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NamedElement (from Kernel , Dependencies ) on page 99.
InteractionFragment is an abstract notion of the most general interaction unit. An interaction fragment is a piece of an interaction.
Each interaction fragment is conceptually like an interaction by itself.
InteractionFragment is an abstract class and a specialization of NamedElement .
Associations
• enclosingOperand: InteractionOperand [0..1] The operand enclosing this InteractionFragment (they may nest recursively).
• covered : Lifeline [*] References the Lifeline s that the InteractionFragment involves.
• generalOrdering:GeneralOrdering [*] The general ordering relationships contained in this fragment.
• enclosingInteraction: Interaction[0..1] The Interaction enclosing this InteractionFragment .
Semantics
The semantics of an InteractionFragment is a pair of set of traces. See Interaction (from BasicInteraction, Fragments )
for explanation of how to calculate the traces.
Notation
There is no general notation for an InteractionFragment . The specific subclasses of InteractionFragment will define their
own notation.
Changes from previous UML
This concept did not appear in UML 1.x.