annotate artifact-database/src/main/java/de/intevation/artifactdatabase/ArtifactCallContext.java @ 460:3c1177c58312 2.9.13

Add tag 2.9.12 for changeset fdb479d4a759
author Andre Heinecke <aheinecke@intevation.de>
date Mon, 11 Mar 2013 17:25:13 +0100
parents 089c6f7794b5
children
rev   line source
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cabe4c02ab64 Refactored the CallContextImpl - there are two concrete classes for Artifacts and ArtifactCollections now.
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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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11
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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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17 import de.intevation.artifactdatabase.Backend.PersistentArtifact;
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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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28 private static Logger logger = Logger.getLogger(ArtifactCallContext.class);
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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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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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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();
219
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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 :

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