Classes in this File | Line Coverage | Branch Coverage | Complexity | ||||
StateOldClean |
|
| 1.0;1 |
1 | package org.apache.ojb.odmg.states; | |
2 | ||
3 | /* Copyright 2002-2005 The Apache Software Foundation | |
4 | * | |
5 | * Licensed under the Apache License, Version 2.0 (the "License"); | |
6 | * you may not use this file except in compliance with the License. | |
7 | * You may obtain a copy of the License at | |
8 | * | |
9 | * http://www.apache.org/licenses/LICENSE-2.0 | |
10 | * | |
11 | * Unless required by applicable law or agreed to in writing, software | |
12 | * distributed under the License is distributed on an "AS IS" BASIS, | |
13 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | |
14 | * See the License for the specific language governing permissions and | |
15 | * limitations under the License. | |
16 | */ | |
17 | ||
18 | import org.apache.ojb.odmg.ObjectEnvelope; | |
19 | ||
20 | /** | |
21 | * this state represents old Objects (i.e. already persistent but not changed during tx) | |
22 | * --> no need to do anything for commit or rollback | |
23 | */ | |
24 | public class StateOldClean extends ModificationState | |
25 | { | |
26 | private static StateOldClean _instance = new StateOldClean(); | |
27 | ||
28 | /** | |
29 | * private constructor: use singleton instance | |
30 | */ | |
31 | private StateOldClean() | |
32 | { | |
33 | ||
34 | } | |
35 | ||
36 | /** | |
37 | * perform a checkpoint, i.e. perform updates on underlying db but keep locks on objects | |
38 | */ | |
39 | public static StateOldClean getInstance() | |
40 | { | |
41 | return _instance; | |
42 | } | |
43 | ||
44 | /** | |
45 | * return resulting state after marking clean | |
46 | */ | |
47 | public ModificationState markClean() | |
48 | { | |
49 | return this; | |
50 | } | |
51 | ||
52 | /** | |
53 | * return resulting state after marking delete | |
54 | */ | |
55 | public ModificationState markDelete() | |
56 | { | |
57 | return StateOldDelete.getInstance(); | |
58 | } | |
59 | ||
60 | /** | |
61 | * return resulting state after marking dirty | |
62 | */ | |
63 | public ModificationState markDirty() | |
64 | { | |
65 | return StateOldDirty.getInstance(); | |
66 | } | |
67 | ||
68 | /** | |
69 | * return resulting state after marking new | |
70 | */ | |
71 | public ModificationState markNew() | |
72 | { | |
73 | return this; | |
74 | } | |
75 | ||
76 | /** | |
77 | * return resulting state after marking old | |
78 | */ | |
79 | public ModificationState markOld() | |
80 | { | |
81 | return this; | |
82 | } | |
83 | ||
84 | /** | |
85 | * rollback the ObjectModification | |
86 | */ | |
87 | public void checkpoint(ObjectEnvelope mod) | |
88 | { | |
89 | ||
90 | } | |
91 | ||
92 | /** | |
93 | * commit the associated transaction | |
94 | */ | |
95 | public void commit(ObjectEnvelope mod) | |
96 | { | |
97 | ||
98 | } | |
99 | ||
100 | /** | |
101 | * | |
102 | */ | |
103 | public void rollback(ObjectEnvelope mod) | |
104 | { | |
105 | ||
106 | } | |
107 | } |