/* $Id: CrInvalidJoinTriggerOrGuard.java 17849 2010-01-12 19:50:34Z linus $

  *****************************************************************************

  * Copyright (c) 2009 Contributors - see below

  * 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:

  *    maurelio1234

  *****************************************************************************

  *

  * Some portions of this file was previously release using the BSD License:

  */

 // Copyright (c) 2003-2007 The Regents of the University of California. All

 // Rights Reserved. Permission to use, copy, modify, and distribute this

 // software and its documentation without fee, and without a written

 // agreement is hereby granted, provided that the above copyright notice

 // and this paragraph appear in all copies.  This software program and

 // documentation are copyrighted by The Regents of the University of

 // California. The software program and documentation are supplied "AS

 // IS", without any accompanying services from The Regents. The Regents

 // does not warrant that the operation of the program will be

 // uninterrupted or error-free. The end-user understands that the program

 // was developed for research purposes and is advised not to rely

 // exclusively on the program for any reason.  IN NO EVENT SHALL THE

 // UNIVERSITY OF CALIFORNIA BE LIABLE TO ANY PARTY FOR DIRECT, INDIRECT,

 // SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES, INCLUDING LOST PROFITS,

 // ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF

 // THE UNIVERSITY OF CALIFORNIA HAS BEEN ADVISED OF THE POSSIBILITY OF

 // SUCH DAMAGE. THE UNIVERSITY OF CALIFORNIA SPECIFICALLY DISCLAIMS ANY

 // WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF

 // MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE

 // PROVIDED HEREUNDER IS ON AN "AS IS" BASIS, AND THE UNIVERSITY OF

 // CALIFORNIA HAS NO OBLIGATIONS TO PROVIDE MAINTENANCE, SUPPORT,

 // UPDATES, ENHANCEMENTS, OR MODIFICATIONS.

 package org.argouml.uml.cognitive.critics;

 import java.util.HashSet;

 import java.util.Set;

 import org.argouml.cognitive.Designer;

 import org.argouml.model.Model;

 import org.argouml.uml.cognitive.UMLDecision;

 /**

  * UML 1.5 Well-formedness rule [2] for Transition.

  *

  * Well-formedness rule [2] for Transition. See page 139 of UML 1.4

  * Semantics. OMG document UML 1.4.2 formal/04-07-02.

  * 

  * @author pepargouml@yahoo.es

  */

 public class CrInvalidJoinTriggerOrGuard extends CrUML {

     /**

      * The constructor.

      */

     public CrInvalidJoinTriggerOrGuard() {

         setupHeadAndDesc();

         addSupportedDecision(UMLDecision.STATE_MACHINES);

         addTrigger("trigger");

         addTrigger("guard");

     }

     /*

      * @see org.argouml.uml.cognitive.critics.CrUML#predicate2(java.lang.Object,

      *      org.argouml.cognitive.Designer)

      */

     public boolean predicate2(Object dm, Designer dsgr) {

         if (!(Model.getFacade().isATransition(dm))) {

             return NO_PROBLEM;

         }

         Object tr = dm;

         Object t = Model.getFacade().getTrigger(tr);

         Object g = Model.getFacade().getGuard(tr);

         Object dv = Model.getFacade().getTarget(tr);

         if (!(Model.getFacade().isAPseudostate(dv))) {

             return NO_PROBLEM;

         }

         // WFR Transitions, OMG UML 1.3

         Object k = Model.getFacade().getKind(dv);

         if (!Model.getFacade().

                 equalsPseudostateKind(k,

                         Model.getPseudostateKind().getJoin())) {

             return NO_PROBLEM;

         }

         boolean hasTrigger =

                 (t != null && Model.getFacade().getName(t) != null

                 && Model.getFacade().getName(t).length() > 0);

         if (hasTrigger) {

             return PROBLEM_FOUND;

         }

         boolean noGuard =

             (g == null

                 || Model.getFacade().getExpression(g) == null

                 || Model.getFacade().getBody(Model.getFacade()

                         .getExpression(g)) == null

                 || Model.getFacade().getBody(Model.getFacade()

                         .getExpression(g)).toString().length() == 0);

         if (!noGuard) {

             return PROBLEM_FOUND;

         }

         return NO_PROBLEM;

     }

     /*

      * @see org.argouml.uml.cognitive.critics.CrUML#getCriticizedDesignMaterials()

      */

     public Set<Object> getCriticizedDesignMaterials() {

         Set<Object> ret = new HashSet<Object>();

         ret.add(Model.getMetaTypes().getTransition());

         return ret;

     }

     /**

      * The UID.

      */

     private static final long serialVersionUID = 1052354516940735748L;

 }