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Java > Open Source Codes > com > caucho > sql > PreparedStatementKey


1 /*
2  * Copyright (c) 1998-2006 Caucho Technology -- all rights reserved
3  *
4  * This file is part of Resin(R) Open Source
5  *
6  * Each copy or derived work must preserve the copyright notice and this
7  * notice unmodified.
8  *
9  * Resin Open Source is free software; you can redistribute it and/or modify
10  * it under the terms of the GNU General Public License as published by
11  * the Free Software Foundation; either version 2 of the License, or
12  * (at your option) any later version.
13  *
14  * Resin Open Source 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, or any warranty
17  * of NON-INFRINGEMENT. See the GNU General Public License for more
18  * details.
19  *
20  * You should have received a copy of the GNU General Public License
21  * along with Resin Open Source; if not, write to the
22  * Free SoftwareFoundation, Inc.
23  * 59 Temple Place, Suite 330
24  * Boston, MA 02111-1307 USA
25  *
26  * @author Scott Ferguson
27  */
28
29 package com.caucho.sql;
30
31 /**
32  * Represtents a prepared statement cache key.
33  */
34 class PreparedStatementKey {
35   private String JavaDoc _sql;
36   private int _resultType;
37
38   PreparedStatementKey()
39   {
40   }
41
42   PreparedStatementKey(String JavaDoc sql)
43   {
44     init(sql);
45   }
46
47   PreparedStatementKey(String JavaDoc sql, int resultType)
48   {
49     _sql = sql;
50     _resultType = resultType;
51   }
52
53   void init(String JavaDoc sql, int resultType)
54   {
55     _sql = sql;
56     _resultType = resultType;
57   }
58
59   void init(String JavaDoc sql)
60   {
61     _sql = sql;
62     _resultType = -1;
63   }
64
65   PreparedStatementKey copy()
66   {
67     return new PreparedStatementKey(_sql, _resultType);
68   }
69
70   public int hashCode()
71   {
72     int hash = _sql.hashCode();
73
74     hash = 65521 * hash + _resultType;
75
76     return hash;
77   }
78
79   public boolean equals(Object JavaDoc o)
80   {
81     if (o == null || ! getClass().equals(o.getClass()))
82       return false;
83
84     PreparedStatementKey key = (PreparedStatementKey) o;
85
86     if (! _sql.equals(key._sql))
87       return false;
88     else if (_resultType != key._resultType)
89       return false;
90     else
91       return true;
92   }
93 }
94
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