001/*
002 *  Copyright 2013 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.repository;
017
018import org.ametys.plugins.repository.RepositoryConstants;
019import org.ametys.plugins.repository.query.expression.Expression;
020
021/**
022 * Constructs an {@link Expression} for sub-content comparison
023 */
024public class SubContentExpression implements Expression
025{
026    /**
027     * Creates the expression to test the existence of sub-contents
028     */
029    public SubContentExpression()
030    {
031        // Nothing
032    }
033    
034    @Override
035    public String build()
036    {
037        return "@" + RepositoryConstants.NAMESPACE_PREFIX_INTERNAL + ":subContent";
038    }
039
040}