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Java > Open Source Codes > org > apache > ojb > otm > states > Hollow


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 JavaDoc 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 }
73
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