INFO QueryLogger: Created connection pool:
jdbc:derby://localhost:1527/empDB;create=false
Driver class: org.apache.derby.jdbc.ClientDriver
Min. connections in the pool: 1
Max. connections in the pool: 1
INFO QueryLogger: Opening connection:
jdbc:derby://localhost:1527/empDB;create=false
Login: fsau
Password: *******
INFO QueryLogger: +++ Connecting: SUCCESS.
INFO QueryLogger: Detected and installed adapter:
org.apache.cayenne.dba.derby.DerbyAdapter
Exception in thread "main" java.lang.NullPointerException
at
org.apache.cayenne.CayenneDataObject.validateForSave(CayenneDataObject.java:551)
at
org.apache.cayenne.CayenneDataObject.validateForInsert(CayenneDataObject.java:658)
at
org.apache.cayenne.access.ObjectStoreGraphDiff.validateAndCheckNoop(ObjectStoreGraphDiff.java:100)
at
org.apache.cayenne.access.DataContext.flushToParent(DataContext.java:1217)
at
org.apache.cayenne.access.DataContext.commitChanges(DataContext.java:1138)
at
com.empApp.dao.impl.CayenneDAOImpl.commitChanges(CayenneDAOImpl.java:32)
CayenneDAOImpl is as follows:
public abstract class CayenneDAOImpl {
private DataContext dc = null;
/**
* Returns thread-bound DataContext.
*/
protected synchronized DataContext getDataContext() {
try {
if(dc == null){
dc = DataContext.getThreadDataContext();
}
} catch(IllegalStateException ISE){
dc = DataContext.createDataContext();
DataContext.bindThreadDataContext(dc);
}
return dc;
}
synchronized protected void commitChanges(){
getDataContext().commitChanges();
}
}
On Tue, Jul 28, 2009 at 9:33 AM, Matt Kerr <mat..entralparksoftware.com>wrote:
> any chance you have a stack trace ?
> or code snippet ?
> project even ?
>
> very hard to offer suggestion / debug
> without more info :-?
>
> ok -thanks
> -matt
>
>
> On Mon, Jul 27, 2009 at 11:59 PM, sridhar
> devatha<devatha.sridha..mail.com> wrote:
> > Hi,
> >
> > I am getting null pointer exception while committing new object. I
> committed
> > several other objects of different classes using cayenne's
> > datacontext.commitchanges. But, i am unable to commit this object.
> >
> > --
> >
> > Yours Sincerely,
> > Sridhar
> >
>
--Yours Sincerely, Devatha Sridhar
This archive was generated by hypermail 2.0.0 : Tue Jul 28 2009 - 12:11:07 EDT