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Problem using findByPrimaryKey with a CMP Bean

Tony Evans
Ranch Hand

Joined: Jun 29, 2002
Posts: 573
I am currently running the Tutorial for building J2EE Applications using JBOSS and ECLIPSE chapter 6
the tutorial shows you how to create a CMP. One of the methods is findByPrimaryKey.

The problem is that when I call the findByPrimaryKey method :

SupplierLocal supplier = this.suppLocalHome.findByPrimaryKey(suppID);

It returns a null pointer value.

According to the tutorial the findByPrimaryKey is set by the container.

Using a search I can find reference to the findByPrimaryKey in two files:


public findByPrimaryKey(java.lang.String pk)
throws javax.ejb.FinderException,java.rmi.RemoteException;


public findByPrimaryKey(java.lang.String pk)
throws javax.ejb.FinderException;

But it has not generated any reference to the findByPrimaryKey method in the deployment descriptors.

What I need to know is how to set the findByPrimaryKey method within the deployment descriptors.
Or how to set it up with xdoclet.

Thanks for any help.


Joined: Jun 22, 2001
Posts: 6
Yup ! I have the same problem. I the same code deployed on WebLogic 7.1 and when I print ctx.getPrimaryKey() in ejbPostCreate method, I could get the Primary Key value. However, JBoss is not setting the context properly. However, the row is getting inserted in database with correct sequence value.

BTW, I am using JBoss 4.0 with MySql 5.0. My table has primary key defined as AUTO_INCREMENT column. In my code, I am establishing a CMR relation with another entity bean and JBoss is creating a new Bean of current type (I am guessing it because I could see setEntityContext invoked again) before establishing the relation. I am
[ September 17, 2004: Message edited by: varanasir ]
It is sorta covered in the JavaRanch Style Guide.
subject: Problem using findByPrimaryKey with a CMP Bean
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