Developing a DSL Graphical Notation - Eclipse Modeling Project: A Domain-Specific Language Toolkit - page 73

Table 4-3 Mindmap Subtopic Link Mapping

Element Property Value

Mapping

Link Mapping Target Feature Topic.subtopics : Topic

Diagram Link Connection TopicSubtopics

Tool Creation Tool TopicSubtopics

The Relationship Link Mapping is more involved than our
TopicSubtopics Link Mapping because we are mapping a domain class to the
link, not just a reference within a class, as seen in Table 4-4. In this case, the
Relationship class in our domain model is the domain Element , with the
element 's Containment Feature of our Map being where we will store new
Relationship instances created with each link. Using a class to represent a
relationship in our domain model essentially gives us what an EAssociation in
Ecore itself would provide. The Source and Target Feature properties map
in a straightforward manner to our source : Topic and target : Topic
references, respectively. As with the TopicSubtopic link mapping, we map our
Diagram Link and Tool properties to their corresponding graphical and tool-
ing model elements. Again, Appearance Style and Context Menu go unused;
Section 4.5, “Developing the Scenario Diagram,” discusses the Related
Diagrams property.

Table 4-4 Mindmap Relationship Link Mapping

Element Property Value

Mapping

Link Mapping Containment Feature Map.elements : MapElement

Element Relationship -> MapElement

Source Feature Relationship.source : Topic

Target Feature Relationship.target : Topic

Diagram Link Connection Relationship

Tool Creation Tool Relationship

Feature Label Mapping Diagram Label Diagram Label RelationshipName

Features MapElement.name : EString

(continues)