Mercurial > hg > blitz_condensed
comparison src/org/prevayler/PrevalentSystem.java @ 0:3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
author | Dan Creswell <dan.creswell@gmail.com> |
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date | Sat, 21 Mar 2009 11:00:06 +0000 |
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1 /* | |
2 The copyright of all source code included in this Prevayler distribution is | |
3 held by Klaus Wuestefeld, except the files that specifically state otherwise. | |
4 All rights are reserved. "PREVAYLER" is a trademark of Klaus Wuestefeld. | |
5 | |
6 | |
7 BSD License: | |
8 | |
9 Redistribution and use in source and binary forms, with or without | |
10 modification, are permitted provided that the following conditions are met: | |
11 | |
12 - Redistributions of source code must retain the above copyright notice, this | |
13 list of conditions and the following disclaimer. | |
14 | |
15 - Redistributions in binary form must reproduce the above copyright notice, | |
16 this list of conditions and the following disclaimer in the documentation | |
17 and/or other materials provided with the distribution. | |
18 | |
19 - Neither the name of Prevayler nor the names of its contributors may be used | |
20 to endorse or promote products derived from this software without specific | |
21 prior written permission. | |
22 | |
23 | |
24 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" | |
25 AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
26 IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
27 ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE | |
28 LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR | |
29 CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF | |
30 SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS | |
31 INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN | |
32 CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) | |
33 ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE | |
34 POSSIBILITY OF SUCH DAMAGE. | |
35 */ | |
36 | |
37 package org.prevayler; | |
38 | |
39 import java.io.Serializable; | |
40 | |
41 | |
42 /** | |
43 * A system that implements this interface can be made transparently persistent with Prevayler. All business objects in this system must be deterministic. i.e.: Any two PrevalentSystems of the same class must produce the same results given the same commands. | |
44 * @see org.prevayler.Prevayler | |
45 */ | |
46 public interface PrevalentSystem extends Serializable { | |
47 | |
48 /** | |
49 * Sets the clock to be used by this system for ALL its date/time related functions. This method is called only once by Prevayler during the first system initialization. | |
50 */ | |
51 public void clock(AlarmClock clock); | |
52 | |
53 /** | |
54 * Returns the clock used by this system for ALL its date/time related functions. | |
55 */ | |
56 public AlarmClock clock(); | |
57 | |
58 public void add(SnapshotContributor aContributor); | |
59 | |
60 /** | |
61 This method would typically be used, for example, when something is | |
62 about to be deleted or freed (perhaps as part of delete all Entry's) | |
63 and thus doesn't wish to provide contributions any longer | |
64 */ | |
65 public void remove(SnapshotContributor aContributor); | |
66 | |
67 public Serializable[] getSnapshotContributions(); | |
68 } |