PrecedenceConstraint : public class
Created: 2006-02-28 12:47:16
Modified: 2011-02-04 07:56:30
Project:
Advanced:
<p>The PrecedenceConstraint represents a particular constraint applied on the execution sequence of functions.<br/></p><p><br/></p><p>Semantics:<br/></p><p>The semantics for the PrecedenceConstraint metaclass is to define an association relationship between Functions, indicating the association relationship such that all predecessors have completed before the successors are started.<br/></p><p><br/></p><p>Note: Without a precedence relation, Functions are executed according to their data dependencies, if these are uni-directional. For bi-directional data dependencies, execution order is not defined unless the PrecedenceDependency relationship is used.<br/></p><p><br/></p><p>Notation:<br/></p><p>PrecedenceConstraint is shown as a dashed arrow with "Precedes" next to it. It points from preceeding to the successive entity.<br/></p><p><br/></p><p>Extension: <br/></p><p>The PrecedenceConstraint extends UML2 metaclass Class and Dependency.<br/></p>
Element Source Role Target Role Details
«instanceRef» PrecedenceConstraint_successive
Class  
Name: successive
 
Name:  
 
 
«instanceRef» PrecedenceConstraint_preceding
Class  
Name: preceding
 
Name: