Query


1   /*
2    * Enhydra Java Application Server Project
3    * 
4    * The contents of this file are subject to the Enhydra Public License
5    * Version 1.1 (the "License"); you may not use this file except in
6    * compliance with the License. You may obtain a copy of the License on
7    * the Enhydra web site ( http://www.enhydra.org/ ).
8    * 
9    * Software distributed under the License is distributed on an "AS IS"
10   * basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See 
11   * the License for the specific terms governing rights and limitations
12   * under the License.
13   * 
14   * The Initial Developer of the Enhydra Application Server is Lutris
15   * Technologies, Inc. The Enhydra Application Server and portions created
16   * by Lutris Technologies, Inc. are Copyright Lutris Technologies, Inc.
17   * All Rights Reserved.
18   * 
19   * Contributor(s):
20   * 
21   * $Id: Query.java,v 1.1 2004/09/03 13:42:37 sinisa Exp $
22   */
23  package com.lutris.appserver.server.sql;
24  
25  import java.sql.ResultSet  ;
26  import java.sql.SQLException  ;
27  
28  /**
29   * Interface that must be implemented by objects accessed by DBQuery.
30   *
31   * @author  Kyle Clark
32   * @version $Revision: 1.1 $
33   * @see     DBQuery
34   */
35  public interface Query {
36  
37      /**
38       * Method to query objects from the database.
39       *
40       * @param conn Handle to database connection.
41       * @exception java.sql.SQLException If a database access error occurs. 
42       */
43      public ResultSet   executeQuery(DBConnection conn)
44          throws SQLException  ;
45  
46      /**
47       * Method to get next object from query results.
48       *
49       * @param rs JDBC result set from which the next object
50       *   will be instantiated.
51       * @exception java.sql.SQLException If a database access error occurs. 
52       * @exception ObjectIdException If ObjectId was not found.
53       */
54      public Object   next(ResultSet   rs)
55          throws SQLException  , ObjectIdException;
56  }
57
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