/* $Id: CrUtilityViolated.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
// 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,
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package org.argouml.uml.cognitive.critics;

import java.util.ArrayList;
import java.util.Collection;
import java.util.HashSet;
import java.util.Iterator;
import java.util.Set;

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

/**
 * A critic to detect when a class can never have instances (of
 * itself of any subclasses). This is done by checking that there
 * are no instance operations or attributes in the class itself
 * or in any of the realized interfaces or inherited classes.
 *
 * @author jrobbins
 */
public class CrUtilityViolated extends CrUML {

    /**
     * The constructor.
     */
    public CrUtilityViolated() {
        setupHeadAndDesc();
        addSupportedDecision(UMLDecision.STORAGE);
        addSupportedDecision(UMLDecision.STEREOTYPES);
        addSupportedDecision(UMLDecision.CLASS_SELECTION);
        addTrigger("stereotype");
        addTrigger("behavioralFeature");
    }

    /*
     * @see org.argouml.uml.cognitive.critics.CrUML#predicate2(
     *      java.lang.Object, org.argouml.cognitive.Designer)
     */
    @Override
    public boolean predicate2(Object dm, Designer dsgr) {
        // we could check for base class of the stereotype but the
	// condition normally covers it all.
        if (!(Model.getFacade().isAClassifier(dm))) {
            return NO_PROBLEM;
        }
	if (!(Model.getFacade().isUtility(dm))) {
	    return NO_PROBLEM;
	}

	Collection classesToCheck = new ArrayList();
	classesToCheck.addAll(Model.getCoreHelper().getSupertypes(dm));
	classesToCheck.addAll(
	    Model.getCoreHelper().getAllRealizedInterfaces(dm));
	classesToCheck.add(dm);
	Iterator it = classesToCheck.iterator();
	while (it.hasNext()) {
	    Object o = it.next();
	    if (!Model.getFacade().isAInterface(o)) {
		Iterator it2 = Model.getFacade().getAttributes(o).iterator();
		while (it2.hasNext()) {
		    if (!Model.getFacade().isStatic(it2.next())) {
			return PROBLEM_FOUND;
		    }
		}
	    }
	    Iterator it2 = Model.getFacade().getOperations(o).iterator();
	    while (it2.hasNext()) {
		if (!Model.getFacade().isStatic(it2.next())) {
		    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().getClassifier());
        return ret;
    }
    
}