This interface is implemented by a class that represents a relation.
The class
RelationTypeSupport is available to help
implement this interface.
A relation type has a name and a list of role info objects for the
relation.
A relation type has to registered in the relation service. This is done
either by using createRelationType() to get a RelationTypeSupport
object kepy in the relation service, or by using addRelationType()
to add an external relation type to the relation service.
author: Adrian Brock. version: $Revision: 57200 $ |