[jboss-user] [jBPM] - Re: NullPointerException when trying to configure jbpm5 with Spring 3.0 and Persistence

[liliana.iovanovici]

liliana.iovanovici [https://community.jboss.org/people/liliana.iovanovici] created the discussion

"Re: NullPointerException when trying to configure jbpm5 with Spring 3.0 and Persistence"

To view the discussion, visit: https://community.jboss.org/message/719388#719388

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I was trying to configure persistence in other way, using Bitronix. My spring-conf.xml file is:



          <bean id="transactionManager"
                    class="org.springframework.transaction.jta.JtaTransactionManager">
                    <property name="transactionManager" ref="bitronixTransactionManager" />
                    <property name="userTransaction" ref="bitronixTransactionManager" />
          </bean>


          <bean id="bitronixTransactionManager" factory-method="getTransactionManager"
                    class="bitronix.tm.TransactionManagerServices" depends-on="transactionManager"
                    destroy-method="shutdown" />


          <bean id="entityManagerFactory"
                    class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean">
                    <property name="persistenceUnitName" value="oracle" />
                    <property name="persistenceXmlLocation" value="classpath:META-INF/persistence.xml" />
                    <property name="jpaVendorAdapter">
                              <bean class="org.springframework.orm.jpa.vendor.HibernateJpaVendorAdapter">
                                        <property name="databasePlatform" value="org.hibernate.dialect.Oracle10gDialect" />
                                        <property name="showSql" value="true" />
                                        <property name="generateDdl" value="false" />
                              </bean>
                    </property>
          </bean>


          <jbpm:kbase id="kbase">
                    <jbpm:resources>
                              <jbpm:resource type="BPMN2" source="classpath:Hi.bpmn" />
                    </jbpm:resources>
          </jbpm:kbase>


          <jbpm:ksession id="persistentKSession" type="stateful"
                    kbase="kbase">
                    <jbpm:configuration>
                              <jbpm:jpa-persistence>
                                        <jbpm:transaction-manager ref="transactionManager" />
                                        <jbpm:entity-manager-factory ref="entityManagerFactory" />
                              </jbpm:jpa-persistence>
                    </jbpm:configuration>
          </jbpm:ksession>


*And persistence.xml file is:*

 <persistence-unit name="oracle" transaction-type="JTA">
    <provider>org.hibernate.ejb.HibernatePersistence</provider>
    <jta-data-source></jta-data-source>
    <mapping-file>META-INF/JBPMorm.xml</mapping-file>
    <class>org.drools.persistence.info.SessionInfo</class>
    <class>org.jbpm.persistence.processinstance.ProcessInstanceInfo</class>
    <class>org.drools.persistence.info.WorkItemInfo</class>

     <properties>
      <property name="hibernate.dialect" value="org.hibernate.dialect.Oracle10gDialect"/>
      <property name="hibernate.connection.driver_class" value="oracle.jdbc.OracleDriver"/>
      <property name="hibernate.connection.url" value="jdbc:oracle:thin:@localhost:1521:xe" />
      <property name="hibernate.connection.username" value="apsfsample"/>
      <property name="hibernate.connection.password" value="apsf"/>
      <property name="hibernate.connection.autocommit" value="false" />
      <property name="hibernate.max_fetch_depth" value="3"/>
      <property name="hibernate.hbm2ddl.auto" value="create" />
      <property name="hibernate.show_sql" value="true" />
      <property name="hibernate.transaction.manager_lookup_class" value="org.hibernate.transaction.BTMTransactionManagerLookup"/>
    </properties>

  </persistence-unit>
</persistence>

I *steel* got an exeption. It seems that the session can be commited in database. The error is:

11:14:25,437 ERROR SingleSessionCommandService:313 - Could not commit session
java.lang.NullPointerException
          at org.drools.persistence.SingleSessionCommandService.<init>(SingleSessionCommandService.java:125)
          at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
          at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)
          at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
          at java.lang.reflect.Constructor.newInstance(Constructor.java:513)
          at org.drools.persistence.jpa.KnowledgeStoreServiceImpl.buildCommanService(KnowledgeStoreServiceImpl.java:116)
          at org.drools.persistence.jpa.KnowledgeStoreServiceImpl.newStatefulKnowledgeSession(KnowledgeStoreServiceImpl.java:54)
          at org.drools.persistence.jpa.JPAKnowledgeService.newStatefulKnowledgeSession(JPAKnowledgeService.java:122)
          at org.drools.container.spring.beans.StatefulKnowledgeSessionBeanFactory.internalAfterPropertiesSet(StatefulKnowledgeSessionBeanFactory.java:82)
          at org.drools.container.spring.beans.AbstractKnowledgeSessionBeanFactory.afterPropertiesSet(AbstractKnowledgeSessionBeanFactory.java:108)
          at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1460)
          at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1400)
          at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:513)
          at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:450)
          at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:290)
          at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222)
          at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:287)
          at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:189)
          at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:545)
          at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:871)
          at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:423)
          at org.springframework.context.support.ClassPathXmlApplicationContext.<init>(ClassPathXmlApplicationContext.java:139)
          at org.springframework.context.support.ClassPathXmlApplicationContext.<init>(ClassPathXmlApplicationContext.java:83)

Does anybody know this error? 

Thanks.
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