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/*****************************************************************************
* Copyright (c) 2012 CEA LIST.
*
*
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* CEA LIST - Initial API and implementation
*
*****************************************************************************/
package org.eclipse.papyrus.moka.fuml.Semantics.Activities.IntermediateActivities;
import java.util.ArrayList;
import java.util.List;
import org.eclipse.papyrus.moka.fuml.FUMLExecutionEngine;
import org.eclipse.uml2.uml.ActivityEdge;
public class ActivityEdgeInstance {
/*
* The activity edge of which this is an instance. [This is optional to
* allow for an implicit fork node execution to be connected to its action
* execution by an edge instance which does not have a corresponding node in
* the model.]
*/
public ActivityEdge edge;
/*
* The activity group that contains this activity edge instance.
*/
public ActivityNodeActivationGroup group;
/*
* The source of this activity edge instance. The node of the source must be
* the same as the source of the edge of this edge instance.
*/
public ActivityNodeActivation source;
/*
* The target of this activity edge instance. The node of the target must be
* the same as the target of the edge of this edge instance.
*/
public ActivityNodeActivation target;
public List<Offer> offers = new ArrayList<Offer>();
public void sendOffer(List<Token> tokens) {
// Send an offer from the source to the target.
// Keep the offered tokens until taken by the target.
// (Note that any one edge should only be handling either all object
// tokens or all control tokens.)
Offer offer = new Offer();
for(int i = 0; i < tokens.size(); i++) {
Token token = tokens.get(i);
// Debug.println("[sendOffer] token value = " + token.get());
offer.offeredTokens.add(token);
}
this.offers.add(offer);
if (! FUMLExecutionEngine.eInstance.getControlDelegate().control(this)) { // Added for connection with the debug API
return ;
}
this.target.receiveOffer();
}
public Integer countOfferedValues() {
// Return the number of values being offered in object tokens.
int count = 0;
List<Offer> offers = this.offers;
for(int i = 0; i < offers.size(); i++) {
count = count + offers.get(i).countOfferedValues();
}
return count;
}
public List<Token> takeOfferedTokens() {
// Take all the offered tokens and return them.
List<Token> tokens = new ArrayList<Token>();
while(this.offers.size() > 0) {
List<Token> offeredTokens = this.offers.get(0).getOfferedTokens();
for(int i = 0; i < offeredTokens.size(); i++) {
tokens.add(offeredTokens.get(i));
}
this.offers.remove(0);
}
return tokens;
}
public List<Token> takeOfferedTokens(Integer maxCount) {
// Take all the offered tokens, up to the given maximum count of
// non-null object tokens, and return them.
List<Token> tokens = new ArrayList<Token>();
int remainingCount = maxCount;
while(this.offers.size() > 0 & remainingCount > 0) {
Offer offer = this.offers.get(0);
List<Token> offeredTokens = offer.getOfferedTokens();
int count = offer.countOfferedValues();
if(count <= remainingCount) {
for(int i = 0; i < offeredTokens.size(); i++) {
tokens.add(offeredTokens.get(i));
}
remainingCount = remainingCount - count;
this.offers.remove(0);
} else {
for(int i = 0; i < remainingCount; i++) {
Token token = offeredTokens.get(i);
if(token.getValue() != null) {
tokens.add(token);
}
}
offer.removeOfferedValues(remainingCount);
remainingCount = 0;
}
}
return tokens;
}
public List<Token> getOfferedTokens() {
// Get the offered tokens (after which the tokens will still be
// offered).
List<Token> tokens = new ArrayList<Token>();
List<Offer> offers = this.offers;
for(int i = 0; i < offers.size(); i++) {
List<Token> offeredTokens = offers.get(i).getOfferedTokens();
for(int j = 0; j < offeredTokens.size(); j++) {
tokens.add(offeredTokens.get(j));
}
}
return tokens;
}
public Boolean hasOffer() {
// Return true if there are any pending offers.
boolean hasTokens = false;
int i = 1;
while(!hasTokens & i <= this.offers.size()) {
hasTokens = this.offers.get(i - 1).hasTokens();
i = i + 1;
}
return hasTokens;
}
}
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