/* $Id: CrConflictingComposites.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) 1996-2006 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
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// 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
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// UNIVERSITY OF CALIFORNIA BE LIABLE TO ANY PARTY FOR DIRECT, INDIRECT,
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package org.argouml.uml.cognitive.critics;

import java.util.Collection;
import java.util.Iterator;

import org.argouml.cognitive.Critic;
import org.argouml.cognitive.Designer;
import org.argouml.model.Model;
import org.argouml.uml.cognitive.UMLDecision;

/**
 * Well-formedness rule [2] for association end. See page 28 of UML 1.1
 * Semantics. OMG document ad/97-08-04.
 * 
 * Well-formedness rule [2] for AssociationEnd. See page 53 of UML 1.4
 * Semantics. OMG document UML 1.4.2 formal/04-07-02.
 *
 * @author jrobbins
 */
public class CrConflictingComposites extends CrUML {

    /**
     * The constructor.
     *
     */
    public CrConflictingComposites() {
        setupHeadAndDesc();

	addSupportedDecision(UMLDecision.CONTAINMENT);
	setKnowledgeTypes(Critic.KT_SEMANTICS);
	// no good trigger
    }

    /*
     * @see org.argouml.uml.cognitive.critics.CrUML#predicate2(
     *      java.lang.Object, org.argouml.cognitive.Designer)
     */
    public boolean predicate2(Object classifier, Designer dsgr) {
	if (!(Model.getFacade().isAClassifier(classifier))) {
	    return NO_PROBLEM;
	}
	Collection conns = Model.getFacade().getAssociationEnds(classifier);
	if (conns == null) {
	    return NO_PROBLEM;
	}
	int compositeCount = 0;
	Iterator assocEnds = conns.iterator();
	while (assocEnds.hasNext()) {
            Object myEnd = assocEnds.next();
	    if (Model.getCoreHelper()
                .equalsAggregationKind(myEnd, "composite")) {
		continue;
	    }
	    if (Model.getFacade().getLower(myEnd) == 0) {
		continue;
	    }
	    Object asc = Model.getFacade().getAssociation(myEnd);
	    if (asc != null
		&& Model.getCoreHelper().hasCompositeEnd(asc)) {
		compositeCount++;
            }
	}
	if (compositeCount > 1) {
	    return PROBLEM_FOUND;
	}
	return NO_PROBLEM;
    }
} /* end class CrConflictingComposites */