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Re: Does RESOURCE_LOCAL work with JBPM
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created by <a href="https://community.jboss.org/people/lakshmi.sampath">lakshmi sampath</a> in <i>jBPM</i> - <a href="https://community.jboss.org/message/724849#724849">View the full discussion</a>
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<div class="jive-rendered-content"><p>Mauricio,  I am trying to create a statefull session, but the error always goes into checking for JTA UserTransaction inside SingleSessionCommandService.</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>Here's the exception and below are my config files and java code. Hope its something simple you can point out!!! Thx</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>--------------------------------------------------------------------------------------------------------------------------</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>14:03:06,392 ERROR [SingleSessionCommandService] Could not commit session</p><p>java.lang.NullPointerException</p><p>        at org.drools.persistence.jta.JtaTransactionManager.getStatus(JtaTransactionManager.java:197)</p><p>        at org.drools.persistence.jta.JtaTransactionManager.begin(JtaTransactionManager.java:150)</p><p>        at org.drools.persistence.SingleSessionCommandService.<init>(SingleSessionCommandService.java:120)</p><p>        at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)</p><p>        at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)</p><p>        at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)</p><p>        at java.lang.reflect.Constructor.newInstance(Constructor.java:513)</p><p>        at org.drools.persistence.jpa.KnowledgeStoreServiceImpl.buildCommanService(KnowledgeStoreServiceImpl.java:116)</p><p>        at org.drools.persistence.jpa.KnowledgeStoreServiceImpl.newStatefulKnowledgeSession(KnowledgeStoreServiceImpl.java:54)</p><p>        at org.drools.persistence.jpa.JPAKnowledgeService.newStatefulKnowledgeSession(JPAKnowledgeService.java:122)</p><p>-----------------------persistence.xml----------------------------------------------</p><p> <persistence-unit name="org.jbpm.engine.persistence.jpa" transaction-type="RESOURCE_LOCAL"></p><p>    <provider>org.hibernate.ejb.HibernatePersistence</provider></p><p>    <non-jta-data-source>java:jbpmDS</non-jta-data-source></p><p>    </p><p>          <class>org.drools.persistence.info.SessionInfo</class></p><p>    <class>org.jbpm.persistence.processinstance.ProcessInstanceInfo</class></p><p>    <class>org.drools.persistence.info.WorkItemInfo</class></p><p>    <class>org.jbpm.process.audit.ProcessInstanceLog</class></p><p>    <class>org.jbpm.process.audit.NodeInstanceLog</class></p><p>    <class>org.jbpm.process.audit.VariableInstanceLog</class></p><p>    </p><p>    <properties></p><p>      <property name="hibernate.dialect" value="org.hibernate.dialect.Oracle10gDialect"/></p><p>      <property name="hibernate.hbm2ddl.auto" value="validate" /></p><p>      <property name="hibernate.max_fetch_depth" value="3"/></p><p>      <property name="hibernate.show_sql" value="true" /></p><p>      <property name="hibernate.transaction.manager_lookup_class" value="org.hibernate.transaction.JBossTransactionManagerLookup" /></p><p>    </properties></p><p>  </persistence-unit></p><p></persistence></p><p>---------------Spring config  file---------------------------------- </p><p>          <jee:jndi-lookup id="processengine.dataSource" jndi-name="java:/jbpmDS"/></p><p>          <context:annotation-config/></p><p>  </p><p>          <bean id="transactionManager" class="org.springframework.orm.jpa.JpaTransactionManager"></p><p>                    <property name="entityManagerFactory" ref="entityManagerFactory" /></p><p>          </bean></p><p>          <bean id="entityManagerFactory"</p><p>                    class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean"></p><p>                    <property name="persistenceUnitName" value="org.jbpm.engine.persistence.jpa" /></p><p>                    <property name="dataSource" ref="processengine.dataSource" /></p><p>          </bean></p><p>          <bean id="processEngine" name="processEngine"</p><p>                    class="com.processengine.jbpm.impl.MyJBPMHandler"></p><p>                    <property name="emf" ref="entityManagerFactory" /></p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>          </bean> </p><p>--------------End spring config file----------------------------------</p><p>-------------------MyJBPMHandler Java class-----------------------------------------</p><p> public class MyJBPMHandler{</p><p> private javax.persistence.EntityManagerFactory emf;</p><p> public EntityManagerFactory getEmf() {</p><p>                    return emf;</p><p>          }</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>          public void setEmf(EntityManagerFactory emf) {</p><p>                    this.emf = emf;</p><p>          }</p><p>  </p><p>          public void init(){</p><p>                    KnowledgeBase kbase  = KnowledgeBuilderFactory.newKnowledgeBuilder().newKnowledgeBase();</p><p>                    Environment env = KnowledgeBaseFactory.newEnvironment();</p><p>                    env.set( EnvironmentName.ENTITY_MANAGER_FACTORY, emf );</p><p>                    StatefulKnowledgeSession ksession = JPAKnowledgeService.newStatefulKnowledgeSession(kbase,null,env);</p><p>          }</p><p>}</p><p>----------------------------------------------------------------------------</p></div>
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