Peter Brewer [https://community.jboss.org/people/pbrewer_uk] created the 
discussion

"Re: jBPM 5.2 setup on Jboss7.1b"

To view the discussion, visit: https://community.jboss.org/message/646517#646517

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I had this same issue and solved it by updating the orm.xml file with the 
following:

<?xml version="1.0" encoding="UTF-8"?>
<entity-mappings version="2.0" 
xmlns="http://java.sun.com/xml/ns/persistence/orm"; 
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"; 
xsi:schemaLocation="http://java.sun.com/xml/ns/persistence/orm 
http://java.sun.com/xml/ns/persistence/orm_2_0.xsd";>
<named-native-query name="ProcessInstancesWaitingForEvent" 
result-set-mapping="ProcessInstancesWaitingForEvent.mapping">
    <query>
    select distinct
      p.InstanceId
    from
      ProcessInstanceInfo p
    join
      EventTypes e on p.InstanceId=e.InstanceId 
    and
      :type = e.eventTypes
    </query>
</named-native-query> 
<sql-result-set-mapping name="ProcessInstancesWaitingForEvent.mapping">
  <column-result name="InstanceId" />
</sql-result-set-mapping>
<entity class="org.jbpm.persistence.processinstance.ProcessInstanceInfo">
    <attributes>
        <element-collection name="eventTypes">
            <collection-table name="EventTypes">
                <join-column name="InstanceId" />
            </collection-table>
        </element-collection>
    </attributes>
</entity>

</entity-mappings>



What I'm not sure about is how to restore state once its been saved.

HTH

Pete
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