[jboss-user] [EJB 3.0] - Re: Web Beans + JPA

[epbernard]

https://anonsvn.jboss.org/repos/hibernate/core/trunk/entitymanager/src/main/java/org/hibernate/ejb/packaging/PersistenceXmlLoader.java

is your best shot.

Enumeration<URL> xmls = Thread.currentThread()
  | 					.getContextClassLoader()
  | 					.getResources( "META-INF/persistence.xml" );
  | if ( ! xmls.hasMoreElements() ) {
  | 	log.info( "Could not find any META-INF/persistence.xml file in the classpath");
  | }
  | while ( xmls.hasMoreElements() ) {
  | 	URL url = xmls.nextElement();
  | 	log.trace( "Analysing persistence.xml: {}", url );
  | 	List<PersistenceMetadata> metadataFiles = PersistenceXmlLoader.deploy(
  | 					url,
  | 					integration,
  | 					cfg.getEntityResolver(),
  | 					PersistenceUnitTransactionType.JTA );	//might be RESOURCE_LOCAL in EE?	
  | 	for ( PersistenceMetadata metadata : metadataFiles ) {
  | 		String provider = metadata.getProvider(); //could be used for a shortcut if Hibernate
  | 		List<String> classes = metadata.getClasses();
  | 		//same for mappingFiles can be orm.xml or hbm.xml with Hibernate
  | 		Set<String> jarFiles = ...; //need to scan these for @Entity @Embedded @MappedSuperclass
  | 		boolean exclude = metadata.getExcludeUnlistedClasses();
  | 		//if exclude == true => do not scan @Entity @Embedded @MappedSuperclass in the *main* jar
  | 		
  | 	}
  | }

you will also need orm.xml parsing and check for , <mapped-superclass > and 
consider  as the default package.



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