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This open source software is a reference implementation, consisting of software and related files, for the OMG specification called the Semantics of a Foundational Subset for Executable UML Models (fUML). The reference implementation is intended to implement the execution semantics of UML activity models, accepting an XMI file from a conformant UML model as its input and providing an execution trace of the selected activity model(s) as its output. The core execution engine, which is directly generated from the normative syntactic and semantic models for fUML, may also be used as a library implementation of fUML in other software.

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/*
 * Initial version copyright 2008 Lockheed Martin Corporation, except  
 * as stated in the file entitled Licensing-Information. 
 * 
 * All modifications copyright 2009-2012 Data Access Technologies, Inc.
 *
 * Licensed under the Academic Free License version 3.0 
 * (http://www.opensource.org/licenses/afl-3.0.php), except as stated 
 * in the file entitled Licensing-Information. 
 */

package fUML.Semantics.Actions.IntermediateActions;

import fUML.Debug;
import UMLPrimitiveTypes.*;

import fUML.Syntax.*;
import fUML.Syntax.Classes.Kernel.*;
import fUML.Syntax.CommonBehaviors.BasicBehaviors.*;
import fUML.Syntax.CommonBehaviors.Communications.*;
import fUML.Syntax.Activities.IntermediateActivities.*;
import fUML.Syntax.Actions.BasicActions.*;
import fUML.Syntax.Actions.IntermediateActions.*;

import fUML.Semantics.*;
import fUML.Semantics.Classes.Kernel.*;
import fUML.Semantics.CommonBehaviors.BasicBehaviors.*;
import fUML.Semantics.Activities.IntermediateActivities.*;
import fUML.Semantics.Actions.BasicActions.*;
import fUML.Semantics.Loci.*;

public abstract class StructuralFeatureActionActivation extends
		fUML.Semantics.Actions.BasicActions.ActionActivation {

	public fUML.Syntax.Classes.Kernel.Association getAssociation(
			fUML.Syntax.Classes.Kernel.StructuralFeature feature) {
		// If the structural feature for the action of this activation is an
		// association end,
		// then get the associated association.

		Association association = null;
		if (feature instanceof Property) {
			association = ((Property) feature).association;
		}

		return association;
	} // getAssociation

	public fUML.Semantics.Classes.Kernel.LinkList getMatchingLinks(
			fUML.Syntax.Classes.Kernel.Association association,
			fUML.Syntax.Classes.Kernel.StructuralFeature end,
			fUML.Semantics.Classes.Kernel.Value oppositeValue) {
		// Get the links of the given binary association whose end opposite
		// to the given end has the given value
		
		return this.getMatchingLinksForEndValue(association, end, oppositeValue, null);
	}

	
	public fUML.Semantics.Classes.Kernel.LinkList getMatchingLinksForEndValue(
			fUML.Syntax.Classes.Kernel.Association association,
			fUML.Syntax.Classes.Kernel.StructuralFeature end,
			fUML.Semantics.Classes.Kernel.Value oppositeValue,
			fUML.Semantics.Classes.Kernel.Value endValue) {
		// Get the links of the given binary association whose end opposite
		// to the given end has the given opposite value and, optionally, that
		// has a given end value for the given end.

		Property oppositeEnd = this.getOppositeEnd(association, end);

		ExtensionalValueList extent = this.getExecutionLocus().getExtent(
				association);

		LinkList links = new LinkList();
		for (int i = 0; i < extent.size(); i++) {
			ExtensionalValue link = extent.getValue(i);
			if (link.getFeatureValue(oppositeEnd).values.getValue(0).equals(oppositeValue)) {
				boolean matches = true;
				if (endValue != null) {
					matches = link.getFeatureValue(end).values.getValue(0).equals(endValue);
				}
				if (matches) {
					if (!end.multiplicityElement.isOrdered | links.size() == 0) {
						links.addValue((Link) link);
					} else {
						int n = link.getFeatureValue(end).position;
						boolean continueSearching = true;
						int j = 0;
						while (continueSearching & j < links.size()) {
							j = j + 1;
							continueSearching = links.getValue(j - 1).getFeatureValue(end).position < n;
						}
						if (continueSearching) {
							links.addValue((Link) link);
						} else {
							links.addValue(j - 1, (Link) link);
						}
					}
				}
			}
		}

		return links;
	} // getMatchingLinks

	public fUML.Syntax.Classes.Kernel.Property getOppositeEnd(
			fUML.Syntax.Classes.Kernel.Association association,
			fUML.Syntax.Classes.Kernel.StructuralFeature end) {
		// Get the end of a binary association opposite to the given end.

		Property oppositeEnd = association.memberEnd.getValue(0);
		if (oppositeEnd == end) {
			oppositeEnd = association.memberEnd.getValue(1);
		}

		return oppositeEnd;
	} // getOppositeEnd

} // StructuralFeatureActionActivation