ejbSelect method problem

[Soni Prasad]

I am trying to use ejbSelect method but I am getting NullPointerException can anybody please see the code and exception below and guide me

This is a part of code from my bean class

  
   public abstract Collection ejbSelectByAge(int age)throws FinderException;
 
   public void ejbHomeUpdateAll(int age)throws FinderException{
      Collection all = ejbSelectByAge(age);
      Iterator it = all.iterator();
      int amount = 0;
      while(it.hasNext()){
         amount = ((Integer)it.next()).intValue()+20;
         setAmount(new Integer(amount));
      }
   }
 

and ejb-ql in ejb-jar.xml is
SELECT OBJECT(o) FROM Customer AS o

and this the part of exception

 
EJBException in method: public abstract void customer.CustomerHomeRemote.UpdateAll(int) throws javax.ejb.FinderException,java.rmi.RemoteException, causedBy:
org.jboss.util.NestedRuntimeException: - nested throwable: (java.lang.NullPointerException)
        at org.jboss.ejb.plugins.local.BaseLocalProxyFactory.getEntityEJBLocalObject(BaseLocalProxyFactory.java:272)
        at org.jboss.ejb.plugins.local.BaseLocalProxyFactory.getEntityLocalCollection(BaseLocalProxyFactory.java:285)
        at org.jboss.ejb.plugins.cmp.jdbc.JDBCAbstractQueryCommand.execute(JDBCAbstractQueryCommand.java:311)
        at org.jboss.ejb.plugins.cmp.jdbc.JDBCAbstractQueryCommand.execute(JDBCAbstractQueryCommand.java:116)
        at org.jboss.ejb.plugins.cmp.jdbc.bridge.JDBCSelectorBridge.execute(JDBCSelectorBridge.java:96)
        at org.jboss.ejb.plugins.cmp.jdbc.bridge.JDBCSelectorBridge.invoke(JDBCSelectorBridge.java:70)
        at org.jboss.ejb.plugins.cmp.bridge.EntityBridgeInvocationHandler.invoke(EntityBridgeInvocationHandler.java:91)
        at org.jboss.proxy.compiler.Runtime.invoke(Runtime.java:59)
        at customer.CustomerBean$Proxy.ejbSelectByAge(<generated>  :wink:  
        at customer.CustomerBean.ejbHomeUpdateAll(CustomerBean.java:60)
 

I am using jboss4.0.0. What could be the reason?
Please help me out...
[ July 21, 2005: Message edited by: Soni Prasad ]

[jo ma]

I think the age parameter is missing in your ejb-ql like "SELECT OBJECT(c) FROM Customer AS c WHERE c.age = ?1". Better exception naming from JBoss might still be helpful .