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Java > Open Source Codes > com > mysql > jdbc > MysqlParameterMetadata


1 /*
2    Copyright (C) 2005 MySQL AB
3
4    This program is free software; you can redistribute it and/or modify
5    it under the terms of version 2 of the GNU General Public License as
6    published by the Free Software Foundation.
7
8    There are special exceptions to the terms and conditions of the GPL
9    as it is applied to this software. View the full text of the
10    exception in file EXCEPTIONS-CONNECTOR-J in the directory of this
11    software distribution.
12
13    This program is distributed in the hope that it will be useful,
14    but WITHOUT ANY WARRANTY; without even the implied warranty of
15    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16    GNU General Public License for more details.
17
18    You should have received a copy of the GNU General Public License
19    along with this program; if not, write to the Free Software
20    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
21
22 */
23
24 package com.mysql.jdbc;
25
26 import java.sql.ParameterMetaData JavaDoc;
27 import java.sql.SQLException JavaDoc;
28
29 public class MysqlParameterMetadata implements ParameterMetaData JavaDoc {
30     
31     ResultSetMetaData metadata = null;
32     int parameterCount = 0;
33     
34     
35     MysqlParameterMetadata(Field[] fieldInfo, int parameterCount) {
36         this.metadata = new ResultSetMetaData(fieldInfo);
37         
38         this.parameterCount = parameterCount;
39     }
40     
41     public int getParameterCount() throws SQLException JavaDoc {
42         return this.parameterCount;
43     }
44
45     public int isNullable(int arg0) throws SQLException JavaDoc {
46         checkAvailable();
47         
48         return this.metadata.isNullable(arg0);
49     }
50
51     private void checkAvailable() throws SQLException JavaDoc {
52         if (this.metadata == null) {
53             throw new SQLException JavaDoc(
54                 "Parameter metadata not available for the given statement",
55                 SQLError.SQL_STATE_DRIVER_NOT_CAPABLE);
56         }
57     }
58
59     public boolean isSigned(int arg0) throws SQLException JavaDoc {
60         checkAvailable();
61         
62         return (this.metadata.isSigned(arg0));
63     }
64
65     public int getPrecision(int arg0) throws SQLException JavaDoc {
66         checkAvailable();
67         
68         return (this.metadata.getPrecision(arg0));
69     }
70
71     public int getScale(int arg0) throws SQLException JavaDoc {
72         checkAvailable();
73         
74         return (this.metadata.getScale(arg0));
75     }
76
77     public int getParameterType(int arg0) throws SQLException JavaDoc {
78         checkAvailable();
79         
80         return (this.metadata.getColumnType(arg0));
81     }
82
83     public String JavaDoc getParameterTypeName(int arg0) throws SQLException JavaDoc {
84         checkAvailable();
85         
86         return (this.metadata.getColumnTypeName(arg0));
87     }
88
89     public String JavaDoc getParameterClassName(int arg0) throws SQLException JavaDoc {
90         checkAvailable();
91         
92         return (this.metadata.getColumnClassName(arg0));
93     }
94
95     public int getParameterMode(int arg0) throws SQLException JavaDoc {
96         return parameterModeIn;
97     }
98 }
99
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