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 *     Nuxeo - initial API and implementation
018 *
019 * $Id$
020 */
021
022package org.nuxeo.ecm.core.query.sql.model;
023
024/**
025 * @author <a href="mailto:bs@nuxeo.com">Bogdan Stefanescu</a>
026 */
027public class HavingClause extends Clause {
028
029    private static final long serialVersionUID = 3686852512501042627L;
030
031    public final Predicate predicate;
032
033    public HavingClause() {
034        this(null);
035    }
036
037    public HavingClause(Predicate predicate) {
038        super("HAVING");
039        this.predicate = predicate;
040    }
041
042    @Override
043    public void accept(IVisitor visitor) {
044        visitor.visitHavingClause(this);
045    }
046
047    @Override
048    public boolean equals(Object obj) {
049        if (this == obj) {
050            return true;
051        }
052        if (obj instanceof HavingClause) {
053            if (predicate != null) {
054                return predicate.equals(((HavingClause) obj).predicate);
055            }
056        }
057        return false;
058    }
059
060    @Override
061    public int hashCode() {
062        if (predicate == null) {
063            return 0;
064        }
065        return predicate.hashCode();
066    }
067
068}