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From "Matthieu Riou" <matthieu.r...@gmail.com>
Subject OpenJPA & Transaction configuration
Date Thu, 01 Mar 2007 02:28:55 GMT
Hi,

I'm going back at the OpenJPA implementation for the Apache ODE project and
am still having problems with the setup. Whan I try to persist a new object
I get an exception "Attempt to persist detached object". I guess the when I
instantiate my object OpenJPA can't locate its transactional context or
something related therefore assuming that the object is instantiated outside
of any persistent context.

Here is the code that creates the EntityManagerFactory:

        HashMap<String, Object> propMap = new HashMap<String,Object>();
        propMap.put("openjpa.Log", "DefaultLevel=TRACE");
        propMap.put("openjpa.jdbc.DBDictionary", "
org.apache.openjpa.jdbc.sql.DerbyDictionary");
        propMap.put("openjpa.ManagedRuntime", new TxMgrProvider());
        propMap.put("openjpa.ConnectionFactory", _ds);
        propMap.put("openjpa.ConnectionFactoryMode", "managed");
        propMap.put("openjpa.Log", "DefaultLevel=TRACE");
        _emf = Persistence.createEntityManagerFactory("ode-dao", propMap);

And here is my object instantiation code:

        ProcessDAOImpl ret = new ProcessDAOImpl(pid,type,guid,this,version);
        System.out.println("detached " +
((PersistenceCapable)ret).pcIsDetached());
        _em.persist(ret);

My little debugging statement outputs "true". I've reproduced the full log
below. I've also encapsulated to transaction manager and the transaction to
check whether OpenJPA was getting the transaction and registering a
synchronizer properly. It seems to be doing so (the log statements are just
a couple lines above the '.....'). I've removed all the mapping logs just to
avoid making this too lengthy.

Any idea of what the problem could be? I'm kind of stuck on this as it's
hard to debug the enhanced code that gets called when I instantiate my
process object.

DEBUG - ODEMessageReceiver.receive(47) | Received message for
helloWorld.hello
DEBUG - ODEService.onAxisMessageExchange(96) | Starting transaction.
DEBUG - BpelEngineImpl.route(237) | Routed: svcQname {
http://ode/bpel/unit-test.wsdl}HelloService --> BpelProcess[{
http://ode/bpel/unit-test}HelloWorld2-1]
29603  ode-dao  INFO   [http-8080-Processor25] openjpa.Runtime - Starting
OpenJPA 0.9.7-incubating-SNAPSHOT
29604  ode-dao  TRACE  [http-8080-Processor25] openjpa.Runtime - Properties:
openjpa.EntityManagerFactory: default
openjpa.DataCache: false
openjpa.MetaDataFactory: jpa(Types=
org.apache.ode.dao.jpa.ActivityRecoveryDAOImpl
;org.apache.ode.dao.jpa.CorrelationSetDAOImpl;org.apache.ode.dao.jpa.CorrelatorDAOImpl;org.apache.ode.dao.jpa.EventDAOImpl;org.apache.ode.dao.jpa.FaultDAOImpl;org.apache.ode.dao.jpa.MessageDAOImpl;org.apache.ode.dao.jpa.MessageExchangeDAOImpl;org.apache.ode.dao.jpa.MessageRouteDAOImpl;org.apache.ode.dao.jpa.PartnerLinkDAOImpl;org.apache.ode.dao.jpa.ProcessDAOImpl;org.apache.ode.dao.jpa.ProcessInstanceDAOImpl;org.apache.ode.dao.jpa.ScopeDAOImpl;org.apache.ode.dao.jpa.XmlDataDAOImpl)
openjpa.InverseManager: false
openjpa.ReadLockLevel: read
openjpa.DataCacheManager: default
openjpa.jdbc.SubclassFetchMode: join
openjpa.jdbc.UpdateManager: default
openjpa.jdbc.SynchronizeMappings: false
openjpa.NontransactionalRead: true
openjpa.QueryCompilationCache: true
openjpa.MaxFetchDepth: -1
openjpa.RetainState: true
openjpa.DynamicDataStructs: false
openjpa.BrokerFactory: jdbc
openjpa.WriteLockLevel: write
openjpa.ManagedRuntime:
org.apache.ode.dao.jpa.BPELDAOConnectionFactoryImpl$TxMgrProvider
openjpa.jdbc.EagerFetchMode: parallel
openjpa.RestoreState: immutable
openjpa.jdbc.SchemaFactory: dynamic
openjpa.LockManager: version
openjpa.BrokerImpl: default
openjpa.NontransactionalWrite: true
openjpa.MetaDataRepository: default
openjpa.Log: true(DefaultLevel=TRACE)
openjpa.jdbc.ResultSetType: forward-only
openjpa.AutoDetach:
openjpa.ConnectionRetainMode: on-demand
openjpa.SavepointManager: in-mem
openjpa.jdbc.DBDictionary: derby
openjpa.Optimistic: true
openjpa.ConnectionFactoryMode: managed
openjpa.Sequence: table
openjpa.FetchGroups: default
openjpa.jdbc.Schemas:
openjpa.Id: ode-dao
openjpa.OrphanedKeyAction: log
openjpa.FlushBeforeQueries: true
openjpa.AutoClear: datastore
openjpa.Compatibility: default
openjpa.DetachState: loaded
openjpa.jdbc.LRSSize: query
openjpa.Multithreaded: false
openjpa.FetchBatchSize: -1
openjpa.jdbc.SQLFactory: default
openjpa.IgnoreChanges: false
openjpa.jdbc.MappingDefaults: jpa
openjpa.TransactionMode: local
openjpa.RetryClassRegistration: false
openjpa.jdbc.FetchDirection: forward
openjpa.ClassResolver: default
openjpa.LockTimeout: -1
openjpa.DataCacheTimeout: -1
openjpa.QueryCache: true
openjpa.jdbc.DriverDataSource: simple
openjpa.jdbc.TransactionIsolation: default
openjpa.ProxyManager: default
29604  ode-dao  TRACE  [http-8080-Processor25] openjpa.MetaData - Using
metadata factory "
org.apache.openjpa.persistence.jdbc.PersistenceMappingFactory@1742ad8".
29604  ode-dao  INFO   [http-8080-Processor25] openjpa.jdbc.JDBC - Using
dictionary class "org.apache.openjpa.jdbc.sql.DerbyDictionary".
WARN - BPELDAOConnectionFactoryImpl$DebugTxMgr.getTransaction(130) | JPA get
transaction
WARN - BPELDAOConnectionFactoryImpl$DebugTx.registerSynchronization(179) |
Synchronization registration on org.apache.openjpa.kernel.BrokerImpl
WARN - BPELDAOConnectionFactoryImpl$DebugTx.registerSynchronization(179) |
Synchronization registration on
org.apache.openjpa.kernel.AbstractBrokerFactory$RemoveTransactionSync
29610  ode-dao  INFO   [http-8080-Processor25] openjpa.MetaData - Found 13
classes with metadata in 0 milliseconds.
29834  ode-dao  TRACE  [http-8080-Processor25] openjpa.MetaData - Loading
metadata for "class org.apache.ode.dao.jpa.MessageExchangeDAOImpl" under
mode "[META][QUERY]".
..........
..........
30386  ode-dao  TRACE  [http-8080-Processor25] openjpa.jdbc.SQL - <t
9601173, conn 16542562> executing prepstmnt 6493766 SELECT t0.ID, t0.VERSION,
t0.GUID, t0.NUMBER_OF_INSTANCES, t0.PROCESS_ID, t0.PROCESS_TYPE FROM
ODE_PROCESS t0 WHERE (t0.PROCESS_ID = ?) [params=(String) {
http://ode/bpel/unit-test}HelloWorld2-1]
30387  ode-dao  TRACE  [http-8080-Processor25] openjpa.jdbc.SQL - <t
9601173, conn 16542562> [0 ms] spent
30388  ode-dao  TRACE  [http-8080-Processor25] openjpa.jdbc.JDBC - <t
9601173, conn 16542562> [0 ms] close
detached true
WARN - BPELDAOConnectionFactoryImpl$DebugTxMgr.getTransaction(130) | JPA get
transaction
ERROR - BpelServerImpl.bounceProcessDAO(334) | DbError
<2|false|0.9.7-incubating-SNAPSHOT>
org.apache.openjpa.persistence.EntityExistsException: Attempt to persist
detached object "org.apache.ode.dao.jpa.ProcessDAOImpl@c195e3".
FailedObject: org.apache.ode.dao.jpa.ProcessDAOImpl@c195e3
    at org.apache.openjpa.kernel.BrokerImpl.persist(BrokerImpl.java:2346)
    at org.apache.openjpa.kernel.BrokerImpl.persist(BrokerImpl.java:2204)
    at org.apache.openjpa.kernel.DelegatingBroker.persist(
DelegatingBroker.java:991)
    at org.apache.openjpa.persistence.EntityManagerImpl.persist(
EntityManagerImpl.java:525)
    at org.apache.ode.dao.jpa.BPELDAOConnectionImpl.createProcess(
BPELDAOConnectionImpl.java:78)

Thanks!
Matthieu

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