1 /*
2 * ModeShape (http://www.modeshape.org)
3 * See the COPYRIGHT.txt file distributed with this work for information
4 * regarding copyright ownership. Some portions may be licensed
5 * to Red Hat, Inc. under one or more contributor license agreements.
6 * See the AUTHORS.txt file in the distribution for a full listing of
7 * individual contributors.
8 *
9 * ModeShape is free software. Unless otherwise indicated, all code in ModeShape
10 * is licensed to you under the terms of the GNU Lesser General Public License as
11 * published by the Free Software Foundation; either version 2.1 of
12 * the License, or (at your option) any later version.
13 *
14 * ModeShape is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17 * Lesser General Public License for more details.
18 *
19 * You should have received a copy of the GNU Lesser General Public
20 * License along with this software; if not, write to the Free
21 * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
22 * 02110-1301 USA, or see the FSF site: http://www.fsf.org.
23 */
24 package org.modeshape.jcr.api.query.qom;
25
26 /**
27 * Represents a set query.
28 */
29 public interface SetQuery extends QueryCommand {
30 /**
31 * Get the left-hand query.
32 *
33 * @return the left-hand query; never null
34 */
35 public QueryCommand getLeft();
36
37 /**
38 * Get the right-hand query.
39 *
40 * @return the right-hand query; never null
41 */
42 public QueryCommand getRight();
43
44 /**
45 * Get the set operation for this query.
46 *
47 * @return the operation; never null
48 */
49 public String getOperation();
50
51 /**
52 * Return whether this set query is a 'UNION ALL' or 'INTERSECT ALL' or 'EXCEPT ALL' query.
53 *
54 * @return true if this is an 'ALL' query, or false otherwise
55 */
56 public boolean isAll();
57 }