0 Replies Latest reply on Feb 5, 2005 3:39 AM by jignesh patel

    CMP 2.0 with oracle-sequence and composite primary key

    jignesh patel Newbie

      Hi All,

      I want to use the CMP 2.0 that would work with the oracle database sequence...
      I m using Jboss 4.0.1 as my application server.

      I have successfully used the Oracle sequence with my CMP 2.0, ....but it works only when the primary key is a single field primary key and not a composite key for which PrimaryKeyClass would have to be used.
      Example when the primary key is a single field::

      in ejb-jar.xml::==>


      in the jbosscmp-jdbc.xml file ::==>

      <entity-command name="oracle-sequence">

      Here <field-name>no</field-name> is my field on which oracle-sequence is applied....and so that I dont have to pass
      that field while calling create method of the bean (CMP 2.0)...

      The problem I face is that in one of the tables, the primary key is a composite key, constituting of 4 fields. On one of the fields out of these, the oracle-sequence is to be applied. But the above described method does not work in the case of composite primary key. Could some one please help me out in this ?

      the ejb-jar.xml file has the following entry for the primary key class::==>

      in the jbosscmp-jdbc.xml file the entry for the field on which sequence is applied, is::==>
      <entity-command name="oracle-sequence">

      But with above configuration, at deployment time, I get following exception ................. ==>

      org.jboss.deployment.DeploymentException: Generation only supported with single PK field
      at org.jboss.ejb.plugins.cmp.jdbc.JDBCAbstractCreateCommand.getGenerated
      at org.jboss.ejb.plugins.cmp.jdbc.JDBCIdentityColumnCreateCommand.initGe
      at org.jboss.ejb.plugins.cmp.jdbc.JDBCAbstractCreateCommand.init(JDBCAbs
      at org.jboss.ejb.plugins.cmp.jdbc.keygen.JDBCOracleCreateCommand.init(JD
      at org.jboss.ejb.plugins.cmp.jdbc.JDBCCommandFactory.createCreateEntityC
      at org.jboss.ejb.plugins.cmp.jdbc.JDBCStoreManager.startStoreManager(JDB
      at org.jboss.ejb.plugins.cmp.jdbc.JDBCStoreManager.start(JDBCStoreManage

      Please guide me in using Oracle-sequence with CMP 2.0 EntityBean when the primary key is composite key and the application server used is JBoss 4.0.1.

      Thanks in advance,