Ptidej-v5.2-master/POM Tests/data/ArgoUML_0.28/src/org/argouml/ocl/OCLUtil.java
// $Id: OCLUtil.java 16229 2008-12-03 20:34:13Z tfmorris $
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package org.argouml.ocl;

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

import org.argouml.model.Model;

/**
 * Helper methods for OCL support.
 *
 * @author Steffen Zschaler
 */
public final class OCLUtil {

    /** OCLUtil shall not be instantiated! */
    private OCLUtil () { }

    /**
     * Get the inner-most enclosing namespace for the model element.
     *
     * @param me the modelelement
     * @return a namespace
     */
    public static Object getInnerMostEnclosingNamespace (Object me) {

        if (Model.getFacade().isAFeature(me)) {
            me = Model.getFacade().getOwner(me);
        }

        if (!Model.getFacade().isANamespace(me)) {
            throw new IllegalArgumentException();
        }

	return me;
    }

    /**
     * Return a context string for the given model element.
     *
     * @param me the model element for which to create a context string.
     *
     * @return the context string for the model element.
     */
    public static String getContextString (final Object me) {
        // TODO: Do we want isaUMLElement here?
	if (me == null || !(Model.getFacade().isAModelElement(me))) {
	    return "";
	}
	Object mnsContext =
	    getInnerMostEnclosingNamespace (me);

	if (Model.getFacade().isABehavioralFeature(me)) {
	    StringBuffer sbContext = new StringBuffer ("context ");
	    sbContext.append (Model.getFacade().getName(mnsContext));
	    sbContext.append ("::");
	    sbContext.append (Model.getFacade().getName(me));
	    sbContext.append (" (");

	    Collection lParams = Model.getFacade().getParameters(me);
	    String sReturnType = null;
	    boolean fFirstParam = true;

	    for (Iterator i = lParams.iterator(); i.hasNext();) {
		Object mp = i.next(); //MParameter

		if (Model.getFacade().isReturn(mp)) {
		    sReturnType = Model.getFacade().getName(
                                    Model.getFacade().getType(mp));
                } else {
		    if (fFirstParam) {
			fFirstParam = false;
		    } else {
			sbContext.append ("; ");
		    }

		    sbContext.append(
		            Model.getFacade().getType(mp)).append(": ");
		    sbContext.append(Model.getFacade().getName(
		            Model.getFacade().getType(mp)));
		}
	    }

	    sbContext.append (")");

	    // The ocl toolkit does not like void return types
	    if (sReturnType != null && !sReturnType.equalsIgnoreCase("void")) {
		sbContext.append (": ").append (sReturnType);
	    }

	    return sbContext.toString();
	} else {
	    return "context " + Model.getFacade().getName(mnsContext);
	}
    }
}
