LIE with Seam-managed transactions
Hello,
I somehow manage to get a LazyInitializationException when I use Seam-managed transactions.
What I want to do is retrieve an id from a request, load the usecase with said id and make it available to my jsf page - just like the dvd.xhtml in the dvd store example does for dvds.
When I use @Factory it works fine, but when I try to use page actions and @Out the usecase I get a LIE when it tries to access the first collection attribute (the application frame is generated with seam-gen and unmodified, I use Seam 1.1CR2 and JBoss AS 4.0.5).
My Bean:
@Stateful
@Name("usecasesBean")
public class UsecasesBean implements Usecases {
@PersistenceContext
private EntityManager em;
@In(required=false, scope=ScopeType.EVENT)
private String usecaseId;
@Out(required = false)
private Usecase usecase;
@DataModel
List<Usecase> usecases;
@SuppressWarnings("unchecked")
@Factory("usecases")
public void findAllUsecases() {
System.out.println("findAllUsecases...");
System.out.println("usecaseId: " + usecaseId);
usecases = (List<Usecase>) em.createQuery("Select u from Usecase u order by u.name").getResultList();
}
public void loadUsecaseById() {
System.out.println("loadById...");
if(usecaseId == null) {
System.out.println("usecaseId was null");
usecaseId = "1";
}
this.usecase = em.find(Usecase.class, Long.parseLong(usecaseId));
System.out.println("Usecase: " + usecase.getName());
}
// @Factory("usecase")
// public Usecase loadUsecaseById() {
// System.out.println("loadById...");
// if(usecaseId == null) {
// System.out.println("usecaseId was null");
// usecaseId = "1";
// }
// return em.find(Usecase.class, Long.parseLong(usecaseId));
// }
}My pages.xml:
<pages>
<page view-id="/showUsecase.xhtml" action="#{usecasesBean.loadUsecaseById}" />
</pages>TransactionalSeamPhaseListener is loaded in faces-config.xml.
When I exchange the loadUsecaseById() methods, comment the @Out usecase out and remove the pages.xml this works fine but the way above I get the following exception:
01:35:21,631 INFO [STDOUT] findAllUsecases... 01:35:21,635 INFO [STDOUT] usecaseId: null 01:35:21,667 INFO [STDOUT] Hibernate: select usecase0_.ID as ID210_, usecase0_.summary as summary210_, usecase0_.standardWorkflow as standard7_210_, usecase0_.name as name210_, usecase0_.priority as priority210_, usecase0_.version as version210_, usecase0_.status as status210_ from Usecase usecase0_ order by usecase0_.name 01:35:23,555 INFO [STDOUT] Filtering URL ... 01:35:23,567 INFO [STDOUT] loadById... 01:35:23,570 INFO [STDOUT] Hibernate: select usecase0_.ID as ID210_0_, usecase0_.summary as summary210_0_, usecase0_.standardWorkflow as standard7_210_0_, usecase0_.name as name210_0_, usecase0_.priority as priority210_0_, usecase0_.version as version210_0_, usecase0_.status as status210_0_ from Usecase usecase0_ where usecase0_.ID=? 01:35:23,583 INFO [STDOUT] Usecase: Login User 01:35:23,635 ERROR [LazyInitializationException] failed to lazily initialize a collection of role: com.example.usecases.model.Usecase.actors, no session or session was closed org.hibernate.LazyInitializationException: failed to lazily initialize a collection of role: com.example.usecases.model.Usecase.actors, no session or session was closed at org.hibernate.collection.AbstractPersistentCollection.throwLazyInitializationException(AbstractPersistentCollection.java:358) at org.hibernate.collection.AbstractPersistentCollection.throwLazyInitializationExceptionIfNotConnected(AbstractPersistentCollection.java:350) at org.hibernate.collection.AbstractPersistentCollection.readSize(AbstractPersistentCollection.java:97) at org.hibernate.collection.PersistentBag.size(PersistentBag.java:225) at javax.faces.model.ListDataModel.isRowAvailable(ListDataModel.java:84) at javax.faces.model.ListDataModel.setRowIndex(ListDataModel.java:97) at javax.faces.model.ListDataModel.setWrappedData(ListDataModel.java:111) at javax.faces.model.ListDataModel.<init>(ListDataModel.java:42) at com.sun.facelets.component.UIRepeat.getDataModel(UIRepeat.java:127) at com.sun.facelets.component.UIRepeat.setIndex(UIRepeat.java:305) at com.sun.facelets.component.UIRepeat.process(UIRepeat.java:333) at com.sun.facelets.component.UIRepeat.encodeChildren(UIRepeat.java:617) at com.sun.facelets.tag.jsf.ComponentSupport.encodeRecursive(ComponentSupport.java:234) at com.sun.facelets.tag.jsf.ComponentSupport.encodeRecursive(ComponentSupport.java:239) at com.sun.facelets.FaceletViewHandler.renderView(FaceletViewHandler.java:580) at org.apache.myfaces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:384) at javax.faces.webapp.FacesServlet.service(FacesServlet.java:138) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173) at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:672) at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:463) at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:398) at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:301) at com.example.usecases.web.UrlRewriteFilter.doFilter(UrlRewriteFilter.java:60) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173) at org.jboss.seam.servlet.SeamRedirectFilter.doFilter(SeamRedirectFilter.java:32) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173) at org.jboss.seam.servlet.SeamExceptionFilter.doFilter(SeamExceptionFilter.java:46) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173) at org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:96) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:178) at org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.java:175) at org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:74) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:126) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105) at org.jboss.web.tomcat.tc5.jca.CachedConnectionValve.invoke(CachedConnectionValve.java:156) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:107) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148) at org.apache.coyote.http11.Http11AprProcessor.process(Http11AprProcessor.java:833) at org.apache.coyote.http11.Http11AprProtocol$Http11ConnectionHandler.process(Http11AprProtocol.java:639) at org.apache.tomcat.util.net.AprEndpoint$Worker.run(AprEndpoint.java:1285) at java.lang.Thread.run(Thread.java:595) 01:35:23,640 ERROR [STDERR] 07.12.2006 01:35:23 com.sun.facelets.FaceletViewHandler handleRenderException SCHWERWIEGEND: Error Rendering View[/showUsecase.xhtml] org.hibernate.LazyInitializationException: failed to lazily initialize a collection of role: com.example.usecases.model.Usecase.actors, no session or session was closed at org.hibernate.collection.AbstractPersistentCollection.throwLazyInitializationException(AbstractPersistentCollection.java:358) at org.hibernate.collection.AbstractPersistentCollection.throwLazyInitializationExceptionIfNotConnected(AbstractPersistentCollection.java:350) at org.hibernate.collection.AbstractPersistentCollection.readSize(AbstractPersistentCollection.java:97) at org.hibernate.collection.PersistentBag.size(PersistentBag.java:225) at javax.faces.model.ListDataModel.isRowAvailable(ListDataModel.java:84) at javax.faces.model.ListDataModel.setRowIndex(ListDataModel.java:97) at javax.faces.model.ListDataModel.setWrappedData(ListDataModel.java:111) at javax.faces.model.ListDataModel.<init>(ListDataModel.java:42) at com.sun.facelets.component.UIRepeat.getDataModel(UIRepeat.java:127) at com.sun.facelets.component.UIRepeat.setIndex(UIRepeat.java:305) at com.sun.facelets.component.UIRepeat.process(UIRepeat.java:333) at com.sun.facelets.component.UIRepeat.encodeChildren(UIRepeat.java:617) at com.sun.facelets.tag.jsf.ComponentSupport.encodeRecursive(ComponentSupport.java:234) at com.sun.facelets.tag.jsf.ComponentSupport.encodeRecursive(ComponentSupport.java:239) at com.sun.facelets.FaceletViewHandler.renderView(FaceletViewHandler.java:580) at org.apache.myfaces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:384) at javax.faces.webapp.FacesServlet.service(FacesServlet.java:138) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173) at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:672) at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:463) at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:398) at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:301) at com.example.usecases.web.UrlRewriteFilter.doFilter(UrlRewriteFilter.java:60) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173) at org.jboss.seam.servlet.SeamRedirectFilter.doFilter(SeamRedirectFilter.java:32) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173) at org.jboss.seam.servlet.SeamExceptionFilter.doFilter(SeamExceptionFilter.java:46) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173) at org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:96) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:178) at org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.java:175) at org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:74) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:126) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105) at org.jboss.web.tomcat.tc5.jca.CachedConnectionValve.invoke(CachedConnectionValve.java:156) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:107) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148) at org.apache.coyote.http11.Http11AprProcessor.process(Http11AprProcessor.java:833) at org.apache.coyote.http11.Http11AprProtocol$Http11ConnectionHandler.process(Http11AprProtocol.java:639) at org.apache.tomcat.util.net.AprEndpoint$Worker.run(AprEndpoint.java:1285) at java.lang.Thread.run(Thread.java:595) 01:35:23,676 ERROR [LazyInitializationException] could not initialize proxy - the owning Session was closed org.hibernate.LazyInitializationException: could not initialize proxy - the owning Session was closed at org.hibernate.proxy.AbstractLazyInitializer.initialize(AbstractLazyInitializer.java:60) at org.hibernate.proxy.AbstractLazyInitializer.getImplementation(AbstractLazyInitializer.java:111) at org.hibernate.proxy.pojo.javassist.JavassistLazyInitializer.invoke(JavassistLazyInitializer.java:198) at com.example.usecases.model.Workflow_$$_javassist_87.getWorkflowSteps(Workflow_$$_javassist_87.java) 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.apache.myfaces.el.PropertyResolverImpl.getProperty(PropertyResolverImpl.java:438) at org.apache.myfaces.el.PropertyResolverImpl.getValue(PropertyResolverImpl.java:82) at com.sun.facelets.el.LegacyELContext$LegacyELResolver.getValue(LegacyELContext.java:141) at com.sun.el.parser.AstValue.getValue(AstValue.java:117) at com.sun.el.ValueExpressionImpl.getValue(ValueExpressionImpl.java:192) at com.sun.facelets.el.TagValueExpression.getValue(TagValueExpression.java:71) at com.sun.facelets.el.LegacyValueBinding.getValue(LegacyValueBinding.java:56) at com.sun.facelets.component.UIRepeat.getValue(UIRepeat.java:143) 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 com.sun.facelets.util.DevTools.writeAttributes(DevTools.java:240) at com.sun.facelets.util.DevTools.writeStart(DevTools.java:284) at com.sun.facelets.util.DevTools.writeComponent(DevTools.java:189) at com.sun.facelets.util.DevTools.writeComponent(DevTools.java:207) at com.sun.facelets.util.DevTools.debugHtml(DevTools.java:107) at com.sun.facelets.FaceletViewHandler.handleRenderException(FaceletViewHandler.java:677) at com.sun.facelets.FaceletViewHandler.renderView(FaceletViewHandler.java:646) at org.apache.myfaces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:384) at javax.faces.webapp.FacesServlet.service(FacesServlet.java:138) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173) at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:672) at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:463) at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:398) at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:301) at com.example.usecases.web.UrlRewriteFilter.doFilter(UrlRewriteFilter.java:60) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173) at org.jboss.seam.servlet.SeamRedirectFilter.doFilter(SeamRedirectFilter.java:32) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173) at org.jboss.seam.servlet.SeamExceptionFilter.doFilter(SeamExceptionFilter.java:46) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173) at org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:96) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:178) at org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.java:175) at org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:74) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:126) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105) at org.jboss.web.tomcat.tc5.jca.CachedConnectionValve.invoke(CachedConnectionValve.java:156) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:107) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148) at org.apache.coyote.http11.Http11AprProcessor.process(Http11AprProcessor.java:833) at org.apache.coyote.http11.Http11AprProtocol$Http11ConnectionHandler.process(Http11AprProtocol.java:639) at org.apache.tomcat.util.net.AprEndpoint$Worker.run(AprEndpoint.java:1285) at java.lang.Thread.run(Thread.java:595)
As you can see the page function is action is correctly called and the usecase is loaded from the db but I get a LIE when I access the first collection attribute (actors.) in my jsf.
Can someone please explain me why this happens.
Thanks a lot in advance.
