KickJava   Java API By Example, From Geeks To Geeks.

Java > Open Source Codes > com > lutris > appserver > server > sessionEnhydra > persistent > KeysQuery


1
2 /*
3  * Enhydra Java Application Server Project
4  *
5  * The contents of this file are subject to the Enhydra Public License
6  * Version 1.1 (the "License"); you may not use this file except in
7  * compliance with the License. You may obtain a copy of the License on
8  * the Enhydra web site ( http://www.enhydra.org/ ).
9  *
10  * Software distributed under the License is distributed on an "AS IS"
11  * basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
12  * the License for the specific terms governing rights and limitations
13  * under the License.
14  *
15  * The Initial Developer of the Enhydra Application Server is Lutris
16  * Technologies, Inc. The Enhydra Application Server and portions created
17  * by Lutris Technologies, Inc. are Copyright Lutris Technologies, Inc.
18  * All Rights Reserved.
19  *
20  * Contributor(s):
21  *
22  * $Id: KeysQuery.java,v 1.2 2005/03/24 10:51:20 slobodan Exp $
23  */
24
25 package com.lutris.appserver.server.sessionEnhydra.persistent;
26
27 import java.sql.PreparedStatement JavaDoc;
28 import java.sql.ResultSet JavaDoc;
29 import java.sql.SQLException JavaDoc;
30 import java.util.Vector JavaDoc;
31
32 import com.lutris.appserver.server.sql.DBConnection;
33 import com.lutris.appserver.server.sql.Query;
34
35 /**
36  * Returns an enumeration of all the session keys.
37  *
38  * @version $Revision: 1.2 $
39  * @author Kyle Clark
40  */
41 class KeysQuery implements Query {
42
43     private String JavaDoc sessionKey;
44
45     KeysQuery() {
46     }
47
48     /**
49      * Method to query objects from the database.
50      *
51      * @param conn Handle to database connection.
52      * @exception java.sql.SQLException If a database access error occurs.
53      */
54     public ResultSet JavaDoc executeQuery(DBConnection conn)
55         throws SQLException JavaDoc {
56         String JavaDoc sql = "select sessionKey from " + PersistentSessionHome.dbTableName;
57         PreparedStatement JavaDoc stmt = conn.prepareStatement(sql);
58         return conn.executeQuery(stmt, sql);
59     }
60
61     /**
62      * Method to get next object from query results.
63      *
64      * @param rs
65      * result set from which the session key will be instantiated.
66      * @exception java.sql.SQLException
67      * if a database access error occurs.
68      */
69     public Object JavaDoc next(ResultSet JavaDoc rs) throws SQLException JavaDoc {
70         Vector JavaDoc v = new Vector JavaDoc();
71         while (rs.next()) {
72             v.addElement(rs.getString("sessionKey"));
73         }
74         return v.elements();
75     }
76
77 }
78
Popular Tags