1 /* Copyright (c) 2001-2014, The HSQL Development Group
2  * All rights reserved.
3  *
4  * Redistribution and use in source and binary forms, with or without
5  * modification, are permitted provided that the following conditions are met:
6  *
7  * Redistributions of source code must retain the above copyright notice, this
8  * list of conditions and the following disclaimer.
9  *
10  * Redistributions in binary form must reproduce the above copyright notice,
11  * this list of conditions and the following disclaimer in the documentation
12  * and/or other materials provided with the distribution.
13  *
14  * Neither the name of the HSQL Development Group nor the names of its
15  * contributors may be used to endorse or promote products derived from this
16  * software without specific prior written permission.
17  *
18  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
19  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
20  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
21  * ARE DISCLAIMED. IN NO EVENT SHALL HSQL DEVELOPMENT GROUP, HSQLDB.ORG,
22  * OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
23  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
24  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
25  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
26  * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
27  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
28  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29  */
30 
31 
32 package org.hsqldb;
33 
34 /**
35  * Represents a single insert / delete / rollback / commit action on a row.
36  *
37  * type = type of action
38  * actionTimestamp = timestamp of end of SQL action; 0 if action not complete
39  * commitTimestamp = timestamp of commit or rollback; 0 if not committed/rolledback
40  * rolledBack = flag for rolled back actions
41  * next = next action in linked list;
42  *
43  * timestamps are not in any order
44  *
45  * @author Fred Toussi (fredt@users dot sourceforge dot net)
46  * @version 2.3.2
47 
48  * @since 2.0.0
49  */
50 public class RowActionBase {
51 
52     public static final byte ACTION_NONE          = 0;
53     public static final byte ACTION_INSERT        = 1;
54     public static final byte ACTION_DELETE        = 2;
55     public static final byte ACTION_DELETE_FINAL  = 3;
56     public static final byte ACTION_INSERT_DELETE = 4;
57     public static final byte ACTION_REF           = 5;
58     public static final byte ACTION_CHECK         = 6;
59     public static final byte ACTION_DEBUG         = 7;
60 
61     //
62     RowActionBase            next;
63     Session                  session;
64     long                     actionTimestamp;
65     long                     commitTimestamp;
66     byte                     type;
67     boolean                  deleteComplete;
68     boolean                  rolledback;
69     boolean                  prepared;
70     int[]                    changeColumnMap;
71 
RowActionBase()72     RowActionBase() {}
73 
74     /**
75      * constructor, used for delete actions only
76      */
RowActionBase(Session session, byte type)77     RowActionBase(Session session, byte type) {
78 
79         this.session    = session;
80         this.type       = type;
81         actionTimestamp = session.actionTimestamp;
82     }
83 
setAsAction(RowActionBase action)84     void setAsAction(RowActionBase action) {
85 
86         next            = action.next;
87         session         = action.session;
88         actionTimestamp = action.actionTimestamp;
89         commitTimestamp = action.commitTimestamp;
90         type            = action.type;
91         deleteComplete  = action.deleteComplete;
92         rolledback      = action.rolledback;
93         prepared        = action.prepared;
94         changeColumnMap = action.changeColumnMap;
95     }
96 }
97