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Java > Open Source Codes > org > xquark > mapper > storage > ExtraDataExplorer


1 /*
2  * This file belongs to the XQuark distribution.
3  * Copyright (C) 2003 Universite de Versailles Saint-Quentin.
4  *
5  * This program is free software; you can redistribute it and/or
6  * modify it under the terms of the GNU Lesser General Public
7  * License as published by the Free Software Foundation; either
8  * version 2.1 of the License, or (at your option) any later version.
9  *
10  * This program is distributed in the hope that it will be useful,
11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13  * Lesser General Public License for more details.
14  *
15  * You should have received a copy of the GNU Lesser General Public
16  * License along with this program; if not, write to the Free Software
17  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307.
18  * You can also get it at http://www.gnu.org/licenses/lgpl.html
19  *
20  * For more information on this software, see http://www.xquark.org.
21  */
22
23 package org.xquark.mapper.storage;
24
25 import java.sql.SQLException JavaDoc;
26
27 import org.xquark.mapper.dbms.TableInfo;
28
29 /**
30  * Object used to perform XML structure node storage.
31  *
32  */
33 public abstract class ExtraDataExplorer extends ExtraDataPersistentNode
34 {
35     private static final String JavaDoc RCSRevision = "$Revision: 1.1 $";
36     private static final String JavaDoc RCSName = "$Name: $";
37     
38     protected boolean notExhausted = false;
39     
40     protected boolean useStringDelimitor = false;
41     
42     public ExtraDataExplorer(TableInfo tableInfo)
43     {
44         super(tableInfo);
45     }
46     /**
47      * get the next row from database and store it in the current object.
48      */
49     public abstract boolean fetchNextRow() throws SQLException JavaDoc;
50     boolean queryPending()
51     {
52         return notExhausted;
53     }
54     
55     /** To be overridden */
56     boolean resultActive()
57     {
58         return notExhausted;
59     }
60     
61     public void reset() throws SQLException JavaDoc
62     {
63         super.reset();
64         notExhausted = false;
65     }
66 }
67
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