A.5 Framework pattern tags

When a pattern is presented, it is given a pattern name. The structure section of the GoF pattern catalog provides a class diagram that shows the pattern's participating classes, interfaces, methods, associations, and attributes. The class, interface, method, association, and attribute names given in such a diagram, together with the pattern name, form a set of UML-F tags for the pattern. This is true regardless of whether we are discussing a pattern out of a pattern catalog or an application-specific pattern. The UML-F tags for a pattern take the form shown in the following table.

See Chapter 4 for further information.

Tag form	Summary
PatternName ClassName	The annotated class plays the role of the class given the name ClassName in the pattern named PatternName.
PatternName InterfaceName	The annotated interface plays the role of the interface given the name InterfaceName in the pattern named PatternName.
PatternName methodName	The annotated method plays the role of the method given the name methodName in the pattern named PatternName.
PatternName associationLabel	The annotated association plays the role of the association given the label associationLabel in the pattern named PatternName.
PatternName attributeName	The annotated attribute plays the role of the attribute given the name attributeName in the pattern named PatternName.

Note that class and interface names start with an uppercase letter, while method names, association labels, and attribute names start with a lowercase letter. Also note that interface names are presented in italics. Abstract classes and abstract methods would also be presented in italics.

Appendix B presents the tags for the framework-related design patterns of the pattern catalog (Gamma et. al., 1995).