1 package org.apache.ojb.otm.states;
2
3 /* Copyright 2003-2005 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 /**
19 * this state represents persistent objects outside of transaction
20 * (no ODMG equivalent).
21 */
22 public class Hollow extends State
23 {
24
25 Hollow()
26 {
27 }
28
29 /**
30 * return a String representation
31 */
32 public String toString()
33 {
34 return "Hollow";
35 }
36
37 //-------------- State transitions --------------------
38
39 /**
40 * Describes the state transition when object is gotten from the cache
41 * or is loaded from database (once per transaction).
42 */
43 public State getObject()
44 throws IllegalObjectStateException
45 {
46 return State.PERSISTENT_CLEAN;
47 }
48
49 /**
50 * Describes the state transition when user modifies object
51 */
52 public State markDirty()
53 throws IllegalObjectStateException
54 {
55 return State.PERSISTENT_DIRTY;
56 }
57
58 /**
59 * Describes the state transition on deletePersistent()
60 */
61 public State deletePersistent()
62 throws IllegalObjectStateException
63 {
64 return State.PERSISTENT_DELETED;
65 }
66
67 public State rollback()
68 throws IllegalObjectStateException
69 {
70 return this;
71 }
72 }