[jboss-user] [jBPM] New message: "[Q v4.3] Spring - Juel Integration"

[Ken Hoying]

User development,

A new message was posted in the thread "[Q v4.3] Spring - Juel Integration":

http://community.jboss.org/message/530559#530559

Author  : Ken Hoying
Profile : http://community.jboss.org/people/khoying

Message:
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I believe that I have successfully integrated jBPM with Spring.  However, I am still having one issue.  Section 17 of the jBPM Developer's Guide, seems to indicate that Spring objects can be referenced in Juel expressions.  However, I have not been able to make this work.  I get the stack trace:
 
Caused by: javax.el.PropertyNotFoundException: Cannot find property boNpcPaProcess
     at de.odysseus.el.util.SimpleResolver.get(SimpleResolver.java:106)
     at de.odysseus.el.util.SimpleResolver.getValue(SimpleResolver.java:126)
     at de.odysseus.el.tree.impl.ast.AstIdentifier.eval(AstIdentifier.java:69)
     at de.odysseus.el.tree.impl.ast.AstEval.eval(AstEval.java:42)
     at de.odysseus.el.tree.impl.ast.AstNode.getValue(AstNode.java:29)
     at de.odysseus.el.TreeValueExpression.getValue(TreeValueExpression.java:120)
     at org.jbpm.pvm.internal.script.JuelScriptEngine.evalExpr(JuelScriptEngine.java:176)

 
My jbpm.cfg.xml looks as follows:
 
<?xml version="1.0" encoding="UTF-8"?>

<jbpm-configuration>

       <import resource="jbpm.default.cfg.xml" />
     <import resource="jbpm.tx.spring.cfg.xml" />
       <import resource="jbpm.jpdl.cfg.xml" />
     <import resource="jbpm.bpmn.cfg.xml" />
     <import resource="jbpm.identity.cfg.xml" />

     <process-engine-context>
          <!-- Override default script manager. Wire it to read the Spring context. -->
         <script-manager default-expression-language="juel" default-script-language="juel"
                             read-contexts="execution, environment, process-engine, spring"
                              write-context="">
                <script-language name="juel" factory="org.jbpm.pvm.internal.script.JuelScriptEngineFactory" />
                <!--  Juel should be sufficient.
                     <script-language name="bsh" factory="org.jbpm.pvm.internal.script.BshScriptEngineFactory" />
                     <script-language name="groovy" factory="org.jbpm.pvm.internal.script.GroovyScriptEngineFactory" />
                -->
         </script-manager>
     
          <business-calendar>
              <monday         hours="8:00-17:00"/>
                <tuesday        hours="8:00-17:00"/>
                <wednesday      hours="8:00-17:00"/>
                <thursday       hours="8:00-17:00"/>
                <friday         hours="8:00-17:00"/>
                <holiday     period="01/07/2008 - 31/08/2008"/>
         </business-calendar>
         
         
    </process-engine-context>  
  
  <!--  Web Console 
       <import resource="jbpm.console.cfg.xml" />
  -->
  
  <!-- Needed for timers and async tasks  
       <import resource="jbpm.jobexecutor.cfg.xml" />
  -->
    
</jbpm-configuration>


 
My Spring config is broken into several files.  However, the relevant pieces are as follows:
 
     <bean id="springHelper" class="org.jbpm.pvm.internal.processengine.SpringHelper" />

       <bean id="processEngine" factory-bean="springHelper" factory-method="createProcessEngine" />


     <bean id="dataSource"
          class="org.springframework.jndi.JndiObjectFactoryBean">
          <property name="jndiName"
               value="jdbc/ScaGlobalDataSource" />     
     </bean>

     <!-- Hibernate SessionFactory -->
     <bean id="sessionFactory"
          class="org.springframework.orm.hibernate3.LocalSessionFactoryBean">
          <property name="dataSource" ref="dataSource" />
          
          <!-- This config is for unit tests as the jar will not exist yet.  -->
          <!-- It does not work at runtime since the files will be located in a jar and hibernate will not pick them up.  -->
          <property name="mappingLocations">
               <value>classpath*:**/*.hbm.xml</value>
         </property>

          <!-- This config does not work for unit tests as the jar will not exist yet.  -->
          <!-- It does work at runtime since the files will be located in a jar.  -->
         <property name="mappingJarLocations">
              <list>
                    <value>classpath*:**/services.jar</value>
                    <value>classpath*:**/jbpm-pvm-*.jar</value>
               </list>
         </property>

          <property name="hibernateProperties">
               <props>
                    <prop key="hibernate.dialect">
                         org.hibernate.dialect.Oracle10gDialect
                    </prop>
                    <prop key="hibernate.show_sql">false</prop>
                    <prop key="hibernate.generate_statistics">false</prop>
               </props>
          </property>
          
          <property name="configLocation" value="classpath:jbpm.hibernate.cfg.xml" />
          
          <property name="eventListeners">
               <map>
                    <entry key="merge">
                         <bean
                              class="org.springframework.orm.hibernate3.support.IdTransferringMergeEventListener" />
                    </entry>
               </map>
          </property>
     </bean>

     <bean id="transactionManager"
          class="org.springframework.orm.hibernate3.HibernateTransactionManager">
          <property name="sessionFactory" ref="sessionFactory" />
     </bean>

     <bean id="hibernateTemplate"
          class="org.springframework.orm.hibernate3.HibernateTemplate">
          <property name="sessionFactory">
               <ref bean="sessionFactory" />
          </property>
     </bean>

       <bean id="namedParameterJdbcTemplate" class="org.springframework.jdbc.core.namedparam.NamedParameterJdbcTemplate">
          <constructor-arg ref="dataSource"/>
     </bean>



    <bean id="basePaBO" abstract="true" parent="baseBO">
        <property name="resources">
            <ref bean="resourcePa" />
        </property>
    </bean>

    <bean id="baseProcessPaBO" abstract="true" parent="basePaBO">
        <property name="processEngine">
            <ref bean="processEngine" />
        </property>
    </bean>

    <bean id="boNpcPaProcess" parent="baseTransactionProxy" scope="prototype">
        <property name="target">
            <bean class="com.premierinc.sca.pa.business.NpcPriceActivationImpl" parent="baseProcessPaBO">

            </bean>
        </property>
    </bean>



 
I did see some examples where a "spring.cfg" string was set in the jBPM configuration.  Is this maybe needed?
 
<string name="spring.cfg" value="applicationContext-services-pa.xml" />

 
Any help would be GREATLY appreciated!
 
Thanks in advance,
Ken

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