The content of this file describes specific choices of implementation/limitation.

#Property The Property associated to an Association are not displayed in the Diagram, even when this diagram is synchronized. The Drop of such Properties is not allowed too.

#Abstraction The Abstraction is owned by the nearest parent Package of the source. The semantic candidate expression must return all Abstraction existing in the Package and in its children.

#Association The Association is owned by the nearest Package of the source. The semantic candidate expression must return all Association existing in the Package and in its children. The Association references two members ends. The first memberEnd is the Property typed with the target. The second memberEnd is the Property typed with the source.

The palette proposes 4 kins of Association to create.

##Directed Association

• an Association created from class A (source) to class B (target):
  • the class A owns a Property b typed with B with a multiplicity [0..1], aggregation is set to none,
  • the association owns a Property a, typed with A, with a multiplicity set to 1, aggregation is set to none,
  • the first memberEnd (index 0) is the Property typed with B, the second memberEnd (index 1) is the Property typed with A.

##Composite Association

• an Association created from class A (source) to class B (target):
  • the class A owns a Property b typed with B with a multiplicity [0..1], aggregation is set to composite,
  • the association owns a Property a, typed with A, with a multiplicity set to 1, aggregation is set to none,
  • the first memberEnd (index 0) is the Property typed with B, the second memberEnd (index 1) is the Property typed with A.

##Share Association

• an Association created from class A (source) to class B (target):
  • the class A owns a Property b typed with B with a multiplicity [0..1], aggregation is set to share,
  • the association owns a Property a, typed with A, with a multiplicity set to 1, aggregation is set to none,
  • the first memberEnd (index 0) is the Property typed with B, the second memberEnd (index 1) is the Property typed with A.

##Association

• an Association created from class A (source) to class B (target):
  • the classes A and B don't own properties
  • the association owns two Properties, a:A [0..1] and b:B [1]. The aggregation field is set to none for these 2 properties,
  • the first memberEnd (index 0) is the Property typed with B, the second memberEnd (index 1) is the Property typed with A.

#AssociationClass The AssociationClass is owned by the nearest parent Package of the source. The AssociationClass owns the two end members. The first memberEnd is the Property typed with the target. The second memberEnd is the Property typed with the source. Basically, as it is done for Association, the first memberEnd is the source and the second memberEnd is the target.

#Constraint technical requirement: The ContextLink changes the owner of the Constraint, so creating a ContextLink can results in the constraint disappearing. To avoid this behavior, the semantic candidate expression must return all Constraints found in the Package (diagram background) and in its children.

#ContainmentLink technical requirement: The target view of the ContainmentLink must be located on the diagram background to ease the development of the diagram.

#Dependency The Dependency is owned by the nearest parent Package of the source. The semantic candidate expression must return all Dependency existing in the Package and in its children.

#ElementImport The ElementImport is owned by the source element.

#Generalization The Generalization is owned by the source element.

##GeneralizationSet The GeneralizationSet is owned by the nearest parent Package of the source Generalization.

##InformationFlow The InformationFlow is owned by the nearest parent Package of the source.

##InstanceSpecification Link The InstanceSpecification is owned by the nearest parent Package of the source InstanceSpecification. (unlike in GMF Diagram). In GMF Diagram they are always inside the Package at the root of the UML model.

##InterfaceRealization The InterfaceRealization is owned by the source of the link which is a BehavioredClassifier.

##Link (Constaint#constrainedElements and Comment#annotatedElement) technical requirement: We forbid to change the semantic of a link by changing its source from a Comment to a Constraint (and vice-versa).

##PackageImport The PackageImport is owned by the source of the link which is a Package.

##PackageMerge The PackageMerge is owned by the source of the link which is a Package.

#Realization The Realization is owned by the nearest parent Package of the source.

#Substitution The Substitution is owned by the source of the link. The source and target must be Classifier.

#TemplateBinding The TemplateBinding is owned by the source of the link. The source must be a TemplateableElement and the target a TemplateableSignature. Technically, we create a TemplateBinding between a TemplateableElement and an element owning a TemplateableSignature.

#Usage The Usage is owned by the nearest parent Package of the source.