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 logical "not" of another {@link Expression}.
020 */
021public class NotExpression implements Expression
022{
023    private Expression _expr;
024
025    /**
026     * Creates the "not" Expression.
027     * @param expr the operand
028     */
029    public NotExpression(Expression expr)
030    {
031        _expr = expr;
032    }
033
034    public String build()
035    {
036        return "not(" + _expr.build() + ")";
037    }
038}