list to populate, then select the entry for TestJMSQueue , which is the queue created in a previous example. JNDI Name: The JNDI name to use for the JMS connection. As in the previous example, this is probably the most common source of error. This is the JNDI name of the JMS adapter’s connection pool created in the WebLogic Server and which points to the connection factory. JDeveloper does not verify the value entered here. If you enter a wrong value, the JMS adapter won’t find the queue and you will get an error message at runtime, which is very difficult to trace. In our example, this is the value eis/wls/TestQueue . (See the earlier step on how to create a JMS Adapter Connection Pool in WebLogic Server for details.) Messages/Message SchemaURL: We will use the XSD file created during the previous example, in the JmsAdapterWriteSchema project to define the format for the incoming message payload and, at the same time, demonstrate how to import an existing XSD file into a JDeveloper project. Press the magnifying glass icon to search for schema files. In the Type Chooser, press the Import Schema File button. Select the magnifying glass next to URL to search for schema files. Navigate to the location of the JmsAdapterWriteSchema project > xsd and select the stringPayload.xsd file. Check the “Copy to Project” checkbox, press OK and confirm the following Localize Files popup. Now that the XSD file has been copied to the local project, it can be selected from the project’s schema files. Expand Project Schema Files > stringPayload.xsd and select exampleElement: string . Press Next and Finish, which will complete the JMS Adapter configuration.Save the project. Create a BPEL Component Drag a BPEL Process from the Component Palette (Service Components) to the Components section of the composite designer. Name it JmsAdapterReadSchema and select Template: Define Service Later and press OK. Wire the JMS Adapter to the BPEL Component Now wire the JMS adapter to the BPEL process, by dragging the arrow from the adapter to the BPEL process. A Transaction Properties popup will be displayed. Set the delivery mode to async.persist. This completes the steps at the composite level. 3 . Complete the BPEL Process Design Invoke the BPEL Flow via the JMS Adapter Open the BPEL component by double-clicking it in the design view of the composite.xml, or open it from the project navigator by selecting the JmsAdapterReadSchema.bpel file. This will display the BPEL process in the design view. You should see the JmsAdapterRead partner link in the left-hand swim lane. Drag a Receive activity onto the BPEL flow diagram, then drag a wire (left-hand yellow arrow) from it to the JMS adapter. This will open the Receive activity editor. Auto-generate the variable by pressing the green “+” button and check the “Create Instance” checkbox. This will result in a BPEL instance being created when a new JMS message is received. At this point it would actually be OK to compile and deploy the composite and it would pick up any messages from the JMS queue. In fact, you can do that to test it, if you like. But it is very rudimentary and would not be doing anything useful with the message. Also, you could only verify the actual message payload by looking at the instance’s flow in the Enterprise Manager. There are various other possibilities; we could pass the message to another web service, write it to a file using a file adapter or to a database via a database adapter etc. But these will all introduce unnecessary complications to our sample. So, to keep it simple, we will add a small piece of Java code to the BPEL process which will write the payload to standard output. This will be written to the server’s log file, which will be easy to monitor. Add a Java Embedding Activity First get the full name of the process’s input variable, as this will be needed for the Java code. Go to the Structure pane and expand Variables > Process > Variables. Then expand the input variable, for example, "Receive1_Consume_Message_InputVariable > body > ns2:exampleElement”, and note variable’s name and path, if they are different from this one. Drag a Java Embedding activity from the Component Palette (Oracle Extensions) to the BPEL flow, after the Receive activity, then open it to edit. Delete the example code and replace it with the following, replacing the variable parts with those in your sample, if necessary.: System.out.println("JmsAdapterReadSchema process picked up a message"); oracle.xml.parser.v2.XMLElement inputPayload =    (oracle.xml.parser.v2.XMLElement)getVariableData(                           "Receive1_Consume_Message_InputVariable",                           "body",                           "/ns2:exampleElement");   String inputString = inputPayload.getFirstChild().getNodeValue(); System.out.println("Input String is " + inputPayload.getFirstChild().getNodeValue()); Tip. If you are not sure of the exact syntax of the input variable, create an Assign activity in the BPEL process and copy the variable to another, temporary one. Then check the syntax created by the BPEL designer. This completes the BPEL process design in JDeveloper. Save, compile and deploy the process to the SOA server. 3. Test the Composite Shut Down the JmsAdapterReadSchema Composite After deploying the JmsAdapterReadSchema composite to the SOA server it is automatically activated. If there are already any messages in the queue, the adapter will begin polling them. To ease the testing process, we will deactivate the process first Log in to the Enterprise Manager (Fusion Middleware Control) and navigate to SOA > soa-infra (soa_server1) > default (or wherever you deployed your composite to) and click on JmsAdapterReadSchema [1.0] . Press the Shut Down button to disable the composite and confirm the following popup. Monitor Messages in the JMS Queue In a separate browser window, log in to the WebLogic Server Console and navigate to Services > Messaging > JMS Modules > TestJMSModule > TestJMSQueue > Monitoring. This is the location of the JMS queue we created in an earlier sample (see the prerequisites section of this sample). Check whether there are any messages already in the queue. If so, you can dequeue them using the QueueReceive Java program created in an earlier sample. This will ensure that the queue is empty and doesn’t contain any messages in the wrong format, which would cause the JmsAdapterReadSchema to fail. Send a Test Message In the Enterprise Manager, navigate to the JmsAdapterWriteSchema created earlier, press Test and send a test message, for example “Message from JmsAdapterWriteSchema”. Confirm that the message was written correctly to the queue by verifying it via the queue monitor in the WLS Console. Monitor the SOA Server’s Output A program deployed on the SOA server will write its standard output to the terminal window in which the server was started, unless this has been redirected to somewhere else, for example to a file. If it has not been redirected, go to the terminal session in which the server was started, otherwise open and monitor the file to which it was redirected. Re-Enable the JmsAdapterReadSchema Composite In the Enterprise Manager, navigate to the JmsAdapterReadSchema composite again and press Start Up to re-enable it. This should cause the JMS adapter to dequeue the test message and the following output should be written to the server’s standard output: JmsAdapterReadSchema process picked up a message. Input String is Message from JmsAdapterWriteSchema Note that you can also monitor the payload received by the process, by navigating to the the JmsAdapterReadSchema’s Instances tab in the Enterprise Manager. Then select the latest instance and view the flow of the BPEL component. The Receive activity will contain and display the dequeued message too. 4 . Troubleshooting This sample demonstrates how to dequeue an XML JMS message using a BPEL process and no additional functionality. For example, it doesn’t contain any error handling. Therefore, any errors in the payload will result in exceptions being written to the log file or standard output. If you get any errors related to the payload, such as Message handle error ... ORABPEL-09500 ... XPath expression failed to execute. An error occurs while processing the XPath expression; the expression is /ns2:exampleElement. ... etc. check that the variable used in the Java embedding part of the process was entered correctly. Possibly follow the tip mentioned in previous section. If this doesn’t help, you can delete the Java embedding part and simply verify the message via the flow diagram in the Enterprise Manager. Or use a different method, such as writing it to a file via a file adapter. This concludes this example. In the next post, we will begin with an AQ JMS example, which uses JMS to write to an Advanced Queue stored in the database. Best regards John-Brown Evans Oracle Technology Proactive Support Delivery

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  • Registration form validation not validating

    - by jgray
    I am a noob when it comes to web development. I am trying to validate a registration form and to me it looks right but it will not validate.. This is what i have so far and i am validating through a repository or database. Any help would be greatly appreciated. thanks <?php session_start(); $title = "User Registration"; $keywords = "Name, contact, phone, e-mail, registration"; $description = "user registration becoming a member."; require "partials/_html_header.php"; //require "partials/_header.php"; require "partials/_menu.php"; require "DataRepository.php"; // if all validation passed save user $db = new DataRepository(); // form validation goes here $first_nameErr = $emailErr = $passwordErr = $passwordConfirmErr = ""; $first_name = $last_name = $email = $password = $passwordConfirm = ""; if(isset($_POST['submit'])) { $valid = TRUE; // check if all fields are valid { if ($_SERVER["REQUEST_METHOD"] == "POST") { if (empty($_POST["first_name"])) {$first_nameErr = "Name is required";} else { // $first_name = test_input($_POST["first_name"]); // check if name only contains letters and whitespace if (!preg_match("/^[a-zA-Z ]*$/",$first_name)) { $first_nameErr = "Only letters and white space allowed"; } } if (empty($_POST["email"])) {$emailErr = "Email is required";} else { // $email = test_input($_POST["email"]); // check if e-mail address syntax is valid if (!preg_match("/([\w\-]+\@[\w\-]+\.[\w\-]+)/",$email)) { $emailErr = "Invalid email format"; } } if (!preg_match("/(......)/",$password)) { $passwordErr = "Subject must contain THREE or more characters!"; } if ($_POST['password']!= $_POST['passwordConfirm']) { echo("Oops! Password did not match! Try again. "); } function test_input($data) { $data = trim($data); $data = stripslashes($data); $data = htmlspecialchars($data); return $data; } } } if(!$db->isEmailUnique($_POST['email'])) { $valid = FALSE; //display errors in the correct places } // if still valid save the user if($valid) { $new_user = array( 'first_name' => $_POST['first_name'], 'last_name' => $_POST['last_name'], 'email' => $_POST['email'], 'password' => $_POST['password'] ); $results = $db->saveUser($new_user); if($results == TRUE) { header("Location: login.php"); } else { echo "WTF!"; exit; } } } ?> <head> <style> .error {color: #FF0000;} </style> </head> <h1 class="center"> World Wide Web Creations' User Registration </h1> <p><span class="error"></span><p> <form method="POST" action="<?php echo htmlspecialchars($_SERVER["PHP_SELF"]);?>" onsubmit="return validate_form()" > First Name: <input type="text" name="first_name" id="first_name" value="<?php echo $first_name;?>" /> <span class="error"> <?php echo $first_nameErr;?></span> <br /> <br /> Last Name(Optional): <input type="text" name="last_name" id="last_name" value="<?php echo $last_name;?>" /> <br /> <br /> E-mail: <input type="email" name="email" id="email" value="<?php echo $email;?>" /> <span class="error"> <?php echo $emailErr;?></span> <br /> <br /> Password: <input type="password" name="password" id="password" value="" /> <span class="error"> <?php echo $passwordErr;?></span> <br /> <br /> Confirmation Password: <input type="password" name="passwordConfirm" id="passwordConfirm" value="" /> <span class="error"> <?php echo $passwordConfirmErr;?></span> <br /> <br /> <br /> <br /> <input type="submit" name="submit" id="submit" value="Submit Data" /> <input type="reset" name="reset" id="reset" value="Reset Form" /> </form> </body> </html> <?php require "partials/_footer.php"; require "partials/_html_footer.php"; ?> class DataRepository { // version number private $version = "1.0.3"; // turn on and off debugging private static $debug = FALSE; // flag to (re)initialize db on each call private static $initialize_db = FALSE; // insert test data on initialization private static $load_default_data = TRUE; const DATAFILE = "203data.txt"; private $data = NULL; private $errors = array(); private $user_fields = array( 'id' => array('required' => 0), 'created_at' => array('required' => 0), 'updated_at' => array('required' => 0), 'first_name' => array('required' => 1), 'last_name' => array('required' => 0), 'email' => array('required' => 1), 'password' => array('required' => 1), 'level' => array('required' => 0, 'default' => 2), ); private $post_fields = array( 'id' => array('required' => 0), 'created_at' => array('required' => 0), 'updated_at' => array('required' => 0), 'user_id' => array('required' => 1), 'title' => array('required' => 1), 'message' => array('required' => 1), 'private' => array('required' => 0, 'default' => 0), ); private $default_user = array( 'id' => 1, 'created_at' => '2013-01-01 00:00:00', 'updated_at' => '2013-01-01 00:00:00', 'first_name' => 'Admin Joe', 'last_name' => 'Tester', 'email' => '[email protected]', 'password' => 'a94a8fe5ccb19ba61c4c0873d391e987982fbbd3', 'level' => 1, ); private $default_post = array( 'id' => 1, 'created_at' => '2013-01-01 00:00:00', 'updated_at' => '2013-01-01 00:00:00', 'user_id' => 1, 'title' => 'My First Post', 'message' => 'This is the message of the first post.', 'private' => 0, ); // constructor will load existing data into memory // if it does not exist it will create it and initialize if desired public function __construct() { // check if need to reset if(DataRepository::$initialize_db AND file_exists(DataRepository::DATAFILE)) { unlink(DataRepository::DATAFILE); } // if file doesn't exist, create the initial datafile if(!file_exists(DataRepository::DATAFILE)) { $this->log("Data file does not exist. Attempting to create it... (".__FUNCTION__.":".__LINE__.")"); // create initial file $this->data = array( 'users' => array( ), 'posts' => array() ); // load default data if needed if(DataRepository::$load_default_data) { $this->data['users'][1] = $this->default_user; $this->data['posts'][1] = $this->default_post; } $this->writeTheData(); } // load the data into memory for use $this->loadTheData(); } private function showErrors($break = TRUE, $type = NULL) { if(count($this->errors) > 0) { echo "<div style=\"color:red;font-weight: bold;font-size: 1.3em\":<h3>$type Errors</h3><ol>"; foreach($this->errors AS $error) { echo "<li>$error</li>"; } echo "</ol></div>"; if($break) { "</br></br></br>Exiting because of errors!"; exit; } } } private function writeTheData() { $this->log("Attempting to write the datafile: ".DataRepository::DATAFILE." (".__FUNCTION__.":".__LINE__.")"); file_put_contents(DataRepository::DATAFILE, json_encode($this->data)); $this->log("Datafile written: ".DataRepository::DATAFILE." (line: ".__LINE__.")"); } private function loadTheData() { $this->log("Attempting to load the datafile: ".DataRepository::DATAFILE." (".__FUNCTION__.":".__LINE__.")"); $this->data = json_decode(file_get_contents(DataRepository::DATAFILE), true); $this->log("Datafile loaded: ".DataRepository::DATAFILE." (".__FUNCTION__.":".__LINE__.")", $this->data); } private function validateFields(&$info, $fields, $pre_errors = NULL) { // merge in any pre_errors if($pre_errors != NULL) { $this->errors = array_merge($this->errors, $pre_errors); } // check all required fields foreach($fields AS $field => $reqs) { if(isset($reqs['required']) AND $reqs['required'] == 1) { if(!isset($info[$field]) OR strlen($info[$field]) == 0) { $this->errors[] = "$field is a REQUIRED field"; } } // set any default values if not present if(isset($reqs['default']) AND (!isset($info[$field]) OR $info[$field] == "")) { $info[$field] = $reqs['default']; } } $this->showErrors(); if(count($this->errors) == 0) { return TRUE; } else { return FALSE; } } private function validateUser(&$user_info) { // check if the email is already in use $this->log("About to check pre_errors: ".DataRepository::DATAFILE." (".__FUNCTION__.":".__LINE__.")", $user_info); $pre_errors = NULL; if(isset($user_info['email'])) { if(!$this->isEmailUnique($user_info['email'])) { $pre_errors = array('The email: '.$user_info['email'].' is already used in our system'); } } $this->log("After pre_error check: ".DataRepository::DATAFILE." (".__FUNCTION__.":".__LINE__.")", $pre_errors); return $this->validateFields($user_info, $this->user_fields, $pre_errors); } private function validatePost(&$post_info) { // check if the user_id in the post actually exists $this->log("About to check pre_errors: ".DataRepository::DATAFILE." (".__FUNCTION__.":".__LINE__.")", $post_info); $pre_errors = NULL; if(isset($post_info['user_id'])) { if(!isset($this->data['users'][$post_info['user_id']])) { $pre_errors = array('The posts must belong to a valid user. (User '.$post_info['user_id'].' does not exist in the data'); } } $this->log("After pre_error check: ".DataRepository::DATAFILE." (".__FUNCTION__.":".__LINE__.")", $pre_errors); return $this->validateFields($post_info, $this->post_fields, $pre_errors); } private function log($message, $data = NULL) { $style = "background-color: #F8F8F8; border: 1px solid #DDDDDD; border-radius: 3px; font-size: 13px; line-height: 19px; overflow: auto; padding: 6px 10px;"; if(DataRepository::$debug) { if($data != NULL) { $dump = "<div style=\"$style\"><pre>".json_encode($data, JSON_PRETTY_PRINT)."</pre></div>"; } else { $dump = NULL; } echo "<code><b>Debug:</b> $message</code>$dump<br />"; } } public function saveUser($user_info) { $this->log("Entering saveUser: (".__FUNCTION__.":".__LINE__.")", $user_info); $mydata = array(); $update = FALSE; // check for existing data if(isset($user_info['id']) AND $this->data['users'][$user_info['id']]) { $mydata = $this->data['users'][$user_info['id']]; $this->log("Loaded prior user: ".print_r($mydata, TRUE)." (".__FUNCTION__.":".__LINE__.")"); } // copy over existing values $this->log("Before copying over existing values: (".__FUNCTION__.":".__LINE__.")", $mydata); foreach($user_info AS $k => $v) { $mydata[$k] = $user_info[$k]; } $this->log("After copying over existing values: (".__FUNCTION__.":".__LINE__.")", $mydata); // check required fields if($this->validateUser($mydata)) { // hash password if new if(isset($mydata['password'])) { $mydata['password'] = sha1($mydata['password']); } // if no id, add the next available one if(!isset($mydata['id']) OR (int)$mydata['id'] < 1) { $this->log("No id set: ".DataRepository::DATAFILE." (".__FUNCTION__.":".__LINE__.")"); if(count($this->data['users']) == 0) { $mydata['id'] = 1; $this->log("Setting id to 1: ".DataRepository::DATAFILE." (".__FUNCTION__.":".__LINE__.")"); } else { $mydata['id'] = max(array_keys($this->data['users']))+1; $this->log("Found max id and added 1 [".$mydata['id']."]: ".DataRepository::DATAFILE." (".__FUNCTION__.":".__LINE__.")"); } } // set created date if null if(!isset($mydata['created_at'])) { $mydata['created_at'] = date ("Y-m-d H:i:s", time()); } // update modified time $mydata['modified_at'] = date ("Y-m-d H:i:s", time()); // copy into data and save $this->log("Before data save: (".__FUNCTION__.":".__LINE__.")", $this->data); $this->data['users'][$mydata['id']] = $mydata; $this->writeTheData(); } return TRUE; } public function getUserById($id) { if(isset($this->data['users'][$id])) { return $this->data['users'][$id]; } else { return array(); } } public function isEmailUnique($email) { // find the user that has the right username/password foreach($this->data['users'] AS $k => $v) { $this->log("Checking unique email: {$v['email']} == $email (".__FUNCTION__.":".__LINE__.")", NULL); if($v['email'] == $email) { $this->log("FOUND NOT unique email: {$v['email']} == $email (".__FUNCTION__.":".__LINE__.")", NULL); return FALSE; break; } } $this->log("Email IS unique: $email (".__FUNCTION__.":".__LINE__.")", NULL); return TRUE; } public function login($username, $password) { // hash password for validation $password = sha1($password); $this->log("Attempting to login with $username / $password: (".__FUNCTION__.":".__LINE__.")", NULL); $user = NULL; // find the user that has the right username/password foreach($this->data['users'] AS $k => $v) { if($v['email'] == $username AND $v['password'] == $password) { $user = $v; break; } } $this->log("Exiting login: (".__FUNCTION__.":".__LINE__.")", $user); return $user; } public function savePost($post_info) { $this->log("Entering savePost: (".__FUNCTION__.":".__LINE__.")", $post_info); $mydata = array(); // check for existing data if(isset($post_info['id']) AND $this->data['posts'][$post_info['id']]) { $mydata = $this->data['posts'][$post_info['id']]; $this->log("Loaded prior posts: ".print_r($mydata, TRUE)." (".__FUNCTION__.":".__LINE__.")"); } $this->log("Before copying over existing values: (".__FUNCTION__.":".__LINE__.")", $mydata); foreach($post_info AS $k => $v) { $mydata[$k] = $post_info[$k]; } $this->log("After copying over existing values: (".__FUNCTION__.":".__LINE__.")", $mydata); // check required fields if($this->validatePost($mydata)) { // if no id, add the next available one if(!isset($mydata['id']) OR (int)$mydata['id'] < 1) { $this->log("No id set: ".DataRepository::DATAFILE." (".__FUNCTION__.":".__LINE__.")"); if(count($this->data['posts']) == 0) { $mydata['id'] = 1; $this->log("Setting id to 1: ".DataRepository::DATAFILE." (".__FUNCTION__.":".__LINE__.")"); } else { $mydata['id'] = max(array_keys($this->data['posts']))+1; $this->log("Found max id and added 1 [".$mydata['id']."]: ".DataRepository::DATAFILE." (".__FUNCTION__.":".__LINE__.")"); } } // set created date if null if(!isset($mydata['created_at'])) { $mydata['created_at'] = date ("Y-m-d H:i:s", time()); } // update modified time $mydata['modified_at'] = date ("Y-m-d H:i:s", time()); // copy into data and save $this->data['posts'][$mydata['id']] = $mydata; $this->log("Before data save: (".__FUNCTION__.":".__LINE__.")", $this->data); $this->writeTheData(); } return TRUE; } public function getAllPosts() { return $this->loadPostsUsers($this->data['posts']); } public function loadPostsUsers($posts) { foreach($posts AS $id => $post) { $posts[$id]['user'] = $this->getUserById($post['user_id']); } return $posts; } public function dump($line_number, $temp = 'NO') { // if(DataRepository::$debug) { if($temp == 'NO') { $temp = $this->data; } echo "<pre>Dumping from line: $line_number\n"; echo json_encode($temp, JSON_PRETTY_PRINT); echo "</pre>"; } } } /* * Change Log * * 1.0.0 * - first version * 1.0.1 * - Added isEmailUnique() function for form validation and precheck on user save * 1.0.2 * - Fixed getAllPosts() to include the post's user info * - Added loadPostsUsers() to load one or more posts with their user info * 1.0.3 * - Added autoload to always add admin Joe. */

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  • Rendering ASP.NET MVC Views to String

    - by Rick Strahl
    It's not uncommon in my applications that I require longish text output that does not have to be rendered into the HTTP output stream. The most common scenario I have for 'template driven' non-Web text is for emails of all sorts. Logon confirmations and verifications, email confirmations for things like orders, status updates or scheduler notifications - all of which require merged text output both within and sometimes outside of Web applications. On other occasions I also need to capture the output from certain views for logging purposes. Rather than creating text output in code, it's much nicer to use the rendering mechanism that ASP.NET MVC already provides by way of it's ViewEngines - using Razor or WebForms views - to render output to a string. This is nice because it uses the same familiar rendering mechanism that I already use for my HTTP output and it also solves the problem of where to store the templates for rendering this content in nothing more than perhaps a separate view folder. The good news is that ASP.NET MVC's rendering engine is much more modular than the full ASP.NET runtime engine which was a real pain in the butt to coerce into rendering output to string. With MVC the rendering engine has been separated out from core ASP.NET runtime, so it's actually a lot easier to get View output into a string. Getting View Output from within an MVC Application If you need to generate string output from an MVC and pass some model data to it, the process to capture this output is fairly straight forward and involves only a handful of lines of code. The catch is that this particular approach requires that you have an active ControllerContext that can be passed to the view. This means that the following approach is limited to access from within Controller methods. Here's a class that wraps the process and provides both instance and static methods to handle the rendering:/// <summary> /// Class that renders MVC views to a string using the /// standard MVC View Engine to render the view. /// /// Note: This class can only be used within MVC /// applications that have an active ControllerContext. /// </summary> public class ViewRenderer { /// <summary> /// Required Controller Context /// </summary> protected ControllerContext Context { get; set; } public ViewRenderer(ControllerContext controllerContext) { Context = controllerContext; } /// <summary> /// Renders a full MVC view to a string. Will render with the full MVC /// View engine including running _ViewStart and merging into _Layout /// </summary> /// <param name="viewPath"> /// The path to the view to render. Either in same controller, shared by /// name or as fully qualified ~/ path including extension /// </param> /// <param name="model">The model to render the view with</param> /// <returns>String of the rendered view or null on error</returns> public string RenderView(string viewPath, object model) { return RenderViewToStringInternal(viewPath, model, false); } /// <summary> /// Renders a partial MVC view to string. Use this method to render /// a partial view that doesn't merge with _Layout and doesn't fire /// _ViewStart. /// </summary> /// <param name="viewPath"> /// The path to the view to render. Either in same controller, shared by /// name or as fully qualified ~/ path including extension /// </param> /// <param name="model">The model to pass to the viewRenderer</param> /// <returns>String of the rendered view or null on error</returns> public string RenderPartialView(string viewPath, object model) { return RenderViewToStringInternal(viewPath, model, true); } public static string RenderView(string viewPath, object model, ControllerContext controllerContext) { ViewRenderer renderer = new ViewRenderer(controllerContext); return renderer.RenderView(viewPath, model); } public static string RenderPartialView(string viewPath, object model, ControllerContext controllerContext) { ViewRenderer renderer = new ViewRenderer(controllerContext); return renderer.RenderPartialView(viewPath, model); } protected string RenderViewToStringInternal(string viewPath, object model, bool partial = false) { // first find the ViewEngine for this view ViewEngineResult viewEngineResult = null; if (partial) viewEngineResult = ViewEngines.Engines.FindPartialView(Context, viewPath); else viewEngineResult = ViewEngines.Engines.FindView(Context, viewPath, null); if (viewEngineResult == null) throw new FileNotFoundException(Properties.Resources.ViewCouldNotBeFound); // get the view and attach the model to view data var view = viewEngineResult.View; Context.Controller.ViewData.Model = model; string result = null; using (var sw = new StringWriter()) { var ctx = new ViewContext(Context, view, Context.Controller.ViewData, Context.Controller.TempData, sw); view.Render(ctx, sw); result = sw.ToString(); } return result; } } The key is the RenderViewToStringInternal method. The method first tries to find the view to render based on its path which can either be in the current controller's view path or the shared view path using its simple name (PasswordRecovery) or alternately by its full virtual path (~/Views/Templates/PasswordRecovery.cshtml). This code should work both for Razor and WebForms views although I've only tried it with Razor Views. Note that WebForms Views might actually be better for plain text as Razor adds all sorts of white space into its output when there are code blocks in the template. The Web Forms engine provides more accurate rendering for raw text scenarios. Once a view engine is found the view to render can be retrieved. Views in MVC render based on data that comes off the controller like the ViewData which contains the model along with the actual ViewData and ViewBag. From the View and some of the Context data a ViewContext is created which is then used to render the view with. The View picks up the Model and other data from the ViewContext internally and processes the View the same it would be processed if it were to send its output into the HTTP output stream. The difference is that we can override the ViewContext's output stream which we provide and capture into a StringWriter(). After rendering completes the result holds the output string. If an error occurs the error behavior is similar what you see with regular MVC errors - you get a full yellow screen of death including the view error information with the line of error highlighted. It's your responsibility to handle the error - or let it bubble up to your regular Controller Error filter if you have one. To use the simple class you only need a single line of code if you call the static methods. Here's an example of some Controller code that is used to send a user notification to a customer via email in one of my applications:[HttpPost] public ActionResult ContactSeller(ContactSellerViewModel model) { InitializeViewModel(model); var entryBus = new busEntry(); var entry = entryBus.LoadByDisplayId(model.EntryId); if ( string.IsNullOrEmpty(model.Email) ) entryBus.ValidationErrors.Add("Email address can't be empty.","Email"); if ( string.IsNullOrEmpty(model.Message)) entryBus.ValidationErrors.Add("Message can't be empty.","Message"); model.EntryId = entry.DisplayId; model.EntryTitle = entry.Title; if (entryBus.ValidationErrors.Count > 0) { ErrorDisplay.AddMessages(entryBus.ValidationErrors); ErrorDisplay.ShowError("Please correct the following:"); } else { string message = ViewRenderer.RenderView("~/views/template/ContactSellerEmail.cshtml",model, ControllerContext); string title = entry.Title + " (" + entry.DisplayId + ") - " + App.Configuration.ApplicationName; AppUtils.SendEmail(title, message, model.Email, entry.User.Email, false, false)) } return View(model); } Simple! The view in this case is just a plain MVC view and in this case it's a very simple plain text email message (edited for brevity here) that is created and sent off:@model ContactSellerViewModel @{ Layout = null; }re: @Model.EntryTitle @Model.ListingUrl @Model.Message ** SECURITY ADVISORY - AVOID SCAMS ** Avoid: wiring money, cross-border deals, work-at-home ** Beware: cashier checks, money orders, escrow, shipping ** More Info: @(App.Configuration.ApplicationBaseUrl)scams.html Obviously this is a very simple view (I edited out more from this page to keep it brief) -  but other template views are much more complex HTML documents or long messages that are occasionally updated and they are a perfect fit for Razor rendering. It even works with nested partial views and _layout pages. Partial Rendering Notice that I'm rendering a full View here. In the view I explicitly set the Layout=null to avoid pulling in _layout.cshtml for this view. This can also be controlled externally by calling the RenderPartial method instead: string message = ViewRenderer.RenderPartialView("~/views/template/ContactSellerEmail.cshtml",model, ControllerContext); with this line of code no layout page (or _viewstart) will be loaded, so the output generated is just what's in the view. I find myself using Partials most of the time when rendering templates, since the target of templates usually tend to be emails or other HTML fragment like output, so the RenderPartialView() method is definitely useful to me. Rendering without a ControllerContext The preceding class is great when you're need template rendering from within MVC controller actions or anywhere where you have access to the request Controller. But if you don't have a controller context handy - maybe inside a utility function that is static, a non-Web application, or an operation that runs asynchronously in ASP.NET - which makes using the above code impossible. I haven't found a way to manually create a Controller context to provide the ViewContext() what it needs from outside of the MVC infrastructure. However, there are ways to accomplish this,  but they are a bit more complex. It's possible to host the RazorEngine on your own, which side steps all of the MVC framework and HTTP and just deals with the raw rendering engine. I wrote about this process in Hosting the Razor Engine in Non-Web Applications a long while back. It's quite a process to create a custom Razor engine and runtime, but it allows for all sorts of flexibility. There's also a RazorEngine CodePlex project that does something similar. I've been meaning to check out the latter but haven't gotten around to it since I have my own code to do this. The trick to hosting the RazorEngine to have it behave properly inside of an ASP.NET application and properly cache content so templates aren't constantly rebuild and reparsed. Anyway, in the same app as above I have one scenario where no ControllerContext is available: I have a background scheduler running inside of the app that fires on timed intervals. This process could be external but because it's lightweight we decided to fire it right inside of the ASP.NET app on a separate thread. In my app the code that renders these templates does something like this:var model = new SearchNotificationViewModel() { Entries = entries, Notification = notification, User = user }; // TODO: Need logging for errors sending string razorError = null; var result = AppUtils.RenderRazorTemplate("~/views/template/SearchNotificationTemplate.cshtml", model, razorError); which references a couple of helper functions that set up my RazorFolderHostContainer class:public static string RenderRazorTemplate(string virtualPath, object model,string errorMessage = null) { var razor = AppUtils.CreateRazorHost(); var path = virtualPath.Replace("~/", "").Replace("~", "").Replace("/", "\\"); var merged = razor.RenderTemplateToString(path, model); if (merged == null) errorMessage = razor.ErrorMessage; return merged; } /// <summary> /// Creates a RazorStringHostContainer and starts it /// Call .Stop() when you're done with it. /// /// This is a static instance /// </summary> /// <param name="virtualPath"></param> /// <param name="binBasePath"></param> /// <param name="forceLoad"></param> /// <returns></returns> public static RazorFolderHostContainer CreateRazorHost(string binBasePath = null, bool forceLoad = false) { if (binBasePath == null) { if (HttpContext.Current != null) binBasePath = HttpContext.Current.Server.MapPath("~/"); else binBasePath = AppDomain.CurrentDomain.BaseDirectory; } if (_RazorHost == null || forceLoad) { if (!binBasePath.EndsWith("\\")) binBasePath += "\\"; //var razor = new RazorStringHostContainer(); var razor = new RazorFolderHostContainer(); razor.TemplatePath = binBasePath; binBasePath += "bin\\"; razor.BaseBinaryFolder = binBasePath; razor.UseAppDomain = false; razor.ReferencedAssemblies.Add(binBasePath + "ClassifiedsBusiness.dll"); razor.ReferencedAssemblies.Add(binBasePath + "ClassifiedsWeb.dll"); razor.ReferencedAssemblies.Add(binBasePath + "Westwind.Utilities.dll"); razor.ReferencedAssemblies.Add(binBasePath + "Westwind.Web.dll"); razor.ReferencedAssemblies.Add(binBasePath + "Westwind.Web.Mvc.dll"); razor.ReferencedAssemblies.Add("System.Web.dll"); razor.ReferencedNamespaces.Add("System.Web"); razor.ReferencedNamespaces.Add("ClassifiedsBusiness"); razor.ReferencedNamespaces.Add("ClassifiedsWeb"); razor.ReferencedNamespaces.Add("Westwind.Web"); razor.ReferencedNamespaces.Add("Westwind.Utilities"); _RazorHost = razor; _RazorHost.Start(); //_RazorHost.Engine.Configuration.CompileToMemory = false; } return _RazorHost; } The RazorFolderHostContainer essentially is a full runtime that mimics a folder structure like a typical Web app does including caching semantics and compiling code only if code changes on disk. It maps a folder hierarchy to views using the ~/ path syntax. The host is then configured to add assemblies and namespaces. Unfortunately the engine is not exactly like MVC's Razor - the expression expansion and code execution are the same, but some of the support methods like sections, helpers etc. are not all there so templates have to be a bit simpler. There are other folder hosts provided as well to directly execute templates from strings (using RazorStringHostContainer). The following is an example of an HTML email template @inherits RazorHosting.RazorTemplateFolderHost <ClassifiedsWeb.SearchNotificationViewModel> <html> <head> <title>Search Notifications</title> <style> body { margin: 5px;font-family: Verdana, Arial; font-size: 10pt;} h3 { color: SteelBlue; } .entry-item { border-bottom: 1px solid grey; padding: 8px; margin-bottom: 5px; } </style> </head> <body> Hello @Model.User.Name,<br /> <p>Below are your Search Results for the search phrase:</p> <h3>@Model.Notification.SearchPhrase</h3> <small>since @TimeUtils.ShortDateString(Model.Notification.LastSearch)</small> <hr /> You can see that the syntax is a little different. Instead of the familiar @model header the raw Razor  @inherits tag is used to specify the template base class (which you can extend). I took a quick look through the feature set of RazorEngine on CodePlex (now Github I guess) and the template implementation they use is closer to MVC's razor but there are other differences. In the end don't expect exact behavior like MVC templates if you use an external Razor rendering engine. This is not what I would consider an ideal solution, but it works well enough for this project. My biggest concern is the overhead of hosting a second razor engine in a Web app and the fact that here the differences in template rendering between 'real' MVC Razor views and another RazorEngine really are noticeable. You win some, you lose some It's extremely nice to see that if you have a ControllerContext handy (which probably addresses 99% of Web app scenarios) rendering a view to string using the native MVC Razor engine is pretty simple. Kudos on making that happen - as it solves a problem I see in just about every Web application I work on. But it is a bummer that a ControllerContext is required to make this simple code work. It'd be really sweet if there was a way to render views without being so closely coupled to the ASP.NET or MVC infrastructure that requires a ControllerContext. Alternately it'd be nice to have a way for an MVC based application to create a minimal ControllerContext from scratch - maybe somebody's been down that path. I tried for a few hours to come up with a way to make that work but gave up in the soup of nested contexts (MVC/Controller/View/Http). I suspect going down this path would be similar to hosting the ASP.NET runtime requiring a WorkerRequest. Brrr…. The sad part is that it seems to me that a View should really not require much 'context' of any kind to render output to string. Yes there are a few things that clearly are required like paths to the virtual and possibly the disk paths to the root of the app, but beyond that view rendering should not require much. But, no such luck. For now custom RazorHosting seems to be the only way to make Razor rendering go outside of the MVC context… Resources Full ViewRenderer.cs source code from Westwind.Web.Mvc library Hosting the Razor Engine for Non-Web Applications RazorEngine on GitHub© Rick Strahl, West Wind Technologies, 2005-2012Posted in ASP.NET   ASP.NET  MVC   Tweet !function(d,s,id){var js,fjs=d.getElementsByTagName(s)[0];if(!d.getElementById(id)){js=d.createElement(s);js.id=id;js.src="//platform.twitter.com/widgets.js";fjs.parentNode.insertBefore(js,fjs);}}(document,"script","twitter-wjs"); (function() { var po = document.createElement('script'); po.type = 'text/javascript'; po.async = true; po.src = 'https://apis.google.com/js/plusone.js'; var s = document.getElementsByTagName('script')[0]; s.parentNode.insertBefore(po, s); })();

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  • CodePlex Daily Summary for Sunday, March 14, 2010

    CodePlex Daily Summary for Sunday, March 14, 2010New ProjectsBeerMath.net: BeerMath.net lets brewers calculate expected values for their recipes. Written entirely in C#, it can be used in any .Net language.Bible Study: Данный проект предусматривает создание программного обеспечения, предоставляющего пользователю гибкие и мощные инструменты для чтения и изучения Пи...E-Messenger: Description détaillé du sujet : Développement d'une application (client lourd) de messagerie instantané et de partage de fichier interne à ESPRIT....Facebook Azure Toolkit: The Facebook Azure Toolit provides a flexible and scalable hosting platform for the smallest and largest of Facebook applications. This toolkit hel...Gherkin editor: A simple text editor to write specifications using Gherkin. The editor supports code completion, syntax highlighting, spell checker and more.Mydra Center: Mydra Center is a Media center with the particularity to be very flexible, allowing developers to extend it and add new features. The philosophy be...MyTwits - A rich Twitter client for Windows powered by WPF: MyTwits is a free Twitter client for Windows XP/Vista/7 powered by WPF which gives you freedom to twit right from your desktop. You can do almost a...na laborke: aaaaaaaaaaaaaaasssssssssssssssddddddddddddddddddddfffffffffffffNMTools: The "Network Management Tools" (NMTools) complete OpenSLIM CMDB capa­bil­i­ties with Network Discovery, Automa­tion and Con­fig­u­ra­tion Man­age­m...orionSRO: This project aims to make a fully functional server.Project Naduvar: Project Naduvar, is a centralized Locking Service in distribute systems. You can use this service in any of your existing distributed application. ...Silverlight Input Keyboard: Silverlight Input Keyboard and Behaviorsuh: uh.py is a command line tool that helps developers porting native projects from a case-insensitive filesystem to a case-sensitive filesystem by sea...New ReleasesAmiBroker Plug-ins with C#. A non official AmiBroker Plug-in SDK: AmiBroker Plug-in SDK v0.0.3: Small changesAmiBroker Plug-ins with C#. A non official AmiBroker Plug-in SDK: AmiBroker Plug-in SDK v0.0.4: Small updatesAStyle AddIn for SharpDevelop (Alex): 2.0 Production: #D 3.* add in with updated GUI elements.Coding Cockerel code samples: Validation with ASP .NET MVC and jQuery: Code sample related to the following blog post, http://codingcockerel.co.uk/consistent-validation-with-asp-net-mvc-and-jquery/.CoreSystem Library: Release - 1.0.3725.10575: This release contains a new class Crypto which makes encryption and descryption of string easy, it uses TripleDESCrystal Mapper: Release - 2.0.3725.11614: This is preview if release 2.0* that I promised, it contains following new features Tracking dirty entities and provide Save function to save all ...Digital Media Processing Project 1: Image Processor: Image Processor Alpha: First Release Features Include: Curve Adjustment Tool Region Growing Segmetation Threshold Segmentation Guassian/Butterworth High/Low pass filter...Exepack.NET: Exepack.NET version 0.03 beta: Exepack.NET is executable file compressor for .NET Framework. It allows to package your .NET application consisting of an executable file and sever...Export code as Code Snippet - Addin for Visual Studio 2008/2010 RC: VS 2010 Release Candidate: This release targets Visual Studio 2010 Release Candidate. It includes full Visual Basic 2010 source code. Fixes already available in previous ve...Facebook Azure Toolkit: 0.9 Beta: This is the initial beta releaseFamily Tree Analyzer: Version 1.0.5.0: Version 1.0.5.0 Change the way Census & Individual reports columns are sized so that user can resize later. Add filter to exclude individuals over...Home Access Plus+: v3.1.2.1: Version 3.1.2.1 Release Change Log: Added SSL SMTP Added SSL Authentication File Changes: ~/bin/CHS Extranet.dll ~/bin/CHS Extranet.pdb ~/we...Home Access Plus+: v3.1.3.1: Version 3.1.3.1 Release Change Log: Fixed Help Desk File Changes: ~/bin/CHS Extranet.dll ~/bin/CHS Extranet.pdb ~/helpdesk/*.htmIceChat: IceChat 2009 Alpha 11.6 Full Install: IceChat 2009 Alpha 11.6 - Full Installer, installs IceChat 2009, and the Emoticons, and will also download .Net Framework 2.0 if needed.IceChat: IceChat 2009 Alpha 11.6 Simple Binaries: This simply the IceChat2009.exe and the IPluginIceChat.dll needed to run IceChat 2009. Is not an installer, does not include emoticons.IceChat: IceChat 2009 Alpha 11.6 Source Code: IceChat 2009 Alpha 11.6 Source CodeLunar Phase Silverlight Gadget: Lunar Phase RC: Stable release. 6 languages Auto refresh. Name / Light problem fixedMiracle OS: Miracle OS Alpha 0.001: Our first release is the Alpha 0.001. Miracle OS doens't work at all, but we work on it. You to? Please help us.MyTwits - A rich Twitter client for Windows powered by WPF: MyTwits BETA 1: I'm happy to release first BETA version of MyTwits. Just download the zip file attached and run setup.exe and you are done! If you've any problem...MyTwits - A rich Twitter client for Windows powered by WPF: MyTwits Source BETA 1: I'm providing you just a project file, I'll upload complete source code once I fine tuned the code.NMock3: NMock3 - Beta 5, .NET 3.5: Hilights of this releaseTutorials have been updated and are in a much better place now. (they compile) Public API is getting locked down. Void me...Project Naduvar: com.declum.naduvar.locking: First ReleaseQueryToGrid Module for DotNetNuke®: QueryToGrid Module version 01.00.01: This module is a proof of concept for both using AJAX in a DotNetNuke® module, and for using SQL in a module. »»» IMPORTANT NOTE ««« Using this mo...SCSI Interface for Multimedia and Block Devices: Release 10 - Almost like a commercial burner!!: I made many changes in the ISOBurn program in this version, making it much more user-friendly than before. You can now add, rename, and delete file...Silverlight Input Keyboard: Initial Release: For more information see http://www.orktane.com/Blog/post/2009/11/09/Virtual-Input-Keyboard-Behaviours-for-Silverlight.aspxThe Silverlight Hyper Video Player [http://slhvp.com]: RC: The release candidate is now in place. Unfortunately, because there are aspects of it that I'm not yet ready to discuss, the code for the RC will...twNowplaying: twNowplaying 1.0.0.3: Press the Twitter icon to get started, don't forget to submit bugs to the issue tracker. What's new This release has some minor UI fixes.uh: 1.0: This is the first stable release. It isn't super full featured but it does the basics.UriTree: UriTree 2.0.0: This release is the WPF version of this application.VCC: Latest build, v2.1.30313.0: Automatic drop of latest buildVr30 OS: Blackra1n: The software was made by blackra1n for jailbreak iphone and ipod touch. Is not the Vr30 OS Team ProjectVr30 OS: Vr30 Operating System Live Cd 1.0: The Operating system linux made by team. For more information go to http://vr30os.tuxfamily.orgWatchersNET.TagCloud: WatchersNET.TagCloud 01.01.00: Whats New Decide between Tags generated from the Search words, or create your own Tag List Custom Tag list changes Small BugfixesZeta Resource Editor: Source code release 2010-03-13: New sources, some small fixes.ZipStorer - A Pure C# Class to Store Files in Zip: ZipStorer 2.35: Improved UTF-8 Support Correct writting of modification time for extracted filesMost Popular ProjectsMetaSharpWBFS ManagerRawrAJAX Control ToolkitMicrosoft SQL Server Product Samples: DatabaseSilverlight ToolkitWindows Presentation Foundation (WPF)ASP.NET Ajax LibraryASP.NETMicrosoft SQL Server Community & SamplesMost Active ProjectsRawrN2 CMSBlogEngine.NETpatterns & practices – Enterprise LibrarySharePoint Team-MailerFasterflect - A Fast and Simple Reflection APICaliburn: An Application Framework for WPF and SilverlightjQuery Library for SharePoint Web ServicesCalcium: A modular application toolset leveraging PrismFarseer Physics Engine

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  • Video Recording Not Working in ICS

    - by Nirav Ranpara
    I have implement code Record video in Android Phone . This code is working in 2.2 , 2.3 . not in ICS But when I checked in ICS code is not working ? here I posted code and xml file. videorecord.java import java.io.File; import java.io.IOException; import android.app.Activity; import android.app.AlertDialog; import android.content.Context; import android.content.DialogInterface; import android.content.Intent; import android.content.SharedPreferences; import android.hardware.Camera; import android.media.CamcorderProfile; import android.media.MediaRecorder; import android.os.Bundle; import android.os.CountDownTimer; import android.os.Environment; import android.util.Log; import android.view.Display; import android.view.KeyEvent; import android.view.SurfaceHolder; import android.view.SurfaceView; import android.view.View; import android.widget.EditText; import android.widget.FrameLayout; import android.widget.ImageView; import android.widget.LinearLayout; import android.widget.TextView; import android.widget.Toast; public class videorecord extends Activity{ SharedPreferences.Editor pre; String filename; CountDownTimer t; private Camera myCamera; private MyCameraSurfaceView myCameraSurfaceView; private MediaRecorder mediaRecorder; Integer cnt=0; LinearLayout myButton; TextView myButton1; SurfaceHolder surfaceHolder; boolean recording; private TextView txtcount; private ImageView btnplay; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); recording = false; setContentView(R.layout.videorecord); init(); myCamera = getCameraInstance(); if(myCamera == null){ } myCameraSurfaceView = new MyCameraSurfaceView(this, myCamera); FrameLayout myCameraPreview = (FrameLayout)findViewById(R.id.videoview); Display display = getWindowManager().getDefaultDisplay(); int width = display.getWidth(); int height = display.getHeight(); myCameraSurfaceView.setLayoutParams(new LinearLayout.LayoutParams(width, height-60)); myCameraPreview.addView(myCameraSurfaceView); myButton = (LinearLayout)findViewById(R.id.mybutton); btnplay.setOnClickListener(myButtonOnClickListener); } private void init() { txtcount = (TextView) findViewById(R.id.txtcounter); //myButton1 = (TextView) findViewById(R.id.mybutton1); btnplay = (ImageView)findViewById(R.id.btnplay); t = new CountDownTimer( Long.MAX_VALUE , 1000) { @Override public void onTick(long millisUntilFinished) { cnt++; String time = new Integer(cnt).toString(); long millis = cnt; int seconds = (int) (millis / 60); int minutes = seconds / 60; seconds = seconds % 60; txtcount.setText(String.format("%d:%02d:%02d", minutes, seconds,millis)); } @Override public void onFinish() { } }; } @Override public boolean onKeyDown(int keyCode, KeyEvent event) { if ((keyCode == KeyEvent.KEYCODE_BACK)) { if(recording) { new AlertDialog.Builder(videorecord.this).setTitle("Do you want to save Video ?") .setPositiveButton("OK", new DialogInterface.OnClickListener() { public void onClick(DialogInterface dialog, int which) { filename(); //finish(); } }).setNegativeButton("Cancle", new DialogInterface.OnClickListener() { public void onClick(DialogInterface dialog, int which) { // TODO Auto-generated method stub } }).show(); } else { if ((keyCode == KeyEvent.KEYCODE_BACK)) { //Intent homeIntent= new Intent(Intent.ACTION_MAIN); //homeIntent.addCategory(Intent.CATEGORY_HOME); //homeIntent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP); //startActivity(homeIntent); //this.finishActivity(1); finish(); } //moveTaskToBack(true); // finish(); return super.onKeyDown(keyCode, event); } } else { // Toast.makeText(getApplicationContext(), "asd", Toast.LENGTH_LONG).show(); android.os.Process.killProcess(android.os.Process.myPid()) ; } return super.onKeyDown(keyCode, event); } ImageView.OnClickListener myButtonOnClickListener = new ImageView.OnClickListener(){ public void onClick(View v) { if(recording){ Log.e("Record error", "error in recording ."); mediaRecorder.stop(); t.cancel(); filename(); releaseMediaRecorder(); }else{ releaseCamera(); Log.e("Record Stop error", "error in recording ."); // if(!prepareMediaRecorder()){ prepareMediaRecorder(); finish(); } mediaRecorder.start(); recording = true; // myButton1.setText("STOP Recording"); // btnplay.setImageResource(android.R.drawable.ic_media_pause); btnplay.setImageResource(R.drawable.stoprec); t.start(); } }}; private Camera getCameraInstance(){ Camera c = null; try { c = Camera.open(); } catch (Exception e){ } return c; } private void filename() { AlertDialog.Builder alert = new AlertDialog.Builder(this); alert.setTitle("Save Video"); alert.setMessage("Enter File Name"); final EditText input = new EditText(this); alert.setView(input); alert.setPositiveButton("Ok", new DialogInterface.OnClickListener() { public void onClick(DialogInterface dialog, int whichButton) { if(input.getText().length()>=1) { filename = input.getText().toString(); File sdcard = new File(Environment.getExternalStorageDirectory() + "/VideoRecord"); File from = new File(sdcard,"null.mp4"); File to = new File(sdcard,filename+".mp4"); from.renameTo(to); SharedPreferences sp = videorecord.this.getSharedPreferences("data", MODE_WORLD_WRITEABLE); pre = sp.edit(); pre.clear(); pre.commit(); pre.putString("lastvideo", filename+".mp4"); pre.commit(); //btnplay.setImageResource(android.R.drawable.ic_media_play); btnplay.setImageResource(R.drawable.startrec); // Intent intent = new Intent(videorecord.this,StopVidoWatch_Activity.class); // startActivity(intent); Intent myIntent = new Intent(getApplicationContext(), StopVidoWatch_Activity.class).setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP); startActivity(myIntent); } else { filename(); } } }); alert.setNegativeButton("Cancel", new DialogInterface.OnClickListener() { public void onClick(DialogInterface dialog, int whichButton) { // Intent intent = new Intent(videorecord.this,StopVidoWatch_Activity.class); // startActivity(intent); File file = new File(Environment.getExternalStorageDirectory() + "/VideoRecord/null.mp4"); //boolean deleted = file.delete(); file.delete(); finish(); } }); alert.show(); } private boolean prepareMediaRecorder(){ myCamera = getCameraInstance(); mediaRecorder = new MediaRecorder(); myCamera.unlock(); mediaRecorder.setCamera(myCamera); mediaRecorder.setAudioSource(MediaRecorder.AudioSource.CAMCORDER); mediaRecorder.setVideoSource(MediaRecorder.VideoSource.CAMERA); mediaRecorder.setProfile(CamcorderProfile.get(CamcorderProfile.QUALITY_HIGH)); File folder = new File(Environment.getExternalStorageDirectory() + "/VideoRecord"); boolean success = false; if (!folder.exists()) { success = folder.mkdir(); } if (!success) { } else { } mediaRecorder.setOutputFile("/sdcard/VideoRecord/"+filename+".mp4"); mediaRecorder.setMaxDuration(60000); mediaRecorder.setMaxFileSize(5000000); Display display = getWindowManager().getDefaultDisplay(); int width = display.getHeight(); int height = display.getWidth(); String s = new String(); s= s.valueOf(width); String s1 = new String(); s1= s1.valueOf(height); // Toast.makeText(videorecord.this, "Width : " + s , Toast.LENGTH_LONG).show(); // Toast.makeText(videorecord.this, "Height : " + s1 , Toast.LENGTH_LONG).show(); mediaRecorder.setVideoSize(height, width); mediaRecorder.setPreviewDisplay(myCameraSurfaceView.getHolder().getSurface()); try { mediaRecorder.prepare(); } catch (IllegalStateException e) { releaseMediaRecorder(); return false; } catch (IOException e) { releaseMediaRecorder(); return false; } return true; } @Override protected void onPause() { super.onPause(); releaseMediaRecorder(); releaseCamera(); } private void releaseMediaRecorder() { if (mediaRecorder != null) { mediaRecorder.reset(); mediaRecorder.release(); mediaRecorder = null; myCamera.lock(); } } private void releaseCamera(){ if (myCamera != null){ myCamera.release(); myCamera = null; } } public class MyCameraSurfaceView extends SurfaceView implements SurfaceHolder.Callback{ private SurfaceHolder mHolder; private Camera mCamera; public MyCameraSurfaceView(Context context, Camera camera) { super(context); mCamera = camera; mHolder = getHolder(); mHolder.addCallback(this); mHolder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS); } public void surfaceChanged(SurfaceHolder holder, int format, int weight, int height) { if (mHolder.getSurface() == null){ return; } try { mCamera.stopPreview(); } catch (Exception e){ } try { mCamera.setPreviewDisplay(mHolder); mCamera.startPreview(); } catch (Exception e){ } } public void surfaceCreated(SurfaceHolder holder) { try { mCamera.setPreviewDisplay(holder); mCamera.startPreview(); } catch (IOException e) { } } public void surfaceDestroyed(SurfaceHolder holder) { } } } videorecord.xml <?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:orientation="vertical" android:layout_width="fill_parent" android:layout_height="fill_parent" > <FrameLayout android:layout_width="fill_parent" android:layout_height="fill_parent" > <FrameLayout android:id="@+id/videoview" android:layout_width="fill_parent" android:layout_height="fill_parent"></FrameLayout> <LinearLayout android:id="@+id/mybutton" android:layout_width="fill_parent" android:layout_marginBottom="0dip" android:layout_height="wrap_content" android:orientation="horizontal" android:layout_weight="0" > <!-- <TextView android:text="START Recording" android:id="@+id/mybutton1" android:layout_height="wrap_content" android:layout_width="wrap_content" style="@style/savestyle" android:layout_weight="1" android:gravity="left" > </TextView> --> <ImageView android:layout_height="wrap_content" android:id="@+id/btnplay" android:padding="5dip" android:background="#A0000000" android:textColor="#ffffffff" android:layout_width="wrap_content" android:src="@drawable/startrec" /> </LinearLayout> <TextView android:text="00:00:00" android:id="@+id/txtcounter" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_gravity="right|bottom" android:padding="5dip" android:background="#A0000000" android:textColor="#ffffffff" /> </FrameLayout> <RelativeLayout android:layout_width="fill_parent" android:layout_height="fill_parent" android:background="@color/bgcolor" > <LinearLayout android:layout_above="@+id/mybutton" android:orientation="horizontal" android:layout_width="fill_parent" android:layout_height="fill_parent" > </LinearLayout> </RelativeLayout> </LinearLayout>

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  • Ask How-To Geek: Tiling Windows, iOS Remote Desktop, and Getting a Handle on Windows 7 Libraries

    - by Jason Fitzpatrick
    This week we’re taking a look at how to tile application windows in Windows 7, remote controlling your desktop from iOS devices, and understanding exactly what Windows 7 libraries are. Once a week we dip into our reader mailbag and help readers solve their problems, sharing the useful solutions with you in the process. Read on to see the fixes for this week’s reader dilemmas. Latest Features How-To Geek ETC How To Colorize Black and White Vintage Photographs in Photoshop How To Get SSH Command-Line Access to Windows 7 Using Cygwin The How-To Geek Video Guide to Using Windows 7 Speech Recognition How To Create Your Own Custom ASCII Art from Any Image How To Process Camera Raw Without Paying for Adobe Photoshop How Do You Block Annoying Text Message (SMS) Spam? Battlestar Galactica – Caprica Map of the 12 Colonies (Wallpaper Also Available) View Enlarged Versions of Thumbnail Images with Thumbnail Zoom for Firefox IntoNow Identifies Any TV Show by Sound Walk Score Calculates a Neighborhood’s Pedestrian Friendliness Factor Fantasy World at Twilight Wallpaper Hack a Wireless Doorbell into a Snail Mail Indicator

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  • Heaps of Trouble?

    - by Paul White NZ
    If you’re not already a regular reader of Brad Schulz’s blog, you’re missing out on some great material.  In his latest entry, he is tasked with optimizing a query run against tables that have no indexes at all.  The problem is, predictably, that performance is not very good.  The catch is that we are not allowed to create any indexes (or even new statistics) as part of our optimization efforts. In this post, I’m going to look at the problem from a slightly different angle, and present an alternative solution to the one Brad found.  Inevitably, there’s going to be some overlap between our entries, and while you don’t necessarily need to read Brad’s post before this one, I do strongly recommend that you read it at some stage; he covers some important points that I won’t cover again here. The Example We’ll use data from the AdventureWorks database, copied to temporary unindexed tables.  A script to create these structures is shown below: CREATE TABLE #Custs ( CustomerID INTEGER NOT NULL, TerritoryID INTEGER NULL, CustomerType NCHAR(1) COLLATE SQL_Latin1_General_CP1_CI_AI NOT NULL, ); GO CREATE TABLE #Prods ( ProductMainID INTEGER NOT NULL, ProductSubID INTEGER NOT NULL, ProductSubSubID INTEGER NOT NULL, Name NVARCHAR(50) COLLATE SQL_Latin1_General_CP1_CI_AI NOT NULL, ); GO CREATE TABLE #OrdHeader ( SalesOrderID INTEGER NOT NULL, OrderDate DATETIME NOT NULL, SalesOrderNumber NVARCHAR(25) COLLATE SQL_Latin1_General_CP1_CI_AI NOT NULL, CustomerID INTEGER NOT NULL, ); GO CREATE TABLE #OrdDetail ( SalesOrderID INTEGER NOT NULL, OrderQty SMALLINT NOT NULL, LineTotal NUMERIC(38,6) NOT NULL, ProductMainID INTEGER NOT NULL, ProductSubID INTEGER NOT NULL, ProductSubSubID INTEGER NOT NULL, ); GO INSERT #Custs ( CustomerID, TerritoryID, CustomerType ) SELECT C.CustomerID, C.TerritoryID, C.CustomerType FROM AdventureWorks.Sales.Customer C WITH (TABLOCK); GO INSERT #Prods ( ProductMainID, ProductSubID, ProductSubSubID, Name ) SELECT P.ProductID, P.ProductID, P.ProductID, P.Name FROM AdventureWorks.Production.Product P WITH (TABLOCK); GO INSERT #OrdHeader ( SalesOrderID, OrderDate, SalesOrderNumber, CustomerID ) SELECT H.SalesOrderID, H.OrderDate, H.SalesOrderNumber, H.CustomerID FROM AdventureWorks.Sales.SalesOrderHeader H WITH (TABLOCK); GO INSERT #OrdDetail ( SalesOrderID, OrderQty, LineTotal, ProductMainID, ProductSubID, ProductSubSubID ) SELECT D.SalesOrderID, D.OrderQty, D.LineTotal, D.ProductID, D.ProductID, D.ProductID FROM AdventureWorks.Sales.SalesOrderDetail D WITH (TABLOCK); The query itself is a simple join of the four tables: SELECT P.ProductMainID AS PID, P.Name, D.OrderQty, H.SalesOrderNumber, H.OrderDate, C.TerritoryID FROM #Prods P JOIN #OrdDetail D ON P.ProductMainID = D.ProductMainID AND P.ProductSubID = D.ProductSubID AND P.ProductSubSubID = D.ProductSubSubID JOIN #OrdHeader H ON D.SalesOrderID = H.SalesOrderID JOIN #Custs C ON H.CustomerID = C.CustomerID ORDER BY P.ProductMainID ASC OPTION (RECOMPILE, MAXDOP 1); Remember that these tables have no indexes at all, and only the single-column sampled statistics SQL Server automatically creates (assuming default settings).  The estimated query plan produced for the test query looks like this (click to enlarge): The Problem The problem here is one of cardinality estimation – the number of rows SQL Server expects to find at each step of the plan.  The lack of indexes and useful statistical information means that SQL Server does not have the information it needs to make a good estimate.  Every join in the plan shown above estimates that it will produce just a single row as output.  Brad covers the factors that lead to the low estimates in his post. In reality, the join between the #Prods and #OrdDetail tables will produce 121,317 rows.  It should not surprise you that this has rather dire consequences for the remainder of the query plan.  In particular, it makes a nonsense of the optimizer’s decision to use Nested Loops to join to the two remaining tables.  Instead of scanning the #OrdHeader and #Custs tables once (as it expected), it has to perform 121,317 full scans of each.  The query takes somewhere in the region of twenty minutes to run to completion on my development machine. A Solution At this point, you may be thinking the same thing I was: if we really are stuck with no indexes, the best we can do is to use hash joins everywhere. We can force the exclusive use of hash joins in several ways, the two most common being join and query hints.  A join hint means writing the query using the INNER HASH JOIN syntax; using a query hint involves adding OPTION (HASH JOIN) at the bottom of the query.  The difference is that using join hints also forces the order of the join, whereas the query hint gives the optimizer freedom to reorder the joins at its discretion. Adding the OPTION (HASH JOIN) hint results in this estimated plan: That produces the correct output in around seven seconds, which is quite an improvement!  As a purely practical matter, and given the rigid rules of the environment we find ourselves in, we might leave things there.  (We can improve the hashing solution a bit – I’ll come back to that later on). Faster Nested Loops It might surprise you to hear that we can beat the performance of the hash join solution shown above using nested loops joins exclusively, and without breaking the rules we have been set. The key to this part is to realize that a condition like (A = B) can be expressed as (A <= B) AND (A >= B).  Armed with this tremendous new insight, we can rewrite the join predicates like so: SELECT P.ProductMainID AS PID, P.Name, D.OrderQty, H.SalesOrderNumber, H.OrderDate, C.TerritoryID FROM #OrdDetail D JOIN #OrdHeader H ON D.SalesOrderID >= H.SalesOrderID AND D.SalesOrderID <= H.SalesOrderID JOIN #Custs C ON H.CustomerID >= C.CustomerID AND H.CustomerID <= C.CustomerID JOIN #Prods P ON P.ProductMainID >= D.ProductMainID AND P.ProductMainID <= D.ProductMainID AND P.ProductSubID = D.ProductSubID AND P.ProductSubSubID = D.ProductSubSubID ORDER BY D.ProductMainID OPTION (RECOMPILE, LOOP JOIN, MAXDOP 1, FORCE ORDER); I’ve also added LOOP JOIN and FORCE ORDER query hints to ensure that only nested loops joins are used, and that the tables are joined in the order they appear.  The new estimated execution plan is: This new query runs in under 2 seconds. Why Is It Faster? The main reason for the improvement is the appearance of the eager Index Spools, which are also known as index-on-the-fly spools.  If you read my Inside The Optimiser series you might be interested to know that the rule responsible is called JoinToIndexOnTheFly. An eager index spool consumes all rows from the table it sits above, and builds a index suitable for the join to seek on.  Taking the index spool above the #Custs table as an example, it reads all the CustomerID and TerritoryID values with a single scan of the table, and builds an index keyed on CustomerID.  The term ‘eager’ means that the spool consumes all of its input rows when it starts up.  The index is built in a work table in tempdb, has no associated statistics, and only exists until the query finishes executing. The result is that each unindexed table is only scanned once, and just for the columns necessary to build the temporary index.  From that point on, every execution of the inner side of the join is answered by a seek on the temporary index – not the base table. A second optimization is that the sort on ProductMainID (required by the ORDER BY clause) is performed early, on just the rows coming from the #OrdDetail table.  The optimizer has a good estimate for the number of rows it needs to sort at that stage – it is just the cardinality of the table itself.  The accuracy of the estimate there is important because it helps determine the memory grant given to the sort operation.  Nested loops join preserves the order of rows on its outer input, so sorting early is safe.  (Hash joins do not preserve order in this way, of course). The extra lazy spool on the #Prods branch is a further optimization that avoids executing the seek on the temporary index if the value being joined (the ‘outer reference’) hasn’t changed from the last row received on the outer input.  It takes advantage of the fact that rows are still sorted on ProductMainID, so if duplicates exist, they will arrive at the join operator one after the other. The optimizer is quite conservative about introducing index spools into a plan, because creating and dropping a temporary index is a relatively expensive operation.  It’s presence in a plan is often an indication that a useful index is missing. I want to stress that I rewrote the query in this way primarily as an educational exercise – I can’t imagine having to do something so horrible to a production system. Improving the Hash Join I promised I would return to the solution that uses hash joins.  You might be puzzled that SQL Server can create three new indexes (and perform all those nested loops iterations) faster than it can perform three hash joins.  The answer, again, is down to the poor information available to the optimizer.  Let’s look at the hash join plan again: Two of the hash joins have single-row estimates on their build inputs.  SQL Server fixes the amount of memory available for the hash table based on this cardinality estimate, so at run time the hash join very quickly runs out of memory. This results in the join spilling hash buckets to disk, and any rows from the probe input that hash to the spilled buckets also get written to disk.  The join process then continues, and may again run out of memory.  This is a recursive process, which may eventually result in SQL Server resorting to a bailout join algorithm, which is guaranteed to complete eventually, but may be very slow.  The data sizes in the example tables are not large enough to force a hash bailout, but it does result in multiple levels of hash recursion.  You can see this for yourself by tracing the Hash Warning event using the Profiler tool. The final sort in the plan also suffers from a similar problem: it receives very little memory and has to perform multiple sort passes, saving intermediate runs to disk (the Sort Warnings Profiler event can be used to confirm this).  Notice also that because hash joins don’t preserve sort order, the sort cannot be pushed down the plan toward the #OrdDetail table, as in the nested loops plan. Ok, so now we understand the problems, what can we do to fix it?  We can address the hash spilling by forcing a different order for the joins: SELECT P.ProductMainID AS PID, P.Name, D.OrderQty, H.SalesOrderNumber, H.OrderDate, C.TerritoryID FROM #Prods P JOIN #Custs C JOIN #OrdHeader H ON H.CustomerID = C.CustomerID JOIN #OrdDetail D ON D.SalesOrderID = H.SalesOrderID ON P.ProductMainID = D.ProductMainID AND P.ProductSubID = D.ProductSubID AND P.ProductSubSubID = D.ProductSubSubID ORDER BY D.ProductMainID OPTION (MAXDOP 1, HASH JOIN, FORCE ORDER); With this plan, each of the inputs to the hash joins has a good estimate, and no hash recursion occurs.  The final sort still suffers from the one-row estimate problem, and we get a single-pass sort warning as it writes rows to disk.  Even so, the query runs to completion in three or four seconds.  That’s around half the time of the previous hashing solution, but still not as fast as the nested loops trickery. Final Thoughts SQL Server’s optimizer makes cost-based decisions, so it is vital to provide it with accurate information.  We can’t really blame the performance problems highlighted here on anything other than the decision to use completely unindexed tables, and not to allow the creation of additional statistics. I should probably stress that the nested loops solution shown above is not one I would normally contemplate in the real world.  It’s there primarily for its educational and entertainment value.  I might perhaps use it to demonstrate to the sceptical that SQL Server itself is crying out for an index. Be sure to read Brad’s original post for more details.  My grateful thanks to him for granting permission to reuse some of his material. Paul White Email: [email protected] Twitter: @PaulWhiteNZ

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  • New Version: ZFS RAID Calculator v7

    - by uwes
    New version available now. ZFS RAID Calculator v7 on eSTEP portal. The Tool calculates key capacity parameter like  number of Vdev's, number of spares, number of data drives, raw RAID capacity(TB), usable capacity (TiB) and (TB) according the different possible  RAID types for a given ZS3 configuration. Updates included in v7: added an open office version compatible with MacOS included the obsolete drives as options for upgrade calculations simplified the color scheme and tweaked the formulas for better compatibility The spreadsheet can be downloaded from eSTEP portal. URL: http://launch.oracle.com/ PIN: eSTEP_2011 The material can be found under tab eSTEP Download.

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  • Passing multiple simple POST Values to ASP.NET Web API

    - by Rick Strahl
    A few weeks backs I posted a blog post  about what does and doesn't work with ASP.NET Web API when it comes to POSTing data to a Web API controller. One of the features that doesn't work out of the box - somewhat unexpectedly -  is the ability to map POST form variables to simple parameters of a Web API method. For example imagine you have this form and you want to post this data to a Web API end point like this via AJAX: <form> Name: <input type="name" name="name" value="Rick" /> Value: <input type="value" name="value" value="12" /> Entered: <input type="entered" name="entered" value="12/01/2011" /> <input type="button" id="btnSend" value="Send" /> </form> <script type="text/javascript"> $("#btnSend").click( function() { $.post("samples/PostMultipleSimpleValues?action=kazam", $("form").serialize(), function (result) { alert(result); }); }); </script> or you might do this more explicitly by creating a simple client map and specifying the POST values directly by hand:$.post("samples/PostMultipleSimpleValues?action=kazam", { name: "Rick", value: 1, entered: "12/01/2012" }, $("form").serialize(), function (result) { alert(result); }); On the wire this generates a simple POST request with Url Encoded values in the content:POST /AspNetWebApi/samples/PostMultipleSimpleValues?action=kazam HTTP/1.1 Host: localhost User-Agent: Mozilla/5.0 (Windows NT 6.2; WOW64; rv:15.0) Gecko/20100101 Firefox/15.0.1 Accept: application/json Connection: keep-alive Content-Type: application/x-www-form-urlencoded; charset=UTF-8 X-Requested-With: XMLHttpRequest Referer: http://localhost/AspNetWebApi/FormPostTest.html Content-Length: 41 Pragma: no-cache Cache-Control: no-cachename=Rick&value=12&entered=12%2F10%2F2011 Seems simple enough, right? We are basically posting 3 form variables and 1 query string value to the server. Unfortunately Web API can't handle request out of the box. If I create a method like this:[HttpPost] public string PostMultipleSimpleValues(string name, int value, DateTime entered, string action = null) { return string.Format("Name: {0}, Value: {1}, Date: {2}, Action: {3}", name, value, entered, action); }You'll find that you get an HTTP 404 error and { "Message": "No HTTP resource was found that matches the request URI…"} Yes, it's possible to pass multiple POST parameters of course, but Web API expects you to use Model Binding for this - mapping the post parameters to a strongly typed .NET object, not to single parameters. Alternately you can also accept a FormDataCollection parameter on your API method to get a name value collection of all POSTed values. If you're using JSON only, using the dynamic JObject/JValue objects might also work. ModelBinding is fine in many use cases, but can quickly become overkill if you only need to pass a couple of simple parameters to many methods. Especially in applications with many, many AJAX callbacks the 'parameter mapping type' per method signature can lead to serious class pollution in a project very quickly. Simple POST variables are also commonly used in AJAX applications to pass data to the server, even in many complex public APIs. So this is not an uncommon use case, and - maybe more so a behavior that I would have expected Web API to support natively. The question "Why aren't my POST parameters mapping to Web API method parameters" is already a frequent one… So this is something that I think is fairly important, but unfortunately missing in the base Web API installation. Creating a Custom Parameter Binder Luckily Web API is greatly extensible and there's a way to create a custom Parameter Binding to provide this functionality! Although this solution took me a long while to find and then only with the help of some folks Microsoft (thanks Hong Mei!!!), it's not difficult to hook up in your own projects. It requires one small class and a GlobalConfiguration hookup. Web API parameter bindings allow you to intercept processing of individual parameters - they deal with mapping parameters to the signature as well as converting the parameters to the actual values that are returned. Here's the implementation of the SimplePostVariableParameterBinding class:public class SimplePostVariableParameterBinding : HttpParameterBinding { private const string MultipleBodyParameters = "MultipleBodyParameters"; public SimplePostVariableParameterBinding(HttpParameterDescriptor descriptor) : base(descriptor) { } /// <summary> /// Check for simple binding parameters in POST data. Bind POST /// data as well as query string data /// </summary> public override Task ExecuteBindingAsync(ModelMetadataProvider metadataProvider, HttpActionContext actionContext, CancellationToken cancellationToken) { // Body can only be read once, so read and cache it NameValueCollection col = TryReadBody(actionContext.Request); string stringValue = null; if (col != null) stringValue = col[Descriptor.ParameterName]; // try reading query string if we have no POST/PUT match if (stringValue == null) { var query = actionContext.Request.GetQueryNameValuePairs(); if (query != null) { var matches = query.Where(kv => kv.Key.ToLower() == Descriptor.ParameterName.ToLower()); if (matches.Count() > 0) stringValue = matches.First().Value; } } object value = StringToType(stringValue); // Set the binding result here SetValue(actionContext, value); // now, we can return a completed task with no result TaskCompletionSource<AsyncVoid> tcs = new TaskCompletionSource<AsyncVoid>(); tcs.SetResult(default(AsyncVoid)); return tcs.Task; } private object StringToType(string stringValue) { object value = null; if (stringValue == null) value = null; else if (Descriptor.ParameterType == typeof(string)) value = stringValue; else if (Descriptor.ParameterType == typeof(int)) value = int.Parse(stringValue, CultureInfo.CurrentCulture); else if (Descriptor.ParameterType == typeof(Int32)) value = Int32.Parse(stringValue, CultureInfo.CurrentCulture); else if (Descriptor.ParameterType == typeof(Int64)) value = Int64.Parse(stringValue, CultureInfo.CurrentCulture); else if (Descriptor.ParameterType == typeof(decimal)) value = decimal.Parse(stringValue, CultureInfo.CurrentCulture); else if (Descriptor.ParameterType == typeof(double)) value = double.Parse(stringValue, CultureInfo.CurrentCulture); else if (Descriptor.ParameterType == typeof(DateTime)) value = DateTime.Parse(stringValue, CultureInfo.CurrentCulture); else if (Descriptor.ParameterType == typeof(bool)) { value = false; if (stringValue == "true" || stringValue == "on" || stringValue == "1") value = true; } else value = stringValue; return value; } /// <summary> /// Read and cache the request body /// </summary> /// <param name="request"></param> /// <returns></returns> private NameValueCollection TryReadBody(HttpRequestMessage request) { object result = null; // try to read out of cache first if (!request.Properties.TryGetValue(MultipleBodyParameters, out result)) { // parsing the string like firstname=Hongmei&lastname=Ge result = request.Content.ReadAsFormDataAsync().Result; request.Properties.Add(MultipleBodyParameters, result); } return result as NameValueCollection; } private struct AsyncVoid { } }   The ExecuteBindingAsync method is fired for each parameter that is mapped and sent for conversion. This custom binding is fired only if the incoming parameter is a simple type (that gets defined later when I hook up the binding), so this binding never fires on complex types or if the first type is not a simple type. For the first parameter of a request the Binding first reads the request body into a NameValueCollection and caches that in the request.Properties collection. The request body can only be read once, so the first parameter request reads it and then caches it. Subsequent parameters then use the cached POST value collection. Once the form collection is available the value of the parameter is read, and the value is translated into the target type requested by the Descriptor. SetValue writes out the value to be mapped. Once you have the ParameterBinding in place, the binding has to be assigned. This is done along with all other Web API configuration tasks at application startup in global.asax's Application_Start:GlobalConfiguration.Configuration.ParameterBindingRules .Insert(0, (HttpParameterDescriptor descriptor) => { var supportedMethods = descriptor.ActionDescriptor.SupportedHttpMethods; // Only apply this binder on POST and PUT operations if (supportedMethods.Contains(HttpMethod.Post) || supportedMethods.Contains(HttpMethod.Put)) { var supportedTypes = new Type[] { typeof(string), typeof(int), typeof(decimal), typeof(double), typeof(bool), typeof(DateTime) }; if (supportedTypes.Where(typ => typ == descriptor.ParameterType).Count() > 0) return new SimplePostVariableParameterBinding(descriptor); } // let the default bindings do their work return null; });   The ParameterBindingRules.Insert method takes a delegate that checks which type of requests it should handle. The logic here checks whether the request is POST or PUT and whether the parameter type is a simple type that is supported. Web API calls this delegate once for each method signature it tries to map and the delegate returns null to indicate it's not handling this parameter, or it returns a new parameter binding instance - in this case the SimplePostVariableParameterBinding. Once the parameter binding and this hook up code is in place, you can now pass simple POST values to methods with simple parameters. The examples I showed above should now work in addition to the standard bindings. Summary Clearly this is not easy to discover. I spent quite a bit of time digging through the Web API source trying to figure this out on my own without much luck. It took Hong Mei at Micrsoft to provide a base example as I asked around so I can't take credit for this solution :-). But once you know where to look, Web API is brilliantly extensible to make it relatively easy to customize the parameter behavior. I'm very stoked that this got resolved  - in the last two months I've had two customers with projects that decided not to use Web API in AJAX heavy SPA applications because this POST variable mapping wasn't available. This might actually change their mind to still switch back and take advantage of the many great features in Web API. I too frequently use plain POST variables for communicating with server AJAX handlers and while I could have worked around this (with untyped JObject or the Form collection mostly), having proper POST to parameter mapping makes things much easier. I said this in my last post on POST data and say it again here: I think POST to method parameter mapping should have been shipped in the box with Web API, because without knowing about this limitation the expectation is that simple POST variables map to parameters just like query string values do. I hope Microsoft considers including this type of functionality natively in the next version of Web API natively or at least as a built-in HttpParameterBinding that can be just added. This is especially true, since this binding doesn't affect existing bindings. Resources SimplePostVariableParameterBinding Source on GitHub Global.asax hookup source Mapping URL Encoded Post Values in  ASP.NET Web API© Rick Strahl, West Wind Technologies, 2005-2012Posted in Web Api  AJAX   Tweet !function(d,s,id){var js,fjs=d.getElementsByTagName(s)[0];if(!d.getElementById(id)){js=d.createElement(s);js.id=id;js.src="//platform.twitter.com/widgets.js";fjs.parentNode.insertBefore(js,fjs);}}(document,"script","twitter-wjs"); (function() { var po = document.createElement('script'); po.type = 'text/javascript'; po.async = true; po.src = 'https://apis.google.com/js/plusone.js'; var s = document.getElementsByTagName('script')[0]; s.parentNode.insertBefore(po, s); })();

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  • Quick 2D sight area calculation algorithm?

    - by Rogach
    I have a matrix of tiles, on some of that tiles there are objects. I want to calculate which tiles are visible to player, and which are not, and I need to do it quite efficiently (so it would compute fast enough even when I have a big matrices (100x100) and lots of objects). I tried to do it with Besenham's algorithm, but it was slow. Also, it gave me some errors: ----XXX- ----X**- ----XXX- -@------ -@------ -@------ ----XXX- ----X**- ----XXX- (raw version) (Besenham) (correct, since tunnel walls are still visible at distance) (@ is the player, X is obstacle, * is invisible, - is visible) I'm sure this can be done - after all, we have NetHack, Zangband, and they all dealt with this problem somehow :) What algorithm can you recommend for this? EDIT: Definition of visible (in my opinion): tile is visible when at least a part (e.g. corner) of the tile can be connected to center of player tile with a straight line which does not intersect any of obstacles.

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  • Ask How-To Geek: Clone a Disk, Resize Static Windows, and Create System Function Shortcuts

    - by Jason Fitzpatrick
    This week we take a look at how to clone a hard disk for easy backup or duplication, resize stubbornly static windows, and create shortcuts for dozens of Windows functions. Once a week we dip into our reader mailbag and help readers solve their problems, sharing the useful solutions with you in the process. Read on to see our fixes for this week’s reader dilemmas. Latest Features How-To Geek ETC HTG Projects: How to Create Your Own Custom Papercraft Toy How to Combine Rescue Disks to Create the Ultimate Windows Repair Disk What is Camera Raw, and Why Would a Professional Prefer it to JPG? The How-To Geek Guide to Audio Editing: The Basics How To Boot 10 Different Live CDs From 1 USB Flash Drive The 20 Best How-To Geek Linux Articles of 2010 ShapeShifter: What Are Dreams? [Video] This Computer Runs on Geek Power Wallpaper Bones, Clocks, and Counters; A Look at the First 35,000 Years of Computing Arctic Theme for Windows 7 Gives Your Desktop an Icy Touch Install LibreOffice via PPA and Receive Auto-Updates in Ubuntu Creative Portraits Peek Inside the Guts of Modern Electronics

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  • Copy HTML code but without javascript changes [closed]

    - by PaulP
    In Firebug there is very useful "Copy HTML" option in HTML Tab. But that copied HTML code also includes javascript changes like for example added new classes on document.ready (jQuery) event. I would like to copy raw HTML code like in "View source" option (it is every browser) without and javascript changes. Yes, I can use "View source" option but code in there is very scattered and it is very hard to copy one big HTML node not losing closing tag and in firebug with fold blessing I can match folded HTML node, right click and select "Copy HTML".

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  • BizTalk 2009 - The Scope of the Table Looping Functoid

    - by StuartBrierley
    When mapping in BizTalk you will find there are times when you need to map from flat and dispersed elemements in your source schema to a repeated record with child elements in your destination schema.  Below is an example of how you can make use of the Table Looping Functoid to bring together these flat elements and create your repeated group.  Although this example is purposely simple, I have previsouly encounted this issue on a much more complex scale when mapping the response from a credit scoring agency where all the applicant details were supplied in separate parts of a very flat schema. Consider the source and destination schemas as follows:   Although the Table Looping Functoid states that the first input must be a scoping element linked from a repeating group, you can actually also make use of a constant value.  In this case I know that the source schema always contains two people, so I set this to two. Then you need to set the number of columns in your table, in this case 2 (name and sex) and link all the required fields from the source schema. Following this you can configure the table. You can then add the Table Extractor functoids and complete the map. If you now validate this map you will see that BizTalk will warn you about the scoping link for the Table Looping Functoid, but this can be safely ignored. C:\Code\Developer Folders\Stuart Brierley\Test Mapping\TableLooping.btm: warning btm1071: A first input of the Table-Looping functoid must be a link from a Source Tree Node which acts as the scoping parameter. Testing the map will produce the following output:

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  • ASP.NET MVC 3 Release Candidate 2 Released

    - by shiju
    Microsoft has shipped Release Candidate version 2 for ASP.NET MVC 3. You can download the  ASP.NET MVC 3 Release Candidate 2 from here . If you have installed Visual Studio Service Pack 1 Beta, you must install ASP.NET MVC 3 RC 2. Otherwise it will break the IntelliSense feature in the Razor views of ASP.NET MVC 3 RC1. The following are the some of the new changes in ASP.NET MVC 3 RC 2. Added Html.Raw Method Renamed "Controller.ViewModel" Property and the "View" Property To "ViewBag" Renamed "ControllerSessionStateAttribute" Class to "SessionStateAttribute" Fixed "RenderAction" Method to Give Explicit Values Precedence During Model Binding You can read more details from ScottGu’s blog post Announcing ASP.NET MVC 3 (Release Candidate 2)

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  • Basic Spatial Data with SQL Server and Entity Framework 5.0

    - by Rick Strahl
    In my most recent project we needed to do a bit of geo-spatial referencing. While spatial features have been in SQL Server for a while using those features inside of .NET applications hasn't been as straight forward as could be, because .NET natively doesn't support spatial types. There are workarounds for this with a few custom project like SharpMap or a hack using the Sql Server specific Geo types found in the Microsoft.SqlTypes assembly that ships with SQL server. While these approaches work for manipulating spatial data from .NET code, they didn't work with database access if you're using Entity Framework. Other ORM vendors have been rolling their own versions of spatial integration. In Entity Framework 5.0 running on .NET 4.5 the Microsoft ORM finally adds support for spatial types as well. In this post I'll describe basic geography features that deal with single location and distance calculations which is probably the most common usage scenario. SQL Server Transact-SQL Syntax for Spatial Data Before we look at how things work with Entity framework, lets take a look at how SQL Server allows you to use spatial data to get an understanding of the underlying semantics. The following SQL examples should work with SQL 2008 and forward. Let's start by creating a test table that includes a Geography field and also a pair of Long/Lat fields that demonstrate how you can work with the geography functions even if you don't have geography/geometry fields in the database. Here's the CREATE command:CREATE TABLE [dbo].[Geo]( [id] [int] IDENTITY(1,1) NOT NULL, [Location] [geography] NULL, [Long] [float] NOT NULL, [Lat] [float] NOT NULL ) Now using plain SQL you can insert data into the table using geography::STGeoFromText SQL CLR function:insert into Geo( Location , long, lat ) values ( geography::STGeomFromText ('POINT(-121.527200 45.712113)', 4326), -121.527200, 45.712113 ) insert into Geo( Location , long, lat ) values ( geography::STGeomFromText ('POINT(-121.517265 45.714240)', 4326), -121.517265, 45.714240 ) insert into Geo( Location , long, lat ) values ( geography::STGeomFromText ('POINT(-121.511536 45.714825)', 4326), -121.511536, 45.714825) The STGeomFromText function accepts a string that points to a geometric item (a point here but can also be a line or path or polygon and many others). You also need to provide an SRID (Spatial Reference System Identifier) which is an integer value that determines the rules for how geography/geometry values are calculated and returned. For mapping/distance functionality you typically want to use 4326 as this is the format used by most mapping software and geo-location libraries like Google and Bing. The spatial data in the Location field is stored in binary format which looks something like this: Once the location data is in the database you can query the data and do simple distance computations very easily. For example to calculate the distance of each of the values in the database to another spatial point is very easy to calculate. Distance calculations compare two points in space using a direct line calculation. For our example I'll compare a new point to all the points in the database. Using the Location field the SQL looks like this:-- create a source point DECLARE @s geography SET @s = geography:: STGeomFromText('POINT(-121.527200 45.712113)' , 4326); --- return the ids select ID, Location as Geo , Location .ToString() as Point , @s.STDistance( Location) as distance from Geo order by distance The code defines a new point which is the base point to compare each of the values to. You can also compare values from the database directly, but typically you'll want to match a location to another location and determine the difference for which you can use the geography::STDistance function. This query produces the following output: The STDistance function returns the straight line distance between the passed in point and the point in the database field. The result for SRID 4326 is always in meters. Notice that the first value passed was the same point so the difference is 0. The other two points are two points here in town in Hood River a little ways away - 808 and 1256 meters respectively. Notice also that you can order the result by the resulting distance, which effectively gives you results that are ordered radially out from closer to further away. This is great for searches of points of interest near a central location (YOU typically!). These geolocation functions are also available to you if you don't use the Geography/Geometry types, but plain float values. It's a little more work, as each point has to be created in the query using the string syntax, but the following code doesn't use a geography field but produces the same result as the previous query.--- using float fields select ID, geography::STGeomFromText ('POINT(' + STR (long, 15,7 ) + ' ' + Str(lat ,15, 7) + ')' , 4326), geography::STGeomFromText ('POINT(' + STR (long, 15,7 ) + ' ' + Str(lat ,15, 7) + ')' , 4326). ToString(), @s.STDistance( geography::STGeomFromText ('POINT(' + STR(long ,15, 7) + ' ' + Str(lat ,15, 7) + ')' , 4326)) as distance from geo order by distance Spatial Data in the Entity Framework Prior to Entity Framework 5.0 on .NET 4.5 consuming of the data above required using stored procedures or raw SQL commands to access the spatial data. In Entity Framework 5 however, Microsoft introduced the new DbGeometry and DbGeography types. These immutable location types provide a bunch of functionality for manipulating spatial points using geometry functions which in turn can be used to do common spatial queries like I described in the SQL syntax above. The DbGeography/DbGeometry types are immutable, meaning that you can't write to them once they've been created. They are a bit odd in that you need to use factory methods in order to instantiate them - they have no constructor() and you can't assign to properties like Latitude and Longitude. Creating a Model with Spatial Data Let's start by creating a simple Entity Framework model that includes a Location property of type DbGeography: public class GeoLocationContext : DbContext { public DbSet<GeoLocation> Locations { get; set; } } public class GeoLocation { public int Id { get; set; } public DbGeography Location { get; set; } public string Address { get; set; } } That's all there's to it. When you run this now against SQL Server, you get a Geography field for the Location property, which looks the same as the Location field in the SQL examples earlier. Adding Spatial Data to the Database Next let's add some data to the table that includes some latitude and longitude data. An easy way to find lat/long locations is to use Google Maps to pinpoint your location, then right click and click on What's Here. Click on the green marker to get the GPS coordinates. To add the actual geolocation data create an instance of the GeoLocation type and use the DbGeography.PointFromText() factory method to create a new point to assign to the Location property:[TestMethod] public void AddLocationsToDataBase() { var context = new GeoLocationContext(); // remove all context.Locations.ToList().ForEach( loc => context.Locations.Remove(loc)); context.SaveChanges(); var location = new GeoLocation() { // Create a point using native DbGeography Factory method Location = DbGeography.PointFromText( string.Format("POINT({0} {1})", -121.527200,45.712113) ,4326), Address = "301 15th Street, Hood River" }; context.Locations.Add(location); location = new GeoLocation() { Location = CreatePoint(45.714240, -121.517265), Address = "The Hatchery, Bingen" }; context.Locations.Add(location); location = new GeoLocation() { // Create a point using a helper function (lat/long) Location = CreatePoint(45.708457, -121.514432), Address = "Kaze Sushi, Hood River" }; context.Locations.Add(location); location = new GeoLocation() { Location = CreatePoint(45.722780, -120.209227), Address = "Arlington, OR" }; context.Locations.Add(location); context.SaveChanges(); } As promised, a DbGeography object has to be created with one of the static factory methods provided on the type as the Location.Longitude and Location.Latitude properties are read only. Here I'm using PointFromText() which uses a "Well Known Text" format to specify spatial data. In the first example I'm specifying to create a Point from a longitude and latitude value, using an SRID of 4326 (just like earlier in the SQL examples). You'll probably want to create a helper method to make the creation of Points easier to avoid that string format and instead just pass in a couple of double values. Here's my helper called CreatePoint that's used for all but the first point creation in the sample above:public static DbGeography CreatePoint(double latitude, double longitude) { var text = string.Format(CultureInfo.InvariantCulture.NumberFormat, "POINT({0} {1})", longitude, latitude); // 4326 is most common coordinate system used by GPS/Maps return DbGeography.PointFromText(text, 4326); } Using the helper the syntax becomes a bit cleaner, requiring only a latitude and longitude respectively. Note that my method intentionally swaps the parameters around because Latitude and Longitude is the common format I've seen with mapping libraries (especially Google Mapping/Geolocation APIs with their LatLng type). When the context is changed the data is written into the database using the SQL Geography type which looks the same as in the earlier SQL examples shown. Querying Once you have some location data in the database it's now super easy to query the data and find out the distance between locations. A common query is to ask for a number of locations that are near a fixed point - typically your current location and order it by distance. Using LINQ to Entities a query like this is easy to construct:[TestMethod] public void QueryLocationsTest() { var sourcePoint = CreatePoint(45.712113, -121.527200); var context = new GeoLocationContext(); // find any locations within 5 kilometers ordered by distance var matches = context.Locations .Where(loc => loc.Location.Distance(sourcePoint) < 5000) .OrderBy( loc=> loc.Location.Distance(sourcePoint) ) .Select( loc=> new { Address = loc.Address, Distance = loc.Location.Distance(sourcePoint) }); Assert.IsTrue(matches.Count() > 0); foreach (var location in matches) { Console.WriteLine("{0} ({1:n0} meters)", location.Address, location.Distance); } } This example produces: 301 15th Street, Hood River (0 meters)The Hatchery, Bingen (809 meters)Kaze Sushi, Hood River (1,074 meters)   The first point in the database is the same as my source point I'm comparing against so the distance is 0. The other two are within the 5 mile radius, while the Arlington location which is 65 miles or so out is not returned. The result is ordered by distance from closest to furthest away. In the code, I first create a source point that is the basis for comparison. The LINQ query then selects all locations that are within 5km of the source point using the Location.Distance() function, which takes a source point as a parameter. You can either use a pre-defined value as I'm doing here, or compare against another database DbGeography property (say when you have to points in the same database for things like routes). What's nice about this query syntax is that it's very clean and easy to read and understand. You can calculate the distance and also easily order by the distance to provide a result that shows locations from closest to furthest away which is a common scenario for any application that places a user in the context of several locations. It's now super easy to accomplish this. Meters vs. Miles As with the SQL Server functions, the Distance() method returns data in meters, so if you need to work with miles or feet you need to do some conversion. Here are a couple of helpers that might be useful (can be found in GeoUtils.cs of the sample project):/// <summary> /// Convert meters to miles /// </summary> /// <param name="meters"></param> /// <returns></returns> public static double MetersToMiles(double? meters) { if (meters == null) return 0F; return meters.Value * 0.000621371192; } /// <summary> /// Convert miles to meters /// </summary> /// <param name="miles"></param> /// <returns></returns> public static double MilesToMeters(double? miles) { if (miles == null) return 0; return miles.Value * 1609.344; } Using these two helpers you can query on miles like this:[TestMethod] public void QueryLocationsMilesTest() { var sourcePoint = CreatePoint(45.712113, -121.527200); var context = new GeoLocationContext(); // find any locations within 5 miles ordered by distance var fiveMiles = GeoUtils.MilesToMeters(5); var matches = context.Locations .Where(loc => loc.Location.Distance(sourcePoint) <= fiveMiles) .OrderBy(loc => loc.Location.Distance(sourcePoint)) .Select(loc => new { Address = loc.Address, Distance = loc.Location.Distance(sourcePoint) }); Assert.IsTrue(matches.Count() > 0); foreach (var location in matches) { Console.WriteLine("{0} ({1:n1} miles)", location.Address, GeoUtils.MetersToMiles(location.Distance)); } } which produces: 301 15th Street, Hood River (0.0 miles)The Hatchery, Bingen (0.5 miles)Kaze Sushi, Hood River (0.7 miles) Nice 'n simple. .NET 4.5 Only Note that DbGeography and DbGeometry are exclusive to Entity Framework 5.0 (not 4.4 which ships in the same NuGet package or installer) and requires .NET 4.5. That's because the new DbGeometry and DbGeography (and related) types are defined in the 4.5 version of System.Data.Entity which is a CLR assembly and is only updated by major versions of .NET. Why this decision was made to add these types to System.Data.Entity rather than to the frequently updated EntityFramework assembly that would have possibly made this work in .NET 4.0 is beyond me, especially given that there are no native .NET framework spatial types to begin with. I find it also odd that there is no native CLR spatial type. The DbGeography and DbGeometry types are specific to Entity Framework and live on those assemblies. They will also work for general purpose, non-database spatial data manipulation, but then you are forced into having a dependency on System.Data.Entity, which seems a bit silly. There's also a System.Spatial assembly that's apparently part of WCF Data Services which in turn don't work with Entity framework. Another example of multiple teams at Microsoft not communicating and implementing the same functionality (differently) in several different places. Perplexed as a I may be, for EF specific code the Entity framework specific types are easy to use and work well. Working with pre-.NET 4.5 Entity Framework and Spatial Data If you can't go to .NET 4.5 just yet you can also still use spatial features in Entity Framework, but it's a lot more work as you can't use the DbContext directly to manipulate the location data. You can still run raw SQL statements to write data into the database and retrieve results using the same TSQL syntax I showed earlier using Context.Database.ExecuteSqlCommand(). Here's code that you can use to add location data into the database:[TestMethod] public void RawSqlEfAddTest() { string sqlFormat = @"insert into GeoLocations( Location, Address) values ( geography::STGeomFromText('POINT({0} {1})', 4326),@p0 )"; var sql = string.Format(sqlFormat,-121.527200, 45.712113); Console.WriteLine(sql); var context = new GeoLocationContext(); Assert.IsTrue(context.Database.ExecuteSqlCommand(sql,"301 N. 15th Street") > 0); } Here I'm using the STGeomFromText() function to add the location data. Note that I'm using string.Format here, which usually would be a bad practice but is required here. I was unable to use ExecuteSqlCommand() and its named parameter syntax as the longitude and latitude parameters are embedded into a string. Rest assured it's required as the following does not work:string sqlFormat = @"insert into GeoLocations( Location, Address) values ( geography::STGeomFromText('POINT(@p0 @p1)', 4326),@p2 )";context.Database.ExecuteSqlCommand(sql, -121.527200, 45.712113, "301 N. 15th Street") Explicitly assigning the point value with string.format works however. There are a number of ways to query location data. You can't get the location data directly, but you can retrieve the point string (which can then be parsed to get Latitude and Longitude) and you can return calculated values like distance. Here's an example of how to retrieve some geo data into a resultset using EF's and SqlQuery method:[TestMethod] public void RawSqlEfQueryTest() { var sqlFormat = @" DECLARE @s geography SET @s = geography:: STGeomFromText('POINT({0} {1})' , 4326); SELECT Address, Location.ToString() as GeoString, @s.STDistance( Location) as Distance FROM GeoLocations ORDER BY Distance"; var sql = string.Format(sqlFormat, -121.527200, 45.712113); var context = new GeoLocationContext(); var locations = context.Database.SqlQuery<ResultData>(sql); Assert.IsTrue(locations.Count() > 0); foreach (var location in locations) { Console.WriteLine(location.Address + " " + location.GeoString + " " + location.Distance); } } public class ResultData { public string GeoString { get; set; } public double Distance { get; set; } public string Address { get; set; } } Hopefully you don't have to resort to this approach as it's fairly limited. Using the new DbGeography/DbGeometry types makes this sort of thing so much easier. When I had to use code like this before I typically ended up retrieving data pks only and then running another query with just the PKs to retrieve the actual underlying DbContext entities. This was very inefficient and tedious but it did work. Summary For the current project I'm working on we actually made the switch to .NET 4.5 purely for the spatial features in EF 5.0. This app heavily relies on spatial queries and it was worth taking a chance with pre-release code to get this ease of integration as opposed to manually falling back to stored procedures or raw SQL string queries to return spatial specific queries. Using native Entity Framework code makes life a lot easier than the alternatives. It might be a late addition to Entity Framework, but it sure makes location calculations and storage easy. Where do you want to go today? ;-) Resources Download Sample Project© Rick Strahl, West Wind Technologies, 2005-2012Posted in ADO.NET  Sql Server  .NET   Tweet !function(d,s,id){var js,fjs=d.getElementsByTagName(s)[0];if(!d.getElementById(id)){js=d.createElement(s);js.id=id;js.src="//platform.twitter.com/widgets.js";fjs.parentNode.insertBefore(js,fjs);}}(document,"script","twitter-wjs"); (function() { var po = document.createElement('script'); po.type = 'text/javascript'; po.async = true; po.src = 'https://apis.google.com/js/plusone.js'; var s = document.getElementsByTagName('script')[0]; s.parentNode.insertBefore(po, s); })();

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  • Function keys for ASUS n56vm not working

    - by Lars
    i have installed Ubuntu 12.10 (64bits) (3.5.0-18 kernel) on an ASUS N56VM. Most fn+key are working except for: brightness keys (fn+f5/fn+f6) don't work. fn+c - gamma keys fc+v - camera fn+space - toggle speed. I really like, at least, to have the brightness keys working. Can you help? Best Regards $ dmesg | grep -i asus [ 0.000000] DMI: ASUSTeK COMPUTER INC. N56VM/N56VM, BIOS N56VM.206 04/13/2012 [ 0.000000] ACPI: RSDP 00000000cafcc000 00024 (v02 _ASUS_) [ 0.000000] ACPI: XSDT 00000000cafcc078 00074 (v01 _ASUS_ Notebook 01072009 AMI 00010013) [ 0.000000] ACPI: FACP 00000000cafdf858 000F4 (v04 _ASUS_ Notebook 01072009 AMI 00010013) [ 0.000000] ACPI: DSDT 00000000cafcc188 136CA (v02 _ASUS_ Notebook 00000013 INTL 20091112) [ 0.000000] ACPI: APIC 00000000cafdf950 00092 (v03 _ASUS_ Notebook 01072009 AMI 00010013) [ 0.000000] ACPI: FPDT 00000000cafdf9e8 00044 (v01 _ASUS_ Notebook 01072009 AMI 00010013) [ 0.000000] ACPI: ECDT 00000000cafdfa30 000C1 (v01 _ASUS_ Notebook 01072009 AMI. 00000005) [ 0.000000] ACPI: MCFG 00000000cafdfaf8 0003C (v01 _ASUS_ Notebook 01072009 MSFT 00000097) [ 0.000000] ACPI: SLIC 00000000cafdfb38 00176 (v01 _ASUS_ Notebook 01072009 ASUS 00000001) [ 0.000000] ACPI: HPET 00000000cafdfcb0 00038 (v01 _ASUS_ Notebook 01072009 AMI. 00000005) [ 0.000000] ACPI: BGRT 00000000cafe1090 00038 (v00 _ASUS_ Notebook 01072009 ASUS 00010013) [ 9.670500] asus_wmi: ASUS WMI generic driver loaded [ 9.671627] asus_wmi: Initialization: 0x1asus_wmi: BIOS WMI version: 7.9 [ 9.671673] asus_wmi: SFUN value: 0x6a0877<6>[ 9.672086] input: Asus WMI hotkeys as /devices/platform/asus-nb-wmi/input/input4 [ 9.732438] Registered led device: asus::kbd_backlight [ 9.733242] asus_wmi: Backlight controlled by ACPI video driver

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  • This Week In Geek History: Steve Jobs Demos the First Mac, Mythbusters Hits the Airwaves, and Dr. Strangelove Invades Popular Culture

    - by Jason Fitzpatrick
    It was quite a wild ride for this week in Geek History: Steve Jobs gave a demonstration of the first Macintosh computer, beloved geek show MythBusters took to the air, and iconic movie Dr. Strangelove appeared in theatres and our collective consciousness. Latest Features How-To Geek ETC How To Create Your Own Custom ASCII Art from Any Image How To Process Camera Raw Without Paying for Adobe Photoshop How Do You Block Annoying Text Message (SMS) Spam? How to Use and Master the Notoriously Difficult Pen Tool in Photoshop HTG Explains: What Are the Differences Between All Those Audio Formats? How To Use Layer Masks and Vector Masks to Remove Complex Backgrounds in Photoshop Bring Summer Back to Your Desktop with the LandscapeTheme for Chrome and Iron The Prospector – Home Dash Extension Creates a Whole New Browsing Experience in Firefox KinEmote Links Kinect to Windows Why Nobody Reads Web Site Privacy Policies [Infographic] Asian Temple in the Snow Wallpaper 10 Weird Gaming Records from the Guinness Book

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  • MS Office 2013 and Asian languages

    - by atamur
    I've got a Win7 computer with Office 2013 installed. System language is German. When switching input language to Thai I can type in the system dialog boxes (like start buttno app finder), but can't type in MS Word (pressing the keys on the keyboard does nothing on the screen, the cursor doesn't move). The weirdest thing here is: if I use numeric keypad and type any number after that the keyboard starts working in Word for a few characters. Japanese and Nepal input languages work fine. Does anyone know any way to troubleshoot? Thank you!

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  • Desktop Fun: Valentine’s Day Icon Packs

    - by Asian Angel
    Are you looking forward to Valentine’s Day? Then we have the perfect way for you to start customizing your desktop for the holiday with our Valentine’s Day Icon Packs collection Latest Features How-To Geek ETC How To Colorize Black and White Vintage Photographs in Photoshop How To Get SSH Command-Line Access to Windows 7 Using Cygwin The How-To Geek Video Guide to Using Windows 7 Speech Recognition How To Create Your Own Custom ASCII Art from Any Image How To Process Camera Raw Without Paying for Adobe Photoshop How Do You Block Annoying Text Message (SMS) Spam? Change Your MAC Address to Avoid Free Internet Restrictions Battlestar Galactica – Caprica Map of the 12 Colonies (Wallpaper Also Available) View Enlarged Versions of Thumbnail Images with Thumbnail Zoom for Firefox IntoNow Identifies Any TV Show by Sound Walk Score Calculates a Neighborhood’s Pedestrian Friendliness Factor Fantasy World at Twilight Wallpaper

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  • Desktop Fun: Dreams of Hawaii Wallpaper Collection

    - by Asian Angel
    Is the winter weather wearing you down and making you wish for a tropical vacation? Until summer and vacation time gets here let our Dreams of Hawaii Wallpaper collection help you think warm and happy thoughts Latest Features How-To Geek ETC How To Create Your Own Custom ASCII Art from Any Image How To Process Camera Raw Without Paying for Adobe Photoshop How Do You Block Annoying Text Message (SMS) Spam? How to Use and Master the Notoriously Difficult Pen Tool in Photoshop HTG Explains: What Are the Differences Between All Those Audio Formats? How To Use Layer Masks and Vector Masks to Remove Complex Backgrounds in Photoshop Enjoy Clutter-Free YouTube Video Viewing in Opera with CleanTube Bring Summer Back to Your Desktop with the LandscapeTheme for Chrome and Iron The Prospector – Home Dash Extension Creates a Whole New Browsing Experience in Firefox KinEmote Links Kinect to Windows Why Nobody Reads Web Site Privacy Policies [Infographic] Asian Temple in the Snow Wallpaper

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  • MD5 implementation notes

    - by vaasu
    While going through RFC1321, I came across the following paragraph: This step uses a 64-element table T[1 ... 64] constructed from the sine function. Let T[i] denote the i-th element of the table, which is equal to the integer part of 4294967296 times abs(sin(i)), where i is in radians. The elements of the table are given in the appendix. From what I understood from paragraph, it means T[i] = Integer_part(4294967296 times abs(sin(i))) We know the following is true for all x: 0 <= sin(x) <= 1 Since i is an integer, abs(sin(i)) may very well be 0 for all values of i. That means table will contain all zero values ( 4294967296 times 0 is 0). In the implementation, this is not true. Why is this so? Appendix contains just the raw values after calculation. It does not show how it is derived from the sine function.

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  • Fix: WCF - The type provided as the Service attribute value in the ServiceHost directive could not

    - by Ken Cox [MVP]
    I wanted to expose some raw data to users in my current ASP.NET 3.5 web site project. I created a subdirectory called ‘datafeeds’ and added a WCF Data Service. I wired the dataservice up to the Entity Framework class and, on running the ItemDataService.svc file, was greeted with: The type  <> provided as the Service attribute value in the ServiceHost directive could not be found So why couldn’t it find the class? It was right there in the… oops! Instead of putting the ItemDataService.vb...(read more)

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