Re: AW: AW: How to use JBPM with openEJB?

Mon, 16 Mar 2009 12:52:21 -0700
On Mar 16, 2009, at 3:30 AM, <[email protected]> <[email protected] > wrote: 


Hi David,

I tried your suggesting, but without success.


The problem is that the datasource is'nt really injected into the  
SLSB. All happened in the jbpmConfiguration.createJbpmContext()  
method.
The InitialContext get always some properties, as far as I see in  
the debug view, so it always use the constructor with the parameter.



Right, the @Resource declaration at the class level (or equivalent in  
xml) doesn't involve any injection at all and is a way to declare  
something for lookup.



I can guarantee that if the SLSB is calling the  
jbpmConfiguration.createJbpmContext() method, that this method will be  
able to lookup resources from SLSB's JNDI environment.



As far as constructing the InitialContext with properties, it isn't  
the properties instance that is causing an issue, but the entry  
"java.naming.factory.initial".  When that is specified pointing to the  
LocalInitialContextFactory, you end up with an ejb-only view for local  
clients.  If that is removed, the view should be the "java:comp/env"  
that the SLSB sees -- assuming the  
jbpmConfiguration.createJbpmContext() method is called via the SLSB.



If you can post the ejb-jar.xml for the SLSB and the hibernate config,  
that would be helpful.




-David




-----Ursprüngliche Nachricht-----
Von: David Blevins [mailto:[email protected]]
Gesendet: Freitag, 13. März 2009 09:33
An: [email protected]
Betreff: Re: AW: How to use JBPM with openEJB?


When running in a SLSB you should be able to access it's JNDI  
namespace.  To do that the InitialContext needs to be constructed  
with no (or empty) properties.  Then you should be able add a  
<resource-

ref> like:

  <resource-ref>
    <res-ref-name>TestDS</res-ref-name>
    <res-type>javax.sql.DataSource</res-type>
  </resource-ref>

And then look it up from within the SLSB with 'java:comp/env/TestDS'


-David



On Mar 12, 2009, at 4:47 AM, <[email protected]> <[email protected] 
  > wrote:



It's me again,

I tried to go a step back and want to get only the jbpm SLSB to run.
After I hack against the issue
https://issues.apache.org/jira/browse/OPENEJB-971
, I can start up the ejb components of jbpm in openejb:

2009-03-12 11:40:21,259  INFO OpenEJB.startup:70 - Deployed
Application(path=classpath.ear)
2009-03-12 11:40:21,259 DEBUG OpenEJB.startup:82 -
Containers        : 5
2009-03-12 11:40:21,259 DEBUG OpenEJB.startup:82 - Type Container ID
2009-03-12 11:40:21,259 DEBUG OpenEJB.startup:82 -    CMP ENTITY  My
CMP Container
2009-03-12 11:40:21,259 DEBUG OpenEJB.startup:82 -    STATEFUL    My
Stateful Container
2009-03-12 11:40:21,259 DEBUG OpenEJB.startup:82 -    MESSAGE     My
MDB Container
2009-03-12 11:40:21,259 DEBUG OpenEJB.startup:82 -    BMP ENTITY  My
BMP Container
2009-03-12 11:40:21,275 DEBUG OpenEJB.startup:82 -    STATELESS   My
Stateless Container
2009-03-12 11:40:21,275 DEBUG OpenEJB.startup:82 -
Deployments       : 6
2009-03-12 11:40:21,275 DEBUG OpenEJB.startup:82 - Type Deployment ID
2009-03-12 11:40:21,275 DEBUG OpenEJB.startup:82 -    MESSAGE
JobListenerBean
2009-03-12 11:40:21,275 DEBUG OpenEJB.startup:82 -    CMP_ENTITY
TimerEntityBean
2009-03-12 11:40:21,275 DEBUG OpenEJB.startup:82 -    STATELESS
TimerServiceBean
2009-03-12 11:40:21,275 DEBUG OpenEJB.startup:82 -    STATELESS
CommandServiceBean
2009-03-12 11:40:21,275 DEBUG OpenEJB.startup:82 -    MESSAGE
CommandListenerBean
2009-03-12 11:40:21,275 DEBUG OpenEJB.startup:82 -    STATEFUL
JbpmFacadeImpl
2009-03-12 11:40:21,275 DEBUG OpenEJB.startup:82 -
SecurityService   :
org.apache.openejb.core.security.SecurityServiceImpl
2009-03-12 11:40:21,275 DEBUG OpenEJB.startup:82 -
TransactionManager:
org.apache.geronimo.transaction.manager.GeronimoTransactionManager
2009-03-12 11:40:21,290 DEBUG OpenEJB.startup:82 - OpenEJB Container
System ready.


But when I access the SLSB I got finally into the same exception as  
in

my first post, when the jbpm context is built:

2009-03-12 12:46:09,068 FATAL
org.hibernate.connection.DatasourceConnectionProvider:55 - Could not
find datasource: java:openejb/Resource/TestDS
javax.naming.NameNotFoundException: Name "java:openejb/Resource/
TestDS" not found.
      at
org
.apache.openejb.core.ivm.naming.IvmContext.federate(IvmContext.java:
172)
      at
org.apache.openejb.core.ivm.naming.IvmContext.lookup(IvmContext.java:
129)
      at javax.naming.InitialContext.lookup(InitialContext.java:351)
      at
org
.hibernate
.connection
.DatasourceConnectionProvider
.configure(DatasourceConnectionProvider.java:52)
      at
org
.hibernate
.connection
.ConnectionProviderFactory
.newConnectionProvider(ConnectionProviderFactory.java:124)
      at
org
.hibernate
.connection
.ConnectionProviderFactory
.newConnectionProvider(ConnectionProviderFactory.java:56)
      at
org
.hibernate
.cfg.SettingsFactory.createConnectionProvider(SettingsFactory.java:
414)
      at
org.hibernate.cfg.SettingsFactory.buildSettings(SettingsFactory.java:
62)
      at

org.hibernate.cfg.Configuration.buildSettings(Configuration.java: 
2073)

      at
org
.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:
1298)
      at
org
.jbpm
.persistence
.db
.DbPersistenceServiceFactory
.getSessionFactory(DbPersistenceServiceFactory.java:105)
      at
org
.jbpm
.persistence
.db.DbPersistenceService.getSessionFactory(DbPersistenceService.java:
95)
      at
org
.jbpm
.persistence
.jta
.JtaDbPersistenceService
.isJtaTransactionInProgress(JtaDbPersistenceService.java:64)
      at
org
.jbpm
.persistence
.jta.JtaDbPersistenceService.<init>(JtaDbPersistenceService.java:46)
      at
org
.jbpm
.persistence
.jta
.JtaDbPersistenceServiceFactory
.openService(JtaDbPersistenceServiceFactory.java:63)
      ...

There is some part in the hibernate code to get the InitialContext:

package org.hibernate.util;
...
public final class NamingHelper
{

  ...

  public static InitialContext getInitialContext(Properties props)
      throws NamingException
  {
      Hashtable hash = getJndiProperties(props);
      log.info("JNDI InitialContext properties:" + hash);
      try
      {
          return hash.size() != 0 ? new InitialContext(hash) : new
InitialContext();
      }
      catch(NamingException e)
      {
          log.error("Could not obtain initial context", e);
          throw e;
      }
  }
  ...

I get here an IvmContext, but it seems that this context doesn't
contains the JNDI information as the context I've build to initialize
openEJB.

So I'm am lost again at the same part as before.

Regards
Marco

-----Ursprüngliche Nachricht-----
Von: [email protected] [mailto:[email protected]]
Gesendet: Mittwoch, 11. März 2009 13:55
An: [email protected]
Betreff: AW: How to use JBPM with openEJB?

Hi David,

Thank you for your response.

I saw also that there is a stateless session bean since some version
of jbpm, but we have already a session facade to access our jbpm
context. The part of our application using jbpm is tied more to the
jbpm functionalities as the SLSB provides. Therefore it is not
possible for us to move here to the jbpm SLSB, without huge impact on
the existing business logic. The code base we use, started as a
standalone application but are now going to JEE.

In the code of the jbpm SLSB I saw that we were already used nearly

similar code to access the jbpm context. The problem is that jbpm  
uses

an own hibernate session (version 3.2 of jbpm is tied to hibernate).
This session is initialized within

JbpmConfiguration.getInstance().createJbpmContext(). You can  
configure

it via the jbpm.cfg.xml and hibernate.cfg.xml (settings of database
properties, transaction management etc.) which was the way if have
tried and which results in the error of my first post.

An alternative way is to set the hibernate session after the jbpm
context was created with jbpmContext.setSession(session). At the

moment I investigate this way also, but there are problems with  
closed

session after method invokation, and I am not sure if this way is in
an save transaction state.

I hope that I have descripted our situation more clearly.

Regards,
Marco


-----Ursprüngliche Nachricht-----
Von: David Blevins [mailto:[email protected]]
Gesendet: Dienstag, 10. März 2009 21:15
An: [email protected]
Betreff: Re: How to use JBPM with openEJB?

Hi Marco,

The looking up of things from java:openejb is one of those areas that
needs improvement.  Going to see if I can't get somewhere with that
now.


I had a quick look at the JBMP docs and it looks like they support  
two

modes, one where it runs as a standalone java application and one
where it runs as a stateless ejb inside an ejb container.  From the
config you posted I'm guessing you're running it as a standalone
application with OpenEJB embedded inside?  Should be fine either way,
just want to make sure I understand the goal as there are likely
different options one way vs the other.

-David

On Mar 9, 2009, at 7:10 AM, <[email protected]> 
<[email protected]

wrote:



Hi experts,

I try to get JBPM working with openEJB. The problem is that JBPM
cannot get the datasource for the hibernate session.
As far as I found out is that the JBPM uses an own InitialContext.
I try to configure the same initial context properties as for the
direct initial context lookup like (part of the hibernate.cfg.xml):

<hibernate-configuration>
<session-factory>
 <property name="hibernate.connection.datasource">java:openejb/
Resource/TestDS</property>

 <property
name
=
"hibernate
.jndi
.java
.naming
.factory
.initial">org.apache.openejb.client.LocalInitialContextFactory</
property>
 <property
name="hibernate.jndi.openejb.deployments.classpath.ear">true</
property>
 <property
name="hibernate.jndi.openejb.jndiname.format">{deploymentId}/
{interfaceType.annotationName}</property>
 <property name="hibernate.jndi.openejb.altdd.prefix">test</
property>
 <property
name="hibernate.jndi.openejb.validation.output.level">VERBOSE</
property>

 ...

Also I found out the the database is registered under "java:openejb/
Resource/TestDS", where I can access it via lookup in the initial
context, but it's not there as jbpm build this session.

Here also a part of the stack trace:

2009-03-09 15:03:51,334  INFO org.hibernate.util.NamingHelper:26 -
JNDI InitialContext properties:
{java.naming.factory.initial=org.apache.openejb.clie
nt.LocalInitialContextFactory,
openejb.validation.output.level=VERBOSE, openejb.altdd.prefix=test,
openejb.jndiname.format={deploymentId}/{interfaceTy
pe.annotationName}, openejb.deployments.classpath.ear=true}
2009-03-09 15:03:51,334 FATAL
org.hibernate.connection.DatasourceConnectionProvider:55 - Could not
find datasource: java:openejb/Resource/TestDS
javax.naming.NameNotFoundException: Name "java:openejb/Resource/
TestDS" not found.
     at
org
.apache.openejb.core.ivm.naming.IvmContext.federate(IvmContext.java:
172)
     at

org 
.apache.openejb.core.ivm.naming.IvmContext.lookup(IvmContext.java:

129)
     at javax.naming.InitialContext.lookup(InitialContext.java:351)
     at
org
.hibernate
.connection
.DatasourceConnectionProvider
.configure(DatasourceConnectionProvider.java:52)
     at
org
.hibernate
.connection
.ConnectionProviderFactory
.newConnectionProvider(ConnectionProviderFactory.java:124)
     at
org
.hibernate
.connection
.ConnectionProviderFactory
.newConnectionProvider(ConnectionProviderFactory.java:56)
     at
org
.hibernate
.cfg.SettingsFactory.createConnectionProvider(SettingsFactory.java:
414)
     at

org 
.hibernate.cfg.SettingsFactory.buildSettings(SettingsFactory.java:

62)
     at
org.hibernate.cfg.Configuration.buildSettings(Configuration.java:
2073)
     at
org
.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:
1298)
     at
org
.jbpm
.persistence
.db
.DbPersistenceServiceFactory
.getSessionFactory(DbPersistenceServiceFactory.java:105)
     at
org
.jbpm
.persistence

.db 
.DbPersistenceService.getSessionFactory(DbPersistenceService.java:

95)
     at
org
.jbpm
.persistence
.jta
.JtaDbPersistenceService
.isJtaTransactionInProgress(JtaDbPersistenceService.java:68)
     at
org
.jbpm
.persistence
.jta.JtaDbPersistenceService.<init>(JtaDbPersistenceService.java:46)
     at
org
.jbpm
.persistence
.jta
.JtaDbPersistenceServiceFactory
.openService(JtaDbPersistenceServiceFactory.java:66)
     at org.jbpm.svc.Services.getService(Services.java:177)
     at org.jbpm.svc.Services.getPersistenceService(Services.java:
231)
     at
org.jbpm.JbpmContext.getPersistenceService(JbpmContext.java:705)
     at org.jbpm.JbpmContext.getGraphSession(JbpmContext.java:638)


I'm using openEJB 3.1 and JBPM 3.2.5.SP2.
I hope someone knows how to use JBPM within openEJB or can give me a
hint.

Regards
Marco


































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