1 Reply Latest reply on Nov 15, 2009 1:52 PM by saraswati.santanu

    jbpm 4.2 spring 2.5.6 integration

    iga3k
    iga3k Nov 15, 2009 8:59 AM

      Hello,

      I've been looking around for a good open source bpm solution and I end up choosing jBPM. Now, I'm trying to integrate it with Spring, but I'm facing some troubles.

      Here is the jbpm minimal configuration that I'm trying to use:

       <process-engine-context>
 <command-service>
 <retry-interceptor />
 <environment-interceptor />
 <spring-transaction-interceptor />
 </command-service>
 </process-engine-context>

 <transaction-context>
 <transaction />
 <hibernate-session current="true" />
 </transaction-context>


      , the spring configuration: 

       <bean id="jbpmConfiguration" class="org.jbpm.pvm.internal.cfg.SpringConfiguration">
 <constructor-arg value="com/psinova/jbpm.cfg.xml" />
 </bean>

 <bean id="processEngine" factory-bean="jbpmConfiguration" factory-method="buildProcessEngine" />
 <bean id="repositoryService" factory-bean="processEngine" factory-method="getRepositoryService" />
 <bean id="executionService" factory-bean="processEngine" factory-method="getExecutionService" />


      and when spring is trying to initialize the first bean, a npe is thrown with this stack: 

      Caused by: java.lang.NullPointerException
 at org.jbpm.pvm.internal.cfg.ProcessEngineImpl.checkDb(ProcessEngineImpl.java:177)
 at org.jbpm.pvm.internal.cfg.ProcessEngineImpl.buildProcessEngine(ProcessEngineImpl.java:170)
 at org.jbpm.pvm.internal.cfg.SpringConfiguration.buildProcessEngine(SpringConfiguration.java:81)
 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.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:115)


      I've also created a JIRA ticket for this issue: https://jira.jboss.org/jira/browse/JBPM-2646
      Am I doing something wrong? Please advise!

      Kind regards,
      Alexandru.

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        • 1. Re: jbpm 4.2 spring 2.5.6 integration
          saraswati.santanu
          saraswati.santanu Nov 15, 2009 1:52 PM (in response to iga3k)

          This is sample jpdl.cfg.xml. Please observe the command-service and db id generator mappings.

          <jbpm-configuration>

 <import resource="jbpm.businesscalendar.cfg.xml" />
 <import resource="jbpm.jpdl.cfg.xml" />

 <process-engine-context>
 <repository-service />
 <repository-cache />
 <execution-service />
 <history-service />
 <management-service />
 <task-service />
 <identity-service />
 <command-service name="txRequiredCommandService">
 <retry-interceptor />
 <environment-interceptor />
 <spring-transaction-interceptor/>
 </command-service>

 <object class="org.jbpm.pvm.internal.id.DatabaseDbidGenerator">
 <field name="commandService"><ref object="txRequiredCommandService" /></field>
 </object>

 <object class="org.jbpm.pvm.internal.id.DatabaseIdComposer" init="eager" />

 <script-manager default-expression-language="juel" default-script-language="juel">
 <script-language name="juel" factory="org.jbpm.pvm.internal.script.JuelScriptEngineFactory" />
 </script-manager>

 <job-executor auto-start="false" />

 <types resource="jbpm.variable.types.xml" />
 </process-engine-context>

 <transaction-context>
 <repository-session/>
 <db-session/>

 <message-session/>
 <timer-session/>
 <history-session/>

 <hibernate-session current="true"/>
 </transaction-context>

</jbpm-configuration>


          You can also refer to this post http://www.jboss.org/index.html?module=bb&op=viewtopic&t=163512

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