Ptidej-v5.2-master/POM Tests/data/ArgoUML_0.28/src/org/argouml/uml/cognitive/critics/CrInvalidJoin.java
// $Id: CrInvalidJoin.java 15512 2008-08-05 17:33:53Z maurelio1234 $
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package org.argouml.uml.cognitive.critics;

import java.util.Collection;
import java.util.HashSet;
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 join state has the wrong number of
 * transitions.  Implements constraint [4] on Pseudostate in the UML
 * Semantics v1.1, pp. 104.
 *
 * Well-formedness rule [3] for PseudoState. See page 137 of UML 1.4
 * Semantics. OMG document UML 1.4.2 formal/04-07-02.
 *
 * @author jrobbins
 */
public class CrInvalidJoin extends CrUML {

    /**
     * The constructor.
     */
    public CrInvalidJoin() {
        setupHeadAndDesc();
	addSupportedDecision(UMLDecision.STATE_MACHINES);
	addTrigger("outgoing");
    }

    /*
     * @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().isAPseudostate(dm))) {
	    return NO_PROBLEM;
	}
	Object k = Model.getFacade().getKind(dm);
	if (!Model.getFacade().equalsPseudostateKind(k,
                Model.getPseudostateKind().getJoin())) {
	    return NO_PROBLEM;
	}
	Collection outgoing = Model.getFacade().getOutgoings(dm);
	Collection incoming = Model.getFacade().getIncomings(dm);
	int nOutgoing = outgoing == null ? 0 : outgoing.size();
	int nIncoming = incoming == null ? 0 : incoming.size();
	if (nOutgoing > 1) {
	    return PROBLEM_FOUND;
	}
	if (nIncoming == 1) {
	    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().getPseudostate());
        return ret;
    }
    
}

