LessThanFunction.java :  » Database-DBMS » axion » org » axiondb » functions » Java Open Source

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axion » org » axiondb » functions » LessThanFunction.java
/*
 * $Id: LessThanFunction.java,v 1.5 2005/12/26 20:33:24 ahimanikya Exp $
 * =======================================================================
 * Copyright (c) 2003-2005 Axion Development Team.  All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above
 *    copyright notice, this list of conditions and the following
 *    disclaimer.
 *
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in
 *    the documentation and/or other materials provided with the
 *    distribution.
 *
 * 3. The names "Tigris", "Axion", nor the names of its contributors may
 *    not be used to endorse or promote products derived from this
 *    software without specific prior written permission.
 *
 * 4. Products derived from this software may not be called "Axion", nor
 *    may "Tigris" or "Axion" appear in their names without specific prior
 *    written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
 * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 * =======================================================================
 */

package org.axiondb.functions;

import org.axiondb.FunctionFactory;

/**
 * @version $Revision: 1.5 $ $Date: 2005/12/26 20:33:24 $
 * @author Rodney Waldhoff
 */
public class LessThanFunction extends ComparisonFunction implements ScalarFunction, FunctionFactory {
    public LessThanFunction() {
        super("LESSTHAN");
    }

    public ConcreteFunction makeNewInstance() {
        return new LessThanFunction();
    }

    protected boolean compare(int value) {
        return value < 0;
    }

    protected ComparisonFunction makeFlipFunction() {
        return new GreaterThanFunction();
    }
    
    public String getOperatorString() {
        return "<";
    }
}
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