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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;">&#160;</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;">&#160;</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;">&#160;</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;">&#160;</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;">&#160;</p><p>Following is the code snippet for swimlane creation:</p><p style="min-height: 8pt; height: 8pt; padding: 0px;">&#160;</p><p>public void testAddParticipants() throws Exception{<br/>&#160;&#160;&#160;&#160;&#160;&#160;&#160; ProcessInstance processInstance = executionService.findProcessInstanceById("ServiceCenter.1");<br/>&#160;&#160;&#160;&#160;&#160;&#160;&#160; EnvironmentImpl&#160;&#160;&#160; environment =(EnvironmentImpl)((EnvironmentFactory)processService).openEnvironment();<br/>&#160;&#160;&#160;&#160;&#160;&#160;&#160; try{<br/>&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; Collection&lt;? extends Execution&gt; executionMap = processInstance.getExecutions();<br/>&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; for (Execution execution : executionMap) {<br/>&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; System.out.println(execution.getClass());<br/>&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; if(execution instanceof ExecutionImpl){<br/>&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; final ExecutionImpl exec = (ExecutionImpl) execution;<br/>&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; SwimlaneImpl role = exec.createSwimlane("approver");<br/>&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; System.out.println("Approver role added:"+role);<br/>&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; }</p><p style="min-height: 8pt; height: 8pt; padding: 0px;">&#160;</p><p>&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; }<br/>&#160;&#160;&#160;&#160;&#160;&#160;&#160; }finally{<br/>&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; environment.close();<br/>&#160;&#160;&#160;&#160;&#160;&#160;&#160; }<br/>&#160;&#160;&#160; }</p><p style="min-height: 8pt; height: 8pt; padding: 0px;">&#160;</p><p style="min-height: 8pt; height: 8pt; padding: 0px;">&#160;</p><p>The exception trace is:</p><p style="min-height: 8pt; height: 8pt; padding: 0px;">&#160;</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/>&#160;&#160;&#160; at org.hibernate.collection.AbstractPersistentCollection.throwLazyInitializationException(AbstractPersistentCollection.java:380)<br/>&#160;&#160;&#160; at org.hibernate.collection.AbstractPersistentCollection.throwLazyInitializationExceptionIfNotConnected(AbstractPersistentCollection.java:372)<br/>&#160;&#160;&#160; at org.hibernate.collection.AbstractPersistentCollection.initialize(AbstractPersistentCollection.java:365)<br/>&#160;&#160;&#160; at org.hibernate.collection.PersistentMap.put(PersistentMap.java:184)<br/>&#160;&#160;&#160; at org.jbpm.pvm.internal.model.ExecutionImpl.createSwimlane(ExecutionImpl.java:874)<br/>&#160;&#160;&#160; at com.jpmc.servicecenter.ServiceCenter.testAddParticipants(ServiceCenter.java:304)<br/>&#160;&#160;&#160; at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)<br/>&#160;&#160;&#160; at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)<br/>&#160;&#160;&#160; at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)<br/>&#160;&#160;&#160; at java.lang.reflect.Method.invoke(Method.java:597)<br/>&#160;&#160;&#160; at junit.framework.TestCase.runTest(TestCase.java:164)<br/>&#160;&#160;&#160; at junit.framework.TestCase.runBare(TestCase.java:130)<br/>&#160;&#160;&#160; at junit.framework.TestResult$1.protect(TestResult.java:106)<br/>&#160;&#160;&#160; at junit.framework.TestResult.runProtected(TestResult.java:124)<br/>&#160;&#160;&#160; at junit.framework.TestResult.run(TestResult.java:109)<br/>&#160;&#160;&#160; at junit.framework.TestCase.run(TestCase.java:120)<br/>&#160;&#160;&#160; at org.eclipse.jdt.internal.junit.runner.junit3.JUnit3TestReference.run(JUnit3TestReference.java:130)<br/>&#160;&#160;&#160; at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)<br/>&#160;&#160;&#160; at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:467)<br/>&#160;&#160;&#160; at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:683)<br/>&#160;&#160;&#160; at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:390)<br/>&#160;&#160;&#160; at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:197)</p><p style="min-height: 8pt; height: 8pt; padding: 0px;">&#160;</p><p>The jbpm.cfg.xml has the following configuration:</p><p style="min-height: 8pt; height: 8pt; padding: 0px;">&#160;</p><p><strong>&lt;?xml version="1.0" encoding="UTF-8"?&gt;</strong></p><p style="min-height: 8pt; height: 8pt; padding: 0px;"><strong> </strong>&#160;</p><p><strong>&lt;jbpm-configuration&gt;</strong></p><p style="min-height: 8pt; height: 8pt; padding: 0px;"><strong> </strong>&#160;</p><p><strong>&#160; &lt;import resource="jbpm.default.cfg.xml" /&gt;<br/>&#160; &lt;import resource="jbpm.businesscalendar.cfg.xml" /&gt;<br/>&#160; &lt;import resource="jbpm.tx.hibernate.cfg.xml" /&gt;<br/>&#160; &lt;import resource="jbpm.jpdl.cfg.xml" /&gt;<br/>&#160; &lt;import resource="jbpm.bpmn.cfg.xml" /&gt;<br/>&#160; &lt;import resource="jbpm.identity.cfg.xml" /&gt;<br/>&#160; &lt;import resource="jbpm.task.hbm.xml" /&gt;</strong></p><p style="min-height: 8pt; height: 8pt; padding: 0px;"><strong> </strong>&#160;</p><p><strong>&#160; &lt;!-- Job executor is excluded for running the example test cases. --&gt;<br/>&#160; &lt;!-- To enable timers and messages in production use, this should be included. --&gt;<br/>&#160; &lt;!--<br/>&#160; &lt;import resource="jbpm.jobexecutor.cfg.xml" /&gt;<br/>&#160; --&gt;</strong></p><p style="min-height: 8pt; height: 8pt; padding: 0px;"><strong> </strong>&#160;</p><p><strong>&lt;/jbpm-configuration&gt;</strong></p><p style="min-height: 8pt; height: 8pt; padding: 0px;">&#160;</p><p>I am stuck with this error from the past 1 week.</p><p style="min-height: 8pt; height: 8pt; padding: 0px;">&#160;</p><p>please help me out.</p><p style="min-height: 8pt; height: 8pt; padding: 0px;">&#160;</p><p>Thanks in advance.</p></div>

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