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Java > Open Source Codes > org > xquark > extractor > algebra > Constants


1 /*
2  * This file belongs to the XQuark distribution.
3  * Copyright (C) 2003 Universite de Versailles Saint-Quentin.
4  *
5  * This program is free software; you can redistribute it and/or
6  * modify it under the terms of the GNU Lesser General Public
7  * License as published by the Free Software Foundation; either
8  * version 2.1 of the License, or (at your option) any later version.
9  *
10  * This program is distributed in the hope that it will be useful,
11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13  * Lesser General Public License for more details.
14  *
15  * You should have received a copy of the GNU Lesser General Public
16  * License along with this program; if not, write to the Free Software
17  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307.
18  * You can also get it at http://www.gnu.org/licenses/lgpl.html
19  *
20  * For more information on this software, see http://www.xquark.org.
21  */
22
23 package org.xquark.extractor.algebra;
24
25 public interface Constants extends org.xquark.xquery.parser.util.Constants
26 {
27
28    // Boolean Operators
29 public final static int AND = 0;
30     public final static int OR = 1;
31     public final static int NOT = 2;
32     public final static String JavaDoc[] BOOLEAN_OPERATORS = {
33                     "AND",
34                     "OR",
35                     "NOT"
36                     };
37     // Aggregation functions
38 public final static int AVG = 0;
39     public final static int COUNT = 1;
40     public final static int MAX = 2;
41     public final static int MIN = 3;
42     public final static int SUM = 4;
43     public final static String JavaDoc[] AGGREGATEOPS = {
44                     "AVG",
45                     "COUNT",
46                     "MAX",
47                     "MIN",
48                     "SUM"
49                     };
50     public final static int LEFT_OUTER_JOIN = 0;
51     public final static int RIGHT_OUTER_JOIN = 1;
52
53 }
54
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