Issue with Persistence.createEntityManager

timvw · **Posted:** Mon Jan 23, 2006 1:22 pm

Hello, i'm using the latest (released) versions of hibernate, annotations and entitymanager.

The following code results in an error:

Code:

<%@ page import="javax.persistence.*" %>
<%
EntityManagerFactory emf = Persistence.createEntityManagerFactory("regapan");
%>

Quote:

java.lang.NullPointerException
at org.hibernate.ejb.packaging.PersistenceXmlLoader.deploy(PersistenceXmlLoader.java:68)
at org.hibernate.ejb.Ejb3Configuration.createEntityManagerFactory(Ejb3Configuration.java:139)
at org.hibernate.ejb.HibernatePersistence.createEntityManagerFactory(HibernatePersistence.java:103)
at javax.persistence.Persistence.createEntityManagerFactory(Persistence.java:37)
at javax.persistence.Persistence.createEntityManagerFactory(Persistence.java:27)
at _jsp._test__jsp._jspService(test.jsp:3)
at com.caucho.jsp.JavaPage.service(JavaPage.java:60)
......

The following code doesn't result in an error:

Code:

<%@ page import="java.util.*, javax.persistence.*" %>
<%
Map cfg = new HashMap();
EntityManagerFactory emf = Persistence.createEntityManagerFactory("regapan", cfg);
%>

I've looked in the source, and i don't really understand why there is a call to log.fatal in org.hibernate.ejb.packaging.PersistenceXmlLoader.java line 101.

xhfdc · **Joined:** Mon Jan 23, 2006 5:53 pm **Posts:** 1

I tried this, and it worked

Persistence.createEntityManagerFactory(persistenceUnitName,new HashMap())

emmanuel · **Posted:** Mon Jan 23, 2006 7:49 pm

Damn, a hole in my test suite. This is fixed in CVS thanks.

Gengis · **Joined:** Wed Jun 15, 2005 9:18 am **Posts:** 11

Hello,

According to the cvs, the deploy method of PersistenceXmlLoader still throws a nullPointerException if the overrides parameter is null.

Code:

public static List<PersistenceMetadata> deploy(URL url, Map overrides) throws Exception {
...
String provider = (String) overrides.get( HibernatePersistence.PROVIDER );
...
}

Is it a deliberate choice ?

Thanks,

Gengis,

jagula · **Posted:** Tue Feb 07, 2006 12:32 pm

Emmanual, I had submitted EJB-124 in JIRA for this on Feb 3. Should I have put on user forum in addition/instead?

emmanuel · **Posted:** Wed Feb 08, 2006 2:32 pm

Gengis wrote:

Hello,

According to the cvs, the deploy method of PersistenceXmlLoader still throws a nullPointerException if the overrides parameter is null.

Code:

public static List<PersistenceMetadata> deploy(URL url, Map overrides) throws Exception {
...
String provider = (String) overrides.get( HibernatePersistence.PROVIDER );
...
}

HEM has more than a single class. This is fixed in CVS with a unit test

emmanuel · **Posted:** Wed Feb 08, 2006 2:33 pm

jagula wrote:

Emmanual, I had submitted EJB-124 in JIRA for this on Feb 3. Should I have put on user forum in addition/instead?

this is a dupe of EJB-114, I was wayyyyy faster than you ;-)