// $Id: CrConflictingComposites.java,v 1.12 2004/09/21 19:03:26 mvw Exp $
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// File: CrConflictingComposites.java
// Classes: CrConflictingComposites
// Original Author: jrobbins@ics.uci.edu
// $Id: CrConflictingComposites.java,v 1.12 2004/09/21 19:03:26 mvw Exp $

package org.argouml.uml.cognitive.critics;

import java.util.Collection;
import java.util.Iterator;
import org.argouml.cognitive.Designer;
import org.argouml.cognitive.critics.Critic;
import org.argouml.model.ModelFacade;
import org.argouml.model.uml.UmlHelper;

/** Well-formedness rule [2] for association end. See page 28 of UML 1.1
 *  Semantics. OMG document ad/97-08-04. */

public class CrConflictingComposites extends CrUML {

    /**
     * The constructor.
     * 
     */
    public CrConflictingComposites() {
	setHeadline("Remove Conflicting Composite Associations");

	addSupportedDecision(CrUML.DEC_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 (!(ModelFacade.isAClassifier(classifier))) return NO_PROBLEM;
	Collection conns = ModelFacade.getAssociationEnds(classifier);
	if (conns == null) return NO_PROBLEM;
	int compositeCount = 0;
	Iterator assocEnds = conns.iterator();
	while (assocEnds.hasNext()) {
            Object myEnd = assocEnds.next();
	    if (UmlHelper.getHelper().getCore()
                .equalsAggregationKind(myEnd, "composite")) {
		continue;
	    }
	    if (ModelFacade.getLower(myEnd) == 0) {
		continue;
	    }
	    Object asc = ModelFacade.getAssociation(myEnd);
	    if (asc != null
		&& UmlHelper.getHelper().getCore().hasCompositeEnd(asc)) {
		compositeCount++;
            }
	}
	if (compositeCount > 1) return PROBLEM_FOUND;
	return NO_PROBLEM;
    }
} /* end class CrConflictingComposites.java */