001    /*
002     * Copyright (c) 2005 Einar Pehrson <einar@pehrson.nu>.
003     *
004     * This file is part of
005     * CleanSheets - a spreadsheet application for the Java platform.
006     *
007     * CleanSheets is free software; you can redistribute it and/or modify
008     * it under the terms of the GNU General Public License as published by
009     * the Free Software Foundation; either version 2 of the License, or
010     * (at your option) any later version.
011     *
012     * CleanSheets is distributed in the hope that it will be useful,
013     * but WITHOUT ANY WARRANTY; without even the implied warranty of
014     * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
015     * GNU General Public License for more details.
016     *
017     * You should have received a copy of the GNU General Public License
018     * along with CleanSheets; if not, write to the Free Software
019     * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
020     */
021    package csheets.core.formula.lang;
022    
023    import csheets.core.Value;
024    
025    /**
026     * A relational less-than operator.
027     * @author Einar Pehrson
028     */
029    public class LessThan extends RelationalOperator {
030    
031            /** The unique version identifier used for serialization */
032            private static final long serialVersionUID = -2984645567061220967L;
033    
034            /**
035             * Creates a new relational less-than operator.
036             */
037            public LessThan() {}
038    
039            public <T> boolean compare(Comparable<T> left, T right) {
040                    return left.compareTo(right) < 0;
041            }
042    
043            public String getIdentifier() {
044                    return "<";
045            }
046    
047            public Value.Type getOperandValueType() {
048                    return Value.Type.NUMERIC;
049            }
050    
051            public String toString() {
052                    return getIdentifier();
053            }
054    }