Mercurial > dive4elements > framework
annotate artifact-database/src/main/java/de/intevation/artifactdatabase/DefaultArtifactCollection.java @ 137:f92ad0e40df2
Added a resource that handles user specific actions.
artifacts/trunk@1362 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author | Ingo Weinzierl <ingo.weinzierl@intevation.de> |
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date | Wed, 02 Mar 2011 11:07:21 +0000 |
parents | 3bb121d5b0b7 |
children | db0d20440b92 |
rev | line source |
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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 : |