01: package org.apache.ojb.otm.states;
02:
03: /* Copyright 2003-2005 The Apache Software Foundation
04: *
05: * Licensed under the Apache License, Version 2.0 (the "License");
06: * you may not use this file except in compliance with the License.
07: * You may obtain a copy of the License at
08: *
09: * 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 old Objects (i.e. already persistent but not changed during tx)
20: * --> no need to do anything for commit or rollback (ODMG StateOldClean).
21: */
22: public class PersistentClean extends State {
23:
24: PersistentClean() {
25: }
26:
27: /**
28: * return a String representation
29: */
30: public String toString() {
31: return "Persistent-clean";
32: }
33:
34: //-------------- State transitions --------------------
35:
36: /**
37: * Describes the state transition when user modifies object
38: */
39: public State markDirty() throws IllegalObjectStateException {
40: return State.PERSISTENT_DIRTY;
41: }
42:
43: /**
44: * Describes the state transition on deletePersistent()
45: */
46: public State deletePersistent() throws IllegalObjectStateException {
47: return State.PERSISTENT_DELETED;
48: }
49:
50: /**
51: * Describes the state transition on commit()
52: */
53: public State commit() throws IllegalObjectStateException {
54: return State.HOLLOW;
55: }
56:
57: /**
58: * Describes the state transition on rollback()
59: */
60: public State rollback() throws IllegalObjectStateException {
61: return State.HOLLOW;
62: }
63:
64: //-------------- State semantics --------------------
65:
66: }
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