001/*
002 *  Copyright 2014 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.cms.search.query;
017
018/**
019 * Represents a {@link Query} corresponding to the logical negation of another {@link Query}.
020 */
021public class NotQuery implements Query
022{
023    
024    /** The negated query. */
025    protected Query _query;
026    
027    /**
028     * Build a NotQuery object.
029     * @param query the negated query.
030     */
031    public NotQuery(Query query)
032    {
033        _query = query;
034    }
035    
036    /**
037     * Get the negated query.
038     * @return the negated query.
039     */
040    public Query getQuery()
041    {
042        return _query;
043    }
044    
045    @Override
046    public String build() throws QuerySyntaxException
047    {
048        String queryString = _query.build();
049        if (queryString.isEmpty())
050        {
051            return "";
052        }
053        else
054        {
055            return "(*:* -(" + _query.build() + "))";
056        }
057    }
058    
059}