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Postgresql and JBPM5.4 issue
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created by <a href="https://community.jboss.org/people/abadr">abadr</a> in <i>jBPM</i> - <a href="https://community.jboss.org/message/828024#828024">View the full discussion</a>
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<div class="jive-rendered-content"><p>Hi,</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>I want to include workflow processes in my project, which is currently using postgresql 8.4. I added a workflow process and want it to be persistent. I am using sample database for this purpose. I configured the persistence.xml file with the required data sources. However, some tables were not generated, so I had to modify the sql scripts for those tables (to be compatible with postgresql). I will include the sql script for these tables below. When I added these tables manually to database and tried to run the process again, I got the following exceptions (I guess this might be due to the Identity issue with postgresql but I am not sure how to resolve this problem):</p><p>0    15/07 16:57:16,156[main] ERROR hibernate.util.JDBCExceptionReporter.logExceptions  - ERROR: null value in column "id" violates not-null constraint</p><p>6    15/07 16:57:16,162[main] ERROR drools.persistence.SingleSessionCommandService.rollbackTransaction  - Could not commit session</p><p>javax.persistence.PersistenceException: org.hibernate.exception.ConstraintViolationException: could not insert: <a class="jive-link-external-small" href="org.drools.persistence.info.SessionInfo" rel="nofollow">org.drools.persistence.info.SessionInfo</a></p><p>     at org.hibernate.ejb.AbstractEntityManagerImpl.throwPersistenceException(AbstractEntityManagerImpl.java:614)</p><p>     at org.hibernate.ejb.AbstractEntityManagerImpl.persist(AbstractEntityManagerImpl.java:226)</p><p>     at org.drools.persistence.jpa.JpaPersistenceContext.persist(JpaPersistenceContext.java:24)</p><p>     at org.drools.persistence.SingleSessionCommandService.(SingleSessionCommandService.java:153)</p><p>     at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)</p><p>     at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:57)</p><p>     at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)</p><p>     at java.lang.reflect.Constructor.newInstance(Constructor.java:526)</p><p>     at org.drools.persistence.jpa.KnowledgeStoreServiceImpl.buildCommandService(KnowledgeStoreServiceImpl.java:128)</p><p>     at org.drools.persistence.jpa.KnowledgeStoreServiceImpl.newStatefulKnowledgeSession(KnowledgeStoreServiceImpl.java:66)</p><p>     at org.drools.persistence.jpa.JPAKnowledgeService.newStatefulKnowledgeSession(JPAKnowledgeService.java:122)</p><p>     at org.jbpm.test.JBPMHelper.loadStatefulKnowledgeSession(JBPMHelper.java:159)</p><p>     at org.jbpm.test.JBPMHelper.newStatefulKnowledgeSession(JBPMHelper.java:136)</p><p>     at com.sample.UploadDocumentWorkflowProcessMain.main(UploadDocumentWorkflowProcessMain.java:46)</p><p>Caused by: org.hibernate.exception.ConstraintViolationException: could not insert: <a class="jive-link-external-small" href="org.drools.persistence.info.SessionInfo" rel="nofollow">org.drools.persistence.info.SessionInfo</a></p><p>     at org.hibernate.exception.SQLStateConverter.convert(SQLStateConverter.java:94)</p><p>     at org.hibernate.exception.JDBCExceptionHelper.convert(JDBCExceptionHelper.java:66)</p><p>     at org.hibernate.id.insert.AbstractReturningDelegate.performInsert(AbstractReturningDelegate.java:64)</p><p>     at org.hibernate.persister.entity.AbstractEntityPersister.insert(AbstractEntityPersister.java:2176)</p><p>     at org.hibernate.persister.entity.AbstractEntityPersister.insert(AbstractEntityPersister.java:2656)</p><p>     at org.hibernate.action.EntityIdentityInsertAction.execute(EntityIdentityInsertAction.java:71)</p><p>     at org.hibernate.engine.ActionQueue.execute(ActionQueue.java:279)</p><p>     at org.hibernate.event.def.AbstractSaveEventListener.performSaveOrReplicate(AbstractSaveEventListener.java:321)</p><p>     at org.hibernate.event.def.AbstractSaveEventListener.performSave(AbstractSaveEventListener.java:204)</p><p>     at org.hibernate.event.def.AbstractSaveEventListener.saveWithGeneratedId(AbstractSaveEventListener.java:130)</p><p>     at org.hibernate.ejb.event.EJB3PersistEventListener.saveWithGeneratedId(EJB3PersistEventListener.java:49)</p><p>     at org.hibernate.event.def.DefaultPersistEventListener.entityIsTransient(DefaultPersistEventListener.java:154)</p><p>     at org.hibernate.event.def.DefaultPersistEventListener.onPersist(DefaultPersistEventListener.java:110)</p><p>     at org.hibernate.event.def.DefaultPersistEventListener.onPersist(DefaultPersistEventListener.java:61)</p><p>     at org.hibernate.impl.SessionImpl.firePersist(SessionImpl.java:646)</p><p>     at org.hibernate.impl.SessionImpl.persist(SessionImpl.java:620)</p><p>     at org.hibernate.impl.SessionImpl.persist(SessionImpl.java:624)</p><p>     at org.hibernate.ejb.AbstractEntityManagerImpl.persist(AbstractEntityManagerImpl.java:220)</p><p>     ... 12 more</p><p>Caused by: org.postgresql.util.PSQLException: ERROR: null value in column "id" violates not-null constraint</p><p>     at org.postgresql.core.v3.QueryExecutorImpl.receiveErrorResponse(QueryExecutorImpl.java:2157)</p><p>     at org.postgresql.core.v3.QueryExecutorImpl.processResults(QueryExecutorImpl.java:1886)</p><p>     at org.postgresql.core.v3.QueryExecutorImpl.execute(QueryExecutorImpl.java:255)</p><p>     at org.postgresql.jdbc2.AbstractJdbc2Statement.execute(AbstractJdbc2Statement.java:555)</p><p>     at org.postgresql.jdbc2.AbstractJdbc2Statement.executeWithFlags(AbstractJdbc2Statement.java:417)</p><p>     at org.postgresql.jdbc2.AbstractJdbc2Statement.executeUpdate(AbstractJdbc2Statement.java:363)</p><p>     at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)</p><p>     at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)</p><p>     at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)</p><p>     at java.lang.reflect.Method.invoke(Method.java:606)</p><p>     at bitronix.tm.resource.jdbc.BaseProxyHandlerClass.invoke(BaseProxyHandlerClass.java:63)</p><p>     at com.sun.proxy.$Proxy32.executeUpdate(Unknown Source)</p><p>     at org.hibernate.id.IdentityGenerator$GetGeneratedKeysDelegate.executeAndExtract(IdentityGenerator.java:94)</p><p>     at org.hibernate.id.insert.AbstractReturningDelegate.performInsert(AbstractReturningDelegate.java:57)</p><p>     ... 27 more</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>My persistance.xml file is as follows:</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>  </p></div>
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