In our projects, we found that the many-many mapping using relation table mapping not worked at all.
we can deploy the jar to jboss server, and we can call add method on the collection returned by a getCMR methods, but no INSERT statement executed at all to insert a record into the relation table.
i looked at the source code at org.jboss.ejb.EntityContainer.storeEntity() method:
public void storeEntity(EntityEnterpriseContext ctx) throws Exception
{
if (ctx.getId() != null)
{
if(getPersistenceManager().isModified(ctx)) {
getPersistenceManager().storeEntity(ctx);
}
}
}
which looks that only if a ctx is modified, will the relation stored also, but org.jboss.ejb.plugins.cmp.jdbc.bridge.JDBCCMRFieldBridge.isDirty() method looks like:
public boolean isDirty(EntityEnterpriseContext ctx) {
if(!hasForeignKey()) {
return false;
}
for(Iterator fields = foreignKeyFields.iterator(); fields.hasNext();) {
JDBCCMPFieldBridge field = (JDBCCMPFieldBridge)fields.next();
if(field.isDirty(ctx)) {
return true;
}
}
return false;
}
it looks that it doesn;t work for a relation table mapping.
Is there a bug? or is it just my fault of using the many-many relationship in jboss?
Hope somebody can help us! we need this feature in our project. Very thanks.
