001/*
002 * (C) Copyright 2006-2011 Nuxeo SA (http://nuxeo.com/) and others.
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 *
016 * Contributors:
017 *     Bogdan Stefanescu
018 *     Florent Guillaume
019 */
020
021package org.nuxeo.ecm.core.query.sql.model;
022
023/**
024 * @author Bogdan Stefanescu
025 * @author Florent Guillaume
026 */
027public class OrderByClause extends Clause {
028
029    private static final long serialVersionUID = 1L;
030
031    public final OrderByList elements;
032
033    public OrderByClause(OrderByList orderBy) {
034        this(orderBy, false);
035    }
036
037    public OrderByClause(OrderByList orderBy, boolean isDescendent) {
038        super("ORDER BY");
039        elements = orderBy;
040    }
041
042    @Override
043    public boolean equals(Object obj) {
044        if (this == obj) {
045            return true;
046        }
047        if (obj instanceof OrderByClause) {
048            return elements.equals(((OrderByClause) obj).elements);
049        }
050        return false;
051    }
052
053    @Override
054    public int hashCode() {
055        return elements.hashCode();
056    }
057
058    @Override
059    public void accept(IVisitor visitor) {
060        visitor.visitOrderByClause(this);
061    }
062
063    @Override
064    public String toString() {
065        return elements.toString();
066    }
067
068}