[jboss-user] [JBoss jBPM] - Re: SessionFactory creation

[iantimothy]

Hello.  The SessionFactory would are referring to is part of Hibernate.  You can read up on the Hibernate site how to create a SessionFactory.

For example, you could put the hibernate.cfg.xml file at the root of your classpath.

Then to get a SessionFactory, you can use this line of code:

SessionFactory sf = new Configuration().configure().buildSessionFactory();
There is also another way to get a SessionFactory.

In your jbpm.cfg.xml, there should be this line

<service name="persistence" 
  | factory="org.jbpm.persistence.db.DbPersistenceServiceFactory"/>

If there isn't, add it in between <jbpm-context></jbpm-context>

Add jbpm.cfg.xml to the root of your classpath.

You could then create a class with the a static field. i.e.:

private static final JbpmConfiguration jbpmConfiguration;

you can use a static initalizer in this class to create the JbpmConfiguration object.i.e.:

static {
  |   try {
  |     jbpmConfiguration = JbpmConfiguration.getInstance();
  |   } catch (Throwable ex) {
  |     throw new ExceptionInInitializerError(ex);
  |   }
  | }

and write a static method to get this object.i.e.:

public static JbpmConfiguration getJbpmConfiguration() {
  |   return jbpmConfiguration;
  | }

You could call this class something like JbpmUtil

You could use a listener to create an instance of this object when your application starts.

>From then on, when you need a SessionFactory, you can use these lines of code:

JbpmConfiguration jbpmConfig = JbpmUtil.getJbpmConfiguration();
  | JbpmContext jbpmContext = jbpmConfig.createJbpmContext();
  | SessionFactory sessionFactory = jbpmContext.getSessionFactory();

Hopefully this helps.  This is the way it worked for me to integrate jbpm, hibernate and my own application.

Hopefully some of the seniors can add to this.

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