Mercurial > hg > blitz_stable
annotate src/org/prevayler/Prevayler.java @ 32:243c74d599bf
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author | Dan Creswell <dan.creswell@gmail.com> |
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date | Sat, 12 Jun 2010 10:41:47 +0100 |
parents | 3dc0c5604566 |
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1 /* |
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2 The copyright of all source code included in this Prevayler distribution is |
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3 held by Klaus Wuestefeld, except the files that specifically state otherwise. |
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4 All rights are reserved. "PREVAYLER" is a trademark of Klaus Wuestefeld. |
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5 |
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6 |
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7 BSD License: |
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8 |
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9 Redistribution and use in source and binary forms, with or without |
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10 modification, are permitted provided that the following conditions are met: |
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11 |
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12 - Redistributions of source code must retain the above copyright notice, this |
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13 list of conditions and the following disclaimer. |
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14 |
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15 - Redistributions in binary form must reproduce the above copyright notice, |
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16 this list of conditions and the following disclaimer in the documentation |
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17 and/or other materials provided with the distribution. |
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18 |
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19 - Neither the name of Prevayler nor the names of its contributors may be used |
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20 to endorse or promote products derived from this software without specific |
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21 prior written permission. |
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22 |
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23 |
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24 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
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25 AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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26 IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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27 ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE |
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28 LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
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29 CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
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30 SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
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31 INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
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32 CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
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33 ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
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34 POSSIBILITY OF SUCH DAMAGE. |
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35 */ |
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36 |
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37 package org.prevayler; |
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38 |
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39 import java.io.Serializable; |
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40 |
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41 |
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42 /** |
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43 Provides transparent persistence for all business objects in a |
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44 PrevalentSystem. All commands to the system must be represented as objects |
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45 implementing the Command interface and must be executed using |
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46 Prevayler.executeCommand(Command). |
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47 */ |
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48 public interface Prevayler { |
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49 |
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50 /** |
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51 * Returns the underlying PrevalentSystem. |
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52 */ |
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53 public PrevalentSystem system(); |
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54 |
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55 |
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56 /** |
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57 Logs the received command for crash or shutdown recovery and executes it |
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58 on the underlying PrevalentSystem. |
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59 |
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60 @return The serializable object that was returned by the execution of command. |
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61 @throws IOException if there is trouble writing the command to one of the |
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62 log files. |
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63 @throws Exception if the execution of command throws an Exception. |
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64 */ |
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65 public Serializable executeCommand(Command command) throws Exception; |
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66 |
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67 /** |
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68 @param sync if <code>true</code>indicates that the log should be forced |
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69 after this command has been written otherwise the don't force. |
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70 */ |
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71 public Serializable executeCommand(Command aCommand, boolean sync) throws Exception; |
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72 } |