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• Cannot parse persistence unit from class path resource

  - by Grzegorz S

  so I have this problem in running my Spring WS app which implements JPA ( or should implement..) I have a problem with running a WS, it looks like my Spring context can't find file persistence.xml Which i am able to believe because i did not have generated META-INF folder in my template (which is Maven project template with archetype org.springframework.ws) I have created META-INF manually. Here is the HTTP 500: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'caChainDao' defined in file [E:\STS\vfabric-tc-server-developer-2.7.2.RELEASE\zz\wtpwebapps\FCAWSv4\WEB-INF\classes\pl\famoc\test\ws\db\dao\caChainDao.class]: Initialization of bean failed; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'entityManagerFactory' defined in ServletContext resource [/WEB-INF/spring-ws-servlet.xml]: Invocation of init method failed; nested exception is java.lang.IllegalArgumentException: Cannot parse persistence unit from class path resource [persistence.xml] org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:527) org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:456) org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:294) org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:225) org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:291) org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:193) org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:609) org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:918) org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:469) org.springframework.web.servlet.FrameworkServlet.configureAndRefreshWebApplicationContext(FrameworkServlet.java:631) org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.java:588) org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.java:645) org.springframework.web.servlet.FrameworkServlet.initWebApplicationContext(FrameworkServlet.java:508) org.springframework.web.servlet.FrameworkServlet.initServletBean(FrameworkServlet.java:449) org.springframework.web.servlet.HttpServletBean.init(HttpServletBean.java:133) javax.servlet.GenericServlet.init(GenericServlet.java:160) org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:472) org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:99) org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:929) org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:407) org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1002) org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:585) org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:310) java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110) java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603) java.lang.Thread.run(Thread.java:722) Here it is my persistence.xml <?xml version="1.0" encoding="UTF-8" ?> <persistence xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/persistence http://java.sun.com/xml/ns/persistence/persistence_2_0.xsd" version="2.0" xmlns="http://java.sun.com/xml/ns/persistence"> <persistence-unit name="persistenceUnit" transaction-type="RESOURCE_LOCAL" /> </persistence> here it is where i am looking for it <property name="persistenceXmlLocation" value="classpath:persistence.xml" /> and here it is path to this xml in my classpath: src/main/webapp/META-INF/persistence.xml Could anyone give me a hint what am i missing?

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• Threads sharing Stack locations?

  - by Achilles

  Hi there, I did a search but couldn't find anything. I was reading a paper that mentions thread sharing stack locations.... I wonder how and why'd that be needed. Any examples would be highly appreciated. Many thanks.

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• "Invalid signature file" when attempting to run a .jar

  - by oskar

  My java program is packaged in a jar file and makes use of an external jar library, bouncy castle. My code compiles fine, but running the jar leads to the following error: Exception in thread "main" java.lang.SecurityException: Invalid signature file digest for Manifest main attributes I've googled for over an hour searching for an explanation and found very little of value. If anyone has seen this error before and could offer some help, I would be obliged.

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• Spring transaction demarcation causes new Hibernate session despite use of OSIV

  - by Kelly Ellis

  I'm using Hibernate with OpenSessionInViewInterceptor so that a single Hibernate session will be used for the entire HTTP request (or so I wish). The problem is that Spring-configured transaction boundaries are causing a new session to be created, so I'm running into the following problem (pseudocode): Start in method marked @Transactional(propagation = Propagation.SUPPORTS, readOnly = false) Hibernate session #1 starts Call DAO method to update object foo; foo gets loaded into session cache for session #1 Call another method to update foo.bar, this one is marked @Transactional(propagation = Propagation.REQUIRED, readOnly = false) Transaction demarcation causes suspension of current transaction synchronization, which temporarily unbinds the current Hibernate session Hibernate session #2 starts since there's no currently-existing session Update field bar on foo (loading foo into session cache #2); persist to DB Transaction completes and method returns, session #1 resumes Call yet another method to update another field on foo Load foo from session cache #1, with old, incorrect value of bar Update field foo.baz, persist foo to DB foo.bar's old value overwrites the change we made in the previous step Configuration looks like: <bean name="openSessionInViewInterceptor" class="org.springframework.orm.hibernate3.support.OpenSessionInViewInterceptor" autowire="byName"> <property name="flushModeName"> <value>FLUSH_AUTO</value> </property> </bean> <bean id="txManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager"> <property name="dataSource" ref="myDataSource" /> </bean> <bean id="sessionFactory" class="org.springframework.orm.hibernate3.LocalSessionFactoryBean"> <property name="useTransactionAwareDataSource" value="true" /> <property name="mappingLocations"> <list> <value>/WEB-INF/xml/hibernate/content.hbm.xml</value> </list> </property> <property name="lobHandler"> <ref local="oracleLobHandler" /> </property> <!--property name="entityInterceptor" ref="auditLogInterceptor" /--> <property name="hibernateProperties" ref="HibernateProperties" /> <property name="dataSource" ref="myDataSource" /> </bean> I've done some debugging and figured out exactly where this is happening, here is the stack trace: Daemon Thread [http-8080-1] (Suspended (entry into method doUnbindResource in TransactionSynchronizationManager)) TransactionSynchronizationManager.doUnbindResource(Object) line: 222 TransactionSynchronizationManager.unbindResource(Object) line: 200 SpringSessionSynchronization.suspend() line: 115 DataSourceTransactionManager(AbstractPlatformTransactionManager).doSuspendSynchronization() line: 620 DataSourceTransactionManager(AbstractPlatformTransactionManager).suspend(Object) line: 549 DataSourceTransactionManager(AbstractPlatformTransactionManager).getTransaction(TransactionDefinition) line: 372 TransactionInterceptor(TransactionAspectSupport).createTransactionIfNecessary(TransactionAttribute, String) line: 263 TransactionInterceptor.invoke(MethodInvocation) line: 101 ReflectiveMethodInvocation.proceed() line: 171 JdkDynamicAopProxy.invoke(Object, Method, Object[]) line: 204 $Proxy14.changeVisibility(Long, ContentStatusVO, ContentAuditData) line: not available I can't figure out why transaction boundaries (even "nested" ones - though here we're just moving from SUPPORTS to REQUIRED) would cause the Hibernate session to be suspended, even though OpenSessionInViewInterceptor is in use. When the session is unbound, I see the following in my logs: [2010-02-16 18:20:59,150] DEBUG org.springframework.transaction.support.TransactionSynchronizationManager Removed value [org.springframework.orm.hibernate3.SessionHolder@7def534e] for key [org.hibernate.impl.SessionFactoryImpl@693f23a2] from thread [http-8080-1]

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• NullPointerException when trying to connect to web service using kSoap method Android

  - by benjamin schultz

  My web service should be returning an integer, but every time i run the code i get the NullPointerException error. Any ideas or help would be very appreciated Here's my code: public class CGCountTest extends Activity { TextView testTV; private static final String NAMESPACE = "http://passport-america.com/webservices/"; private static final String URL = "http://localhost:11746/Service1.asmx"; private static final String SOAP_ACTION = "http://www.passport-america.com/webservices/getCGCount"; private static final String METHOD_NAME = "getCGCount"; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.soap_test); SoapObject request = new SoapObject(NAMESPACE, METHOD_NAME); SoapSerializationEnvelope envelope = new SoapSerializationEnvelope(SoapEnvelope.VER11); envelope.dotNet = true; envelope.setOutputSoapObject(request); HttpTransportSE androidHttpTransport = new HttpTransportSE(URL); try { androidHttpTransport.call(SOAP_ACTION, envelope); java.lang.Integer result = (Integer)envelope.getResponse(); TextView testTV = (TextView)findViewById(R.id.testTV); result.toString(); testTV.setText(result); } catch(Exception e) { testTV.setText(e.getMessage()); } } here's the logcat 06-02 15:13:36.557: WARN/dalvikvm(326): threadid=3: thread exiting with uncaught exception (group=0x4001aa28) 06-02 15:13:36.557: ERROR/AndroidRuntime(326): Uncaught handler: thread main exiting due to uncaught exception 06-02 15:13:36.876: ERROR/AndroidRuntime(326): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.pa.passammain/com.pa.passammain.CGCountTest}: java.lang.NullPointerException 06-02 15:13:36.876: ERROR/AndroidRuntime(326): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2401) 06-02 15:13:36.876: ERROR/AndroidRuntime(326): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2417) 06-02 15:13:36.876: ERROR/AndroidRuntime(326): at android.app.ActivityThread.access$2100(ActivityThread.java:116) 06-02 15:13:36.876: ERROR/AndroidRuntime(326): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1794) 06-02 15:13:36.876: ERROR/AndroidRuntime(326): at android.os.Handler.dispatchMessage(Handler.java:99) 06-02 15:13:36.876: ERROR/AndroidRuntime(326): at android.os.Looper.loop(Looper.java:123) 06-02 15:13:36.876: ERROR/AndroidRuntime(326): at android.app.ActivityThread.main(ActivityThread.java:4203) 06-02 15:13:36.876: ERROR/AndroidRuntime(326): at java.lang.reflect.Method.invokeNative(Native Method) 06-02 15:13:36.876: ERROR/AndroidRuntime(326): at java.lang.reflect.Method.invoke(Method.java:521) 06-02 15:13:36.876: ERROR/AndroidRuntime(326): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:791) 06-02 15:13:36.876: ERROR/AndroidRuntime(326): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:549) 06-02 15:13:36.876: ERROR/AndroidRuntime(326): at dalvik.system.NativeStart.main(Native Method) 06-02 15:13:36.876: ERROR/AndroidRuntime(326): Caused by: java.lang.NullPointerException 06-02 15:13:36.876: ERROR/AndroidRuntime(326): at com.pa.passammain.CGCountTest.onCreate(CGCountTest.java:46) 06-02 15:13:36.876: ERROR/AndroidRuntime(326): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1123) 06-02 15:13:36.876: ERROR/AndroidRuntime(326): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2364) 06-02 15:13:36.876: ERROR/AndroidRuntime(326): ... 11 more i think my url string may be the problem, but i've tried using my ip with no luck

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• Is WCF Netmsmq binding multithreaded?

  - by Balaji

  We are using .net WCF with netMsmqBinding. Is the netMsmqBinding multi threaded? Is there a way to change the bindings to use single thread?

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• What is the meaning of ": base" in the constructor definition ?

  - by DotNetBeginner

  What is the meaning of ": base" in the costructor of following class(MyClass) ? Please explain the concept behind constructor definition given below for class MyClass. public class MyClass: WorkerThread { public MyClass(object data): base(data) { // some code } } public abstract class WorkerThread { private object ThreadData; private Thread thisThread; public WorkerThread(object data) { this.ThreadData = data; } public WorkerThread() { ThreadData = null; } }

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• crash when linking swc with Alchemy

  - by paleozogt

  I have a project I'm trying to compile with alchemy. It will compile .o and .a files, but when trying to create a .swc, it will fail. It appears to crash with this error: g++ -swc -o mylib.swc my-flex-interface.cpp mylib.a Cannot yet select: 0x279c810: ch,flag = AVM2ISD::CALL - A call instruction 0x279c7a0, 0x29c4350 0 llc 0x00636dfe _ZNSt8_Rb_treeIN4llvm3sys4PathES2_St9_IdentityIS2_ESt4lessIS2_ESaIS2_EE13insert_uniqueERKS2_ + 6078 1 llc 0x006373a2 _ZNSt8_Rb_treeIN4llvm3sys4PathES2_St9_IdentityIS2_ESt4lessIS2_ESaIS2_EE13insert_uniqueERKS2_ + 7522 2 libSystem.B.dylib 0x9530942b _sigtramp + 43 3 ??? 0xffffffff 0x0 + 4294967295 4 libSystem.B.dylib 0x953968e5 raise + 26 5 libSystem.B.dylib 0x953ac99c abort + 93 6 llc 0x002f4fe0 _ZN98_GLOBAL__N__Volumes_data_dev_FlaCC_llvm_2.1_lib_Target_AVM2_AVM2ISelDAGToDAG.cpp_00000000_F04616B616AVM2DAGToDAGISel6Emit_7ERKN4llvm9SDOperandEj + 0 7 llc 0x002f8e1b _ZN98_GLOBAL__N__Volumes_data_dev_FlaCC_llvm_2.1_lib_Target_AVM2_AVM2ISelDAGToDAG.cpp_00000000_F04616B616AVM2DAGToDAGISel10SelectCodeEN4llvm9SDOperandE + 2219 8 llc 0x002fa193 _ZN98_GLOBAL__N__Volumes_data_dev_FlaCC_llvm_2.1_lib_Target_AVM2_AVM2ISelDAGToDAG.cpp_00000000_F04616B616AVM2DAGToDAGISel10SelectRootEN4llvm9SDOperandE + 819 9 llc 0x002e6a2c _ZN4llvm19X86_64TargetMachineD0Ev + 65116 10 llc 0x003de4ca _ZN4llvm11StoreSDNodeD1Ev + 1610 11 llc 0x0040d3fe _ZN4llvm11StoreSDNodeD1Ev + 193918 12 llc 0x0040f92e _ZN4llvm11StoreSDNodeD1Ev + 203438 13 llc 0x005d1926 _ZN4llvm12FunctionPassD1Ev + 20998 14 llc 0x005d1f3a _ZN4llvm12FunctionPassD1Ev + 22554 15 llc 0x005d20c5 _ZN4llvm12FunctionPassD1Ev + 22949 16 llc 0x00002e44 0x0 + 11844 17 llc 0x00001f36 0x0 + 7990 18 ??? 0x00000006 0x0 + 6 make[2]: *** [src/app/alchemy/sonic.swc] Error 6 make[1]: *** [src/app/alchemy/CMakeFiles/alchemy.dir/all] Error 2 make: *** [all] Error 2 I'm not familiar enough with LLVM (which Alchemy uses under the hood) to figure out what this error means. Any ideas?

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• Correct mapping for SHChangeNotify in JNA

  - by user389658

  This is syntax for SHChangeNotify function from MSDN: void SHChangeNotify( LONG wEventId, UINT uFlags, __in_opt LPCVOID dwItem1, __in_opt LPCVOID dwItem2 ); I've to write its Java counterpart in Java Native Access [JNA], but this declaration seems to be wrong: public interface Shell32 extends com.sun.jna.platform.win32.Shell32 { public Shell32 INSTANCE = (Shell32) Native.loadLibrary(Shell32.class); void SHChangeNotify(long wEventId, int uFlags, Pointer dwItem1, Pointer dwItem2); } I got the following exception: Exception in thread "main" java.lang.UnsatisfiedLinkError: Error looking up function 'SHChangeNotify' Any idea how to write it correctly?

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• Questions related to writing your own file downloader using multiple threads java

  - by Shekhar

  Hello In my current company, i am doing a PoC on how we can write a file downloader utility. We have to use socket programming(TCP/IP) for downloading the files. One of the requirements of the client is that a file(which will be large in size) should be transfered in chunks for example if we have a file of 5Mb size then we can have 5 threads which transfer 1 Mb each. I have written a small application which downloads a file. You can download the eclipe project from http://www.fileflyer.com/view/QM1JSC0 A brief explanation of my classes FileSender.java This class provides the bytes of file. It has a method called sendBytesOfFile(long start,long end, long sequenceNo) which gives the number of bytes. import java.io.File; import java.io.IOException; import java.util.zip.CRC32; import org.apache.commons.io.FileUtils; public class FileSender { private static final String FILE_NAME = "C:\\shared\\test.pdf"; public ByteArrayWrapper sendBytesOfFile(long start,long end, long sequenceNo){ try { File file = new File(FILE_NAME); byte[] fileBytes = FileUtils.readFileToByteArray(file); System.out.println("Size of file is " +fileBytes.length); System.out.println(); System.out.println("Start "+start +" end "+end); byte[] bytes = getByteArray(fileBytes, start, end); ByteArrayWrapper wrapper = new ByteArrayWrapper(bytes, sequenceNo); return wrapper; } catch (IOException e) { throw new RuntimeException(e); } } private byte[] getByteArray(byte[] bytes, long start, long end){ long arrayLength = end-start; System.out.println("Start : "+start +" end : "+end + " Arraylength : "+arrayLength +" length of source array : "+bytes.length); byte[] arr = new byte[(int)arrayLength]; for(int i = (int)start, j =0; i < end;i++,j++){ arr[j] = bytes[i]; } return arr; } public static long fileSize(){ File file = new File(FILE_NAME); return file.length(); } } Second Class is FileReceiver.java - This class receives the file. Small Explanation what this file does This class finds the size of the file to be fetched from Sender Depending upon the size of the file it finds the start and end position till the bytes needs to be read. It starts n number of threads giving each thread start,end, sequence number and a list which all the threads share. Each thread reads the number of bytes and creates a ByteArrayWrapper. ByteArrayWrapper objects are added to the list Then i have while loop which basically make sure that all threads have done their work finally it sorts the list based on the sequence number. then the bytes are joined, and a complete byte array is formed which is converted to a file. Code of File Receiver package com.filedownloader; import java.io.File; import java.io.IOException; import java.util.ArrayList; import java.util.Collections; import java.util.Comparator; import java.util.List; import java.util.zip.CRC32; import org.apache.commons.io.FileUtils; public class FileReceiver { public static void main(String[] args) { FileReceiver receiver = new FileReceiver(); receiver.receiveFile(); } public void receiveFile(){ long startTime = System.currentTimeMillis(); long numberOfThreads = 10; long filesize = FileSender.fileSize(); System.out.println("File size received "+filesize); long start = filesize/numberOfThreads; List<ByteArrayWrapper> list = new ArrayList<ByteArrayWrapper>(); for(long threadCount =0; threadCount<numberOfThreads ;threadCount++){ FileDownloaderTask task = new FileDownloaderTask(threadCount*start,(threadCount+1)*start,threadCount,list); new Thread(task).start(); } while(list.size() != numberOfThreads){ // this is done so that all the threads should complete their work before processing further. //System.out.println("Waiting for threads to complete. List size "+list.size()); } if(list.size() == numberOfThreads){ System.out.println("All bytes received "+list); Collections.sort(list, new Comparator<ByteArrayWrapper>() { @Override public int compare(ByteArrayWrapper o1, ByteArrayWrapper o2) { long sequence1 = o1.getSequence(); long sequence2 = o2.getSequence(); if(sequence1 < sequence2){ return -1; }else if(sequence1 > sequence2){ return 1; } else{ return 0; } } }); byte[] totalBytes = list.get(0).getBytes(); byte[] firstArr = null; byte[] secondArr = null; for(int i = 1;i<list.size();i++){ firstArr = totalBytes; secondArr = list.get(i).getBytes(); totalBytes = concat(firstArr, secondArr); } System.out.println(totalBytes.length); convertToFile(totalBytes,"c:\\tmp\\test.pdf"); long endTime = System.currentTimeMillis(); System.out.println("Total time taken with "+numberOfThreads +" threads is "+(endTime-startTime)+" ms" ); } } private byte[] concat(byte[] A, byte[] B) { byte[] C= new byte[A.length+B.length]; System.arraycopy(A, 0, C, 0, A.length); System.arraycopy(B, 0, C, A.length, B.length); return C; } private void convertToFile(byte[] totalBytes,String name) { try { FileUtils.writeByteArrayToFile(new File(name), totalBytes); } catch (IOException e) { throw new RuntimeException(e); } } } Code of ByteArrayWrapper package com.filedownloader; import java.io.Serializable; public class ByteArrayWrapper implements Serializable{ private static final long serialVersionUID = 3499562855188457886L; private byte[] bytes; private long sequence; public ByteArrayWrapper(byte[] bytes, long sequenceNo) { this.bytes = bytes; this.sequence = sequenceNo; } public byte[] getBytes() { return bytes; } public long getSequence() { return sequence; } } Code of FileDownloaderTask import java.util.List; public class FileDownloaderTask implements Runnable { private List<ByteArrayWrapper> list; private long start; private long end; private long sequenceNo; public FileDownloaderTask(long start,long end,long sequenceNo,List<ByteArrayWrapper> list) { this.list = list; this.start = start; this.end = end; this.sequenceNo = sequenceNo; } @Override public void run() { ByteArrayWrapper wrapper = new FileSender().sendBytesOfFile(start, end, sequenceNo); list.add(wrapper); } } Questions related to this code 1) Does file downloading becomes fast when multiple threads is used? In this code i am not able to see the benefit. 2) How should i decide how many threads should i create ? 3) Are their any opensource libraries which does that 4) The file which file receiver receives is valid and not corrupted but checksum (i used FileUtils of common-io) does not match. Whats the problem? 5) This code gives out of memory when used with large file(above 100 Mb) i.e. because byte array which is created. How can i avoid? I know this is a very bad code but i have to write this in one day -:). Please suggest any other good way to do this? Thanks Shekhar

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• Eclipselink read complex oject model in an ordered way

  - by Raven

  Hi, I need to read a complex model in an ordered way with eclipselink. The order is mandantory because it is a huge database and I want to have an output of a small portion of the database in a jface tableview. Trying to reorder it in the loading/quering thread takes too long and ordering it in the LabelProvider blocks the UI thread too much time, so I thought if Eclipselink could be used that way, that the database will order it, it might give me the performance I need. Unfortunately the object model can not be changed :-( The model is something like: @SuppressWarnings("serial") @Entity public class Thing implements Serializable { @Id @GeneratedValue(strategy = GenerationType.TABLE) private int id; private String name; @OneToMany(cascade=CascadeType.ALL) @PrivateOwned private List<Property> properties = new ArrayList<Property>(); ... // getter and setter following here } public class Property implements Serializable { @Id @GeneratedValue(strategy = GenerationType.TABLE) private int id; @OneToOne private Item item; private String value; ... // getter and setter following here } public class Item implements Serializable { @Id @GeneratedValue(strategy = GenerationType.TABLE) private int id; private String name; .... // getter and setter following here } // Code end In the table view the y-axis is more or less created with the query Query q = em.createQuery("SELECT m FROM Thing m ORDER BY m.name ASC"); using the "name" attribute from the Thing objects as label. In the table view the x-axis is more or less created with the query Query q = em.createQuery("SELECT m FROM Item m ORDER BY m.name ASC"); using the "name" attribute from the Item objects as label. Each cell has the value Things.getProperties().get[x].getValue() Unfortunately the list "properties" is not ordered, so the combination of cell value and x-axis column number (x) is not necessarily correct. Therefore I need to order the list "properties" in the same way as I ordered the labeling of the x-axis. And exactly this is the thing I dont know how it is done. So querying for the Thing objects should return the list "properties" "ORDER BY name ASC" but of the "Item"s objects. My ideas are something like having a query with two JOINs. Joing Things with Property and with Item but somehow I was unable to get it to work yet. Thank you for your help and your ideas to solve this riddle.

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• jruby rubygems update breaks jgem

  - by brad

  Has anyone seen this: ?? No jgem command works at all?? Though jruby -S gem list does work. I'm using jruby 1.3.1 and Sun Java6 jre root@test:/usr/local: jgem --version 1.3.3 root@test:/usr/local: jgem update --system JRuby limited openssl loaded. gem install jruby-openssl for full support. http://wiki.jruby.org/wiki/JRuby_Builtin_OpenSSL Updating RubyGems Updating rubygems-update Successfully installed rubygems-update-1.3.6 /usr/local/jruby/lib/ruby/site_ruby/1.8/rubygems/commands/update_command.rb:103:Warning: Gem::SourceIndex#search support for String patterns is deprecated Updating RubyGems to 1.3.6 Installing RubyGems 1.3.6 RubyGems 1.3.6 installed root@test:/usr/local: jgem list /usr/local/jruby/bin/jgem: line 8: require: command not found /usr/local/jruby/bin/jgem: line 9: require: command not found /usr/local/jruby/bin/jgem: line 10: require: command not found /usr/local/jruby/bin/jgem: line 12: required_version: command not found /usr/local/jruby/bin/jgem: line 14: unless: command not found /usr/local/jruby/bin/jgem: line 15: abort: command not found /usr/local/jruby/bin/jgem: line 16: end: command not found /usr/local/jruby/bin/jgem: line 18: args: command not found /usr/local/jruby/bin/jgem: line 20: begin: command not found /usr/local/jruby/bin/jgem: line 21: Gem::GemRunner.new.run: command not found /usr/local/jruby/bin/jgem: line 22: rescue: command not found /usr/local/jruby/bin/jgem: line 23: exit: e.exit_code: numeric argument required

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• Maximum page fetch with maximum bandwith

  - by Ehsan

  Hi I want to create an application like a spider I've implement fetching page as the following code in multi-thread application but there is two problem 1) I want to use my maximum bandwidth to send/receive request, how should I config my request to do so (Like Download Accelerator application and the like) cause I heard the normal application will use 66% of the available bandwidth. 2) I don't know what exactly HttpWebRequest.KeepAlive do, but as its name implies I think i can create a connection to a website and without closing the connection sending another request to that web site using existing connection. does it boost performance or Im wrong ?? public PageFetchResult Fetch() { PageFetchResult fetchResult = new PageFetchResult(); try { HttpWebRequest req = (HttpWebRequest)HttpWebRequest.Create(URLAddress); HttpWebResponse resp = (HttpWebResponse)req.GetResponse(); Uri requestedURI = new Uri(URLAddress); Uri responseURI = resp.ResponseUri; string resultHTML = ""; byte[] reqHTML = ResponseAsBytes(resp); if (!string.IsNullOrEmpty(FetchingEncoding)) resultHTML = Encoding.GetEncoding(FetchingEncoding).GetString(reqHTML); else if (!string.IsNullOrEmpty(resp.CharacterSet)) resultHTML = Encoding.GetEncoding(resp.CharacterSet).GetString(reqHTML); req.Abort(); resp.Close(); fetchResult.IsOK = true; fetchResult.ResultHTML = resultHTML; } catch (Exception ex) { fetchResult.IsOK = false; fetchResult.ErrorMessage = ex.Message; } return fetchResult; }

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• Grails Liferay portlet not invoking action

  - by RJ Regenold

  I am trying to create a simple portlet for Liferay 5.2.2 using Grails 1.2.1 with the grails-portlets 0.7 and grails-portlets-liferay 0.2 plugins. I created and deployed a stock portlet (just updated title, description, etc...). It deploys correctly and the view renders correctly. However, when I submit the default form that is in view.gsp it never hits the actionView function. Here are the relevant code bits: SearchPortlet.groovy class SearchPortlet { def title = 'Search' def description = ''' A simple search portlet. ''' def displayName = 'Search' def supports = ['text/html':['view', 'edit', 'help']] // Liferay server specific configurations def liferay_display_category = 'Category' def actionView = { println "In action view" } def renderView = { println "In render view" //TODO Define render phase. Return the map of the variables bound to the view ['mykey':'myvalue'] } ... } view.gsp <%@ taglib uri="http://java.sun.com/portlet" prefix="portlet" %> <div> <h1>View Page</h1> The map returned by renderView is passed in. Value of mykey: ${mykey} <form action="${portletResponse.createActionURL()}"> <input type="submit" value="Submit"/> </form> </div> The tomcat terminal prints In render view whenever I view the portlet, and after I press the submit button. It never prints the In action view statement. Any ideas? Update I turned on logging and this is what I see whenever I click the submit button in the portlet: [localhost].[/gportlet] - servletPath=/Search, pathInfo=/invoke, queryString=null, name=null [localhost].[/gportlet] - Path Based Include portlets.GrailsDispatcherPortlet - DispatcherPortlet with name 'Search' received render request portlets.GrailsDispatcherPortlet - Bound render request context to thread: com.liferay.portlet.RenderRequestImpl@7a158e portlets.GrailsDispatcherPortlet - Testing handler map [org.codehaus.grails.portlets.GrailsPortletHandlerMapping@1f06283] in DispatcherPortlet with name 'Search' portlets.GrailsDispatcherPortlet - Testing handler adapter [org.codehaus.grails.portlets.GrailsPortletHandlerAdapter@74f72b] portlets.GrailsPortletHandlerAdapter - portlet.handleMinimised not set, proceeding with normal render portlet.SearchPortlet - In render view portlets.GrailsPortletHandlerAdapter - Couldn't resolve action view /search/null.gsp portlets.GrailsPortletHandlerAdapter - Trying to render mode view /search/view.gsp portlets.GrailsDispatcherPortlet - Setting portlet response content type to view-determined type [text/html;charset=ISO-8859-1] [localhost].[/gportlet] - servletPath=/WEB-INF/servlet/view, pathInfo=null, queryString=null, name=null [localhost].[/gportlet] - Path Based Include portlets.GrailsDispatcherPortlet - Cleared thread-bound render request context: com.liferay.portlet.RenderRequestImpl@7a158e portlets.GrailsDispatcherPortlet - Successfully completed request The fourth line in that log snippet says Bound render request..., which I don't understand because the action in the form that is in the portlet is to the action url. I would've thought that should be an action request.

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• VS2010 Load Testing - Restricting ports

  - by marks-s

  As per the trouble shooting guide for VS2010 Load Testing (http://social.msdn.microsoft.com/Forums/en/vststest/thread/df043823-ffcf-46a4-9e47-1c4b8854ca13), I'm trying to restrict the range of ports used for client-controller communication. HKEY_LOCAL_MACHINE\SOFTWARE\MICROSOFT\VisualStudio\10.0\EnterpriseTools\QualityTools\ListenPortRange\PortRangeStart HKEY_LOCAL_MACHINE\SOFTWARE\MICROSOFT\VisualStudio\10.0\EnterpriseTools\QualityTools\ListenPortRange\PortRangeEnd I've set these keys on the client as described but according to netstat the client is still listening on random ports. The controller is attempting to communicate on the same random ports as the client. Anyone experienced the same?

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• How to use ResourceManager in a "website" mode ?

  - by Erick

  I am trying here to do a manual translation for the application I am working with. (There is already a working LocalizationModule but it's working dodgy, so I can't use <asp:Localize /> tags. Normally with ResourceManager you are supposed to be using it as Namespace.Folder.Resourcename (in an application). Currently I am translating an existing asp.net "website" (not web application so no namespace here....). The resources are located into a folder name "Locales/resources" which contains "fr-ca.resx" and "en-us.resx". So I used a code with something like this : public static string T(string search) { System.Resources.ResourceManager resMan = new System.Resources.ResourceManager( "Locales", System.Reflection.Assembly.GetExecutingAssembly(), null ); var text = resMan.GetString(search, System.Threading.Thread.CurrentThread.CurrentCulture); if (text == null) return "null"; else if (text == string.Empty) return "empty"; else return text; } and inside the page I have something like this <%= Locale.T("T_HOME") %> When I refresh I have this : Could not find any resources appropriate for the specified culture or the neutral culture. Make sure "Locales.resources" was correctly embedded or linked into assembly "App_Code.9yopn1f7" at compile time, or that all the satellite assemblies required are loadable and fully signed. Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code. Exception Details: System.Resources.MissingManifestResourceException: Could not find any resources appropriate for the specified culture or the neutral culture. Make sure "Locales.resources" was correctly embedded or linked into assembly "App_Code.9yopn1f7" at compile time, or that all the satellite assemblies required are loadable and fully signed. Source Error: Line 14: System.Resources.ResourceManager resMan = new System.Resources.ResourceManager( "Locales", System.Reflection.Assembly.GetExecutingAssembly(), null ); Line 15: Line 16: var text = resMan.GetString(search, System.Threading.Thread.CurrentThread.CurrentCulture); Line 17: Line 18: if (text == null) Source File: c:\inetpub\vhosts\galerieocarre.com\subdomains\dev\httpdocs\App_Code\Locale.cs Line: 16 I even tried to load the resource with Locales.fr-ca or only fr-ca nothing quite work here.

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• Error while launching soapUi 3.01

  - by Ayrad

  soapui.bat Exception in thread "main" java.lang.NoClassDefFoundError: org/apache/commons/cl i/CommandLineParser Where can I find this library? I already put JAVA HOME to my sdk and I am using windows XP. Any ideas how I can resolve this?

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• OpenCV and Cocoa error "Previous frame inner to this frame"

  - by moldov

  Hello every body! I'm playing with OpenCV in Cocoa program. When I try to call the method with some OpenCV code in the second thread I get "Previous frame inner to this frame (gdb could not unwind past this frame)"

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• How to delegate SwingWorker's publish to other methods

  - by Savvas Dalkitsis

  My "problem" can be described by the following. Assume we have an intensive process that we want to have running in the background and have it update a Swing JProgress bar. The solution is easy: import java.util.List; import javax.swing.JOptionPane; import javax.swing.JProgressBar; import javax.swing.SwingWorker; /** * @author Savvas Dalkitsis */ public class Test { public static void main(String[] args) { final JProgressBar progressBar = new JProgressBar(0,99); SwingWorker<Void, Integer> w = new SwingWorker<Void, Integer>(){ @Override protected void process(List<Integer> chunks) { progressBar.setValue(chunks.get(chunks.size()-1)); } @Override protected Void doInBackground() throws Exception { for (int i=0;i<100;i++) { publish(i); Thread.sleep(300); } return null; } }; w.execute(); JOptionPane.showOptionDialog(null, new Object[] { "Process", progressBar }, "Process", JOptionPane.OK_CANCEL_OPTION, JOptionPane.QUESTION_MESSAGE, null, null, null); } } Now assume that i have various methods that take a long time. For instance we have a method that downloads a file from a server. Or another that uploads to a server. Or anything really. What is the proper way of delegating the publish method to those methods so that they can update the GUI appropriately? What i have found so far is this (assume that the method "aMethod" resides in some other package for instance): import java.awt.event.ActionEvent; import java.util.List; import javax.swing.AbstractAction; import javax.swing.Action; import javax.swing.JOptionPane; import javax.swing.JProgressBar; import javax.swing.SwingWorker; /** * @author Savvas Dalkitsis */ public class Test { public static void main(String[] args) { final JProgressBar progressBar = new JProgressBar(0,99); SwingWorker<Void, Integer> w = new SwingWorker<Void, Integer>(){ @Override protected void process(List<Integer> chunks) { progressBar.setValue(chunks.get(chunks.size()-1)); } @SuppressWarnings("serial") @Override protected Void doInBackground() throws Exception { aMethod(new AbstractAction() { @Override public void actionPerformed(ActionEvent e) { publish((Integer)getValue("progress")); } }); return null; } }; w.execute(); JOptionPane.showOptionDialog(null, new Object[] { "Process", progressBar }, "Process", JOptionPane.OK_CANCEL_OPTION, JOptionPane.QUESTION_MESSAGE, null, null, null); } public static void aMethod (Action action) { for (int i=0;i<100;i++) { action.putValue("progress", i); action.actionPerformed(null); try { Thread.sleep(300); } catch (InterruptedException e) { e.printStackTrace(); } } } } It works but i know it lacks something. Any thoughts?

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• RDLC Report Viewer Drill Through Report

  - by Abhishek

  I had posted this question on MSDN Forum http://social.msdn.microsoft.com/Forums/en/vsreportcontrols/thread/f00e3406-354d-4f54-acce-7b7f0ad4c90f But I am not getting any response. Can you please help me. I am really stuck with this rather simple task. My code seems to be correct but still I get the A data source instance has not been supplied for the data source 'DataSet1_Order_Details'. Sorry for the cross post...

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• PHP - CURL vs fopen vs fsocketopen ?

  - by TatMing

  I would write a WordPress plugin to parse all image source and check it's broken link or not. My idea is : Select all post&page's images by regex from MySQL Navigate the image url and get the response header (404 ,403 error etc) print a report Since i don't need actual to download the binary file, so in performance ,compare in CURL , fopen , fsocketopen Which one is worst to use? And one more question, which method can execute in multi-thread?

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• How can I build multiple processes with TBB?

  - by Jackie

  Now I plan to parallelize my sequential solver. I hope I could run several copies of my solver(maybe with different parameters) in parallel simultaneously on a multi-core computer. can I do this with TBB? The reason I ask this question is that the book says: do not introduce anything in your code that will not allow single-thread execution. Any experts can explain this issue? Thanks.

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• Coredump in Multithreading Application in RHEL-5

  - by Chinnu

  I am working on multi-threading application it is dumping frequently.I could not able to analyaze the core.The core is showing like this Core was generated by 'thread-process'. Program terminated with signal 6, Aborted. #0 0x00000038f4e30045 in raise () from /lib64/libc.so.6 (gdb) where #0 0x00000038f4e30045 in raise () from /lib64/libc.so.6 #1 0x00000038f4e31ae0 in abort () from /lib64/libc.so.6 #2 0x00000038f4e681bb in __libc_message () from /lib64/libc.so.6 #3 0x00000038f4e72b96 in free () from /lib64/libc.so.6 #4 0x000000000046a137 in std::string::substr () #5 0x000000000042c549 in std::operator<< <char, std::char_traits<char>, std::allocator<char> > () #6 0x000000000042cc1d in std::operator<< <char, std::char_traits<char>, std::allocator<char> > () #7 0x000000000046b069 in std::string::substr () #8 0x000000000046c866 in std::string::substr () #9 0x0000000000431062 in std::operator<< <char, std::char_traits<char>, std::allocator<char> > () #10 0x00000038f5a062e7 in start_thread () from /lib64/libpthread.so.0 #11 0x00000038f4ece3bd in clone () from /lib64/libc.so.6

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• Unity to dispose of object

  - by Johan Levin

  Is there a way to make Unit dispose property-injected objects as part of the Teardown? The background is that I am working on an application that uses ASP.NET MVC 2, Unity and WCF. We have written our own MVC controller factory that uses unity to instantiate the controller and WCF proxies are injected using the [Dependency] attribute on public properties of the controller. At the end of the page life cycle the ReleaseController method of the controller factory is called and we call IUnityContainer.Teardown(theMvcController). At that point the controller is disposed as expected but I also need to dispose the injected wcf-proxies. (Actually I need to call Close and/or Abort on them and not Dispose but that is a later problem.) I could of course override the controllers' Dispose methods and clean up the proxies there, but I don't want the controllers to have to know about the lifecycles of the injected interfaces or even that they refer to WCF proxies. If I need to write code myself for this - what would be the best extension point? I'd appreciate any pointer.

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• Bulk inserts into sqlite db on the iphone...

  - by akaii

  I'm inserting a batch of 100 records, each containing a dictonary containing arbitrarily long HTML strings, and by god, it's slow. On the iphone, the runloop is blocking for several seconds during this transaction. Is my only recourse to use another thread? I'm already using several for acquiring data from HTTP servers, and the sqlite documentation explicitly discourages threading with the database, even though it's supposed to be thread-safe... Is there something I'm doing extremely wrong that if fixed, would drastically reduce the time it takes to complete the whole operation? NSString* statement; statement = @"BEGIN EXCLUSIVE TRANSACTION"; sqlite3_stmt *beginStatement; if (sqlite3_prepare_v2(database, [statement UTF8String], -1, &beginStatement, NULL) != SQLITE_OK) { printf("db error: %s\n", sqlite3_errmsg(database)); return; } if (sqlite3_step(beginStatement) != SQLITE_DONE) { sqlite3_finalize(beginStatement); printf("db error: %s\n", sqlite3_errmsg(database)); return; } NSTimeInterval timestampB = [[NSDate date] timeIntervalSince1970]; statement = @"INSERT OR REPLACE INTO item (hash, tag, owner, timestamp, dictionary) VALUES (?, ?, ?, ?, ?)"; sqlite3_stmt *compiledStatement; if(sqlite3_prepare_v2(database, [statement UTF8String], -1, &compiledStatement, NULL) == SQLITE_OK) { for(int i = 0; i < [items count]; i++){ NSMutableDictionary* item = [items objectAtIndex:i]; NSString* tag = [item objectForKey:@"id"]; NSInteger hash = [[NSString stringWithFormat:@"%@%@", tag, ownerID] hash]; NSInteger timestamp = [[item objectForKey:@"updated"] intValue]; NSData *dictionary = [NSKeyedArchiver archivedDataWithRootObject:item]; sqlite3_bind_int( compiledStatement, 1, hash); sqlite3_bind_text( compiledStatement, 2, [tag UTF8String], -1, SQLITE_TRANSIENT); sqlite3_bind_text( compiledStatement, 3, [ownerID UTF8String], -1, SQLITE_TRANSIENT); sqlite3_bind_int( compiledStatement, 4, timestamp); sqlite3_bind_blob( compiledStatement, 5, [dictionary bytes], [dictionary length], SQLITE_TRANSIENT); while(YES){ NSInteger result = sqlite3_step(compiledStatement); if(result == SQLITE_DONE){ break; } else if(result != SQLITE_BUSY){ printf("db error: %s\n", sqlite3_errmsg(database)); break; } } sqlite3_reset(compiledStatement); } timestampB = [[NSDate date] timeIntervalSince1970] - timestampB; NSLog(@"Insert Time Taken: %f",timestampB); // COMMIT statement = @"COMMIT TRANSACTION"; sqlite3_stmt *commitStatement; if (sqlite3_prepare_v2(database, [statement UTF8String], -1, &commitStatement, NULL) != SQLITE_OK) { printf("db error: %s\n", sqlite3_errmsg(database)); } if (sqlite3_step(commitStatement) != SQLITE_DONE) { printf("db error: %s\n", sqlite3_errmsg(database)); } sqlite3_finalize(beginStatement); sqlite3_finalize(compiledStatement); sqlite3_finalize(commitStatement);

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