How to propagate the execution for a Node ?

[ricardo.almeida]

Hi,

I have the following process definition:

<?xml version="1.0" encoding="UTF-8"?>
<process-definition xmlns="urn:jbpm.org:jpdl-3.2" name="spa-process">

 <start-state name="Start">
 <transition to="publish_node" name="to_publish_node"/>
 </start-state>

 <node name="publish_node">
 <action expression="#{publishManager.publish}"/>
 <transition to="input_data" name="to_input_data"/>
 </node>

 <task-node name="input_data">
 <transition to="published" name="to_published"/>
 </task-node>

 <end-state name="published"/>
</process-definition>

I need to know how to propagate the execution of the process after the execution of the method 'publish()', in order to go to task 'input_date'. I already tried a lot of different ways, but none of them worked:

I tried to Inject the BusinessProcess in the PublishManager object:

@In
private BusinessProcess businessProcess;

and in the end of publish() method calls:

businessProcess.transition("to_input_data");

but when this line is executed I got the exception (this is the bottom of stack trace, the whole thing is enormous):

Caused by: org.hibernate.exception.GenericJDBCException: Cannot open connection
 at org.hibernate.exception.SQLStateConverter.handledNonSpecificException(SQLStateConverter.java:103)
 at org.hibernate.exception.SQLStateConverter.convert(SQLStateConverter.java:91)
 at org.hibernate.exception.JDBCExceptionHelper.convert(JDBCExceptionHelper.java:43)
 at org.hibernate.exception.JDBCExceptionHelper.convert(JDBCExceptionHelper.java:29)
 at org.hibernate.jdbc.ConnectionManager.openConnection(ConnectionManager.java:426)
 at org.hibernate.jdbc.ConnectionManager.getConnection(ConnectionManager.java:144)
 at org.hibernate.jdbc.AbstractBatcher.prepareQueryStatement(AbstractBatcher.java:139)
 at org.hibernate.loader.Loader.prepareQueryStatement(Loader.java:1547)
 at org.hibernate.loader.Loader.doQuery(Loader.java:673)
 at org.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:236)
 at org.hibernate.loader.Loader.loadCollection(Loader.java:1994)
 at org.hibernate.loader.collection.CollectionLoader.initialize(CollectionLoader.java:36)
 at org.hibernate.persister.collection.AbstractCollectionPersister.initialize(AbstractCollectionPersister.java:565)
 at org.hibernate.event.def.DefaultInitializeCollectionEventListener.onInitializeCollection(DefaultInitializeCollectionEventListener.java:60)
 at org.hibernate.impl.SessionImpl.initializeCollection(SessionImpl.java:1716)
 at org.hibernate.collection.AbstractPersistentCollection.initialize(AbstractPersistentCollection.java:344)
 at org.hibernate.collection.AbstractPersistentCollection.read(AbstractPersistentCollection.java:86)
 at org.hibernate.collection.PersistentList.iterator(PersistentList.java:115)
 at org.jbpm.graph.def.GraphElement.findExceptionHandler(GraphElement.java:386)
 at org.jbpm.graph.def.GraphElement.raiseException(GraphElement.java:349)
 ... 203 more
Caused by: org.jboss.util.NestedSQLException: Transaction is not active: tx=TransactionImple < ac, BasicAction: -53dede89:c2e:47a96efb:31 status: ActionStatus.ABORT_ONLY >; - nested throwable: (javax.resource.ResourceException: Transaction is not active: tx=TransactionImple < ac, BasicAction: -53dede89:c2e:47a96efb:31 status: ActionStatus.ABORT_ONLY >)
 at org.jboss.resource.adapter.jdbc.WrapperDataSource.getConnection(WrapperDataSource.java:94)
 at org.hibernate.connection.DatasourceConnectionProvider.getConnection(DatasourceConnectionProvider.java:69)
 at org.hibernate.jdbc.ConnectionManager.openConnection(ConnectionManager.java:423)
 ... 218 more
Caused by: javax.resource.ResourceException: Transaction is not active: tx=TransactionImple < ac, BasicAction: -53dede89:c2e:47a96efb:31 status: ActionStatus.ABORT_ONLY >
 at org.jboss.resource.connectionmanager.TxConnectionManager.getManagedConnection(TxConnectionManager.java:304)
 at org.jboss.resource.connectionmanager.BaseConnectionManager2.allocateConnection(BaseConnectionManager2.java:396)
 at org.jboss.resource.connectionmanager.BaseConnectionManager2$ConnectionManagerProxy.allocateConnection(BaseConnectionManager2.java:842)
 at org.jboss.resource.adapter.jdbc.WrapperDataSource.getConnection(WrapperDataSource.java:88)
 ... 220 more

Any idea of what is wrong or what i should do ?


Thanks,
Ricardo de Almeida

[tom_goring]

Hi,

Is it not just a case of changing:

 <node name="publish_node">
 <action expression="#{publishManager.publish}"/>
 <transition to="input_data" name="to_input_data"/>
 </node>

to

 <node name="publish_node">
 <transition to="input_data">
 <action expression="#{publishManager.publish}"/>
 </transition>
 </node>