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annotate artifact-database/src/main/java/de/intevation/artifactdatabase/DefaultArtifactCollection.java @ 123:9187abefba8b

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Added a default implementation of a UserFactory and a new constructor to create new DefaultUsers. artifacts/trunk@1346 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author Ingo Weinzierl <ingo.weinzierl@intevation.de>
date Tue, 01 Mar 2011 17:14:10 +0000
parents 3bb121d5b0b7
children db0d20440b92
rev   line source
119
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1 /*
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2 * Copyright (c) 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.io.IOException;
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11 import java.io.OutputStream;
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12 import java.util.ArrayList;
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13 import java.util.Date;
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14 import java.util.HashMap;
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15 import java.util.List;
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16 import java.util.Map;
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17
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18 import org.apache.log4j.Logger;
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19
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20 import org.w3c.dom.Document;
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21
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22 import de.intevation.artifacts.Artifact;
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23 import de.intevation.artifacts.ArtifactCollection;
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24 import de.intevation.artifacts.ArtifactCollectionFactory;
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25 import de.intevation.artifacts.CallContext;
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26 import de.intevation.artifacts.User;
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27
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28
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29 /**
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30 * Trivial implementation of an artifact collection. Useful to be subclassed.
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31 * @author <a href="mailto:ingo.weinzierl@intevation.de">Ingo Weinzierl</a>
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32 */
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33 public class DefaultArtifactCollection
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34 implements ArtifactCollection
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35 {
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36 /** The logger used in this class.*/
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37 private static Logger logger =
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38 Logger.getLogger(DefaultArtifactCollection.class);
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39
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40 /**
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41 * The identifier of the collection.
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42 */
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43 protected String identifier;
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44
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45 /**
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46 * The owner of this collection.
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47 */
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48 protected User user;
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49
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50 /**
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51 * The artifacts stored in this collection.
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52 */
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53 protected List<Artifact> artifacts;
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54
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55 /**
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56 * The attributes used for the artifacts stored in this collection. The key
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57 * of this map represents the identifier of the artifact which the attribute
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58 * belong to.
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59 */
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60 protected Map<String, Document> attributes;
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61
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62 /** The creation time of this collection.*/
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63 protected Date creationTime;
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64
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65
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66 /**
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67 * Default constructor.
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68 */
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69 public DefaultArtifactCollection() {
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70 }
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71
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72
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73 /**
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74 * When created by a factory this method is called to
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75 * initialize the collection.
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76 * @param identifier The identifier from collection database
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77 * @param factory The factory which created this collection.
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78 * @param context The global context of the runtime system.
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79 * @param data The data which can be use to setup a collection with
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80 * more details.
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81 */
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82 public void setup(
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83 String identifier,
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84 ArtifactCollectionFactory factory,
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85 Object context,
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86 Document data)
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87 {
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88 logger.debug("DefaultArtifactCollection.setup: " + identifier);
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89
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90 artifacts = new ArrayList<Artifact>();
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91 attributes = new HashMap<String, Document>();
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92
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93 setIdentifier(identifier);
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94 }
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95
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96
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97 /**
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98 * Set a new identifier for this collection.
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99 * @param identifier New identifier for this collection.
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100 */
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101 public void setIdentifier(String identifier) {
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102 this.identifier = identifier;
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103 }
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104
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105
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106 /**
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107 * Identify this collection.
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108 * @return Returns unique string to identify this collection globally.
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109 */
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110 public String identifier() {
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111 return identifier;
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112 }
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113
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114
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115 /**
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116 * Set a new owner of this collection.
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117 * @param user New owner for this collection.
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118 */
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119 public void setUser(User user) {
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120 this.user = user;
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121 }
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122
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123
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124 /**
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125 * Identify the owner of the collection.
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126 * @return Returns owner of the collection.
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127 */
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128 public User getUser() {
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129 return user;
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130 }
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131
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132
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133 /**
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134 * Returns the creation time of the collection.
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135 *
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136 * @return the creation time of the collection.
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137 */
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138 public Date getCreationTime() {
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139 return creationTime;
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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 * Sets the creation time of the collection.
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145 *
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146 * @param creationTime The new creation time.
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147 */
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148 public void setCreationTime(Date creationTime) {
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149 this.creationTime = creationTime;
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150 }
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151
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152
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153 /**
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154 * Called from artifact database when an artifact is
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155 * going to be removed from system.
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156 * @param context The global context of the runtime system.
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157 */
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158 public void endOfLife(Object context) {
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159 logger.debug("DefaultArtifactCollection.endOfLife");
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160 }
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161
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162
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163 /**
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164 * Internal hash of this collection.
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165 * @return Returns hash that should stay the same if the internal
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166 * value has not changed. Useful for caching
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167 */
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168 public String hash() {
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169 logger.debug("DefaultArtifactCollection.hash");
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170
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171 return String.valueOf(hashCode());
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172 }
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173
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174
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175 /**
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176 * Called from artifact database before an artifact is
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177 * going to be exported as xml document.
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178 * @param context The global context of the runtime system.
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179 */
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180 public void cleanup(Object context) {
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181 logger.debug("DefaultArtifactCollection.cleanup");
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182 }
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183
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184
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185 /**
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186 * Adds a new artifact to this collection.
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187 *
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188 * @param artifact The new artifact.
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189 * @param attribute The attributes used for this artifact.
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190 * @param context The CallContext.
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191 */
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192 public void addArtifact(
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193 Artifact artifact,
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194 Document attribute,
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195 CallContext context)
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196 {
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197 logger.debug("DefaultArtifactCollection.addArtifact");
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198
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199 artifacts.add(artifact);
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200 attributes.put(artifact.identifier(), attribute);
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201 }
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202
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203
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204 /**
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205 * Removes the given artifact from this collection.
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206 *
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207 * @param artifact The artifact that should be removed.
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208 * @param context The CallContext.
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209 */
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210 public void removeArtifact(Artifact artifact, CallContext context) {
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211 logger.debug("DefaultArtifactCollection.removeArtifact");
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212
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213 if (artifact == null) {
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214 return;
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215 }
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216
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217 artifacts.remove(artifact);
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218 attributes.remove(artifact.identifier());
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219 }
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220
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221
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222 /**
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223 * Returns a list of artifacts that are stored in this collection.
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224 *
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225 * @param context The CallContext.
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226 *
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227 * @return the list of artifacts stored in this collection.
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228 */
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229 public Artifact[] getArtifacts(CallContext context) {
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230 logger.debug("DefaultArtifactCollection.getArtifacts");
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231
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232 return (Artifact[]) artifacts.toArray();
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233 }
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234
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235
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236 /**
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237 * Returns the attribute document for the given artifact.
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238 *
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239 * @param artifact The artifact.
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240 * @param context The CallContext.
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241 *
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242 * @return a document that contains the attributes of the artifact.
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243 */
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244 public Document getAttribute(Artifact artifact, CallContext context) {
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245 logger.debug("DefaultArtifactCollection.getAttribute");
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246
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247 return attributes.get(artifact.identifier());
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248 }
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249
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250
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251 /**
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252 * Set the attribute for the given artifact.
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253 *
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254 * @param artifact The artifact of the attribute.
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255 * @param document The new attribute of the artifact.
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256 * @param context The CallContext.
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257 */
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258 public void setAttribute(
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259 Artifact artifact,
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260 Document document,
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261 CallContext context)
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262 {
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263 logger.debug("DefaultArtifactCollection.setAttribute");
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264
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265 attributes.put(artifact.identifier(), document);
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266 }
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267
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268
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269 /**
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270 * Produce output for this collection.
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271 * @param format Specifies the format of the output.
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272 * @param out Stream to write the result data to.
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273 * @param context The global context of the runtime system.
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274 * @throws IOException Thrown if an I/O occurs.
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275 */
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276 public void out(Document format, OutputStream out, CallContext context)
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277 throws IOException
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278 {
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279 logger.debug("DefaultArtifactCollection.out");
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280 }
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281 }
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282 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
http://dive4elements.wald.intevation.org