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annotate artifact-database/src/main/java/de/intevation/artifactdatabase/ProxyArtifact.java @ 81:e9c80fdfee13

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Set new identifiers on artifacts after an artifact import. artifacts/trunk@809 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author Ingo Weinzierl <ingo.weinzierl@intevation.de>
date Fri, 19 Mar 2010 14:57:23 +0000
parents 48d1a9a082c2
children efe752c4f8b2
rev   line source
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1 package de.intevation.artifactdatabase;
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2
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3 import org.w3c.dom.Document;
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4
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5 import de.intevation.artifacts.Artifact;
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6 import de.intevation.artifacts.CallContext;
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7
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8 import org.apache.log4j.Logger;
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9
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10 import java.io.IOException;
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11 import java.io.OutputStream;
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12
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13 /**
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14 * @author <a href="mailto:sascha.teichmann@intevation.de">Sascha L. Teichmann</a>
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15 */
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16 public class ProxyArtifact
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17 extends DefaultArtifact
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18 {
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19 public static final Object REPLACE_PROXY = new Object();
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20
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21 private static Logger logger = Logger.getLogger(ProxyArtifact.class);
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22
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23 protected Artifact proxied;
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24
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25 public ProxyArtifact() {
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26 }
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28 public ProxyArtifact(Artifact proxied) {
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29 this.proxied = proxied;
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30 }
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31
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32 public Artifact getProxied() {
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33 return proxied;
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34 }
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35
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36 public void setProxied(Artifact proxied) {
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37 this.proxied = proxied;
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38 }
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39
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40 public void setIdentifier(String identifier) {
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41 this.identifier = identifier;
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42
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43 if (proxied != null)
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44 proxied.setIdentifier(identifier);
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45 }
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46
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47 protected void checkReplacement(CallContext callContext) {
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48 Object replacement = callContext.getContextValue(REPLACE_PROXY);
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49 if (replacement instanceof Artifact) {
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50 setProxied((Artifact)replacement);
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51 }
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52 }
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53
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54 public String hash() {
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55 return proxied != null
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56 ? proxied.hash()
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57 : super.hash();
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58 }
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59
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60 public Document describe(Document data, CallContext context) {
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61 try {
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62 return proxied != null
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63 ? proxied.describe(data, context)
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64 : super.describe(data, context);
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65 }
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66 finally {
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67 checkReplacement(context);
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68 }
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69 }
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71 public Document advance(Document target, CallContext context) {
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72 try {
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73 return proxied != null
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74 ? proxied.advance(target, context)
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75 : super.advance(target, context);
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76 }
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77 finally {
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78 checkReplacement(context);
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79 }
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80 }
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81
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82 public Document feed(Document target, CallContext context) {
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83 try {
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84 return proxied != null
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85 ? proxied.feed(target, context)
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86 : super.feed(target, context);
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87 }
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88 finally {
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89 checkReplacement(context);
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90 }
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91 }
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92
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93 public void out(
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94 Document format,
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95 OutputStream out,
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96 CallContext context
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97 )
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98 throws IOException
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99 {
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100 try {
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101 if (proxied != null) {
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102 proxied.out(format, out, context);
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103 }
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104 else {
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105 super.out(format, out, context);
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106 }
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107 }
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108 finally {
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109 checkReplacement(context);
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110 }
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111 }
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112
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113 public void endOfLife(Object context) {
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114 if (proxied != null) {
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115 proxied.endOfLife(context);
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116 }
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117 else {
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118 super.endOfLife(context);
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119 }
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120 }
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121 }
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122 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8:
http://dive4elements.wald.intevation.org