1 package org.apache.torque.util;
2
3 /* ====================================================================
4 * The Apache Software License, Version 1.1
5 *
6 * Copyright (c) 2001 The Apache Software Foundation. All rights
7 * reserved.
8 *
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
11 * are met:
12 *
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 *
16 * 2. Redistributions in binary form must reproduce the above copyright
17 * notice, this list of conditions and the following disclaimer in
18 * the documentation and/or other materials provided with the
19 * distribution.
20 *
21 * 3. The end-user documentation included with the redistribution,
22 * if any, must include the following acknowledgment:
23 * "This product includes software developed by the
24 * Apache Software Foundation (http://www.apache.org/)."
25 * Alternately, this acknowledgment may appear in the software itself,
26 * if and wherever such third-party acknowledgments normally appear.
27 *
28 * 4. The names "Apache" and "Apache Software Foundation" and
29 * "Apache Turbine" must not be used to endorse or promote products
30 * derived from this software without prior written permission. For
31 * written permission, please contact apache@apache.org.
32 *
33 * 5. Products derived from this software may not be called "Apache",
34 * "Apache Turbine", nor may "Apache" appear in their name, without
35 * prior written permission of the Apache Software Foundation.
36 *
37 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
38 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
39 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
40 * DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
41 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
42 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
43 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
44 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
45 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
46 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
47 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
48 * SUCH DAMAGE.
49 * ====================================================================
50 *
51 * This software consists of voluntary contributions made by many
52 * individuals on behalf of the Apache Software Foundation. For more
53 * information on the Apache Software Foundation, please see
54 * <http://www.apache.org/>.
55 */
56
57
58 /***
59 * A typesafe enum of SQL string fragments. Used by Criteria and SqlExpression
60 * to build queries. Criteria also makes most of the constants available
61 * in order to specify a criterion.
62 *
63 * @author <a href="mailto:jmcnally@collab,net"></a>
64 * @version $Id: SqlEnum.java,v 1.5 2002/10/14 01:44:08 stephenh Exp $
65 * @since 3.0
66 */
67 class SqlEnum implements java.io.Serializable
68 {
69 private final String s;
70
71 private SqlEnum(String s)
72 {
73 this.s = s;
74 }
75
76 public final String toString()
77 {
78 return s;
79 }
80
81 public static final SqlEnum EQUAL =
82 new SqlEnum("=");
83 public static final SqlEnum NOT_EQUAL =
84 new SqlEnum("<>");
85 public static final SqlEnum ALT_NOT_EQUAL =
86 new SqlEnum("!=");
87 public static final SqlEnum GREATER_THAN =
88 new SqlEnum(">");
89 public static final SqlEnum LESS_THAN =
90 new SqlEnum("<");
91 public static final SqlEnum GREATER_EQUAL =
92 new SqlEnum(">=");
93 public static final SqlEnum LESS_EQUAL =
94 new SqlEnum("<=");
95 public static final SqlEnum LIKE =
96 new SqlEnum(" LIKE ");
97 public static final SqlEnum NOT_LIKE =
98 new SqlEnum(" NOT LIKE ");
99 public static final SqlEnum IN =
100 new SqlEnum(" IN ");
101 public static final SqlEnum NOT_IN =
102 new SqlEnum(" NOT IN ");
103 public static final SqlEnum CUSTOM =
104 new SqlEnum("CUSTOM");
105 public static final SqlEnum JOIN =
106 new SqlEnum("JOIN");
107 public static final SqlEnum DISTINCT =
108 new SqlEnum("DISTINCT ");
109 public static final SqlEnum ALL =
110 new SqlEnum("ALL ");
111 public static final SqlEnum ASC =
112 new SqlEnum("ASC");
113 public static final SqlEnum DESC =
114 new SqlEnum("DESC");
115 public static final SqlEnum ISNULL =
116 new SqlEnum(" IS NULL ");
117 public static final SqlEnum ISNOTNULL =
118 new SqlEnum(" IS NOT NULL ");
119 public static final SqlEnum CURRENT_DATE =
120 new SqlEnum("CURRENT_DATE");
121 public static final SqlEnum CURRENT_TIME =
122 new SqlEnum("CURRENT_TIME");
123 }
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