BMP remove nullpointerexception in Proxy
Hi,
I am getting a pretty weird problem using BMP and remove. The bean interfaces with Tamino XML database via a DAO, but don't think this is the problem it seems more to be to do with JBoss. Basically, the problem is I've got a client calling a session facade that in turn calls remove() on a BMP entity bean. The remove itself works fine, but I get a NullPointerException somewhere in the "Proxy" that wraps the facade when it is returning to the client. I really cannot see what might be wrong.
My bean is called MasterGroupBean and its remove method is as follows:
/** Removes the document corresponding to this entity from the database
*/
public void ejbRemove()
{
LOGCAT.debug("ejbRemove()");
try
{
MasterGroupDAO dao = getDAO();
MasterGroupValue masterGroup = new MasterGroupValue(m_xmlDocument);
masterGroup.setDateDeleted();
//As you might notice I'm not actually deleting the record from the database,
// just marking it as deleted and doing an update
dao.store( masterGroup.getDocument() );
cleanup(); //This closes any open connections to the database
}
catch(DAOSysException e)
{
throw new EJBException( e.getMessage());
}
LOGCAT.debug("ejbRemove() - END");
}
The client calls this bean via a session facade, called ManageProductFacadeBean, the code in question is:
/** Removes a document from the database
* @param adminLoginInfo The AdminLoginID of the logged-in administrator who owns the document
* @param lMasterGroupID The id of the master group we want to delete
* @throws InvalidPermissionException If the AdminLogin does not have sufficient permissions to
* manage MasterGroups, or the MasterGroup does not belong to the AdminLogin
*/
public void deleteMasterGroup( AdminLoginInfo adminLoginInfo, long lMasterGroupID) throws InvalidPermissionException
{
try
{
//+ Check that the adminLoginInfo can maintain master groups!
MasterGroupLocalHome masterGroupHome = EJBUtil.getMasterGroupLocalHome();
//Attempt to update an existing entity
MasterGroupLocal masterGroup = masterGroupHome.findByPrimaryKey( new MasterGroupPK( lMasterGroupID ) );
//Check that the Document belongs to the adminLoginCompany
if ( masterGroup.getAdminCompanyID() != adminLoginInfo.getAdminCompanyID() )
{
String sErr = "The MasterGroup " + lMasterGroupID + " does not belong to the AdminCompany " + adminLoginInfo.getAdminCompanyID();
LOGCAT.warn( sErr );
throw new InvalidPermissionException( sErr );
}
LOGCAT.debug("Remove");
masterGroup.remove();
masterGroup = null; //I get the same error without setting this to null
LOGCAT.debug("removed");
}
catch(FinderException e)
{
//Couldn't find the MasterGroup we want to remove, which is fine
}
catch(javax.ejb.RemoveException e)
{
throw new EJBException(e.getMessage());
}
catch(javax.naming.NamingException e)
{
throw new EJBException(e.getMessage());
}
}
The client code (ManageProductsAction) is as follows:
ManageProductFacadeHome manProductFacadeHome = EJBUtil.getManageProductFacadeHome();
ManageProductFacade manProductFacade = manProductFacadeHome.create();
LOGCAT.debug("Calling remove");
manProductFacade.deleteMasterGroup( adminLoginInfo, lMasterGroupID);
LOGCAT.debug("Called remove");
The output of my log is as follows:
[DEBUG,ManageProductsAction] deleteMasterGroup
[DEBUG,ManageProductsAction] Calling remove
[DEBUG,ManageProductFacadeBean] Remove
[DEBUG,MasterGroupBean] ejbStore()
[DEBUG,MasterGroupBean] ejbStore() - END
[DEBUG,MasterGroupBean] ejbRemove()
[DEBUG,MasterGroupBean] ejbRemove() - END
[DEBUG,ManageProductFacadeBean] removed
[DEBUG,Log4jLogger] ENTER: com.softwareag.common.instrumentation.logging.Log4jLogger:readLogStatus
[DEBUG,Log4jLogger] LEAVE: com.softwareag.common.instrumentation.logging.Log4jLogger:readLogStatus
[DEBUG,Log4jLogger] ENTER: com.softwareag.common.instrumentation.logging.Log4jLogger:readLogStatus
[DEBUG,Log4jLogger] LEAVE: com.softwareag.common.instrumentation.logging.Log4jLogger:readLogStatus
[DEBUG,Log4jLogger] ENTER: com.softwareag.common.instrumentation.logging.Log4jLogger:readLogStatus
[DEBUG,Log4jLogger] LEAVE: com.softwareag.common.instrumentation.logging.Log4jLogger:readLogStatus
[DEBUG,Log4jLogger] ENTER: com.softwareag.common.instrumentation.logging.Log4jLogger:readLogStatus
[DEBUG,Log4jLogger] LEAVE: com.softwareag.common.instrumentation.logging.Log4jLogger:readLogStatus
[DEBUG,Log4jLogger] ENTER: com.softwareag.common.instrumentation.logging.Log4jLogger:readLogStatus
[DEBUG,Log4jLogger] LEAVE: com.softwareag.common.instrumentation.logging.Log4jLogger:readLogStatus
[DEBUG,Log4jLogger] ENTER: com.softwareag.common.instrumentation.logging.Log4jLogger:readLogStatus
[DEBUG,Log4jLogger] LEAVE: com.softwareag.common.instrumentation.logging.Log4jLogger:readLogStatus
[DEBUG,Log4jLogger] ENTER: com.softwareag.common.instrumentation.logging.Log4jLogger:readLogStatus
[DEBUG,Log4jLogger] LEAVE: com.softwareag.common.instrumentation.logging.Log4jLogger:readLogStatus
[DEBUG,Log4jLogger] ENTER: com.softwareag.common.instrumentation.logging.Log4jLogger:readLogStatus
[DEBUG,Log4jLogger] LEAVE: com.softwareag.common.instrumentation.logging.Log4jLogger:readLogStatus
[ERROR,ManageProductsAction] class java.lang.NullPointerException:null
java.lang.NullPointerException
at $Proxy258.deleteMasterGroup(Unknown Source)
at com.exhibitormanual.web.product.ManageProductsAction.deleteMasterGroup(Unknown Source)
at com.exhibitormanual.web.product.ManageProductsAction.perform(Unknown Source)
at org.apache.struts.action.ActionServlet.processActionPerform(ActionServlet.java:1786)
at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1585)
at org.apache.struts.action.ActionServlet.doGet(ActionServlet.java:491)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:740)
:
:
[DEBUG,ManageProductsAction] saveMasterGroup() - returning:ActionForward[error]