/*
 *    GeoTools - The Open Source Java GIS Toolkit
 *    http://geotools.org
 * 
 *    (C) 2006-2008, Open Source Geospatial Foundation (OSGeo)
 *        
 *    This library is free software; you can redistribute it and/or
 *    modify it under the terms of the GNU Lesser General Public
 *    License as published by the Free Software Foundation;
 *    version 2.1 of the License.
 *
 *    This library is distributed in the hope that it will be useful,
 *    but WITHOUT ANY WARRANTY; without even the implied warranty of
 *    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 *    Lesser General Public License for more details.
 */
package org.geotools.filter;

import org.opengis.filter.FilterVisitor;
import org.opengis.filter.PropertyIsNotEqualTo;
import org.opengis.filter.expression.Expression;

public class IsNotEqualToImpl extends MultiCompareFilterImpl
	implements PropertyIsNotEqualTo {
    
    IsEqualsToImpl delegate;

	protected IsNotEqualToImpl(org.opengis.filter.FilterFactory factory) {
		this(factory,null,null);
	}
	
	protected IsNotEqualToImpl(org.opengis.filter.FilterFactory factory, Expression e1, Expression e2) {
		this( factory, e1, e2, true );
	}
	
	protected IsNotEqualToImpl(org.opengis.filter.FilterFactory factory, MatchAction matchAction) {
            this(factory,null,null, matchAction);
        }
        
        protected IsNotEqualToImpl(org.opengis.filter.FilterFactory factory, Expression e1, Expression e2, MatchAction matchAction) {
            this( factory, e1, e2, true, matchAction );
        }
	
	protected IsNotEqualToImpl(org.opengis.filter.FilterFactory factory, Expression expression1, Expression expression2, boolean matchCase ) {
	    this( factory, expression1, expression2, matchCase, MatchAction.ANY );
	}
	
	protected IsNotEqualToImpl(org.opengis.filter.FilterFactory factory, Expression expression1, Expression expression2, boolean matchCase, MatchAction matchAction ) {
            super(factory, expression1, expression2, matchCase, matchAction);
            delegate = new IsEqualsToImpl(factory, expression1, expression2, matchCase);
            
            //backwards compat with old type system
            this.filterType = COMPARE_NOT_EQUALS;
	}

	@Override
	public boolean evaluateInternal(Object v1, Object v2) {
		return !delegate.evaluateInternal(v1, v2);
	}
	
	public Object accept(FilterVisitor visitor, Object extraData) {
		return visitor.visit( this, extraData );
	}

}