Mercurial > dive4elements > framework
annotate artifact-database/src/main/java/de/intevation/artifactdatabase/ArtifactCallContext.java @ 363:4d3298295a64
Enhanced the State interface with a new method initialize() which might be used to initialize the State based on a model Artifact.
artifacts/trunk@3623 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author | Ingo Weinzierl <ingo.weinzierl@intevation.de> |
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date | Mon, 09 Jan 2012 08:15:35 +0000 |
parents | 089c6f7794b5 |
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1 /* |
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2 * Copyright (c) 2010, 2011 by Intevation GmbH |
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3 * |
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4 * This program is free software under the LGPL (>=v2.1) |
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5 * Read the file LGPL.txt coming with the software for details |
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6 * or visit http://www.gnu.org/licenses/ if it does not exist. |
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7 */ |
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8 package de.intevation.artifactdatabase; |
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9 |
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10 import java.util.LinkedList; |
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12 import org.apache.log4j.Logger; |
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13 |
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14 import de.intevation.artifacts.CallMeta; |
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15 import de.intevation.artifacts.Message; |
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16 |
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17 import de.intevation.artifactdatabase.Backend.PersistentArtifact; |
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18 |
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19 |
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20 /** |
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21 * Class that implements the call context handed to the methods calls |
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22 * describe(), feed(), etc. of the artifact. |
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23 * |
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24 * @author <a href="mailto:sascha.teichmann@intevation.de">Sascha L. Teichmann</a> |
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25 */ |
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26 public class ArtifactCallContext extends AbstractCallContext { |
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27 |
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28 private static Logger logger = Logger.getLogger(ArtifactCallContext.class); |
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29 |
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30 |
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31 /** |
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32 * Error message issued if an artifact wants to translate itself |
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33 * into a none valid persistent state. |
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34 */ |
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35 public static final String INVALID_CALL_STATE = "Invalid after call state"; |
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36 |
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37 /** |
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38 * Error message issued if one tries to remove a requested artifact |
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39 * from the list of artifacts running in background which is |
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40 * not in this list. |
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41 */ |
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42 public static final String NOT_IN_BACKGROUND = "Not in background"; |
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43 |
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44 |
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45 /** |
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46 * The persistence wrapper around the living artifact |
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47 */ |
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48 protected PersistentArtifact artifact; |
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49 |
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50 |
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51 public ArtifactCallContext( |
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52 ArtifactDatabaseImpl artifactDatabase, |
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53 int action, |
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54 CallMeta callMeta, |
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55 PersistentArtifact artifact) |
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56 { |
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57 super(artifactDatabase, action, callMeta); |
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58 |
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59 this.artifact = artifact; |
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60 } |
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61 |
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62 |
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63 public void afterCall(int action) { |
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64 this.action = action; |
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65 if (action == BACKGROUND) { |
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66 database.addIdToBackground(artifact.getId()); |
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67 } |
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68 } |
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69 |
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70 |
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71 public void afterBackground(int action) { |
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72 if (this.action != BACKGROUND) { |
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73 throw new IllegalStateException(NOT_IN_BACKGROUND); |
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74 } |
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75 database.fromBackground(artifact, action); |
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76 } |
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77 |
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78 |
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79 public boolean isInBackground() { |
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80 return database.getLockedIds().contains(artifact.getId()); |
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81 } |
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82 |
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83 |
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84 public void addBackgroundMessage(Message msg) { |
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85 database.addBackgroundMessage(artifact.getArtifact().identifier(), msg); |
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86 } |
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87 |
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88 |
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89 public LinkedList<Message> getBackgroundMessages() { |
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90 return database.getBackgroundMessages( |
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91 artifact.getArtifact().identifier()); |
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92 } |
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93 |
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94 |
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95 public Long getTimeToLive() { |
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96 return artifact.getTTL(); |
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97 } |
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98 |
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99 |
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100 /** |
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101 * Dispatches and executes the persistence action after |
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102 * the return of the concrete artifact call. |
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103 */ |
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104 public void postCall() { |
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105 try { |
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106 switch (action) { |
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107 case NOTHING: |
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108 break; |
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109 case TOUCH: |
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110 artifact.touch(); |
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111 break; |
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112 case STORE: |
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113 artifact.store(); |
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114 break; |
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115 case BACKGROUND: |
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116 logger.warn( |
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117 "BACKGROUND processing is not fully implemented, yet!"); |
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118 artifact.store(); |
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119 break; |
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120 default: |
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121 logger.error(INVALID_CALL_STATE + ": " + action); |
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122 throw new IllegalStateException(INVALID_CALL_STATE); |
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123 } |
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124 } |
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125 finally { |
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126 super.postCall(); |
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127 } |
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128 } |
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129 } |
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130 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 : |