-
Notifications
You must be signed in to change notification settings - Fork 2.3k
/
EmptyVersionContext.java
66 lines (58 loc) · 1.6 KB
/
EmptyVersionContext.java
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
/*
* Copyright (c) 2002-2018 "Neo Technology,"
* Network Engine for Objects in Lund AB [http://neotechnology.com]
*
* This file is part of Neo4j.
*
* Neo4j is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package org.neo4j.io.pagecache.tracing.cursor.context;
/**
* {@link VersionContext} that does not perform any kind of version tracking for cases when its not required.
* @see VersionContext
*/
public class EmptyVersionContext implements VersionContext
{
public static final VersionContext EMPTY = new EmptyVersionContext();
private EmptyVersionContext()
{
}
@Override
public void initRead()
{
}
@Override
public void initWrite( long committingTransactionId )
{
}
@Override
public long committingTransactionId()
{
return 0;
}
@Override
public long lastClosedTransactionId()
{
return Long.MAX_VALUE;
}
@Override
public void markAsDirty()
{
}
@Override
public boolean isDirty()
{
return false;
}
}