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/***************************************************************************** |
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* Copyright (c) 2009 CEA |
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* |
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* |
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* All rights reserved. This program and the accompanying materials |
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* are made available under the terms of the Eclipse Public License v1.0 |
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* which accompanies this distribution, and is available at |
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* http://www.eclipse.org/legal/epl-v10.html |
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* |
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* Contributors: |
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* Soyatec - Initial API and implementation |
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* |
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*****************************************************************************/ |
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package org.eclipse.papyrus.uml.diagram.sequence.util; |
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|
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import org.eclipse.emf.common.util.EList; |
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import org.eclipse.uml2.uml.Element; |
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import org.eclipse.uml2.uml.ExecutionSpecification; |
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import org.eclipse.uml2.uml.Gate; |
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import org.eclipse.uml2.uml.Lifeline; |
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import org.eclipse.uml2.uml.Message; |
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import org.eclipse.uml2.uml.MessageEnd; |
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import org.eclipse.uml2.uml.MessageSort; |
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import org.eclipse.uml2.uml.NamedElement; |
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import org.eclipse.uml2.uml.OccurrenceSpecification; |
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/** |
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* Helper class for determine the message connections. Both for connecting and reconnecting. |
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* |
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* @author Jin Liu (jin.liu@soyatec.com) |
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*/ |
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public class MessageConnectionHelper { |
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public static boolean debug = false; |
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|
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private MessageConnectionHelper() { |
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} |
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public static boolean canReorientSource(Message message, Element newSource) { |
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if(message == null || newSource == null) { |
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return false; |
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} |
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Element target = null; |
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MessageEnd receiveEvent = message.getReceiveEvent(); |
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if(receiveEvent instanceof OccurrenceSpecification) { |
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EList<Lifeline> covereds = ((OccurrenceSpecification)receiveEvent).getCovereds(); |
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if(!covereds.isEmpty()) { |
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target = covereds.get(0); |
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} |
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} else if(receiveEvent instanceof Gate) { |
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target = ((Gate)receiveEvent).getOwner(); |
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} |
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return canExist(message.getMessageSort(), newSource, target); |
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} |
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|
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public static boolean canReorientTarget(Message message, Element newTarget) { |
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if(message == null || newTarget == null) { |
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return false; |
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} |
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Element source = null; |
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MessageEnd sendEvent = message.getSendEvent(); |
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if(sendEvent instanceof OccurrenceSpecification) { |
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EList<Lifeline> covereds = ((OccurrenceSpecification)sendEvent).getCovereds(); |
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if(!covereds.isEmpty()) { |
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source = covereds.get(0); |
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} |
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} else if(sendEvent instanceof Gate) { |
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source = ((Gate)sendEvent).getOwner(); |
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} |
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return canExist(message.getMessageSort(), source, newTarget); |
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} |
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|
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public static boolean canExist(MessageSort messageSort, Element source, Element target) { |
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if(debug) { |
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print(messageSort, source, target); |
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} |
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if(MessageSort.ASYNCH_CALL_LITERAL == messageSort) { |
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return canExistAsynchMessage(source, target); |
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} else if(MessageSort.ASYNCH_SIGNAL_LITERAL == messageSort) { |
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if(source == null) { |
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return canExistFoundMessage(target); |
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} |
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if(target == null) { |
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return canExistLostMessage(source); |
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} |
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} else if(MessageSort.SYNCH_CALL_LITERAL == messageSort) { |
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return canExistSynchMessage(source, target); |
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} else if(MessageSort.CREATE_MESSAGE_LITERAL == messageSort) { |
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return canExistCreateMessage(source, target); |
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} else if(MessageSort.DELETE_MESSAGE_LITERAL == messageSort) { |
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return canExistDeleteMessage(source, target); |
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} else if(MessageSort.REPLY_LITERAL == messageSort) { |
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return canExistReplyMessage(source, target); |
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} |
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return false; |
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} |
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|
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private static void print(MessageSort messageSort, Element source, Element target) { |
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StringBuffer buf = new StringBuffer(); |
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if(messageSort != null) { |
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buf.append(messageSort.getName()); |
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buf.append("["); |
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} |
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buf.append("Source: "); |
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if(source != null) { |
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buf.append(source.eClass().getName()); |
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if(source instanceof NamedElement) { |
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buf.append("("); |
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buf.append(((NamedElement)source).getName()); |
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buf.append(")"); |
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} |
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} else { |
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buf.append("null"); |
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} |
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buf.append(", Target: "); |
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if(target != null) { |
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buf.append(target.eClass().getName()); |
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if(target instanceof NamedElement) { |
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buf.append("("); |
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buf.append(((NamedElement)target).getName()); |
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buf.append(")"); |
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} |
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} else { |
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buf.append("null"); |
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} |
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buf.append("]"); |
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System.out.println(new String(buf)); |
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} |
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|
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public static boolean canExistReplyMessage(Element source, Element target) { |
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if(target instanceof Message) { |
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return false; |
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} |
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if(source instanceof ExecutionSpecification && target instanceof Lifeline) { |
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if(((ExecutionSpecification)source).getCovereds().contains(target)) { |
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return false; |
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} |
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} |
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return true; |
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} |
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|
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public static boolean canExistDeleteMessage(Element source, Element target) { |
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return true; |
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} |
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public static boolean canExistCreateMessage(Element source, Element target) { |
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if(target != null) { |
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if(false == target instanceof Lifeline) { |
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return false; |
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} |
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if(target == source) { |
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return false; |
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} |
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} |
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return true; |
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} |
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|
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public static boolean canExistSynchMessage(Element source, Element target) { |
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if(source != null && false == source instanceof ExecutionSpecification) { |
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return false; |
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} |
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if(target != null && !(target instanceof ExecutionSpecification || target instanceof Lifeline)) { |
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return false; |
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} |
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return true; |
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} |
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|
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public static boolean canExistLostMessage(Element source) { |
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return true; |
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} |
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|
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public static boolean canExistFoundMessage(Element target) { |
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return true; |
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} |
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|
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public static boolean canExistAsynchMessage(Element source, Element target) { |
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if(target instanceof Message) { |
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return false; |
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} |
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return true; |
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} |
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|
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} |
