fUML.Semantics.Actions.IntermediateActions.CreateLinkActionActivation Maven / Gradle / Ivy

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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 class CreateLinkActionActivation extends
		fUML.Semantics.Actions.IntermediateActions.WriteLinkActionActivation {

	public void doAction() {
		// If the association has any unique ends, then destroy an existing link
		// that matches all ends of the link being created.
		// Get the extent at the current execution locus of the association for
		// which a link is being created.
		// Destroy all links that have a value for any end for which
		// isReplaceAll is true.
		// Create a new link for the association, at the current locus, with the
		// given end data values,
		// inserted at the given insertAt position (for ordered ends).

		CreateLinkAction action = (CreateLinkAction) (this.node);
		LinkEndCreationDataList endDataList = action.endData;

		Association linkAssociation = this.getAssociation();
		ExtensionalValueList extent = this.getExecutionLocus().getExtent(
				linkAssociation);

		boolean unique = false;
		for (int i = 0; i < endDataList.size(); i++) {
			if (endDataList.getValue(i).end.multiplicityElement.isUnique) {
				unique = true;
			}
		}

		for (int i = 0; i < extent.size(); i++) {
			ExtensionalValue value = extent.getValue(i);
			Link link = (Link) value;

			boolean match = true;
			boolean destroy = false;
			int j = 1;
			while (j <= endDataList.size()) {
				LinkEndCreationData endData = endDataList.getValue(j - 1);
				if (this.endMatchesEndData(link, endData)) {
					if (endData.isReplaceAll) {
						destroy = true;
					}
				} else {
					match = false;
				}
				j = j + 1;
			}
			if (destroy | unique & match) {
				link.destroy();
			}
		}

		Link newLink = new Link();
		newLink.type = linkAssociation;

		for (int i = 0; i < endDataList.size(); i++) {
			LinkEndCreationData endData = endDataList.getValue(i);

			int insertAt = 0;
			if (endData.insertAt != null) {
				insertAt = ((UnlimitedNaturalValue) (this
						.takeTokens(endData.insertAt).getValue(0))).value.naturalValue;
			}

			newLink.setFeatureValue(endData.end,
					this.takeTokens(endData.value), insertAt);
		}

		newLink.addTo(this.getExecutionLocus());
	} // doAction

} // CreateLinkActionActivation