Problem on commitTransaction, plz help

[sammycxm]

I'm using MS SQL, when I want to save the process instance and call the commitTransaction() method, it gives follow Exception:

16:53:26,546 ERROR JbpmSession : org.hibernate.TransientObjectException: object references an unsaved transient instance - save the transient instance before flushing: org.jbpm.graph.node.TaskNode

 at org.hibernate.type.EntityType.isDirty(EntityType.java:216)
 at org.hibernate.type.TypeFactory.findDirty(TypeFactory.java:412)
 at org.hibernate.persister.entity.BasicEntityPersister.findDirty(BasicEntityPersister.java:2538)
 at org.hibernate.event.def.DefaultFlushEntityEventListener.dirtyCheck(DefaultFlushEntityEventListener.java:344)
 at org.hibernate.event.def.DefaultFlushEntityEventListener.onFlushEntity(DefaultFlushEntityEventListener.java:108)
 at org.hibernate.event.def.AbstractFlushingEventListener.flushEntities(AbstractFlushingEventListener.java:190)
 at org.hibernate.event.def.AbstractFlushingEventListener.flushEverythingToExecutions(AbstractFlushingEventListener.java:70)
 at org.hibernate.event.def.DefaultFlushEventListener.onFlush(DefaultFlushEventListener.java:26)
 at org.hibernate.impl.SessionImpl.flush(SessionImpl.java:730)
 at org.jbpm.db.JbpmSession.commitTransaction(JbpmSession.java:102)
 ... 1 more

here is my code to save process instance:

 JbpmSession jbpmSession = jbpmSessionFactory.openJbpmSession();

 jbpmSession.beginTransaction();

 jbpmSession.getGraphSession().saveProcessInstance(processInstance);

 jbpmSession.commitTransaction();

 jbpmSession.close();

my hibernate.properties file:

hibernate.dialect=org.hibernate.dialect.SQLServerDialect
hibernate.connection.driver_class=net.sourceforge.jtds.jdbc.Driver
hibernate.connection.url=jdbc:jtds:sqlserver://localhost:1433/jbpmtest;sql.enforce_strict_size=true
hibernate.connection.username=sa
hibernate.connection.password=root123
hibernate.transaction.factory_class org.hibernate.transaction.JDBCTransactionFactory
hibernate.cache.provider_class org.hibernate.cache.EhCacheProvider
hibernate.show_sql=true
hibernate.c3p0.min_size=5
hibernate.c3p0.max_size=20
hibernate.c3p0.timeout=1800
hibernate.c3p0.max_statements=50
hibernate.query.substitutions=true 1, false 0
hibernate.jdbc.use_scrollable_resultset=true
hibernate.jdbc.use_streams_for_binary=true
jta.UserTransaction=jndi

Has anybody can help me?
thanks

[sammycxm]

I have solved this problem, it works fine.

But, why can't I save the process instance which is create by the process definition read from xml file?

[kukeltje]

can you post howe you solved it? Might be of interest to others

[tom.baeyens]

let me quess: you created a process definition at runtime. without fetching it from the database, right ?

if you don't fetch the process definition from the database, you must save it into the database before you save a process instance.

saving a process instance cascades through all runtime objects (the process instance related objects). but saving a process instance does not cascade to the process definition objects.

regards, tom.

[tom.baeyens]

i honestly didn't read your answer before i posted :-)

But, why can't I save the process instance which is create by the process definition read from xml file?

because a process instance has references to its definition. e.g. how to store the foreign key reference from a token to its current node ?

regards, tom.