Compound PK problem

Question

Hi guys,
I have compound key from 3 fields. But each of them are FK-s as well.
It works fine exept create.
How to cope with it?
Has JBoss any restrictions?
Or what am I doing wrong?
So, here is ma PK:
public class SasAssignmentPK implements Serializable {
     public Integer sampTableId;
     public Integer productGroupId;
     public Integer sasId;
     public SasAssignmentPK(Integer sampTableId, Integer productGroupId, Integer sasId) {
          this.sampTableId = sampTableId;
          this.productGroupId = productGroupId;
          this.sasId = sasId;
     public boolean equals(Object obj) {
          if (this == obj) {
               return true;
          if (!(obj instanceof SasAssignmentPK)) {
               return false;
          SasAssignmentPK that = (SasAssignmentPK) obj;
          if (!(that.sampTableId == null ? this.sampTableId == null : that.sampTableId.equals(this.sampTableId))) {
               return false;
          if (!(that.productGroupId == null
               ? this.productGroupId == null
               : that.productGroupId.equals(this.productGroupId))) {
               return false;
          if (!(that.sasId == null ? this.sasId == null : that.sasId.equals(this.sasId))) {
               return false;
          return true;
     public int hashCode() {
          int result = 0;
          result = result + this.sampTableId.hashCode();
          result = result + this.productGroupId.hashCode();
          result = result + this.sasId.hashCode();
          return result;
Here is my bean class:
public abstract class SasAssignmentBean implements EntityBean {
     /** Logger */
     static public final Logger LOG = Logger.getLogger(SasAssignmentBean.class);
     /** Entity context */
     protected EntityContext entityContext;
     /** @ejb.persistence column-name = "ST_ID"
     * @ejb.interface-method view-type = "both"
     * @return
     abstract public Integer getSampTableId();
     /** @ejb.interface-method view-type = "both" */
     abstract public void setSampTableId(Integer sampTableId);
     /** @ejb.persistence column-name = "PG_ID"
     * @ejb.interface-method view-type = "both"
     * @return
     abstract public Integer getProductGroupId();
     /** @ejb.interface-method view-type = "both" */
     abstract public void setProductGroupId(Integer productGroupId);
     /** @ejb.persistence column-name = "SAS_ID"
     * @ejb.interface-method view-type = "both"
     * @return
     abstract public Integer getSasId();
     /** @ejb.interface-method view-type = "both" */
     abstract public void setSasId(Integer sasId);
     * @ejb.interface-method view-type = "local"
     * @ejb.relation
     * name = "SampTable-SasAssignments"
     * role-name = "SasAssignment-belongs-to-SampleTable"
     * cascade-delete = "yes"
     * @jboss.relation
     * fk-constraint = "true"
     * fk-column = "ST_ID"
     * related-pk-field = "id"
     abstract public SampTableLocal getSampTable();
     abstract public void setSampTable(SampTableLocal sampTable);
     * @ejb.interface-method view-type = "local"
     * @ejb.relation
     * name = "ProductGroup-SasAssignments"
     * role-name = "SasAssignment-belongs-to-ProductGroup"
     * cascade-delete = "yes"
     * @jboss.relation
     * fk-constraint = "true"
     * fk-column = "PG_ID"
     * related-pk-field = "id"
     abstract public ProductGroupLocal getProductGroup();
     abstract public void setProductGroup(ProductGroupLocal sas);
     * @ejb.interface-method view-type = "local"
     * @ejb.relation
     * name = "SampAttributeSet-SasAssignments"
     * role-name = "SasAssignment-belongs-to-SampAttributeSet"
     * cascade-delete = "yes"
     * @jboss.relation
     * fk-constraint = "true"
     * fk-column = "SAS_ID"
     * related-pk-field = "id"
     abstract public SampAttributeSetLocal getSampAttributeSet();
     abstract public void setSampAttributeSet(SampAttributeSetLocal sas);
     /** Removes Assignments for specified SampAttributeSet
     * @ejb.home-method view-type = "local"
     * @param SampAttributeSet
     public void ejbHomeRemoveAssignments4SAS(SampAttributeSetLocal sampAttributeSet) {
          SasAssignmentLocalHome sasAssignmentLocalHome = (SasAssignmentLocalHome)entityContext.getEJBLocalHome();
     /** Creates a empty SasAssignment with SamplingTable, ProductGroup, SampAttributeSet
     * @ejb.create-method view-type = "both"
     * @param sampTable SamplingTable
     * @param productGroup ProductGroup
     * @param sas SampAttributeSet
     * @throws CreateException if creation failes
     * @return null as specified in EJB
     public SasAssignmentPK ejbCreate(SampTableLocal sampTable, ProductGroupLocal productGroup, SampAttributeSetLocal sas) throws CreateException {
          setProductGroupId(productGroup.getId());
          setSasId(sas.getId());
          setSampTableId(sampTable.getId());
          //return new SasAssignmentPK(sampTable.getId(), productGroup.getId(), sas.getId());
          return null;
     public void ejbPostCreate(SampTableLocal sampTable, ProductGroupLocal productGroup, SampAttributeSetLocal sas) throws CreateException {
          setSampTable(sampTable);
          setProductGroup(productGroup);
          setSampAttributeSet(sas);
And here is an exception:
javax.ejb.TransactionRolledbackLocalException: Internal error setting instance field sampTableId; CausedByException is:
de.keywork.moc.sampling.pk.SasAssignmentPK; CausedByException is:
Internal error setting instance field sampTableId; CausedByException is:
de.keywork.moc.sampling.pk.SasAssignmentPK
at org.jboss.ejb.plugins.AbstractTxInterceptor.invokeNext(AbstractTxInterceptor.java:204)
... bla-bla-bla
Any ides after reading this long story? :-)
Thanks in advance

Answer 1

hi,
have you found a solution yet ?? because I'm facing the same problem .....