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나는 어려움을 겪습니다. 나는 Drools-flow로 지속성을 구현하려고하는데, workitem/processinstance에서 속성의 값을 얻고 싶습니다. 그러나 workitem 또는 프로세스 인스턴스를 얻으려고 할 때마다 아래의 스택 추적으로 끝납니다.mysql을 사용하여 지속성을 저하시키고 프로세스 인스턴스를 가져올 수 없습니다.
나는 소스를 통해 걷고 있는데 내가 말할 수있는 것에서 이것은 엔티티 클래스에서 @Lob으로 주석 처리 된 속성을 얻고 시도 할 때마다 발생합니다.
내 환경은 BTM을 트랜잭션 관리자로 사용하는 hibernate/mysql/JPA 지속성이다.
다음과 같이 내가 getProcessInstance 전화 해요 : 내가 잘못 뭐하는 거지
ksession = JPAKnowledgeService.loadStatefulKnowledgeSession(ksession.getId(), m_kbase, null, m_environment);
m_pi = ksession.getProcessInstance(m_pi.getId());
?
java.lang.NullPointerException
at java.io.ByteArrayInputStream.(ByteArrayInputStream.java:89)
at org.drools.persistence.processinstance.ProcessInstanceInfo.getProcessInstance(ProcessInstanceInfo.java:135)
at org.drools.persistence.processinstance.JPAProcessInstanceManager.getProcessInstance(JPAProcessInstanceManager.java:62)
at org.drools.common.AbstractWorkingMemory.getProcessInstance(AbstractWorkingMemory.java:1793)
at org.drools.impl.StatefulKnowledgeSessionImpl.getProcessInstance(StatefulKnowledgeSessionImpl.java:261)Hibernate: select at org.drools.command.runtime.process.GetProcessInstanceCommand.execute(GetProcessInstanceCommand.java:29)
at org.drools.command.runtime.process.GetProcessInstanceCommand.execute(GetProcessInstanceCommand.java:12)
at org.drools.persistence.session.SingleSessionCommandService.execute(SingleSessionCommandService.java:254)
at org.drools.command.impl.CommandBasedStatefulKnowledgeSession.getProcessInstance(CommandBasedStatefulKnowledgeSession.java:95)
at com.thoughtvine.tracks.workflow.TracksFlow.getParameterFromWorkItem(TracksFlow.java:182)
at com.thoughtvine.tracks.workflow.test.TestTracksFlow.testGetWorkItem(TestTracksFlow.java:118)
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:597)
at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:44)
at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:15)
at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:41)
at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:20)
at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:28)
at org.junit.internal.runners.statements.RunAfters.evaluate(RunAfters.java:31)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:73)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:46)
at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:180)
at org.junit.runners.ParentRunner.access$000(ParentRunner.java:41)
at org.junit.runners.ParentRunner$1.evaluate(ParentRunner.java:173)
at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:28)
at org.junit.internal.runners.statements.RunAfters.evaluate(RunAfters.java:31)
at org.junit.runners.ParentRunner.run(ParentRunner.java:220)
at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:46)
at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:467)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:683)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:390)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:197)