001/*
002 *  Copyright 2010 Anyware Services
003 *
004 *  Licensed under the Apache License, Version 2.0 (the "License");
005 *  you may not use this file except in compliance with the License.
006 *  You may obtain a copy of the License at
007 *
008 *      http://www.apache.org/licenses/LICENSE-2.0
009 *
010 *  Unless required by applicable law or agreed to in writing, software
011 *  distributed under the License is distributed on an "AS IS" BASIS,
012 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
013 *  See the License for the specific language governing permissions and
014 *  limitations under the License.
015 */
016package org.ametys.plugins.repository.query.expression;
017
018/**
019 * Constructs an {@link Expression} corresponding to the double comparison with a metadata.
020 */
021public class DoubleExpression implements Expression
022{
023    private double _value;
024    private Operator _operator;
025    private MetadataExpression _metadata;
026
027    /**
028     * Creates the comparison Expression.
029     * @param metadata the metadata name
030     * @param operator the operator to make the comparison
031     * @param value the double value
032     */
033    public DoubleExpression(String metadata, Operator operator, double value)
034    {
035        _value = value;
036        _operator = operator;
037        _metadata = new MetadataExpression(metadata);
038    }
039    
040    /**
041     * Creates the comparison Expression.
042     * @param metadata the metadata name
043     * @param operator the operator to make the comparison
044     * @param value the double value
045     * @param unversioned true if the metadata is unversioned, false otherwise.
046     */
047    public DoubleExpression(String metadata, Operator operator, double value, boolean unversioned)
048    {
049        _value = value;
050        _operator = operator;
051        _metadata = new MetadataExpression(metadata, unversioned);
052    }
053
054    public String build()
055    {
056        return _metadata.build() + " " + _operator + " " + Double.toString(_value);
057    }
058}