/**
* Gets all the not mandatory relationship roles. That is, the roles where the target is one, and
* all the corresponding foreign key columns are nullable.
*
* @todo perhaps we need to iterate over all columnmaps?
* @return The MandatoryRelationshipRoles value
*/
public Collection getNotMandatoryRelationshipRoles() {
CompositePredicate notMandatory = new Not();
notMandatory.add(middlegen.predicates.relation.Mandatory.getInstance());
return getRelationshipRoles(notMandatory);
}
/**
* Gets all the mandatory relationship roles. That is, the roles where the target is one, and at
* least one of the corresponding foreign key columns are not nullable.
*
* @todo What if a mandatory relationship role has been disabled? Perhaps it shouldn't be possible
* to disable such mandatory roles in the GUI? -And warn the user if she tries to?
* @todo perhaps we need to iterate over all columnmaps?
* @return The MandatoryRelationshipRoles value
*/
public Collection getMandatoryRelationshipRoles() {
return getRelationshipRoles(middlegen.predicates.relation.Mandatory.getInstance());
}