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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 2009-2017 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.Activities.IntermediateActivities;

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

public class ForkNodeActivation extends
		fUML.Semantics.Activities.IntermediateActivities.ControlNodeActivation {

	public void fire(
			fUML.Semantics.Activities.IntermediateActivities.TokenList incomingTokens) {
		// Create forked tokens for all incoming tokens and offer them on all
		// outgoing edges.

		Debug.println(this.node == null? "[fire] Anonymous fork node.": 
				"[fire] Fork node " + this.node.name + "...");

		ActivityEdgeInstanceList outgoingEdges = this.outgoingEdges;
		int outgoingEdgeCount = outgoingEdges.size();

		TokenList forkedTokens = new TokenList();
		for (int i = 0; i < incomingTokens.size(); i++) {
			Token token = incomingTokens.getValue(i);
			ForkedToken forkedToken = new ForkedToken();
			forkedToken.baseToken = token;
			forkedToken.remainingOffersCount = outgoingEdgeCount;
			forkedToken.baseTokenIsWithdrawn = false;
			forkedTokens.addValue(forkedToken);
		}

		this.addTokens(forkedTokens);

		this.sendOffers(forkedTokens);
	} // fire

	public void terminate() {
		// Remove any offered tokens and terminate.

		this.clearTokens();
		super.terminate();
	} // terminate

} // ForkNodeActivation