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Posted to ojb-user@db.apache.org by Lukas Severin <lu...@mindcast.se> on 2003/06/10 13:05:49 UTC

NullPointerException in OjbExtent

I get the following exception running a JDO query in tomcat (if I run it
standalone it works just fine) :

java.lang.NullPointerException
        at org.apache.ojb.jdori.sql.OjbExtent.<init>(Unknown Source)
        at org.apache.ojb.jdori.sql.OjbStoreManager.getExtent(Unknown
Source)
        at com.sun.jdori.common.PersistenceManagerImpl.getExtent(Unknown
Source

        at com.sun.jdori.common.query.QueryImpl.checkCandidates(Unknown
Source)
        at com.sun.jdori.common.query.QueryImpl.execute(Unknown Source)

My query code :
PersistenceManagerFactory factory = new OjbStorePMF();
PersistenceManager pm = factory.getPersistenceManager();
Query q = null;
Collection c = null;
User user = null;
try {
    String filter = "this.id == " +userId;
    q = pm.newQuery(User.class, filter);
    c = (Collection) q.execute();
    user  = (User) c.iterator().next();
etc ...



My OJB.properties and repository files are in WEB-INF/classes.

Thanks for suggestions to solve this !

NullPointerException !

Posted by Lukas Severin <lu...@mindcast.se>.
Any ideas why I get this NullPointerException ?

----- Original Message ----- 
From: "Lukas Severin" <lu...@mindcast.se>
To: "OJB Users List" <oj...@db.apache.org>
Sent: Tuesday, June 10, 2003 1:05 PM
Subject: NullPointerException in OjbExtent


> I get the following exception running a JDO query in tomcat (if I run it
> standalone it works just fine) :
> 
> java.lang.NullPointerException
>         at org.apache.ojb.jdori.sql.OjbExtent.<init>(Unknown Source)
>         at org.apache.ojb.jdori.sql.OjbStoreManager.getExtent(Unknown
> Source)
>         at com.sun.jdori.common.PersistenceManagerImpl.getExtent(Unknown
> Source
> 
>         at com.sun.jdori.common.query.QueryImpl.checkCandidates(Unknown
> Source)
>         at com.sun.jdori.common.query.QueryImpl.execute(Unknown Source)
> 
> My query code :
> PersistenceManagerFactory factory = new OjbStorePMF();
> PersistenceManager pm = factory.getPersistenceManager();
> Query q = null;
> Collection c = null;
> User user = null;
> try {
>     String filter = "this.id == " +userId;
>     q = pm.newQuery(User.class, filter);
>     c = (Collection) q.execute();
>     user  = (User) c.iterator().next();
> etc ...
> 
> 
> 
> My OJB.properties and repository files are in WEB-INF/classes.
> 
> Thanks for suggestions to solve this !
> 
> 
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