On Sun, 2003-07-06 at 20:55, Brian Topping wrote:

> java.lang.IllegalArgumentException: Attempt to get lock ref with a null
> object
>      at org.jboss.ejb.BeanLockManager.getLock (BeanLockManager.java:80)
>      at
> org.jboss.ejb.plugins.EntityLockInterceptor.invoke(EntityLockInterceptor.java
> :81)
>      at

This normally happens when your primary key isn't mapped correctly.
The container creates the local interface implementation (a smart proxy)
and embeds the primary key in it. In this case it is null. When you
try to use the proxy it fails with this error.

--
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Adrian Brock
Director of Support
Back Office
JBoss Group, LLC
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