Mercurial > hg > blitz_stable

annotate src/org/prevayler/Prevayler.java @ 27:511648fa4d64 Version 2.1

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Version to 2.1
author Dan Creswell <dan.creswell@gmail.com>
date Mon, 04 Jan 2010 13:00:40 +0000
parents 3dc0c5604566
children
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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 }