Mercurial > dive4elements > river

annotate flys-client/src/main/java/de/intevation/flys/client/server/LoadArtifactServiceImpl.java @ 4278:efc731efa4a3

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Documentation added.
author Felix Wolfsteller <felix.wolfsteller@intevation.de>
date Fri, 26 Oct 2012 16:42:51 +0200
parents 51ed89b754ae
children
rev   line source
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1 package de.intevation.flys.client.server;
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2
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3 import java.util.ArrayList;
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4 import java.util.HashMap;
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5
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6 import org.apache.log4j.Logger;
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7
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8 import de.intevation.flys.client.shared.exceptions.ServerException;
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9 import de.intevation.flys.client.shared.model.Artifact;
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10 import de.intevation.flys.client.shared.model.Collection;
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11 import de.intevation.flys.client.shared.model.Recommendation;
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12
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13 import de.intevation.flys.client.client.services.LoadArtifactService;
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14
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15 /**
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16 * This service creates a new Artifact based on a given Recommendation and puts
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17 * this new artifact into a specified Collection.
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18 *
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19 * @author <a href="mailto:ingo.weinzierl@intevation.de">Ingo Weinzierl</a>
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20 */
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21 public class LoadArtifactServiceImpl
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22 extends ArtifactServiceImpl
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23 implements LoadArtifactService
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24 {
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25 private static final Logger logger =
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26 Logger.getLogger(LoadArtifactServiceImpl.class);
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27
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28 /** Error. */
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29 public static final String ERROR_LOAD_ARTIFACT = "error_load_artifact";
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30
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31
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32 /**
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33 * Clones or creates a single artifact and adds it to a collection.
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34 *
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35 * Note that in contrast to loadMany, always the given factory is used
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36 * to clone the artifact.
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37 *
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38 * @param parent collection to add recommendation to.
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39 * @param recom recommendation to create clone for.
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40 * @param factory factory to use.
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41 * @param locale the locale to translate messages.
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42 */
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43 public Artifact load(
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44 Collection parent,
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45 Recommendation recom,
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46 String factory,
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47 String locale
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48 )
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49 throws ServerException {
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50 logger.info(
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51 "LoadArtifactServiceImpl.load: " + recom.getMasterArtifact());
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52
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53 String url = getServletContext().getInitParameter("server-url");
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54
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55 // 1) Clone the Artifact specified in >>recom<<
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56 Artifact clone = ArtifactHelper.createArtifact(
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57 url, locale, factory, recom);
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58
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59 if (clone != null) {
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60 logger.debug("Successfully create Artifact Clone. Add now!");
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61 Collection c = CollectionHelper.addArtifact(
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62 parent, clone, url, locale);
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63
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64 if (c != null) {
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65 logger.debug("Successfully added Clone to Collection.");
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66
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67 return clone;
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68 }
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69 }
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70
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71 throw new ServerException(ERROR_LOAD_ARTIFACT);
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72 }
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73
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74
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75 /**
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76 * Clone/create one or more artifacts and add it to a collection, avoiding
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77 * duplicates.
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78 *
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79 * @param parent Collection where clones will be added to.
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80 * @param recoms definitions of source of clone.
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81 * @param factory name of factory to use when cloning artifacts (can be
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82 * null in which case the recommendations getFactory() will
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83 * be used.
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84 * @param locale the locale to translate messages.
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85 *
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86 * @return cloned artifacts (same artifact might be contained multiple
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87 * times).
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88 */
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89 public Artifact[] loadMany(
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90 Collection parent,
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91 Recommendation[] recoms,
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92 String factory,
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93 String locale
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94 )
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95 throws ServerException {
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96 logger.debug("LoadArtifactServiceImpl.loadMany");
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97
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98 String url = getServletContext().getInitParameter("server-url");
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99
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100 ArrayList<Artifact> artifacts = new ArrayList<Artifact>();
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101 HashMap<Recommendation, Artifact> cloneMap =
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102 new HashMap<Recommendation, Artifact>();
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103
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104 // TODO Respect the index of what to clone.
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105
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106 // 1) Clone the Artifacts specified in >>recoms<<
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107 for (Recommendation recom : recoms) {
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108 // Do not do two clones of two identical recommendations.
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109 Artifact prevClone = cloneMap.get(recom);
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110 if (prevClone != null) {
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111 // Already cloned a recommendation like this.
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112 logger.debug("LoadArtifactServiceImpl: Avoid reclones, "
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113 + "clone already exists.");
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114 artifacts.add(prevClone);
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115 }
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116 else {
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117 // Not already cloned.
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118 String realFactory = factory != null
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119 ? factory
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120 : recom.getFactory();
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121
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122 logger.debug("One will be cloned with : " + realFactory);
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123
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124 Artifact clone = ArtifactHelper.createArtifact(
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125 url, locale, realFactory, recom);
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126
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127 if (clone != null) {
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128 logger.debug("LoadArtifactServiceImple: Successfully "
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129 + "loaded Artifact Clone.");
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130 Collection c = CollectionHelper.addArtifact(
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131 parent, clone, url, locale);
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132
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133 if (c != null) {
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134 artifacts.add(clone);
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135 // Remember we cloned a recommendation like this.
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136 cloneMap.put(recom, clone);
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137 }
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138 else {
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139 throw new ServerException(ERROR_LOAD_ARTIFACT);
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140 }
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141 }
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142 }
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143 }
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144 return artifacts.toArray(new Artifact[artifacts.size()]);
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145 }
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146 }
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147 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
http://dive4elements.wald.intevation.org