/**
* Add a join
*
* @param descriptor The join descriptor to add
* @throws IllegalArgumentException if the descriptor's ID already exists in the workflow
*/
public void addJoin(JoinDescriptor descriptor) {
if (getJoin(descriptor.getId()) != null) {
throw new IllegalArgumentException("Join with id " + descriptor.getId() + " already exists");
}
joins.add(descriptor);
}
public JoinDescriptor getJoin(int id) {
for (Iterator iterator = joins.iterator(); iterator.hasNext(); ) {
JoinDescriptor joinDescriptor = (JoinDescriptor) iterator.next();
if (joinDescriptor.getId() == id) {
return joinDescriptor;
}
}
return null;
}