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  • Java Spotlight Episode 99: Daniel Blaukopf on JavaFX for Embedded Systems

    - by Roger Brinkley
    Interview with  Daniel Blaukopf on JavaFX for Embedded Systems Right-click or Control-click to download this MP3 file. You can also subscribe to the Java Spotlight Podcast Feed to get the latest podcast automatically. If you use iTunes you can open iTunes and subscribe with this link:  Java Spotlight Podcast in iTunes. Show Notes News Top 5 Reasons to go to JavaOne 5. Chance to see the future of Java Technical Keynotes and sessions The pavillion The new Embedded@JavaOne conference 4. The meetings outside the scope of the conference Top 10 Reasons to Attend the Oracle Appreciation Event GlassFish Community Event at JavaOne 2012 Sundays User Group Forum 3. It’s like drinking from firehose Less keynotes more sessions - 20% more 60% of the talks are external to HOLs Tutorials OracleJava University classes on Sunday - Top Five Reasons You Should Attend Java University at JavaOne 2. Students are free 1. It’s not what you see it’s who you will meet Events Sep 10-15, IMTS 2012 Conference,  Chicago Sep 12,  The Coming M2M Revolution: Critical Issues for End-to-End Software and Systems Development,  Webinar Sep 30-Oct 4, JavaONE, San Francisco Oct 3-4, Java Embedded @ JavaONE, San Francisco Oct 15-17, JAX London Oct 30-Nov 1, Arm TechCon, Santa Clara Oct 22-23, Freescale Technology Forum - Japan, Tokyo Oct 31, JFall, Netherlands Nov 2-3, JMagreb, Morocco Nov 13-17, Devoxx, Belgium Feature InterviewDaniel Blaukopf is the Embedded Java Client Architect at Oracle, working on JavaFX. Daniel's focus in his 14 years in the Java organization has been mobile and embedded devices, including working with device manufacturers to port and tune all levels of the Java stack to their hardware and software environments. Daniel's particular interests are: graphics, performance optimization and functional programming.

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  • Will You Accept This Rose?

    - by user715249
    Normal 0 false false false EN-US X-NONE X-NONE MicrosoftInternetExplorer4 /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Table Normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-priority:99; mso-style-qformat:yes; mso-style-parent:""; mso-padding-alt:0in 5.4pt 0in 5.4pt; mso-para-margin-top:0in; mso-para-margin-right:0in; mso-para-margin-bottom:10.0pt; mso-para-margin-left:0in; line-height:115%; mso-pagination:widow-orphan; font-size:11.0pt; font-family:"Calibri","sans-serif"; mso-ascii-font-family:Calibri; mso-ascii-theme-font:minor-latin; mso-hansi-font-family:Calibri; mso-hansi-theme-font:minor-latin;} Ashley, Bentley and the Masked Man. If these names mean anything to you we know where you’ll be on Monday night – planted in front of your television awaiting the villain’s return and what is sure to be the most dramatic rose ceremony yet on the Bachelorette.  If you’re the Oracle PartnerNetwork Communications Team you’ll be spending your Monday night putting the final touches on the most exciting Partner Kickoff Event yet.  Listen in as Judson tells you more. Starting at 6:00 AM PT on Tuesday, June 29th partners – and potential partners – can tune in to watch the excitement unfold at partner.oracle.com.  The storyline for FY12 will continue to unfold with a special role being outlined for our ISV partners.  SPOILER ALERT: OPN has made an investment in how we’ll go to market together – trust us - you don’t want to get this news from the highlight reel. While we won’t be sending anyone home from the show, we do promise an exciting hour which will gear you up to go to market with Oracle in the new fiscal year.  The Oracle PartnerNetwork FY12 Kickoff is being held live 5 times and will include a ‘date card’ message for each region. EMEA Kickoff - Tuesday, June 29, at 6 a.m. PT / 2 p.m. BT LAD Kickoff – Tuesday, June 29, at 8 a.m. PT / noon DT North America Kickoff – Tuesday, June 29, at 10 a.m. PT / 1 p.m. ET Japan Kickoff – Tuesday, June 29, at 6 p.m. PT / Wednesday, June 30, at 10 a.m. JT (Tokyo) APAC Kickoff– Tuesday, June 29, at 8 p.m. PT / Wednesday, June 30, at 11 a.m. SGT (Singapore) / 1 p.m. AET (Sydney) We’ll be taking your questions live throughout the show – we hope you’ll “accept our rose” and join us on this amazing journey. The OPN Communications Team

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  • Le C en 20 heures d'Eric Berthomier et Daniel Schang

    Nous avons le plaisir de vous présenter le livre "Le C en 20 heures" d'Eric Berthomier et Daniel Schang à consulter ou à télécharger gratuitement. Citation: L'ouvrage que vous tenez dans les mains ou que vous consultez sur votre écran a pour objectif de vous faire découvrir, par la pratique, la programmation en langage C. Il a été testé par de nombreux étudiants qui n'avaient aucune connaissance préalable de ce langage. En 20 à 30 heures de ...

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  • Critical Patch Update For Oracle Fusion Middleware – CPU October 2012 by Daniel Mortimer

    - by JuergenKress
    The latest Critical Patch Update (CPU) has been released for Oracle products. Start your reading here. Patch Set Update and Critical Patch Update October 2012 Availability Document [ID 1477727.1] Oracle Fusion Middleware 11g Release 2 11.1.2.0 Oracle Fusion Middleware 11g Release 1 11.1.1.4 (Portal,Forms,Reports and Discoverer) 11.1.1.5 11.1.1.6 Oracle Application Server 10g Release 3 10.1.3.5 Read the full article here. WebLogic Partner Community For regular information become a member in the WebLogic Partner Community please visit: http://www.oracle.com/partners/goto/wls-emea ( OPN account required). If you need support with your account please contact the Oracle Partner Business Center. BlogTwitterLinkedInMixForumWiki Technorati Tags: patch ofm,critical patch,WebLogic Community,Oracle,OPN,Jürgen Kress

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  • A Rose by Any Other Name..

    - by Geoff N. Hiten
    It is always a good start when you can steal a title line from one of the best writers in the English language.  Let’s hope I can make the rest of this post live up to the opening.  One recurring problem with SQL server is moving databases to new servers.  Client applications use a variety of ways to resolve SQL Server names, some of which are not changed easily <cough SharePoint /cough>.  If you happen to be using default instances on both the source and target SQL Server, then the solution is pretty simple.  You create (or bug the network admin until she creates) two DNS “A” records. One points the old name to the new IP address.  The other creates a new alias for the old server, since the original system name is now redirected.  Note this will redirect ALL traffic from the old server to the new server, including RDP and file share connection attempts.    Figure 1 – Microsoft DNS MMC Snap-In   Figure 2 – DNS New Host Dialog Box Both records are necessary so you can still access the old server via an alternate name. Server Role IP Address Name Alias Source 10.97.230.60 SQL01 SQL01_Old Target 10.97.230.80 SQL02 SQL01 Table 1 – Alias List If you or somebody set up connections via IP address, you deserve to have to go to each app and fix it by hand.  That is the only way to fix that particular foul-up. If have to deal with Named Instances either as a source or a target, then it gets more complicated.  The standard fix is to use the SQL Server Configuration Manager (or one of its earlier incarnations) to create a SQL client alias to redirect the connection.  This can be a pain installing and configuring the app on multiple client servers.  The good news is that SQL Server Configuration Manager AND all of its earlier versions simply write a few registry keys.  Extracting the keys into a .reg file makes centralized automated deployment a snap. If the client is a 32-bit system, you have to extract the native key.  If it is a 64-bit, you have to extract the native key and the WoW (32 bit on 64 bit host) key. First, pick a development system to create the actual registry key.  If you do this repeatedly, you can simply edit an existing registry file.  Create the entry using the SQL Configuration Manager.  You must use a 64-bit system to create the WoW key.  The following example redirects from a named instance “SQL01\SQLUtiluty” to a default instance on “SQL02”.   Figure 3 – SQL Server Configuration Manager - Native Figure 3 shows the native key listing. Figure 4 – SQL Server Configuration Manager – WoW If you think you don’t need the WoW key because your app is 64 it, think again.  SQL Server Management Server is a 32-bit app, as are most SQL test utilities.  Always create both keys for 64-bit target systems. Now that the keys exist, we can extract them into a .reg file. Fire up REGEDIT and browse to the following location:  HKLM\Software\Microsoft\MSSQLServer\Client\ConnectTo.  You can also search the registry for the string value of one of the server names (old or new). Right click on the “ConnectTo” label and choose “Export”.  Save with an appropriate name and location.  The resulting file should look something like this: Figure 5 – SQL01_Alias.reg Repeat the process with the location: HKLM\Software\Wow6432Node\Microsoft\MSSQLServer\Client\ConnectTo Note that if you have multiple alias entries, ALL of the entries will be exported.  In that case, you can edit the file and remove the extra aliases. You can edit the files together into a single file.  Just leave a blank line between new keys like this: Figure 6 – SQL01_Alias_All.reg Of course if you have an automatic way to deploy, it makes sense to have an automatic way to Un-deploy.  To delete a registry key, simply edit the .reg file and replace the target with a “-“ sign like so. Figure 7 – SQL01_Alias_UNDO.reg Now we have the ability to move any database to any server without having to install or change any applications on any client server.  The whole process should be transparent to the applications, which makes planning and coordinating database moves a far simpler task.

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  • F# and the rose-tinted reflection

    - by CliveT
    We're already seeing increasing use of many cores on client desktops. It is a change that has been long predicted. It is not just a change in architecture, but our notions of efficiency in a program. No longer can we focus on the asymptotic complexity of an algorithm by counting the steps that a single core processor would take to execute it. Instead we'll soon be more concerned about the scalability of the algorithm and how well we can increase the performance as we increase the number of cores. This may even lead us to throw away our most efficient algorithms, and switch to less efficient algorithms that scale better. We might even be willing to waste cycles in order to speculatively execute at the algorithm rather than the hardware level. State is the big headache in this parallel world. At the hardware level, main memory doesn't necessarily contain the definitive value corresponding to a particular address. An update to a location might still be held in a CPU's local cache and it might be some time before the value gets propagated. To get the latest value, and the notion of "latest" takes a lot of defining in this world of rapidly mutating state, the CPUs may well need to communicate to decide who has the definitive value of a particular address in order to avoid lost updates. At the user program level, this means programmers will need to lock objects before modifying them, or attempt to avoid the overhead of locking by understanding the memory models at a very deep level. I think it's this need to avoid statefulness that has led to the recent resurgence of interest in functional languages. In the 1980s, functional languages started getting traction when research was carried out into how programs in such languages could be auto-parallelised. Sadly, the impracticality of some of the languages, the overheads of communication during this parallel execution, and rapid improvements in compiler technology on stock hardware meant that the functional languages fell by the wayside. The one thing that these languages were good at was getting rid of implicit state, and this single idea seems like a solution to the problems we are going to face in the coming years. Whether these languages will catch on is hard to predict. The mindset for writing a program in a functional language is really very different from the way that object-oriented problem decomposition happens - one has to focus on the verbs instead of the nouns, which takes some getting used to. There are a number of hybrid functional/object languages that have been becoming more popular in recent times. These half-way houses make it easy to use functional ideas for some parts of the program while still allowing access to the underlying object-focused platform without a great deal of impedance mismatch. One example is F# running on the CLR which, in Visual Studio 2010, has because a first class member of the pack. Inside Visual Studio 2010, the tooling for F# has improved to the point where it is easy to set breakpoints and watch values change while debugging at the source level. In my opinion, it is the tooling support that will enable the widespread adoption of functional languages - without this support, people will put off any transition into the functional world for as long as they possibly can. Without tool support it will make it hard to learn these languages. One tool that doesn't currently support F# is Reflector. The idea of decompiling IL to a functional language is daunting, but F# is potentially so important I couldn't dismiss the idea. As I'm currently developing Reflector 6.5, I thought it wise to take four days just to see how far I could get in doing so, even if it achieved little more than to be clearer on how much was possible, and how long it might take. You can read what happened here, and of the insights it gave us on ways to improve the tool.

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  • Changing font size of legend title in Python pylab rose/polar plot

    - by LaurieW
    I'm trying to change the font size of the title of an existing legend on a rose, or 'polar', plot. Most of the code was written by somebody else, who is away. I've added:- ax.legend(title=legend_title) setp(l.get_title(), fontsize=8) to add the title 'legend_title', which is a variable that the user enters a string for in a a different function that uses this code. The second line of this doesn't return an error but doesn't appear to do anything either. The complete code is below. 'Rose' and 'RoseAxes' are modules/functions written by somebody. Does anyone know of a way to change the legend title font size? I've found some examples for normal plots but can't find any for rose/polar plots. from Rose.RoseAxes import RoseAxes from pylab import figure, title, setp, close, clf from PlotGeneration import color_map_xml fig = figure(1) rect = [0.02, 0.1, 0.8, 0.8] ax = RoseAxes(fig, rect, axisbg='w') fig.add_axes(ax) if cmap == None: (XMLcmap,colors) = color_map_xml.get_cmap('D:/HRW/VET/HrwPyLibs/ColorMapLibrary/paired.xml',255) else: XMLcmap = cmap bqs = kwargs.pop('CTfigname', None) ax.box(Dir, U, bins = rose_binX, units = unit, nsector = nsector, cmap = XMLcmap, lw = 0, **kwargs ) l = ax.legend() ax.legend(title=legend_title) setp(l.get_texts(), fontsize=8) setp(l.get_title(), fontsize=8) Thanks for any help

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  • how to create a wind rose in excel 2007

    - by Patrick
    I am attempting to create a wind rose graph (i.e.- here or here). My data is wind speed and cardinal wind direction in separate columns: Wind (mph) Wind Direction 3.66 SE 2.69 SE 2.62 SW 2.76 SW 2.11 NW 3.13 NW 3.55 SW 3.62 W My final goal is to actually create the graph with a VBA macro, but I am unsure how to even create the graph manually. I can, if need be, convert the cardinal directions to degrees. Any help is greatly appreciated

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  • Errors rose when a Netbean Maven Project tries to run

    - by Zakaria
    Hi everybody, I installed NetBeans 6.8 on Vista and and I'm trying to execute a simple Maven Project. When I ran the project, I got this set of errors: WARNING: You are running embedded Maven builds, some build may fail due to incompatibilities with latest Maven release. To set Maven instance to use for building, click here. Scanning for projects... [#process-resources] [resources:resources] Using default encoding to copy filtered resources. [#compile] [compiler:compile] Nothing to compile - all classes are up to date [exec:exec] [EL Info]: 2010-04-04 18:22:54.907--ServerSession(15532856)--EclipseLink, version: Eclipse Persistence Services - 2.0.0.v20091127-r5931 [EL Severe]: 2010-04-04 18:22:54.929--ServerSession(15532856)--Local Exception Stack: Exception [EclipseLink-4003] (Eclipse Persistence Services - 2.0.0.v20091127-r5931): org.eclipse.persistence.exceptions.DatabaseException Exception in thread "main" javax.persistence.PersistenceException: Exception [EclipseLink-4003] (Eclipse Persistence Services - 2.0.0.v20091127-r5931): org.eclipse.persistence.exceptions.DatabaseException Exception Description: Configuration error. Class [org.apache.derby.jdbc.ClientDriver] not found. Exception Description: Configuration error. Class [org.apache.derby.jdbc.ClientDriver] not found. at org.eclipse.persistence.exceptions.DatabaseException.configurationErrorClassNotFound(DatabaseException.java:82) at org.eclipse.persistence.sessions.DefaultConnector.loadDriverClass(DefaultConnector.java:267) at org.eclipse.persistence.sessions.DefaultConnector.connect(DefaultConnector.java:85) at org.eclipse.persistence.internal.jpa.EntityManagerSetupImpl.deploy(EntityManagerSetupImpl.java:392) at org.eclipse.persistence.sessions.DatasourceLogin.connectToDatasource(DatasourceLogin.java:162) at org.eclipse.persistence.internal.jpa.EntityManagerFactoryImpl.getServerSession(EntityManagerFactoryImpl.java:151) at org.eclipse.persistence.internal.sessions.DatabaseSessionImpl.loginAndDetectDatasource(DatabaseSessionImpl.java:584) at org.eclipse.persistence.internal.jpa.EntityManagerFactoryImpl.createEntityManagerImpl(EntityManagerFactoryImpl.java:207) at org.eclipse.persistence.internal.jpa.EntityManagerFactoryProvider.login(EntityManagerFactoryProvider.java:228) at org.eclipse.persistence.internal.jpa.EntityManagerFactoryImpl.createEntityManager(EntityManagerFactoryImpl.java:195) at com.mycompany.chapter2_ex1.Main.main(Main.java:31) Caused by: Exception [EclipseLink-4003] (Eclipse Persistence Services - 2.0.0.v20091127-r5931): org.eclipse.persistence.exceptions.DatabaseException Exception Description: Configuration error. Class [org.apache.derby.jdbc.ClientDriver] not found. at org.eclipse.persistence.internal.jpa.EntityManagerSetupImpl.deploy(EntityManagerSetupImpl.java:368) at org.eclipse.persistence.exceptions.DatabaseException.configurationErrorClassNotFound(DatabaseException.java:82) at org.eclipse.persistence.internal.jpa.EntityManagerFactoryImpl.getServerSession(EntityManagerFactoryImpl.java:151) at org.eclipse.persistence.sessions.DefaultConnector.loadDriverClass(DefaultConnector.java:267) at org.eclipse.persistence.internal.jpa.EntityManagerFactoryImpl.createEntityManagerImpl(EntityManagerFactoryImpl.java:207) at org.eclipse.persistence.sessions.DefaultConnector.connect(DefaultConnector.java:85) at org.eclipse.persistence.internal.jpa.EntityManagerFactoryImpl.createEntityManager(EntityManagerFactoryImpl.java:195) at org.eclipse.persistence.sessions.DatasourceLogin.connectToDatasource(DatasourceLogin.java:162) at com.mycompany.chapter2_ex1.Main.main(Main.java:31) at org.eclipse.persistence.internal.sessions.DatabaseSessionImpl.loginAndDetectDatasource(DatabaseSessionImpl.java:584) at org.eclipse.persistence.internal.jpa.EntityManagerFactoryProvider.login(EntityManagerFactoryProvider.java:228) at org.eclipse.persistence.internal.jpa.EntityManagerSetupImpl.deploy(EntityManagerSetupImpl.java:368) ... 4 more [ERROR]The following mojo encountered an error while executing: [ERROR]Group-Id: org.codehaus.mojo [ERROR]Artifact-Id: exec-maven-plugin [ERROR]Version: 1.1.1 [ERROR]Mojo: exec [ERROR]brought in via: Direct invocation [ERROR]While building project: [ERROR]Group-Id: com.mycompany [ERROR]Artifact-Id: chapter2_ex1 [ERROR]Version: 1.0-SNAPSHOT [ERROR]From file: C:\Users\Charlotte\Documents\NetBeansProjects\chapter2_ex1\pom.xml [ERROR]Reason: Result of cmd.exe /X /C ""C:\Program Files\Java\jdk1.6.0_11\bin\java.exe" -classpath C:\Users\Charlotte\Documents\NetBeansProjects\chapter2_ex1\target\classes;C:\Users\Charlotte\.m2\repository\javax\persistence\persistence-api\1.0\persistence-api-1.0.jar;C:\Users\Charlotte\.m2\repository\org\eclipse\persistence\javax.persistence\2.0.0\javax.persistence-2.0.0.jar;C:\Users\Charlotte\.m2\repository\org\eclipse\persistence\eclipselink\2.0.0-RC1\eclipselink-2.0.0-RC1.jar com.mycompany.chapter2_ex1.Main" execution is: '1'. ------------------------------------------------------------------------ For more information, run with the -e flag ------------------------------------------------------------------------ BUILD FAILED ------------------------------------------------------------------------ Total time: 3 seconds Finished at: Sun Apr 04 18:22:55 CEST 2010 Final Memory: 47M/94M ------------------------------------------------------------------------ Theses exceptions rose even if I can run the database by using the console (ij) and when I connect the Database, no errors are showing. Can you help me please? Thank you very much. Regards.

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  • Visual Modeler in VS 6

    - by Yogi Yang 007
    Till date I have used only VB6 Professional for developing apps. But recently I have joined a company which owns VS 6 Enterprise (or some such version) I was just exploring what is available in VS 6 Ent. and I found Visual Modeler. The tutorial provided with it is not good enough. I was wondering if there is any detailed tutorial(s) for Visual Modeler? Is Visual Modeler a cut down version of Rational Rose? I have never used such a tool for developing apps. What are the benefits of developing apps like this? The document claims that one can speed up development and modifications of VB6 & VC++ 6 applications. How true is this claim? My company also has Ration Rose 6. Which is better Rational Rose 6 or Visual Modeler that comes with VS 6 Ent.?

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  • How do I fix "bzr: ERROR: Unable to determine your name. "?

    - by Daniel
    I am trying to quickly create my first app and am getting gtk errors when I try to run or create an application. Here is a copy of what I executed and what results I got: daniel@laptop:~/PyDevelopment$ quickly create ubuntu-application app001 Creating project directory app001 Creating bzr repository and committing Launching your newly created project! /usr/lib/python2.7/dist-packages/gi/overrides/Gtk.py:391: Warning: g_object_set_property: construct property "type" for object `Window' can't be set after construction Gtk.Window.__init__(self, type=type, **kwds) /usr/lib/python2.7/dist-packages/gi/overrides/Gtk.py:391: Warning: g_object_set_property: construct property "type" for object `App001Window' can't be set after construction Gtk.Window.__init__(self, type=type, **kwds) Congrats, your new project is setup! cd /home/daniel/PyDevelopment/app001/ to start hacking. daniel@laptop:~/PyDevelopment$ cd app001 daniel@laptop:~/PyDevelopment/app001$ quickly design daniel@laptop:~/PyDevelopment/app001$ quickly rub ERROR: No rub command found in template ubuntu-application. Candidate commands are: add, commands, configure, create, debug, design, edit, getstarted, help, license, package, quickly, release, run, save, share, submitubuntu, test, tutorial, upgrade daniel@laptop:~/PyDevelopment/app001$ quickly run /usr/lib/python2.7/dist-packages/gi/overrides/Gtk.py:391: Warning: g_object_set_property: construct property "type" for object `Window' can't be set after construction Gtk.Window.__init__(self, type=type, **kwds) /usr/lib/python2.7/dist-packages/gi/overrides/Gtk.py:391: Warning: g_object_set_property: construct property "type" for object `App001Window' can't be set after construction Gtk.Window.__init__(self, type=type, **kwds) daniel@laptop:~/PyDevelopment/app001$ quickly package .......Ubuntu packaging created in debian/ ....... ---------------------------------- Command returned some ERRORS: ---------------------------------- bzr: ERROR: Unable to determine your name. ---------------------------------- ERROR: can't create or update ubuntu package ERROR: package command failed Aborting

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  • Compiling libcurl for mingw32 (Windows) on mac os x 10.6

    - by Daniel
    Hello. I'm compiling libcurl for mingw32 as follows: ./configure --prefix=/Users/daniel/mingw32 "CFLAGS= -ABI=32" make make install But when compiling a program using mingw32-gcc: i386-mingw32-gcc -lcurl -o bin/remote-win.exe remote.c i get: In file included from /Users/daniel/mingw32/usr/local/include/curl/curl.h:34, from remote.c:6: /Users/daniel/mingw32/usr/local/include/curl/curlbuild.h:152:26: sys/socket.h: No such file or directory In file included from /Users/daniel/mingw32/usr/local/include/curl/curl.h:34, from remote.c:6: /Users/daniel/mingw32/usr/local/include/curl/curlbuild.h:165: error: syntax error before "curl_socklen_t" In file included from /Users/daniel/mingw32/usr/local/include/curl/curl.h:35, from remote.c:6: /Users/daniel/mingw32/usr/local/include/curl/curlrules.h:143: error: size of array `__curl_rule_01__' is negative /Users/daniel/mingw32/usr/local/include/curl/curlrules.h:153: error: size of array `__curl_rule_02__' is negative I'm pretty sure the error is because curl_socklen_t does not exist on windows. I've tried --target=--mingw32 but still no success. Please help

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  • Un plugin jQuery multitâche : méthode de construction personnelle et exemples. Adapter jQuery à vos besoins, niveau 2, par Daniel Hagnoul

    Plugin multitâche : méthode de construction personnelle et exemples Adapter jQuery à vos besoins, niveau 2 Résumé : La plupart des plugins exécutent une seule tâche et les méthodes d'écriture de plugin utilisées dans « Mon Cahier d'exercices », dans la FAQ jQuery et dans l'article « Adapter jQuery à vos besoins » couvrent la majorité des besoins. Lorsque l'on souhaite inclure la modification des options et implémenter plusieurs méthodes on doit penser multitâche . Dans cet ...

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  • Counting number of children in hierarchical SQL data

    - by moontear
    Hello, for a simple data structure such as so: ID parentID Text Price 1 Root 2 1 Flowers 3 1 Electro 4 2 Rose 10 5 2 Violet 5 6 4 Red Rose 12 7 3 Television 100 8 3 Radio 70 9 8 Webradio 90 For reference, the hierarchy tree looks like this: ID Text Price 1 Root |2 Flowers |-4 Rose 10 | |-6 Red Rose 12 |-5 Violet 5 |3 Electro |-7 Television 100 |-8 Radio 70 |-9 Webradio 90 I'd like to count the number of children per level. So I would get a new column "NoOfChildren" like so: ID parentID Text Price NoOfChildren 1 Root 8 2 1 Flowers 3 3 1 Electro 3 4 2 Rose 10 1 5 2 Violet 5 0 6 4 Red Rose 12 0 7 3 Television 100 0 8 3 Radio 70 1 9 8 Webradio 90 0 I read a few things about hierarchical data, but I somehow get stuck on the multiple inner joins on the parentIDs. Maybe someone could help me out here. moon

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  • Counting number of children in hierarchical SQL data

    - by moontear
    for a simple data structure such as so: ID parentID Text Price 1 Root 2 1 Flowers 3 1 Electro 4 2 Rose 10 5 2 Violet 5 6 4 Red Rose 12 7 3 Television 100 8 3 Radio 70 9 8 Webradio 90 For reference, the hierarchy tree looks like this: ID Text Price 1 Root |2 Flowers |-4 Rose 10 | |-6 Red Rose 12 |-5 Violet 5 |3 Electro |-7 Television 100 |-8 Radio 70 |-9 Webradio 90 I'd like to count the number of children per level. So I would get a new column "NoOfChildren" like so: ID parentID Text Price NoOfChildren 1 Root 8 2 1 Flowers 3 3 1 Electro 3 4 2 Rose 10 1 5 2 Violet 5 0 6 4 Red Rose 12 0 7 3 Television 100 0 8 3 Radio 70 1 9 8 Webradio 90 0 I read a few things about hierarchical data, but I somehow get stuck on the multiple inner joins on the parentIDs. Maybe someone could help me out here. moon

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  • C++ AMP Video Overview

    - by Daniel Moth
    I hope to be recording some C++ AMP screencasts for channel9 soon (you'll find them through my regular screencasts link on the left), and in all of them I will assume you have watched this short interview overview of C++ AMP.   Note: I think there were some technical problems with streaming so best to download the "High Quality WMV" or switch to progressive format. Comments about this post by Daniel Moth welcome at the original blog.

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  • Debugging and Profiling in Visual Studio 2013

    - by Daniel Moth
    The recently released Visual Studio 2013 Preview includes a boat-load of new features in the diagnostics space, that my team delivered (along with other teams at Microsoft). I enumerated my favorites over on the official Visual Studio blog so if you are interested go read the list and follow the links: Visual Studio 2013 Diagnostics Investments Comments about this post by Daniel Moth welcome at the original blog.

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  • Confusion on networking service start/stop in Ubuntu

    - by Daniel Ball
    I'm preparing to move and took down two of my servers, leaving only one with some essential services running. What I neglected to consider was that one was the DHCP server(which I realized when somebody contacted me saying they couldn't connect. Whups). So because I only have a few hosts on this small network, I opted to just statically configure them for now. One of these is a new Ubuntu 11.04 server, where I have very little experience. I edited /etc/network/interfaces and /etc/hosts to reflect my changes. I ran $sudo /etc/init.d/networking stop *deconfiguring network interfaces ... So yay. Then I try to start, it gives me the mumbo jumbo about using services (why didn't it do that for the stop?) So instead I run ... $sudo service networking start networking stop/waiting Now, to me that says the status of the service is stopped. But when I ping another computer, I get a successful reply. So is it not actually stopped? More importantly, am I doing something wrong? Edit daniel@FOOBAR:~$ sudo service networking status networking stop/waiting daniel@FOOBAR:~$ sudo service networking stop stop: Unknown instance: daniel@FOOBAR:~$ sudo service networking status networking stop/waiting daniel@FOOBAR:~$ sudo service networking start networking stop/waiting daniel@FOOBAR:~$ sudo service networking status networking stop/waiting So you can see why I ran /etc/init.d/networking stop instead. For some reason upstart (that is what "services" is, right?) isn't working with stop. cat /etc/hosts 127.0.0.1 localhost 127.0.1.1 FOOBAR 198.3.9.2 FOOBAR #Added entry July 19 2011 # The following lines are desirable for IPv6 capable hosts ::1 ip6-localhost ip6-loopback fe00::0 ip6-localnet ff00::0 ip6-mcastprefix ff02::1 ip6-allnodes ff02::2 ip6-allrouters cat /etc/network/interfaces # This file describes the network interfaces available on your system # and how to activate them. For more information, see interfaces(5). # The loopback network interface auto lo iface lo inet loopback # The primary network interface #auto eth0 #iface eth0 inet dhcp # hostname FOOBAR auto eth0 iface eth0 inet static address 198.3.9.2 netmask 255.255.255.0 network 198.3.9.0 broadcast 198.3.9.255 gateway 198.3.9.15 No I didn't save backups, it was just a minor change so I just commented out the old DHCP setting. Edit I set everything back to original settings and set up a DHCP server. "starting" networking does the same thing. I can only assume this is normal, I just don't know WHY. It can't be anything to do with the configuration files, since they've been restored.

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  • Screencasts introducing C++ AMP

    - by Daniel Moth
    It has been almost 2.5 years since I last recorded a screencast, and I had forgotten how time consuming they are to plan/record/edit/produce/publish, but at the same time so much fun to see the end result! So below are links to 4 screencasts to teach you C++ AMP basics from scratch (even if you class yourself as a .NET developer you'll be able to follow). Setup code - part 1 array_view, extent, index - part 2 parallel_for_each - part 3 accelerator - part 4 If you have comments/questions about what is shown in each video, please leave them at each video recoding. If you have generic questions about C++ AMP, please ask in the C++ AMP MSDN forum. Comments about this post by Daniel Moth welcome at the original blog.

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  • Translator by Moth v2

    - by Daniel Moth
    If you are looking for the full manual for this Windows Phone app you can find it here: "Translator by Moth". While the manual has no images (just text), in this post I will share images and if you like them, go get "Translator by Moth" from the Windows Phone marketplace. open the app from the app list or through a pinned tile (including secondary tiles for specific translations)    language picker (~40 languages)     "current" page     "saved" page    "about" page Like? Go get Translator by Moth! Comments about this post by Daniel Moth welcome at the original blog.

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  • Windows 8 Task Manager

    - by Daniel Moth
    If you are a user of Task Manager (btw, make sure you've read my Task Manager shortcut tips), you must read the blog post on the overhaul coming to Task Manager in Windows 8 – coo stuff! Also, long time readers of my blog will know that back in 2008 I wrote about Windows Vista and Windows 7 number_of_cores support, and in 2009 I shared a widely borrowed screenshot of Task Manager from one of our 128-core machines. So I was excited to just read on the Windows 8 blog that Windows 8 will support up to 640 cores. They shared a screenshot of a 160-core machine, so there goes my record ;-) Comments about this post by Daniel Moth welcome at the original blog.

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