[jboss-user] [JBoss Seam] - Seam-injected EntityManager, but still LazyInitializationExc
dmacbride
do-not-reply at jboss.com
Mon Jul 23 22:44:54 EDT 2007
Hi,
I'm getting a hibernate LazyInitializationException in one of my Session beans. What is really confusing me is the bean has access to a Seam-injected EntityManager instance that seems to work.
In the following code listing, the error occurs when calling "this.listOfTracksInThisRequest = request.getTracks()" in the getDefectsForThisRequest() method. Note that just above I am accessing the EntityManager in the call fixmgmtEntityManager.merge(request).
/*
| *-------------------------------------------------------------------
| * IBM Confidential
| * OCO Source Materials
| *
| * WebSphere Commerce
| *
| * (c) Copyright International Business Machines Corporation. 2007
| * All rights reserved.
| *
| * The source code for this program is not published or otherwise
| * divested of its trade secrets, irrespective of what has been
| * deposited with the US Copyright Office.
| *-------------------------------------------------------------------
| */
| /**
| *
| */
| package my.application.fixmgmt.model.actions;
|
| import java.io.Serializable;
| import java.util.Set;
|
| import javax.ejb.Local;
| import javax.ejb.Remove;
| import javax.ejb.Stateful;
| import javax.persistence.EntityManager;
|
| import org.hibernate.validator.InvalidStateException;
| import org.hibernate.validator.InvalidValue;
| import org.jboss.seam.ScopeType;
| import org.jboss.seam.annotations.Create;
| import org.jboss.seam.annotations.Destroy;
| import org.jboss.seam.annotations.Factory;
| import org.jboss.seam.annotations.In;
| import org.jboss.seam.annotations.Logger;
| import org.jboss.seam.annotations.Name;
| import org.jboss.seam.annotations.Out;
| import org.jboss.seam.annotations.Scope;
| import org.jboss.seam.annotations.datamodel.DataModel;
| import org.jboss.seam.annotations.datamodel.DataModelSelection;
| import org.jboss.seam.log.Log;
|
| import my.application.fixmgmt.model.Request;
| import my.application.fixmgmt.model.Track;
|
| /**
| * @author Lucas Brodzinski
| *
| */
| @Local
| @Stateful
| public class displayRequestPageEditStatusAction implements displayRequestPageEditStatus,Serializable {
|
| @In EntityManager fixmgmtEntityManager; //where fixmgmtEntityManager is defined in components.xml
|
| @In @Out
| private Request request;
|
| /** The request object as stored in the database before any modification is done to it. We
| * keep a copy of this so we can determine what changes where made to the bean after the "save"
| * button is hit.*/
| private Request initialRequest;
|
| @DataModel
| private Set<Track> listOfTracksInThisRequest;
|
| @DataModelSelection
| @Out(required=false)
| private Track track;
|
| @Logger
| private Log log;
|
| public void editButtonClickAction()
| {
| log.info("editButtonClickAction: start");
| this.initialRequest = Request.copyRequest((Request)fixmgmtEntityManager.createQuery("select request1 from Request request1 where request1.id in ('" + this.request.getId() + "')").getResultList().get(0));
| log.info("Retrived initial request with id: " + this.initialRequest.getId());
| log.info("editButtonClickAction: end");
| }
|
| public String saveButtonClickAction()
| {
| log.info("saveButtonClickAction: start");
| this.auditReportImpl();
| try {
| fixmgmtEntityManager.merge(request);
| fixmgmtEntityManager.flush();
| } catch (InvalidStateException ise) {
| log.info("InvalidStateException.getMessage = " + ise.getMessage());
| InvalidValue theInvalidValues[] = ise.getInvalidValues();
| for(int i=0; i <theInvalidValues.length; i++) {
| log.info("InvalidValue.getMessage = " + theInvalidValues.getMessage());
| }
| ise.printStackTrace();
| }
| log.info("saveButtonClickAction: end");
| return "main";
| }
|
| public void auditReportImpl()
| {
| log.info("auditReportImpl: start");
| String auditTrail = this.request.getAuditTrail();
| if(!this.initialRequest.getProblemAbstract().equals(this.request.getProblemAbstract()))
| {
| auditTrail = auditTrail + "\nProblem abstract changed from: \"" + this.initialRequest.getProblemAbstract() + "\" to \"" + this.request.getProblemAbstract() + "\".\n";
| }
| if(!this.initialRequest.getSuggestedAPARNumber().equals(this.request.getSuggestedAPARNumber()))
| {
| auditTrail = auditTrail + "\nSuggested APAR number changed from: " + this.initialRequest.getSuggestedAPARNumber() + " to: " + this.request.getSuggestedAPARNumber() + ".\n";
| }
| if(!this.initialRequest.getPmr().equals(this.request.getPmr()))
| {
| auditTrail = auditTrail + "\nPMR number changed from: " + this.initialRequest.getPmr() + " to: " + this.request.getPmr() + ".\n";
| }
| if(!this.initialRequest.getCurrentTargetDate().equals(this.request.getCurrentTargetDate()))
| {
| auditTrail.concat("\nCurrent target date changed from: " +
| this.initialRequest.getCurrentTargetDate().toString() + " to: " +
| this.request.getCurrentTargetDate().toString() +
| ".\n");
| }
| this.request.setAuditTrail(auditTrail);
| log.info("Request audit trail: \n" + this.request.getAuditTrail());
| log.info("auditReportImpl: end");
| }
|
| public displayRequestPageEditStatusAction()
| {
|
| }
|
| @Destroy @Remove
| public void destroy() { }
|
| @Factory("listOfTracksInThisRequest")
| public void getDefectsForThisRequest()
| {
| log.info("Creating list of defects for request with id: " + this.request.getId());
| fixmgmtEntityManager.merge(request); // to see if I can access the EntityManager - this line works!
| fixmgmtEntityManager.flush(); // to see if I can access the EntityManager - this line works!
| if (fixmgmtEntityManager.isOpen()){
| log.info("getDefectsForThisRequest: fixmgmtEntityManager is open"); // this stsmt gets printed!
| }
| this.listOfTracksInThisRequest = request.getTracks(); // throws "org.hibernate.LazyInitializationException: failed to lazily initialize a collection of role: my.application.fixmgmt.model.Request.tracks, no session or session was closed"
| }
| }
|
The stack trace I get in the browser and log is:
javax.ejb.EJBTransactionRolledbackException: org.hibernate.LazyInitializationException: failed to lazily initialize a collection of role: com.ibm.commerce.fixmgmt.model.Request.tracks, no session or session was closed
| at org.jboss.ejb3.tx.Ejb3TxPolicy.handleInCallerTx(Ejb3TxPolicy.java:93)
| at org.jboss.aspects.tx.TxPolicy.invokeInCallerTx(TxPolicy.java:130)
| at org.jboss.aspects.tx.TxInterceptor$Required.invoke(TxInterceptor.java:201)
| at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
| at org.jboss.aspects.tx.TxPropagationInterceptor.invoke(TxPropagationInterceptor.java:76)
| at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
| at org.jboss.ejb3.stateful.StatefulInstanceInterceptor.invoke(StatefulInstanceInterceptor.java:83)
| at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
| at org.jboss.aspects.security.AuthenticationInterceptor.invoke(AuthenticationInterceptor.java:77)
| at org.jboss.ejb3.security.Ejb3AuthenticationInterceptor.invoke(Ejb3AuthenticationInterceptor.java:131)
| at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
| at org.jboss.ejb3.ENCPropagationInterceptor.invoke(ENCPropagationInterceptor.java:47)
| at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
| at org.jboss.ejb3.asynchronous.AsynchronousInterceptor.invoke(AsynchronousInterceptor.java:106)
| at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
| at org.jboss.ejb3.stateful.StatefulContainer.localInvoke(StatefulContainer.java:203)
| at org.jboss.ejb3.stateful.StatefulLocalProxy.invoke(StatefulLocalProxy.java:98)
| at $Proxy369.getDefectsForThisRequest(Unknown Source)
| at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
| at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:64)
| at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
| at java.lang.reflect.Method.invoke(Method.java:615)
| at org.jboss.seam.util.Reflections.invoke(Reflections.java:20)
| at org.jboss.seam.intercept.RootInvocationContext.proceed(RootInvocationContext.java:31)
| at org.jboss.seam.intercept.ClientSideInterceptor$1.proceed(ClientSideInterceptor.java:72)
| at org.jboss.seam.intercept.SeamInvocationContext.proceed(SeamInvocationContext.java:57)
| at org.jboss.seam.interceptors.RemoveInterceptor.aroundInvoke(RemoveInterceptor.java:40)
| at org.jboss.seam.intercept.SeamInvocationContext.proceed(SeamInvocationContext.java:69)
| at org.jboss.seam.intercept.RootInterceptor.invoke(RootInterceptor.java:103)
| at org.jboss.seam.intercept.ClientSideInterceptor.invoke(ClientSideInterceptor.java:50)
| at org.javassist.tmp.java.lang.Object_$$_javassist_76.getDefectsForThisRequest(Object_$$_javassist_76.java)
| at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
| at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:64)
| at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
| at java.lang.reflect.Method.invoke(Method.java:615)
| at org.jboss.seam.util.Reflections.invoke(Reflections.java:20)
| at org.jboss.seam.util.Reflections.invokeAndWrap(Reflections.java:123)
| at org.jboss.seam.Component.callComponentMethod(Component.java:1834)
| at org.jboss.seam.Component.getInstanceFromFactory(Component.java:1696)
| at org.jboss.seam.Component.getInstance(Component.java:1633)
| at org.jboss.seam.Component.getInstance(Component.java:1610)
| at org.jboss.seam.jsf.SeamVariableResolver.resolveVariable(SeamVariableResolver.java:53)
| at com.sun.facelets.el.LegacyELContext$LegacyELResolver.getValue(LegacyELContext.java:134)
| at com.sun.el.parser.AstIdentifier.getValue(AstIdentifier.java:65)
| at com.sun.el.ValueExpressionImpl.getValue(ValueExpressionImpl.java:192)
| at com.sun.facelets.el.TagValueExpression.getValue(TagValueExpression.java:71)
| at com.sun.facelets.el.LegacyValueBinding.getValue(LegacyValueBinding.java:56)
| at javax.faces.component.UIData.getValue(UIData.java:1023)
| at javax.faces.component.UIData.createDataModel(UIData.java:789)
| at javax.faces.component.UIData.getDataModel(UIData.java:769)
| at javax.faces.component.UIData.getRowCount(UIData.java:194)
| at org.apache.myfaces.shared_impl.renderkit.html.HtmlTableRendererBase.encodeInnerHtml(HtmlTableRendererBase.java:221)
| at org.apache.myfaces.shared_impl.renderkit.html.HtmlTableRendererBase.encodeChildren(HtmlTableRendererBase.java:134)
| at javax.faces.component.UIComponentBase.encodeChildren(UIComponentBase.java:527)
| at com.sun.facelets.tag.jsf.ComponentSupport.encodeRecursive(ComponentSupport.java:244)
| at com.sun.facelets.tag.jsf.ComponentSupport.encodeRecursive(ComponentSupport.java:249)
| at com.sun.facelets.tag.jsf.ComponentSupport.encodeRecursive(ComponentSupport.java:249)
| at com.sun.facelets.FaceletViewHandler.renderView(FaceletViewHandler.java:573)
| at org.ajax4jsf.framework.ViewHandlerWrapper.renderView(ViewHandlerWrapper.java:108)
| at org.ajax4jsf.framework.ajax.AjaxViewHandler.renderView(AjaxViewHandler.java:233)
| at org.apache.myfaces.lifecycle.RenderResponseExecutor.execute(RenderResponseExecutor.java:41)
| at org.apache.myfaces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:132)
| at javax.faces.webapp.FacesServlet.service(FacesServlet.java:140)
| at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252)
| at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
| at org.jboss.seam.web.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:63)
| at org.jboss.seam.web.MultipartFilter.doFilter(MultipartFilter.java:79)
| at org.jboss.seam.web.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:49)
| at org.jboss.seam.web.RedirectFilter.doFilter(RedirectFilter.java:45)
| at org.jboss.seam.web.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:49)
| at org.jboss.seam.web.ExceptionFilter.doFilter(ExceptionFilter.java:57)
| at org.jboss.seam.web.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:49)
| at org.jboss.seam.web.SeamFilter.doFilter(SeamFilter.java:84)
| at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
| at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
| at org.ajax4jsf.framework.ajax.xmlfilter.BaseXMLFilter.doXmlFilter(BaseXMLFilter.java:127)
| at org.ajax4jsf.framework.ajax.xmlfilter.BaseFilter.doFilter(BaseFilter.java:277)
| at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
| at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
| at org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:96)
| at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
| at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
| at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213)
| at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:178)
| at org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.java:175)
| at org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:74)
| at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:126)
| at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105)
| at org.jboss.web.tomcat.tc5.jca.CachedConnectionValve.invoke(CachedConnectionValve.java:156)
| at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:107)
| at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148)
| at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:869)
| at org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:664)
| at org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:527)
| at org.apache.tomcat.util.net.MasterSlaveWorkerThread.run(MasterSlaveWorkerThread.java:112)
| at java.lang.Thread.run(Thread.java:797)
| Caused by: org.hibernate.LazyInitializationException: failed to lazily initialize a collection of role: com.ibm.commerce.fixmgmt.model.Request.tracks, 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.PersistentSet.size(PersistentSet.java:139)
| at java.util.ArrayList.(ArrayList.java:158)
| at org.jboss.seam.jsf.SetDataModel.setWrappedData(SetDataModel.java:104)
| at org.jboss.seam.jsf.SetDataModel.(SetDataModel.java:34)
| at org.jboss.seam.databinding.DataModelBinder.wrap(DataModelBinder.java:48)
| at org.jboss.seam.databinding.DataModelBinder.wrap(DataModelBinder.java:19)
| at org.jboss.seam.Component.outjectDataModel(Component.java:1317)
| at org.jboss.seam.Component.outjectDataModels(Component.java:1296)
| at org.jboss.seam.Component.outject(Component.java:1247)
| at org.jboss.seam.interceptors.BijectionInterceptor.aroundInvoke(BijectionInterceptor.java:48)
| at org.jboss.seam.intercept.SeamInvocationContext.proceed(SeamInvocationContext.java:69)
| at org.jboss.seam.interceptors.ManagedEntityIdentityInterceptor.aroundInvoke(ManagedEntityIdentityInterceptor.java:37)
| at org.jboss.seam.intercept.SeamInvocationContext.proceed(SeamInvocationContext.java:69)
| at org.jboss.seam.interceptors.MethodContextInterceptor.aroundInvoke(MethodContextInterceptor.java:27)
| at org.jboss.seam.intercept.SeamInvocationContext.proceed(SeamInvocationContext.java:69)
| at org.jboss.seam.intercept.RootInterceptor.invoke(RootInterceptor.java:103)
| at org.jboss.seam.intercept.SessionBeanInterceptor.aroundInvoke(SessionBeanInterceptor.java:53)
| at sun.reflect.GeneratedMethodAccessor490.invoke(Unknown Source)
| at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
| at java.lang.reflect.Method.invoke(Method.java:615)
| at org.jboss.ejb3.interceptor.InvocationContextImpl.proceed(InvocationContextImpl.java:118)
| at org.jboss.ejb3.interceptor.EJB3InterceptorsInterceptor.invoke(EJB3InterceptorsInterceptor.java:63)
| at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
| at org.jboss.ejb3.entity.ExtendedPersistenceContextPropagationInterceptor.invoke(ExtendedPersistenceContextPropagationInterceptor.java:57)
| at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
| at org.jboss.ejb3.entity.TransactionScopedEntityManagerInterceptor.invoke(TransactionScopedEntityManagerInterceptor.java:54)
| at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
| at org.jboss.ejb3.AllowedOperationsInterceptor.invoke(AllowedOperationsInterceptor.java:47)
| at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
| at org.jboss.aspects.tx.TxPolicy.invokeInCallerTx(TxPolicy.java:126)
| ... 94 more
|
| Immediately prior to this code being called the 'request' entity is outjected as @DataModelSelection from a @DataTable.
|
| I can get around the problem by specifying eager loading but I'd rather use the lazy loading. Am I missing something simple or misunderstanding a basic concept? Any help you can provide is really appreciated. Let me know if you need more information about the scenario.
|
| Thanks very much in advance.
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