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Hibernate LazyInitializationException during swimlane creation
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created by <a href="http://community.jboss.org/people/wrecked">Anup Nair</a> in <i>jBPM</i> - <a href="http://community.jboss.org/message/566066#566066">View the full discussion</a>
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<div class="jive-rendered-content"><p>Hi All,</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>I am a new bie to this site. I am currently using jBPM 4 with Oracle as db.</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>I have created a sample workflow and using the JBPM API to create instances and moving instance from one activity to another.</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>However when i am trying to create a swimlane programatically i am getting <strong>org.hibernate.LazyInitializationException</strong></p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p><strong>I am not getting an idea how the hibernate session gets closed.<br/></strong></p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>Following is the code snippet for swimlane creation:</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>public void testAddParticipants() throws Exception{<br/>        ProcessInstance processInstance = executionService.findProcessInstanceById("ServiceCenter.1");<br/>        EnvironmentImpl    environment =(EnvironmentImpl)((EnvironmentFactory)processService).openEnvironment();<br/>        try{<br/>            Collection<? extends Execution> executionMap = processInstance.getExecutions();<br/>            for (Execution execution : executionMap) {<br/>                System.out.println(execution.getClass());<br/>                if(execution instanceof ExecutionImpl){<br/>                    final ExecutionImpl exec = (ExecutionImpl) execution;<br/>                    SwimlaneImpl role = exec.createSwimlane("approver");<br/>                    System.out.println("Approver role added:"+role);<br/>                }</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>                      }<br/>        }finally{<br/>            environment.close();<br/>        }<br/>    }</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>The exception trace is:</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>### EXCEPTION ###########################################<br/>[<strong>LazyInitializationException] failed to lazily initialize a collection of role: org.jbpm.pvm.internal.model.ExecutionImpl.swimlanes, no session or session was closed<br/>org.hibernate.LazyInitializationException: failed to lazily initialize a collection of role: org.jbpm.pvm.internal.model.ExecutionImpl.swimlanes, no session or session was closed</strong><br/>    at org.hibernate.collection.AbstractPersistentCollection.throwLazyInitializationException(AbstractPersistentCollection.java:380)<br/>    at org.hibernate.collection.AbstractPersistentCollection.throwLazyInitializationExceptionIfNotConnected(AbstractPersistentCollection.java:372)<br/>    at org.hibernate.collection.AbstractPersistentCollection.initialize(AbstractPersistentCollection.java:365)<br/>    at org.hibernate.collection.PersistentMap.put(PersistentMap.java:184)<br/>    at org.jbpm.pvm.internal.model.ExecutionImpl.createSwimlane(ExecutionImpl.java:874)<br/>    at com.jpmc.servicecenter.ServiceCenter.testAddParticipants(ServiceCenter.java:304)<br/>    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)<br/>    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)<br/>    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)<br/>    at java.lang.reflect.Method.invoke(Method.java:597)<br/>    at junit.framework.TestCase.runTest(TestCase.java:164)<br/>    at junit.framework.TestCase.runBare(TestCase.java:130)<br/>    at junit.framework.TestResult$1.protect(TestResult.java:106)<br/>    at junit.framework.TestResult.runProtected(TestResult.java:124)<br/>    at junit.framework.TestResult.run(TestResult.java:109)<br/>    at junit.framework.TestCase.run(TestCase.java:120)<br/>    at org.eclipse.jdt.internal.junit.runner.junit3.JUnit3TestReference.run(JUnit3TestReference.java:130)<br/>    at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)<br/>    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:467)<br/>    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:683)<br/>    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:390)<br/>    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:197)</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>The jbpm.cfg.xml has the following configuration:</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p><strong><?xml version="1.0" encoding="UTF-8"?></strong></p><p style="min-height: 8pt; height: 8pt; padding: 0px;"><strong> </strong> </p><p><strong><jbpm-configuration></strong></p><p style="min-height: 8pt; height: 8pt; padding: 0px;"><strong> </strong> </p><p><strong>  <import resource="jbpm.default.cfg.xml" /><br/>  <import resource="jbpm.businesscalendar.cfg.xml" /><br/>  <import resource="jbpm.tx.hibernate.cfg.xml" /><br/>  <import resource="jbpm.jpdl.cfg.xml" /><br/>  <import resource="jbpm.bpmn.cfg.xml" /><br/>  <import resource="jbpm.identity.cfg.xml" /><br/>  <import resource="jbpm.task.hbm.xml" /></strong></p><p style="min-height: 8pt; height: 8pt; padding: 0px;"><strong> </strong> </p><p><strong>  <!-- Job executor is excluded for running the example test cases. --><br/>  <!-- To enable timers and messages in production use, this should be included. --><br/>  <!--<br/>  <import resource="jbpm.jobexecutor.cfg.xml" /><br/>  --></strong></p><p style="min-height: 8pt; height: 8pt; padding: 0px;"><strong> </strong> </p><p><strong></jbpm-configuration></strong></p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>I am stuck with this error from the past 1 week.</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>please help me out.</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>Thanks in advance.</p></div>
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