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Java > Open Source Codes > com > triactive > jdo > state > PersistentClean


1 /*
2  * Copyright 2004 (C) TJDO.
3  * All rights reserved.
4  *
5  * This software is distributed under the terms of the TJDO License version 1.0.
6  * See the terms of the TJDO License in the documentation provided with this software.
7  *
8  * $Id: PersistentClean.java,v 1.6 2004/01/18 03:01:06 jackknifebarber Exp $
9  */
10
11 package com.triactive.jdo.state;
12
13 import javax.jdo.Transaction;
14
15
16 class PersistentClean extends LifeCycleState
17 {
18     protected PersistentClean()
19     {
20         isPersistent = true;
21         isTransactional = true;
22         isDirty = false;
23         isNew = false;
24         isDeleted = false;
25
26         stateType = P_CLEAN;
27     }
28
29     public LifeCycleState transitionDeletePersistent(StateManagerImpl sm, Transaction tx)
30     {
31         sm.preDelete();
32         return changeState(sm, P_DELETED);
33     }
34
35     public LifeCycleState transitionMakeNontransactional(StateManagerImpl sm)
36     {
37         sm.evictFromTransaction();
38         return changeState(sm, P_NONTRANS);
39     }
40
41     public LifeCycleState transitionMakeTransient(StateManagerImpl sm)
42     {
43         sm.evictFromTransaction();
44         sm.disconnect();
45         return changeState(sm, TRANSIENT);
46     }
47
48     public LifeCycleState transitionCommit(StateManagerImpl sm, Transaction tx)
49     {
50         if (tx.getRetainValues())
51         {
52             sm.evictFromTransaction();
53             return changeState(sm, P_NONTRANS);
54         }
55         else
56         {
57             sm.clearPersistentFields();
58             sm.evictFromTransaction();
59             return changeState(sm, HOLLOW);
60         }
61     }
62
63     public LifeCycleState transitionRollback(StateManagerImpl sm, Transaction tx)
64     {
65         if (tx.getRestoreValues())
66         {
67             sm.evictFromTransaction();
68             return changeState(sm, P_NONTRANS);
69         }
70         else
71         {
72             sm.clearPersistentFields();
73             sm.evictFromTransaction();
74             return changeState(sm, HOLLOW);
75         }
76     }
77
78     public LifeCycleState transitionEvict(StateManagerImpl sm)
79     {
80         sm.clearPersistentFields();
81         sm.evictFromTransaction();
82         return changeState(sm, HOLLOW);
83     }
84
85     public LifeCycleState transitionWriteField(StateManagerImpl sm, Transaction tx)
86     {
87         if (tx.getRestoreValues())
88             sm.saveFields();
89
90         return changeState(sm, P_DIRTY);
91     }
92
93     public String JavaDoc toString()
94     {
95         return "P_CLEAN";
96     }
97 }
98
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