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Chapter 3. Domain-Specific Modelling
NamedElement
name : String
Type
EnumerationLiteral
ownedLiteral
0...*
DataType
enumeration
0...1
PrimitiveType
Enumeration
Figure 3.7.: EMOF data types
EnumerationLiteral is a class for all enumeration literals.
possessing enumeration (enumeration).
It holds an aggregation to its
Enumeration is a class for enumeration types while the literals are described by a set of
enumeration literals (ownedLiteral).
To describe complex DSLs with EMOF, it is also necessary to model classes. This is shown
in Figure 3.8. The new elements are described below:
MultiplicityElement is the abstract base type for all elements that can be multiplicities.
Property is a class for all properties / attributes of a class. It has a self association for a
possible opposite type (opposite) and an aggregation [64] to its possessing class (class).
Operation describes a certain operation / method of a class. It holds an aggregation to its
possessing class (class) and to a possible set of parameters (ownedParameter). It also
has an association with types (raisedException), which specifies the possible kinds of
thrown / raised exceptions.
Parameter is a class for all parameters of an operation. It has an aggregation to its possessing
operation (operation).
Class describes a general class type. It holds a set of attributes (ownedAttribute) and a set
of operations (ownedOperation).
Since the UML infrastructure should be aligned to the MOF specification [64, p. 8], Figure 3.9
shows the related DSM instances introduced in Section 3.1 for the UML specification.
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