| /***************************************************************************** |
| * Copyright (c) 2016 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: |
| * Jeremie Tatibouet (CEA LIST) |
| * |
| *****************************************************************************/ |
| package org.eclipse.papyrus.moka.fuml.statemachines.Semantics.StateMachines; |
| |
| import org.eclipse.papyrus.moka.fuml.Semantics.CommonBehaviors.Communications.IEventOccurrence; |
| import org.eclipse.papyrus.moka.fuml.statemachines.interfaces.Semantics.StateMachines.IRegionActivation; |
| import org.eclipse.papyrus.moka.fuml.statemachines.interfaces.Semantics.StateMachines.IStateActivation; |
| import org.eclipse.uml2.uml.Vertex; |
| |
| public class ExternalTransitionActivation extends TransitionActivation { |
| |
| public void exitSource(IEventOccurrence eventOccurrence){ |
| // The exiting phase of the source vertex activation is conditioned both by |
| // the prerequisites that apply to leave the source and the prerequisites that |
| // apply to enter the target. |
| // 1 - The source can be exited and its target can be entered |
| // -> The source is exited using the common ancestor |
| // 2 - The source can be exited but is target is not ready to be entered |
| // -> The source is exited but the common ancestor is used. This implies |
| // the exiting phase is not propagated to parent state (if required) |
| if(this.vertexSourceActivation.isExitable(this, false)){ |
| if(this.vertexTargetActivation.isEnterable(this, false)){ |
| this.vertexSourceActivation.exit(this, eventOccurrence, this.getLeastCommonAncestor()); |
| }else{ |
| this.vertexSourceActivation.exit(this, eventOccurrence, null); |
| } |
| } |
| } |
| |
| public void enterTarget(IEventOccurrence eventOccurrence) { |
| // If the target vertex activation can be entered (i.e., its possible prerequisites |
| // are satisfied) then the entering process begins. Note that this process may lead |
| // to enter other states based on what is the common ancestor exiting between the |
| // the source and the target. Besides the prerequisites imposed by the target vertex |
| // activation there are no other constraints to enter the target state |
| if(this.vertexTargetActivation.isEnterable(this, false)){ |
| this.vertexTargetActivation.enter(this, eventOccurrence, this.getLeastCommonAncestor()); |
| }else{ |
| if(this.vertexTargetActivation instanceof StateActivation){ |
| IStateActivation targetStateActivation = (StateActivation) this.vertexTargetActivation; |
| int i = 0; |
| IRegionActivation containingRegionActivation = null; |
| while(containingRegionActivation == null && i < targetStateActivation.getRegionActivation().size()){ |
| IRegionActivation currentActivation = targetStateActivation.getRegionActivation().get(i); |
| if(currentActivation.getVertexActivation((Vertex)this.vertexSourceActivation.getNode())!=null){ |
| containingRegionActivation = currentActivation; |
| } |
| i++; |
| } |
| if(containingRegionActivation!=null){ |
| containingRegionActivation.setCompleted(true); |
| if(targetStateActivation.hasCompleted()){ |
| targetStateActivation.complete(); |
| } |
| } |
| } |
| } |
| } |
| } |