Ptidej-v5.2-master/POM Tests/data/ArgoUML_0.28/src/org/argouml/ocl/CriticOclEvaluator.java
// $Id: CriticOclEvaluator.java 14241 2008-03-28 06:31:06Z tfmorris $
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package org.argouml.ocl;

import org.tigris.gef.ocl.ExpansionException;


/**
 * CriticOclEvaluator is singleton version of OCLEvaluator which is used for
 * evaluating simple OCL expressions used in the critiques.<p>
 * 
 * Implementation History: As best I was able to reconstruct the history in
 * early 2007, OclEvaluator was originally implemented as a singleton, but that
 * was changed in September, 2004 because of some perceived problems, but then
 * it was discovered that the Critic subsystem depended on the singleton
 * pattern, so an earlier version of OclEvaluator was reintroduced with a new
 * name. Because of the large amount of duplicate code between the two classes,
 * this was refactored in March, 2007 to use an instance of the main
 * OclEvaluator class.
 * 
 * @stereotype singleton
 * @deprecated for 0.25.2 by tfmorris - use {@link OCLEvaluator}
 */
@Deprecated
public class CriticOclEvaluator {

    private static final CriticOclEvaluator INSTANCE =
        new CriticOclEvaluator();

    private static final OCLEvaluator EVALUATOR =
        new OCLEvaluator();
    
    private CriticOclEvaluator() {
        // no instantiations
    }

    /**
     * @return the singleton of CriticOclEvaluator
     */
    public static final CriticOclEvaluator getInstance() {
        return INSTANCE;
    }

    /*
     * @see OCLEvaluator#evalToString(java.lang.Object, java.lang.String)
     */
    public synchronized String evalToString(Object self, String expr)
        throws ExpansionException {
        
        return EVALUATOR.evalToString(self, expr);
    }

    /*
     * @see OCLEvaluator#evalToString(java.lang.Object, java.lang.String, java.lang.String)
     */
    public synchronized String evalToString(
            Object self,
            String expr,
            String sep)
    	throws ExpansionException {
        
        return EVALUATOR.evalToString(self, expr, sep);
    }

}