Structural Primitives

Structural primitives create or delete metamodel elements.

Copy Feature

In the metamodel, a feature is copied, giving it a new name. In the model, the values are copied, accordingly.

Parameters:

• feature: The feature to be copied
• name: The name of the copy

Create Attribute

In the metamodel, a new attribute is created. Nothing is changed in the model.

Parameters:

• eClass: The class in which the attribute is created
• name: The name of the new attribute
• type: The type of the new attribute
• lowerBound: The lower bound of the new attribute
• upperBound: The upper bound of the new reference
• defaultValue: The default value literal

Create Class

In the metamodel, a new class is created. Nothing is changed in the model.

Parameters:

• ePackage: The package in which the class is created
• name: The name of the new class
• superClasses: The super classes of the new class
• abstr: Whether the class is abstract

Create Enumeration

In the metamodel, an enumeration is created. In the model, nothing needs to be changed.

Parameters:

• ePackage: The package in which the enumeration is created
• name: The name of the new enumeration
• literals: The names of the literals of the new enumeration

Create GMF Constraint

In the metamodel, a new constraint is introduced. Nothing is changed in the model.

Parameters:

• element: The metamodel element to be annotated
• ocl: The OCL expression of the constraint
• description: The description of the constraint

Constraints:

• The element must not be an annotation.

Create Opposite Reference

In the metamodel, an opposite is created for a reference. In the model, the opposite direction needs to be set.

Parameters:

• reference: The reference for which the opposite is created
• name: The name of the opposite reference
• lowerBound: The lower bound of the opposite reference
• upperBound: The upper bound of the opposite reference
• changeable: Whether the opposite reference is changeable

Constraints:

• In case of a cross reference, the upper bound of the opposite reference must be -1.
• The reference must not already have an opposite
• In case of a containment reference, the upper bound of the opposite reference must be 1.

Create Reference

In the metamodel, a new reference is created. Nothing is changed in the model.

Parameters:

• eClass: The class in which the reference is created
• name: The name of the new reference
• type: The type of the new reference
• lowerBound: The lower bound of the new reference
• upperBound: The upper bound of the new reference
• containment: Whether the new reference is a containment reference
• opposite: The opposite reference of the new reference

Delete Class

In the metamodel, a class that is no longer used is deleted. In the model, nothing is changed.

Parameters:

• eClass: The class to be deleted

Constraints:

• The class must not be the target of a reference
• The class must not have sub classes
• The class must not have super classes

Delete Feature

In the metamodel, a feature is deleted. In the model, its values are deleted, too.

Parameters:

• feature: The feature to be deleted

Delete Opposite Reference

In the metamodel, the opposite of a reference is deleted. In the model, its values are deleted, too.

Parameters:

• reference: The reference whose opposite should be deleted

Constraints:

• The reference needs to define an opposite

Delete Package

In the metamodel, an empty package is deleted.

Parameters:

• ePackage: The package to be deleted

Constraints:

• The package must not contain classifiers
• The package must not contain subpackages