[JBoss-user] [Persistence & CMP/JBoss] - Re: MySQL 4/JBoss 3.2.3 and CMP 2.0

[rberehoudougou <nu...@jb...>]

Hi,
Here is my primary key class :

public class ProductPK implements java.io.Serializable {



        /*

         * Note that the primary key fields must be a

         * subset of the the container-managed Bean fields.

         * The fields we are marking as container-managed in

         * our Bean are productID, name, desc, and basePrice.

         * Therefore our PK fields need to be from that set.

        */

        public String productID;



        public ProductPK(String productID) {

                this.productID = productID;

        }



        public ProductPK() {

        }



        public String toString() {

                return productID.toString();

        }



        public int hashCode()

        {

              return productID.hashCode();

        }



        public boolean equals(Object prod)

        {

              return ((ProductPK)prod).productID.equals(productID);

        }

}

As you can see , it is a valid compound PK class.

For the querry, the only querry I could think of that would match the one in the exception is the following from the ejb-jar.xml file :
      
        <query-method>
          <method-name>findAllProducts</method-name>
          <method-params />
        </query-method>
        <ejb-ql>SELECT OBJECT (a) FROM ProductBean AS a WHERE a.productId IS NOT NULL</ejb-ql>
      

The select clause does select Object (a)

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