Using TopLink with SCM

Hi!
I was working with my .mw file with OSCM source control instead of appear this error:
"An unexpected error has occurred.We are sorry for the inconvenience.
Messagge:
EXCEPTION DESCRIPTION: File already exists: [C:\Documents and Settings\mpedretti.DSI\Mis documentos\DocumentosToplink\Carpeta nueva\Table\Nueva 2.xml]
Stack trace:
Throwable Class Name:
oracle.toplink.xml.XMLDataStoreException
Message:
EXCEPTION DESCRIPTION: File already exists: [C:\Documents and Settings\mpedretti.DSI\Mis documentos\DocumentosToplink\Carpeta nueva\Table\Nueva 2.xml]
Stack trace:
LOCAL EXCEPTION STACK:
EXCEPTION [TOPLINK-13005] (TopLink - 9.0.3 (Build 423)): oracle.toplink.xml.XMLDataStoreException
EXCEPTION DESCRIPTION: File already exists: [C:\Documents and Settings\mpedretti.DSI\Mis documentos\DocumentosToplink\Carpeta nueva\Table\Nueva 2.xml]
     at oracle.toplink.xml.XMLDataStoreException.fileAlreadyExists(Unknown Source)
     at oracle.toplink.xml.XMLFileStreamPolicy.getWriteStream(Unknown Source)
     at oracle.toplink.xml.XMLFileStreamPolicy.getNewWriteStream(Unknown Source)
     at oracle.toplink.xml.XMLFileAccessor.getNewWriteStream(Unknown Source)
     at oracle.toplink.xml.XMLAccessorStreamPolicy.getNewWriteStream(Unknown Source)
     at oracle.toplink.xml.XMLInsertCall.getWriteStream(Unknown Source)
     at oracle.toplink.xml.XMLWriteCall.execute(Unknown Source)
     at oracle.toplink.sdk.SDKAccessor.executeCall(Unknown Source)
     at oracle.toplink.publicinterface.UnitOfWork.executeCall(Unknown Source)
     at oracle.toplink.sdk.SDKQueryMechanism.executeCall(Unknown Source)
     at oracle.toplink.sdk.SDKQueryMechanism.executeNoSelectCalls(Unknown Source)
     at oracle.toplink.sdk.SDKQueryMechanism.insertObject(Unknown Source)
     at oracle.toplink.internal.queryframework.DatabaseQueryMechanism.insertObjectForWrite(Unknown Source)
     at oracle.toplink.queryframework.InsertObjectQuery.executeCommit(Unknown Source)
     at oracle.toplink.internal.queryframework.DatabaseQueryMechanism.performUserDefinedWrite(Unknown Source)
     at oracle.toplink.internal.queryframework.DatabaseQueryMechanism.performUserDefinedInsert(Unknown Source)
     at oracle.toplink.internal.queryframework.DatabaseQueryMechanism.insertObjectForWrite(Unknown Source)
     at oracle.toplink.queryframework.WriteObjectQuery.executeCommit(Unknown Source)
     at oracle.toplink.internal.queryframework.DatabaseQueryMechanism.executeWrite(Unknown Source)
     at oracle.toplink.queryframework.WriteObjectQuery.execute(Unknown Source)
     at oracle.toplink.queryframework.DatabaseQuery.execute(Unknown Source)
     at oracle.toplink.publicinterface.Session.internalExecuteQuery(Unknown Source)
     at oracle.toplink.publicinterface.UnitOfWork.internalExecuteQuery(Unknown Source)
     at oracle.toplink.publicinterface.Session.executeQuery(Unknown Source)
     at oracle.toplink.publicinterface.Session.executeQuery(Unknown Source)
     at oracle.toplink.internal.sessions.CommitManager.commitAllObjects(Unknown Source)
     at oracle.toplink.publicinterface.Session.writeAllObjects(Unknown Source)
     at oracle.toplink.publicinterface.UnitOfWork.commitToDatabase(Unknown Source)
     at oracle.toplink.publicinterface.UnitOfWork.commitRootUnitOfWork(Unknown Source)
     at oracle.toplink.publicinterface.UnitOfWork.commitAndResume(Unknown Source)
     at oracle.toplink.workbench.ui.BldrSession.saveProject(Unknown Source)
     at oracle.toplink.workbench.ui.BldrMainView.saveProject(Unknown Source)
     at oracle.toplink.workbench.ui.BldrMainView.saveSelectedProjects(Unknown Source)
     at oracle.toplink.workbench.ui.BldrActionManager$104.actionPerformed(Unknown Source)
     at javax.swing.AbstractButton.fireActionPerformed(Unknown Source)
     at javax.swing.AbstractButton$ForwardActionEvents.actionPerformed(Unknown Source)
     at javax.swing.DefaultButtonModel.fireActionPerformed(Unknown Source)
     at javax.swing.DefaultButtonModel.setPressed(Unknown Source)
     at javax.swing.AbstractButton.doClick(Unknown Source)
     at javax.swing.plaf.basic.BasicMenuItemUI$MouseInputHandler.mouseReleased(Unknown Source)
     at java.awt.AWTEventMulticaster.mouseReleased(Unknown Source)
     at java.awt.Component.processMouseEvent(Unknown Source)
     at java.awt.Component.processEvent(Unknown Source)
     at java.awt.Container.processEvent(Unknown Source)
     at java.awt.Component.dispatchEventImpl(Unknown Source)
     at java.awt.Container.dispatchEventImpl(Unknown Source)
     at java.awt.Component.dispatchEvent(Unknown Source)
     at java.awt.LightweightDispatcher.retargetMouseEvent(Unknown Source)
     at java.awt.LightweightDispatcher.processMouseEvent(Unknown Source)
     at java.awt.LightweightDispatcher.dispatchEvent(Unknown Source)
     at java.awt.Container.dispatchEventImpl(Unknown Source)
     at java.awt.Window.dispatchEventImpl(Unknown Source)
     at java.awt.Component.dispatchEvent(Unknown Source)
     at java.awt.EventQueue.dispatchEvent(Unknown Source)
     at java.awt.EventDispatchThread.pumpOneEventForHierarchy(Unknown Source)
     at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)
     at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
     at java.awt.EventDispatchThread.run(Unknown Source)
This happen when I tried to save the project. Any suggestion??
What are the best practices to apply SCM using Toplink?
Thanks!!
Matias

Whenever this happens you should be able to do a "file>save as" and save the project in a new directory -- at least you won't be loosing your work.
Basically I think the problem is either that somehow you corrupted the project with checkin/checkout process, or you did not check out a file that the Mapping Workbench is trying to update when you save the project.
10g Mapping Workbench, I have heard, is going to have more intelligence in the area and note ahead of time which files need to be checked out when you save your project. I think a developer preview will be available any day now, keep your eyes peeled to the OTN webpage for TopLink.
The mapping workbench reference guide has a couple pages that talk about how to use it with SCM systems. In TopLink 903 these docs are shipped with TopLink. See page 1-11 for more info.

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Problem using Toplink with JUnit

Hi,
I have a problem using Toplink with JUnit. Method under test is very simple: it use a static EntityManager object to open a transaction and persists data to db. When I invoke the method from a test method, it gives me the exception:
java.lang.AssertionError
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     at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
     at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
     at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
     at java.lang.reflect.Method.invoke(Unknown Source)
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Where is the problem???
Regards,
Valerio

EntityFacade class is very simple and it uses a static EntityManager object. Here the code:
public class EntityFacade {
     private static EntityManager em = Persistence.createEntityManagerFactory("ElectroManager").createEntityManager();
     private static Logger logger=Logger.getLogger(EntityFacade.class);
     public static void insertCliente(Cliente c)
          logger.debug("Inserisco cliente nel db: " + c);
          em.getTransaction().begin();
          c.setId(getNextIdForTable("Cliente"));
          em.persist(c);
          em.getTransaction().commit();
If I call the method from inside a main it works well, so I think the problem is not the classpath neither the URL in the persistence.xml. However the URL is:
<property name="toplink.jdbc.url" value="jdbc:derby:c:/programmi/ElectroManager/db/electroManager"/>
I use the latest build version of TopLink.
Thanks.

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I'm still at a loss with this. Rather than worry about the older version, for now, I just want to see JPA in action. So, I've decided on just running the Spring 2.5.6 petclinic example out of the samples folder. When I try to do this, after only tweaking the web.xml to use the applicationContext-jpa.xml file, the application does not initialize properly. Here's the stack trace I get:
Target URL -- http://192.168.0.2:8988/petclinic/index.jsp
09/05/11 23:26:05 Oracle Containers for J2EE 10g (10.1.3.4.0) initialized
WARNING: Code-source C:\javalib\spring-2.5.6\samples\petclinic\war\WEB-INF\lib\connector.jar (from WEB-INF/lib/ directory in C:\javalib\spring-2.5.6\samples\petclinic\war\WEB-INF\lib) has the same filename but is not identical to /C:/jdev10134/j2ee/home/lib/connector.jar (from <code-source> (ignore manifest Class-Path) in META-INF/boot.xml in C:\jdev10134\j2ee\home\oc4j.jar). If it contains different versions of the same classes, it will be masked as the latter is already visible in the search path of loader current-workspace-app.web.petclinic:0.0.0.
WARNING: Code-source C:\javalib\spring-2.5.6\samples\petclinic\war\WEB-INF\lib\jta.jar (from WEB-INF/lib/ directory in C:\javalib\spring-2.5.6\samples\petclinic\war\WEB-INF\lib) has the same filename but is not identical to /C:/jdev10134/j2ee/home/lib/jta.jar (from <code-source> (ignore manifest Class-Path) in META-INF/boot.xml in C:\jdev10134\j2ee\home\oc4j.jar). If it contains different versions of the same classes, it will be masked as the latter is already visible in the search path of loader current-workspace-app.web.petclinic:0.0.0.
WARNING: Code-source C:\javalib\spring-2.5.6\samples\petclinic\war\WEB-INF\lib\persistence.jar (from WEB-INF/lib/ directory in C:\javalib\spring-2.5.6\samples\petclinic\war\WEB-INF\lib) has the same filename but is not identical to /C:/jdev10134/j2ee/home/lib/persistence.jar (from <code-source> (ignore manifest Class-Path) in META-INF/boot.xml in C:\jdev10134\j2ee\home\oc4j.jar). If it contains different versions of the same classes, it will be masked as the latter is already visible in the search path of loader current-workspace-app.web.petclinic:0.0.0.
WARNING: Code-source C:\javalib\spring-2.5.6\samples\petclinic\war\WEB-INF\lib\toplink-essentials.jar (from WEB-INF/lib/ directory in C:\javalib\spring-2.5.6\samples\petclinic\war\WEB-INF\lib) has the same filename but is not identical to /C:/jdev10134/toplink/jlib/toplink-essentials.jar (from <code-source> in /C:/jdev10134/jdev/system/oracle.j2ee.10.1.3.42.70/embedded-oc4j/config/server.xml). If it contains different versions of the same classes, it will be masked as the latter is already visible in the search path of loader current-workspace-app.web.petclinic:0.0.0.
09/05/11 23:26:24 log4j: Parsing for [root] with value=[INFO, stdout].
09/05/11 23:26:24 log4j: Level token is [INFO].
09/05/11 23:26:24 log4j: Category root set to INFO
09/05/11 23:26:24 log4j: Parsing appender named "stdout".
09/05/11 23:26:24 log4j: Parsing layout options for "stdout".
09/05/11 23:26:24 log4j: Setting property [conversionPattern] to [%d %p [%c] - <%m>%n].
09/05/11 23:26:24 log4j: End of parsing for "stdout".
09/05/11 23:26:24 log4j: Parsed "stdout" options.
09/05/11 23:26:24 log4j: Parsing for [org.springframework.samples.petclinic.aspects] with value=[DEBUG].
09/05/11 23:26:24 log4j: Level token is [DEBUG].
09/05/11 23:26:24 log4j: Category org.springframework.samples.petclinic.aspects set to DEBUG
09/05/11 23:26:24 log4j: Handling log4j.additivity.org.springframework.samples.petclinic.aspects=[null]
09/05/11 23:26:24 log4j: Finished configuring.
09/05/11 23:26:24 log4j: Reading configuration from URL file:/C:/javalib/spring-2.5.6/samples/petclinic/war/WEB-INF/classes/log4j.properties
09/05/11 23:26:24 log4j: Parsing for [root] with value=[INFO, stdout].
09/05/11 23:26:24 log4j: Level token is [INFO].
09/05/11 23:26:24 log4j: Category root set to INFO
09/05/11 23:26:24 log4j: Parsing appender named "stdout".
09/05/11 23:26:24 log4j: Parsing layout options for "stdout".
09/05/11 23:26:24 log4j: Setting property [conversionPattern] to [%d %p [%c] - <%m>%n].
09/05/11 23:26:24 log4j: End of parsing for "stdout".
09/05/11 23:26:24 log4j: Parsed "stdout" options.
09/05/11 23:26:24 log4j: Parsing for [org.springframework.samples.petclinic.aspects] with value=[DEBUG].
09/05/11 23:26:24 log4j: Level token is [DEBUG].
09/05/11 23:26:24 log4j: Category org.springframework.samples.petclinic.aspects set to DEBUG
09/05/11 23:26:24 log4j: Handling log4j.additivity.org.springframework.samples.petclinic.aspects=[null]
09/05/11 23:26:24 log4j: Finished configuring.
2009-05-11 23:26:24,593 INFO [org.springframework.web.context.ContextLoader] - <Root WebApplicationContext: initialization started>
2009-05-11 23:26:24,687 INFO [org.springframework.web.context.support.XmlWebApplicationContext] - <Refreshing org.springframework.web.context.support.XmlWebApplicationContext@eeb406: display name [Root WebApplicationContext]; startup date [Mon May 11 23:26:24 EDT 2009]; root of context hierarchy>
2009-05-11 23:26:24,828 INFO [org.springframework.beans.factory.xml.XmlBeanDefinitionReader] - <Loading XML bean definitions from ServletContext resource [WEB-INF/applicationContext-jpa.xml]>
2009-05-11 23:26:25,281 INFO [org.springframework.web.context.support.XmlWebApplicationContext] - <Bean factory for application context [org.springframework.web.context.support.XmlWebApplicationContext@eeb406]: org.springframework.beans.factory.support.DefaultListableBeanFactory@1da817b>
2009-05-11 23:26:25,734 INFO [org.springframework.beans.factory.config.PropertyPlaceholderConfigurer] - <Loading properties file from class path resource [jdbc.properties]>
2009-05-11 23:26:25,796 INFO [org.springframework.context.weaving.DefaultContextLoadTimeWeaver] - <Determined server-specific load-time weaver: org.springframework.instrument.classloading.oc4j.OC4JLoadTimeWeaver>
2009-05-11 23:26:28,296 INFO [org.springframework.web.context.support.XmlWebApplicationContext] - <Bean 'org.springframework.orm.jpa.vendor.TopLinkJpaVendorAdapter#c25ae3' is not eligible for getting processed by all BeanPostProcessors (for example: not eligible for auto-proxying)>
2009-05-11 23:26:28,359 INFO [org.springframework.web.context.support.XmlWebApplicationContext] - <Bean 'dataSource' is not eligible for getting processed by all BeanPostProcessors (for example: not eligible for auto-proxying)>
2009-05-11 23:26:28,437 INFO [org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean] - <Building JPA container EntityManagerFactory for persistence unit 'PetClinic'>
2009-05-11 23:26:28,468 INFO [org.springframework.web.context.support.XmlWebApplicationContext] - <Bean 'entityManagerFactory' is not eligible for getting processed by all BeanPostProcessors (for example: not eligible for auto-proxying)>
2009-05-11 23:26:28,562 INFO [org.springframework.beans.factory.support.DefaultListableBeanFactory] - <Pre-instantiating singletons in org.springframework.beans.factory.support.DefaultListableBeanFactory@1da817b: defining beans [org.springframework.context.weaving.AspectJWeavingEnabler#0,org.springframework.context.config.internalBeanConfigurerAspect,loadTimeWeaver,org.springframework.beans.factory.config.PropertyPlaceholderConfigurer#0,dataSource,entityManagerFactory,transactionManager,org.springframework.context.annotation.internalPersistenceAnnotationProcessor,org.springframework.context.annotation.internalCommonAnnotationProcessor,org.springframework.context.annotation.internalAutowiredAnnotationProcessor,org.springframework.context.annotation.internalRequiredAnnotationProcessor,org.springframework.transaction.config.internalTransactionAspect,org.springframework.samples.petclinic.aspects.UsageLogAspect#0,org.springframework.dao.annotation.PersistenceExceptionTranslationPostProcessor#0,clinic]; root of factory hierarchy>
2009-05-11 23:26:29,671 INFO [org.springframework.web.context.ContextLoader] - <Root WebApplicationContext: initialization completed in 5078 ms>
2009-05-11 23:26:29,734 INFO [org.springframework.web.servlet.DispatcherServlet] - <FrameworkServlet 'petclinic': initialization started>
2009-05-11 23:26:29,734 INFO [org.springframework.web.context.support.XmlWebApplicationContext] - <Refreshing org.springframework.web.context.support.XmlWebApplicationContext@c00e55: display name [WebApplicationContext for namespace 'petclinic-servlet']; startup date [Mon May 11 23:26:29 EDT 2009]; parent: org.springframework.web.context.support.XmlWebApplicationContext@eeb406>
2009-05-11 23:26:29,734 INFO [org.springframework.beans.factory.xml.XmlBeanDefinitionReader] - <Loading XML bean definitions from ServletContext resource [WEB-INF/petclinic-servlet.xml]>
2009-05-11 23:26:30,171 INFO [org.springframework.web.context.support.XmlWebApplicationContext] - <Bean factory for application context [org.springframework.web.context.support.XmlWebApplicationContext@c00e55]: org.springframework.beans.factory.support.DefaultListableBeanFactory@1c5543b>
2009-05-11 23:26:30,375 INFO [org.springframework.beans.factory.support.DefaultListableBeanFactory] - <Pre-instantiating singletons in org.springframework.beans.factory.support.DefaultListableBeanFactory@1c5543b: defining beans [addOwnerForm,addPetForm,addVisitForm,clinicController,editOwnerForm,editPetForm,findOwnersForm,org.springframework.context.annotation.internalPersistenceAnnotationProcessor,org.springframework.context.annotation.internalCommonAnnotationProcessor,org.springframework.context.annotation.internalAutowiredAnnotationProcessor,org.springframework.context.annotation.internalRequiredAnnotationProcessor,org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter#0,org.springframework.web.servlet.handler.SimpleMappingExceptionResolver#0,org.springframework.web.servlet.view.InternalResourceViewResolver#0,messageSource]; parent: org.springframework.beans.factory.support.DefaultListableBeanFactory@1da817b>
2009-05-11 23:26:31,828 INFO [org.springframework.web.servlet.DispatcherServlet] - <FrameworkServlet 'petclinic': initialization completed in 2094 ms>
May 11, 2009 11:26:58 PM oracle.toplink.essentials.session.file:/C:/javalib/spring-2.5.6/samples/petclinic/war/WEB-INF/classes/-PetClinic.transaction
WARNING: PersistenceUnitInfo PetClinic has transactionType RESOURCE_LOCAL and therefore jtaDataSource will be ignored
May 11, 2009 11:26:58 PM oracle.toplink.essentials.session.file:/C:/javalib/spring-2.5.6/samples/petclinic/war/WEB-INF/classes/-PetClinic
INFO: TopLink, version: Oracle TopLink Essentials - 2.0.1 (Build b09d-fcs (12/06/2007))
May 11, 2009 11:26:58 PM oracle.toplink.essentials.session.file:/C:/javalib/spring-2.5.6/samples/petclinic/war/WEB-INF/classes/-PetClinic
INFO: Server: unknown
May 11, 2009 11:26:58 PM oracle.toplink.essentials.session.file:/C:/javalib/spring-2.5.6/samples/petclinic/war/WEB-INF/classes/-PetClinic.connection
CONFIG: connecting(DatabaseLogin(
        platform=>EssentialsHSQLPlatformWithNativeSequence
        user name=> ""
        connector=>JNDIConnector datasource name=>null
May 11, 2009 11:27:03 PM oracle.toplink.essentials.session.file:/C:/javalib/spring-2.5.6/samples/petclinic/war/WEB-INF/classes/-PetClinic
SEVERE:
Local Exception Stack:
Exception [TOPLINK-4002] (Oracle TopLink Essentials - 2.0.1 (Build b09d-fcs (12/06/2007))): oracle.toplink.essentials.exceptions.DatabaseException
Internal Exception: java.sql.SQLException: Io exception: The Network Adapter could not establish the connection
Error Code: 17002
        at oracle.toplink.essentials.exceptions.DatabaseException.sqlException(DatabaseException.java:305)
        at oracle.toplink.essentials.jndi.JNDIConnector.connect(JNDIConnector.java:150)
        at oracle.toplink.essentials.sessions.DatasourceLogin.connectToDatasource(DatasourceLogin.java:184)
        at oracle.toplink.essentials.internal.databaseaccess.DatasourceAccessor.connect(DatasourceAccessor.java:233)
        at oracle.toplink.essentials.internal.databaseaccess.DatabaseAccessor.connect(DatabaseAccessor.java:242)
        at oracle.toplink.essentials.internal.databaseaccess.DatasourceAccessor.connect(DatasourceAccessor.java:309)
        at oracle.toplink.essentials.threetier.ConnectionPool.buildConnection(ConnectionPool.java:117)
        at oracle.toplink.essentials.threetier.ExternalConnectionPool.startUp(ExternalConnectionPool.java:135)
        at oracle.toplink.essentials.threetier.ServerSession.connect(ServerSession.java:451)
        at oracle.toplink.essentials.internal.sessions.DatabaseSessionImpl.login(DatabaseSessionImpl.java:616)
        at oracle.toplink.essentials.ejb.cmp3.EntityManagerFactoryProvider.login(EntityManagerFactoryProvider.java:282)
        at oracle.toplink.essentials.internal.ejb.cmp3.EntityManagerSetupImpl.deploy(EntityManagerSetupImpl.java:229)
        at oracle.toplink.essentials.internal.ejb.cmp3.base.EntityManagerFactoryImpl.getServerSession(EntityManagerFactoryImpl.java:93)
        at oracle.toplink.essentials.internal.ejb.cmp3.base.EntityManagerFactoryImpl.createEntityManagerImpl(EntityManagerFactoryImpl.java:126)
        at oracle.toplink.essentials.internal.ejb.cmp3.base.EntityManagerFactoryImpl.createEntityManagerImpl(EntityManagerFactoryImpl.java:120)
        at oracle.toplink.essentials.internal.ejb.cmp3.EntityManagerFactoryImpl.createEntityManager(EntityManagerFactoryImpl.java:91)
        at org.springframework.orm.jpa.JpaTransactionManager.createEntityManagerForTransaction(JpaTransactionManager.java:392)
        at org.springframework.orm.jpa.JpaTransactionManager.doBegin(JpaTransactionManager.java:320)
        at org.springframework.transaction.support.AbstractPlatformTransactionManager.getTransaction(AbstractPlatformTransactionManager.java:374)
        at org.springframework.transaction.interceptor.TransactionAspectSupport.createTransactionIfNecessary(TransactionAspectSupport.java:263)
        at org.springframework.transaction.interceptor.TransactionAspectSupport.createTransactionIfNecessary(TransactionAspectSupport.java:220)
        at org.springframework.transaction.aspectj.AbstractTransactionAspect.ajc$before$org_springframework_transaction_aspectj_AbstractTransactionAspect$1$2a73e96c(AbstractTransactionAspect.aj:63)
        at org.springframework.samples.petclinic.jpa.EntityManagerClinic.getVets(EntityManagerClinic.java:39)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
        at java.lang.reflect.Method.invoke(Method.java:585)
        at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:307)
        at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:182)
        at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:149)
        at org.springframework.dao.support.PersistenceExceptionTranslationInterceptor.invoke(PersistenceExceptionTranslationInterceptor.java:138)
        at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171)
        at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:204)
        at $Proxy19.getVets(Unknown Source)
        at org.springframework.samples.petclinic.web.ClinicController.vetsHandler(ClinicController.java:53)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
        at java.lang.reflect.Method.invoke(Method.java:585)
        at org.springframework.web.bind.annotation.support.HandlerMethodInvoker.doInvokeMethod(HandlerMethodInvoker.java:421)
        at org.springframework.web.bind.annotation.support.HandlerMethodInvoker.invokeHandlerMethod(HandlerMethodInvoker.java:136)
        at org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter.invokeHandlerMethod(AnnotationMethodHandlerAdapter.java:326)
        at org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter.handle(AnnotationMethodHandlerAdapter.java:313)
        at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:875)
        at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:807)
        at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:571)
        at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:501)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:743)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:856)
        at com.evermind.server.http.ServletRequestDispatcher.invoke(ServletRequestDispatcher.java:713)
        at com.evermind.server.http.ServletRequestDispatcher.forwardInternal(ServletRequestDispatcher.java:370)
        at com.evermind.server.http.HttpRequestHandler.doProcessRequest(HttpRequestHandler.java:871)
        at com.evermind.server.http.HttpRequestHandler.processRequest(HttpRequestHandler.java:453)
        at com.evermind.server.http.HttpRequestHandler.serveOneRequest(HttpRequestHandler.java:221)
        at com.evermind.server.http.HttpRequestHandler.run(HttpRequestHandler.java:122)
        at com.evermind.server.http.HttpRequestHandler.run(HttpRequestHandler.java:111)
        at oracle.oc4j.network.ServerSocketReadHandler$SafeRunnable.run(ServerSocketReadHandler.java:260)
        at oracle.oc4j.network.ServerSocketAcceptHandler.procClientSocket(ServerSocketAcceptHandler.java:234)
        at oracle.oc4j.network.ServerSocketAcceptHandler.access$700(ServerSocketAcceptHandler.java:29)
        at oracle.oc4j.network.ServerSocketAcceptHandler$AcceptHandlerHorse.run(ServerSocketAcceptHandler.java:879)
        at com.evermind.util.ReleasableResourcePooledExecutor$MyWorker.run(ReleasableResourcePooledExecutor.java:303)
        at java.lang.Thread.run(Thread.java:595)
Caused by: java.sql.SQLException: Io exception: The Network Adapter could not establish the connection
        at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:138)
        at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:175)
        at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:287)
        at oracle.jdbc.driver.T4CConnection.logon(T4CConnection.java:328)
        at oracle.jdbc.driver.PhysicalConnection.<init>(PhysicalConnection.java:430)
        at oracle.jdbc.driver.T4CConnection.<init>(T4CConnection.java:151)
        at oracle.jdbc.driver.T4CDriverExtension.getConnection(T4CDriverExtension.java:32)
        at oracle.jdbc.driver.OracleDriver.connect(OracleDriver.java:608)
        at oracle.jdbc.pool.OracleDataSource.getConnection(OracleDataSource.java:218)
        at oracle.jdbc.pool.OracleConnectionPoolDataSource.getPhysicalConnection(OracleConnectionPoolDataSource.java:114)
        at oracle.jdbc.pool.OracleConnectionPoolDataSource.getPooledConnection(OracleConnectionPoolDataSource.java:77)
        at oracle.jdbc.pool.OracleImplicitConnectionCache.makeCacheConnection(OracleImplicitConnectionCache.java:1361)
        at oracle.jdbc.pool.OracleImplicitConnectionCache.getCacheConnection(OracleImplicitConnectionCache.java:441)
        at oracle.jdbc.pool.OracleImplicitConnectionCache.getConnection(OracleImplicitConnectionCache.java:336)
        at oracle.jdbc.pool.OracleDataSource.getConnection(OracleDataSource.java:286)
        at oracle.jdbc.pool.OracleDataSource.getConnection(OracleDataSource.java:179)
        at oracle.jdbc.pool.OracleDataSource.getConnection(OracleDataSource.java:159)
        at oracle.oc4j.sql.DataSourceConnectionPoolDataSource.getPooledConnection(DataSourceConnectionPoolDataSource.java:57)
        at oracle.oc4j.sql.xa.EmulatedXADataSource.getXAConnection(EmulatedXADataSource.java:92)
        at oracle.oc4j.sql.spi.ManagedConnectionFactoryImpl.createXAConnection(ManagedConnectionFactoryImpl.java:211)
        at oracle.oc4j.sql.spi.ManagedConnectionFactoryImpl.createManagedConnection(ManagedConnectionFactoryImpl.java:170)
        at com.evermind.server.connector.ApplicationConnectionManager.createManagedConnection(ApplicationConnectionManager.java:1398)
        at oracle.j2ee.connector.ConnectionPoolImpl.createManagedConnectionFromFactory(ConnectionPoolImpl.java:327)
        at oracle.j2ee.connector.ConnectionPoolImpl.access$800(ConnectionPoolImpl.java:98)
        at oracle.j2ee.connector.ConnectionPoolImpl$NonePoolingScheme.getManagedConnection(ConnectionPoolImpl.java:1211)
        at oracle.j2ee.connector.ConnectionPoolImpl.getManagedConnection(ConnectionPoolImpl.java:785)
        at oracle.oc4j.sql.ConnectionPoolImpl.getManagedConnection(ConnectionPoolImpl.java:45)
        at com.evermind.server.connector.ApplicationConnectionManager.getConnectionFromPool(ApplicationConnectionManager.java:1596)
        at com.evermind.server.connector.ApplicationConnectionManager.acquireConnectionContext(ApplicationConnectionManager.java:1541)
        at com.evermind.server.connector.ApplicationConnectionManager.allocateConnection(ApplicationConnectionManager.java:1486)
        at oracle.j2ee.connector.OracleConnectionManager.unprivileged_allocateConnection(OracleConnectionManager.java:238)
        at oracle.j2ee.connector.OracleConnectionManager.allocateConnection(OracleConnectionManager.java:192)
        at oracle.oc4j.sql.ManagedDataSource.getConnection(ManagedDataSource.java:272)
        at oracle.oc4j.sql.ManagedDataSource.getConnection(ManagedDataSource.java:200)
        at oracle.oc4j.sql.ManagedDataSource.getConnection(ManagedDataSource.java:142)
        at oracle.oc4j.sql.ManagedDataSource.getConnection(ManagedDataSource.java:127)
        at oracle.toplink.essentials.jndi.JNDIConnector.connect(JNDIConnector.java:145)
        ... 60 moreAny ideas? I'd really like to see JPA, Spring and oc4j working together?
Thanks,
Eric

Need advise for best practice when using Toplink with external transaction

Hello;
Our project is trying to switch from Toplink control transaction to using External transaction so we can make database operation and JMS operation within a single transaction.
Some of our team try out the Toplink support for external transaction and come up with the following initial recommendation.
Since we are not familar with using external transaction, I would like member of this forum and experts, to help comment on whether these recommendation are indeed valid or in line with the best practice. And for folks that have done this in their project, what did you do ?
Any help will be most appreciated.
Data Access Objects must be enhanced to support reading from a TOPLink unit of work when using an external transaction controller. Developers must consider what impact a global transaction will have on the methods in their data access objects (DAOs).
The following findSomeObject method is representative of a finder in the current implementation of our DAOs. It is not especially designed to execute in the context of a global transaction, nor read from a unit of work.
public findSomeObject(ILoginUser aUser, Expression queryExpression)
ClientSession clientSession = getClientSession(aUser);
SomeObject obj = null;
try
ReadObjectQuery readObjectQuery = new ReadObjectQuery(SomeObject.class);
readObjectQuery.setSelectionCriteria(queryExpression);
obj = (SomeObject)clientSession.executeQuery(readObjectQuery);
catch (DatabaseException dbe)
// throw an appropriate exception
finally
clientSession.release();
if (obj == null)
// throw an appropriate exception
return obj;
However, after making the following changes (in blue) the findSomeObject method will now read from a unit of work while executing in the context of a global transaction.
public findSomeObject(ILoginUser aUser, Expression queryExpression)
Session session = getClientSession(aUser);
SomeObject obj = null;
try
ReadObjectQuery readObjectQuery = new ReadObjectQuery(SomeObject.class);
readObjectQuery.setSelectionCriteria(queryExpression);
if (TransactionController.getInstance().useExternalTransactionControl())
     session = session.getActiveUnitOfWork();
     readObjectQuery.conformResultsInUnitOfWork(); }
obj = (SomeObject)session.executeQuery(readObjectQuery);
catch (DatabaseException dbe)
// throw an appropriate exception
finally
if (TransactionController.getInstance().notUseExternalTransactionControl())
     session.release();
if (obj == null)
// throw an appropriate exception
return obj;
When getting the TOPLink client session and reading from the unit of work in the context of a global transaction, new objects need to be cached.
public getUnitOfWork(ILoginUser aUser)
throws DataAccessException
     ClientSession clientSession = getClientSession(aUser);
     UnitOfWork uow = null;
     if (TransactionController.getInstance().useExternalTransactionControl())
          uow = clientSession.getActiveUnitOfWork();
          uow.setShouldNewObjectsBeCached(true);     }
     else
          uow = clientSession.acquireUnitOfWork();
     return uow;
}

As it generally is with this sort of question there is no exact answer.
The only required update when working with an External Transaction is that getActiveUnitOfWork() is called instead of acquireUnitOfWork() other than that the semantics of the calls and when you use a UnitOfWork is still dependant on the requirements of your application. For instance I noticed that originally the findSomeObject method did not perform a transactional read (no UnitOfWork). Has the requirements for this method changed? If they have not then there is still no need to perform a transactional read, and the method would not need to change.
As for the requirement that new object be cached this is only required if you are not conforming the transactional queries and adds a slight performance boost for find by primary key queries. In order to use this however, objects must be assigned primary keys by the application before they are registered in the UnitOfWork.
--Gordon

Using Toplink with Eclipse - (Newbie question)

If you have (for instance):
* a blank Dynacmic Web Project in Eclipse
* and you have a Workbench Toplink project- say an XML or Database project.
Then you have to save your Toplink project, which spurts out various directories e.g. classes, descriptors, schemas, fooname.mwp etc.
Where do you save this in your Java project - is it at /src? Or someplace else?
I am asking this question because I am having problems when debugging my application - certain xml files cannot be found etc. Anyway I guess I just need to find out if I am getting the basics right for now - so any help will be much appreciated.
PS - Why can't I find a simple tutorial/example showing Eclipse and Toplink - it's all JDeveloper and Ant builds and ahhhhhghghhhgh!

golcarlad,
Hi, try the following EclipseLink JPA examples and tutorials for SE and EE environments - oriented around the Eclipse 3.4 IDE (ant capable but WTP ready)
With these you will be able to fully debug your JPA application both on and off any application server.
If you are still deploying your WAR to Tomcat then the following tutorial on running EclipseLink JPA on Tomcat 6 will help you out. Put your additional orm.xml file alongside persistence.xml if you are using functionality beyond standard JPA.
http://wiki.eclipse.org/EclipseLink/Examples/JPA/Tomcat_Web_Tutorial
From
Help on creating a ServerSession in Eclipse with XML file
"In particular note that there are two META-INF directories - we want to use only the one off of src.
"Make sure that your persistence.xml (and optionaly orm.xml) file is placed off of the src/META-INF directory and not the default WebContent/META-INF dir so that it gets picked up by the servlet classloader from the classes directory."
Other Tutorials:
http://wiki.eclipse.org/EclipseLink/Examples
http://wiki.eclipse.org/EclipseLink/Examples/JPA
http://wiki.eclipse.org/EclipseLink/Examples/JPA/EmployeeXML
http://wiki.eclipse.org/EclipseLink/Examples/JPA/Dynamic
http://wiki.eclipse.org/EclipseLink/Examples/JPA#JPA_Web_Application_Tutorials
http://wiki.eclipse.org/EclipseLink/Examples/JPA/WebLogic_Web_Tutorial
http://wiki.eclipse.org/EclipseLink/Examples/JPA/OC4J_Web_Tutorial
http://wiki.eclipse.org/EclipseLink/Examples/JPA/JBoss_Web_Tutorial
thank you
/michael
Edited by: michael_obrien on Mar 19, 2009 9:19 AM

Using Toplink with Oracle Spatial (missing right parenthesis error)

Hi,
I always get the following error when I try to create spatial query with toplink.
Internal Exception: java.sql.SQLException: ORA-00907: missing right parenthesis
Any idea ? Also, there is no trace of my point in the generated sql....
Here is the generated query:
SELECT ID, [...]
FROM QUEBEC_CITY
WHERE (MDSYS.SDO_NN(GEOMETRY, JGeometry (gtype=1, dim=2, rid=8307, NULL) = 'TRUE')
ORDER BY ID ASC
Here is my code... :
double[] coord = new double[]{-71.25163d, 46.8527d};
JGeometry point = JGeometry.createPoint(coord, 2, 8307);
SpatialOperator nearestNeighbor = SpatialOperator.nearestNeighbor(session);
ReadAllQuery query = new ReadAllQuery(UrbanEdgeDescriptor.class);
ExpressionBuilder eb = query.getExpressionBuilder();
Expression geom = eb.get("geometry");
query.setSelectionCriteria(nearestNeighbor.buildExpression(geom, point));
query.addAscendingOrdering("id");
List<UrbanEdgeDescriptor> results = (List)db.getSession().executeQuery(query);
System.out.println(results!=null);

The problem is the toString() on JGeometry. It does not print out a complete description the database can use inline. It produces:
JGeometry (gtype=1, dim=2, rid=8307
To get JGeometry types to work in your queries the easiest solution is to use parameter binding so the literal representation is not used.
Doug

Using Toplink with Servlets in a Clustered application server

I am having some problems with Toplink.
Basically, I have a collection of HttpServlets that manipulate a domain object and its various collections of objects. The general technique is to place the domain object in the HttpSession, and have each Servlet modify this object by retrieving it, modifying it, and storing it when necessary. The problem is that since this application is running in a clustered environment, the object in the session may or may not be the same object returned from Toplink. It may be a serialized clone of the object from another server on the cluster.
This has caused several problems. First, if I am using indirction for the collections, when the domain object is deserializaed, it throws an exception when it tries to instantiate the indirection. Next, when trying to store the object, it is not registered with a unit of work, and I am not sure how to properly account for this. Third, there is a many to many relationship. The user may pick one such object, and add it to the domain object being manipulated. This seems to cause problems when the object is read from Toplink, and added to the domain object that is a serialized clone.
Anyway, my question is, what is the general pattern for handling an object being manipulated on a HttpSession in a clustered environment, where this object(s) may or may not be the actual objects returned from Toplink? My goal is to have a factory return one DatabaseSession per cluster server, and be able to load, store, and manipulate these objects in the HttpSession.
Here is an attempt at code:
import java.io.*;
import java.util.*;
import oracle.toplink.expressions.*;
import oracle.toplink.sessions.*;
public class DataAccess
private static Project project = new MyToplinkProject();
private static DatabaseSession session;
private UnitOfWork unit;
public DataAccess()
unit = getDatabaseSession().acquireUnitOfWork();
public ArrayList getAllCustomers()
Vector v = (Vector) session.readAllObjects(Customer.class);
return new ArrayList(v);
public Customer getCustomerForUpdate(Customer c)
Customer custCopy = (Customer) unit.readObject(c);
return (Customer) unit.registerObject(c);
public Form getCustomer(String id)
ExpressionBuilder builder = new ExpressionBuilder();
Expression exp = builder.get("id").equal(id);
return (Customer) session.readObject(Customer.class, exp);
public void saveCustomer(Customer cust)
unit.deepMergeClone(cust);
unit.commitAndResume();
private synchronized DatabaseSession getDatabaseSession()
if (session == null)
session = project.createDatabaseSession();
session.login();
session.setLog(new PrintWriter(System.out));
session.logMessages();
return session;
public void destruct()
release();
public void release()
unit.release();
session.release();
Anyway, from this code I hope you can see what I am trying to do. The basic idea is that a Customer object provided for store and update may or may not be a serialized copy. Also, the object returned from a read may be serialized before the indirction is attempted.
Thanks for any help,
Jason Wilson

Hi Jason
A single static DatabaseSession and a single static UnitOfWork is not the recommended way of working with TopLink from a servlet. Our recommendation is that you create a single ServerSession object and that every time a servlet needs to interact with a TopLink Session, the servlet first acquires a ClientSession from this ServerSession object and possibly acquires UnitOfWork from the ClientSession. A UnitOfWork is not intended to be shared by servlets, or by different clients.
Basically, what you're attempting to do with the DatabaseSession is something we would recommend that you do instead with a ServerSession/ClientSessions combination.
As for working with persistent objects that you store in an HttpSession, I will try to give you some relevant background. First off, the UnitOfWork is intended to be used to manage the changes to a set of objects in a SINGLE TRANSACTION. It is always much easier to manage if these transactions are short-lived (ie if there is one transaction per ServletRequest.
However, the fact that you are talking about storing objects in the HttpSession makes me think that you are also considering long-running transactions that are may be spread out over several ServletRequests. You should definately consider this decision very carefully. If you want to continually edit an object that is stored in the HttpSession, then we need to consider how to manage when the object's changes should be committed to the database and how to manage concurrency when two users have the same object in their respective HttpSession objects.
One idea is not to store the actual object in the HttpSession but instead to store the "id" of the object (something that you can use to find the correct object when the same user makes another request). So servlets always:
-acquireClientSession
-find the object that they are working with (based on information in the HttpSession)
-if the object is to be edited then a UnitOfWork provides clones of the object (this isolates you from changes that some other user makes to the same object)
-at the end, commit the changes to the object.
When the user makes another request, the object they read will have their changes. So, functionally, this is the same as storing the actual object in the HttpSession, except TopLink can provide proper ACID behavior for any updates that you decide to make. And don't worry about the added "expense" of having to query at the beginning of each servlet request; if you are storing the "id" of the object in your HttpSession, then you a simple cache hit is all that is required to get back the correct object. You don't have to go the database at all.
JIM

Using TopLink with ADF?

I've downloaded the JDeveloper 10g preview, and I'm interested in the provided ADF features. The online Help says "When you want to create ADF application clients that work with other business services, including... TopLink mappings... see the available documentation on the JDeveloper page of OTN", but I don't see this documentation? Is it available yet? If so, could someone please post a link?
Thanks!

Duh, sorry, that "more" link sure is helpful...
http://technet.oracle.com/products/jdev/collateral/tutorials/9050/toplinkdatabinding_tut.html

Using Toplink with JSF

This kind of crosses the boundaries of 2 forms. And since I'm not getting much response over in JDev perhaps this forums residents could help shed some light on the problem:
Updating Toplink objects with JSF

Thanks for bringing the thread to my attention. Keeping an eye on all the forums is challenging and occasionally we miss TopLink specific questions in the other forums. I have posted a response looking for more information on the original thread.
Doug

How to implement the pessimistic locking using toplink with sybase

we want to allocate the unique primary key to each row when many user try to insert the records concurrently..So what we are trying to do is we calculate the maximum of Primary Key and incremented it by 1. Now we want to Apply the locking concept on the so that unique key will be allocated to each newly inserted row
Can you please tell me
1. how we can genrate unique primary key in toplink using sybase?
2.how to implement the pessimistic or optimistic locking ?which one will be preferable?

Hi brother
I think that this link can help you
http://download-east.oracle.com/docs/cd/A97688_16/toplink.903/b10064/database.htm#1007986
Good luck

Using XI with SCM ICH

Hi All,
I'm designing an interface to post VMI orders (EDI 852)to SCM ICH via XI. Since I am very new to SCM, trying to understand how the data gets posted to ICH. We are sending XML messages, but are IDoc's or BAPI's used to actually post the data. Where does the data actually 'live'?
Thanks,
Maura

Hi Maura,
the new way to send data to SAP via XI are Proxies. So there are no IDocs or RFCs in the backend SCM but Proxies. If you know the message interface from XI, you can locate the Proxy in transaction SPROXY of your SCM system (by component and namespace). Behind that proxy is a piece of ABAP which takes care of the inbound processing. Proxies can be monitored via transaction SXI_MONITOR in the receiving system, so that would be similar to the IDoc monitor in IDOc processing.
Regards
Christine

Use of TopLink with EntityBeans

Hi,
In one of my applications, they have used TopLink with Entity Beans. Can any one tell me what's use of toplink here.(I think it's for Object relational mapping). As of now we want to get rid of toplink. What could be the alternative.
Thanks.

Why would you want to get rid of TopLink? Are you having some issues or are just unaware of the benefits of using a top of the class ORM provider like TopLink? TopLink is a robust, mature and very scallable framework with a large, active and approachable community.
--Gordon

NoSuchElementException when using sequence table in Toplink with Oracle 9i

Hi,
UnitOfWork(11608452)--Connection(15933498)--UPDATE SEQUENCE SET SEQ_COUNT = SEQ_COUNT + 1000 WHERE SEQ_NAME = 'ABN_NOTIF_SEQ'
UnitOfWork(11608452)--Connection(15933498)--SELECT SEQ_COUNT FROM SEQUENCE WHERE SEQ_NAME = 'ABN_NOTIF_SEQ'
ClientSession(17794660)--Connection(15933498)--commit transaction
java.util.NoSuchElementException
     at java.lang.Throwable.fillInStackTrace(Native Method)
     at java.lang.Throwable.fillInStackTrace(Compiled Code)
     at java.lang.Throwable.<init>(Compiled Code)
     at java.lang.Exception.<init>(Compiled Code)
     at java.lang.RuntimeException.<init>(Compiled Code)
     at java.util.NoSuchElementException.<init>(NoSuchElementException.java:35)
     at java.util.Vector.firstElement(Compiled Code)
     at TOPLink.Private.DatabaseAccess.DatabasePlatform.sequenceTableGetSequenceNumberNamed(Compiled Code)
     at TOPLink.Private.DatabaseAccess.DatabasePlatform.getSequenceNumberNamed(Compiled Code)
     at TOPLink.Public.PublicInterface.Session.getNextSequenceNumberValue(Compiled Code)
     at TOPLink.Public.PublicInterface.UnitOfWork.getNextSequenceNumberValue(Compiled Code)
     at TOPLink.Private.Descriptors.ObjectBuilder.assignSequenceNumber(Compiled Code)
This is the error I am getting occasionally. I am using Toplink with custom sequence table and pre-allocation size is 1000.
Can you Please advise me on this problem.
Thanks in Advance,
Durga

hello,
i m using msync for synchronization on Pocket PC 2003 with eVB. I dont know about msyncCom.
i have mentioned a part of my code where the problem is found.
rsmastbl.Open tblnm, conn, adOpenKeyset, adLockOptimistic
MsgBox tblnm & " opened"
'get the key fields to be compared in the query to get required record
MsgBox rsmastbl.Fields(1).name
keyfldnm1 = rsmastbl.Fields(1).name
MsgBox "keyfldnm got value = " & keyfldnm1
rsmastbl.Close
MsgBox "keyfldnm got value = " & keyfldnm1
Now here the value of keyfldnm1 before closing the record set is found to be correct.
But the message box after closing the record set shows no value in the keyfldnm1.
its very urgent....
if anybody can help me
thanx

Toplink with sql server

I have sucessfully used Toplink with Oracle. ow I have to use it with MS SQL server and I am having problems. First of all, in the Mapping Worbench, the only SQL server driver listed is weblogic.jdbc.mssqlserver4.Driver. Why can't I use the regular ms sql driver, com.microsoft.jdbc.sqlserver.SQLServerDriver? Why should the mapping workbench be tied to Weblogic? If one did not have Weblogic, would it be impossible to use Toplink with SQL server? Well, I have Weblogic, so I tried using the weblogic driver with the url jdbc:microsoft:sqlserver://<host ip>:1433;DatabaseName=<db name>. When I try to connect, a dialog box appears that says: "java.sql.SQLException $$$$$$$$$$ License Exception $$$$$$$$$$ Missing license for: WebLogic Server 6.1. $$$$$$$$$$ License Exception $$$$$$$$$$ Username or password could be invalid." I have weblogic.jar in the classpath. I tried adding the line SET WLS61_HOME=M:\bea610\wlserver6.1 to workbench.cmd. It didn't help. Any suggestions?

I already tried this. It does not work. I put the following jars in the classpath in workbench.cmd: msbase.jar;mssqlserver.jar;msutil.jar. Then I start workbench. When I try to enter com.microsoft.jdbc.sqlserver.SQLServerDriver as the driver, I get an exception. Here is the stacktrace:
Exception occurred during event dispatching:
java.lang.ClassCastException: com.webgain.openapi.foundation.uitools.WGDefaultListModel
     at com.webgain.workbench.ui.db.BldrLoginInfoPanel.actionPerformed(Unknown Source)
     at com.webgain.openapi.foundation.uitools.WGListChooser.fireActionEvent(WGListChooser.java:664)
     at com.webgain.openapi.foundation.uitools.WGListChooser$ListDataHandler.contentsChanged(WGListChooser.java:473)
     at javax.swing.AbstractListModel.fireContentsChanged(Unknown Source)
     at com.webgain.openapi.foundation.uitools.WGDefaultListModel.setSelectedItem(WGDefaultListModel.java:740)
     at com.webgain.openapi.foundation.uitools.WGListChooser.setSelectedItem(WGListChooser.java:1446)
     at com.webgain.openapi.foundation.plaf.basic.WGBasicListChooserUI$ListChooserModel.setSelectedItem(WGBasicListChooserUI.java:527)
     at javax.swing.JComboBox.actionPerformed(Unknown Source)
     at javax.swing.plaf.basic.BasicComboBoxUI$EditorFocusListener.focusLost(Unknown Source)
     at java.awt.AWTEventMulticaster.focusLost(Unknown Source)
     at java.awt.AWTEventMulticaster.focusLost(Unknown Source)
     at java.awt.Component.processFocusEvent(Unknown Source)
     at javax.swing.JComponent.processFocusEvent(Unknown Source)
     at java.awt.Component.processEvent(Unknown Source)
     at java.awt.Container.processEvent(Unknown Source)
     at java.awt.Component.dispatchEventImpl(Unknown Source)
     at java.awt.Container.dispatchEventImpl(Unknown Source)
     at java.awt.Component.dispatchEvent(Unknown Source)
     at java.awt.LightweightDispatcher.setFocusRequest(Unknown Source)
     at java.awt.Container.proxyRequestFocus(Unknown Source)
     at java.awt.Container.proxyRequestFocus(Unknown Source)
     at java.awt.Container.proxyRequestFocus(Unknown Source)
     at java.awt.Container.proxyRequestFocus(Unknown Source)
     at java.awt.Container.proxyRequestFocus(Unknown Source)
     at java.awt.Container.proxyRequestFocus(Unknown Source)
     at java.awt.Container.proxyRequestFocus(Unknown Source)
     at java.awt.Container.proxyRequestFocus(Unknown Source)
     at java.awt.Component.requestFocus(Unknown Source)
     at javax.swing.JComponent.grabFocus(Unknown Source)
     at javax.swing.JComponent.requestFocus(Unknown Source)
     at javax.swing.text.DefaultCaret.mousePressed(Unknown Source)
     at java.awt.AWTEventMulticaster.mousePressed(Unknown Source)
     at java.awt.AWTEventMulticaster.mousePressed(Unknown Source)
     at java.awt.AWTEventMulticaster.mousePressed(Unknown Source)
     at java.awt.Component.processMouseEvent(Unknown Source)
     at com.webgain.openapi.foundation.uitools.WGPasswordField.processMouseEvent(WGPasswordField.java:99)
     at java.awt.Component.processEvent(Unknown Source)
     at java.awt.Container.processEvent(Unknown Source)
     at java.awt.Component.dispatchEventImpl(Unknown Source)
     at java.awt.Container.dispatchEventImpl(Unknown Source)
     at java.awt.Component.dispatchEvent(Unknown Source)
     at java.awt.LightweightDispatcher.retargetMouseEvent(Unknown Source)
     at java.awt.LightweightDispatcher.processMouseEvent(Unknown Source)
     at java.awt.LightweightDispatcher.dispatchEvent(Unknown Source)
     at java.awt.Container.dispatchEventImpl(Unknown Source)
     at java.awt.Window.dispatchEventImpl(Unknown Source)
     at java.awt.Component.dispatchEvent(Unknown Source)
     at java.awt.EventQueue.dispatchEvent(Unknown Source)
     at java.awt.EventDispatchThread.pumpOneEventForHierarchy(Unknown Source)
     at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)
     at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
     at java.awt.EventDispatchThread.run(Unknown Source)
If I ignore the exception and try to connect to the database anyway, it tries to use the weblogic driver.
Next I manually edited the database xml file and put in the driver name automatically. When I bought up the mapping workbench again, it again threw an exception. However, the correct driver name was in the file, so it did finally let me connect to the database. So it seems there IS a bug, although it has to do with the GUI and not SQL server per se.

Updating a persons name using toplink uow

Hi,
I am having problems updating the name of a PERSON. I am using Toplink with a SessionBeanFacade.
I am using a Backing Bean, which is calling the Session Bean Facade. I was debugging the code and the strange thing is: I can see the updated name in the entity and in the uow, but after uow.commit the updated name isn't in the database. Why won't the values from the uow persist?
SESSION BEAN FACADE
public Object mergeEntity(Object entity) {
    UnitOfWork uow = getSessionFactory().acquireUnitOfWork();
    Object workingCopy = uow.readObject(entity);
    if (workingCopy == null)
      throw new RuntimeException("Could not find entity to update");
    uow.deepMergeClone(entity);
    uow.commit();
    return workingCopy;
BACKING BEAN
public void recoverBusinesspartner(ActionEvent actionEvent) {
    DCBindingContainer dcBind = (DCBindingContainer)getBindings();
    DCIteratorBinding iterBind = (DCIteratorBinding)dcBind.get("personIterator");
    iterBind.getCurrentRow().setAttribute("name", "Bodhy");
    dcBind.getOperationBinding("mergeEntity").execute();
}Thank you
Bodhy
Edited by: Bodhy on 30.09.2008 06:02
P.S. I don't get any errors or some other message in my log. I am using JDeveloper 11g TP3

Hello,
Glad you found the problem. As I mentioned in my previous post, you should not be modifying objects from the session cache. When you do any sort of query on a session other than a UnitOfWork, the objects returned exist in the shared session cache. When you register an object, the state of the object is pulled from the session cache and used for a comparison - TopLink will think that is the state the database is in.
This is why Detach resolves the issue- it makes a copy of the object so that changes to it do not get put into the cached copy.
I would recommend looking at:
http://www.oracle.com/technology/products/ias/toplink/doc/1013/main/_html/cachun001.htm
and
http://www.oracle.com/technology/products/ias/toplink/technical/unitOfWorkWP.pdf
to see how caching and the UOW work in TopLink
Best Regards,
Chris

Using TopLink with SCM

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