Mercurial > dive4elements > framework

annotate artifact-database/src/main/java/de/intevation/artifactdatabase/DefaultArtifactCollection.java @ 201:973f244ed568

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Improved the TransitionEngine with a method that determines if a State B is reachable from a State A. artifacts/trunk@1445 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author Ingo Weinzierl <ingo.weinzierl@intevation.de>
date Wed, 09 Mar 2011 15:48:06 +0000
parents ac0f8bd97277
children b2115f484edb
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 identifier of the collection.
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47 */
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48 protected String name;
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49
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50 /**
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51 * The owner of this collection.
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52 */
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53 protected User user;
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54
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55 /**
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56 * The artifacts stored in this collection.
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57 */
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58 protected List<Artifact> artifacts;
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59
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60 /**
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61 * The attributes used for the artifacts stored in this collection. The key
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62 * of this map represents the identifier of the artifact which the attribute
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63 * belong to.
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64 */
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65 protected Map<String, Document> attributes;
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66
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67 /** The creation time of this collection.*/
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68 protected Date creationTime;
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69
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70
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71 /**
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72 * Default constructor.
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73 */
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74 public DefaultArtifactCollection() {
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75 }
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76
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77
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78 /**
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79 * When created by a factory this method is called to
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80 * initialize the collection.
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81 * @param identifier The identifier from collection database
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82 * @param factory The factory which created this collection.
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83 * @param context The global context of the runtime system.
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84 * @param data The data which can be use to setup a collection with
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85 * more details.
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86 */
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87 public void setup(
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88 String identifier,
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89 String name,
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90 Date creationTime,
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91 ArtifactCollectionFactory factory,
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92 Object context,
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93 Document data)
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94 {
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95 logger.debug("DefaultArtifactCollection.setup: " + identifier);
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96
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97 artifacts = new ArrayList<Artifact>();
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98 attributes = new HashMap<String, Document>();
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99
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100 setIdentifier(identifier);
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101 setName(name);
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102 setCreationTime(creationTime);
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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 * Set a new identifier for this collection.
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108 * @param identifier New identifier for this collection.
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109 */
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110 public void setIdentifier(String identifier) {
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111 this.identifier = 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 * Identify this collection.
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117 * @return Returns unique string to identify this collection globally.
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118 */
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119 public String identifier() {
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120 return identifier;
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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 * Name of this collection.
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126 * @return Returns the name of this collection
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127 */
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128 public String getName() {
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129 return name;
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130 }
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131
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132 /**
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133 * Name of this collection.
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134 * @return Returns the name of this collection
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135 */
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136 public void setName(String name) {
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137 this.name = name;
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138 }
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139
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140
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141 /**
119
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142 * Set a new owner of this collection.
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143 * @param user New owner for this collection.
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144 */
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145 public void setUser(User user) {
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146 this.user = user;
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147 }
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148
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149
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150 /**
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151 * Identify the owner of the collection.
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152 * @return Returns owner of the collection.
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153 */
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154 public User getUser() {
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155 return user;
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156 }
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157
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158
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159 /**
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160 * Returns the creation time of the collection.
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161 *
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162 * @return the creation time of the collection.
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163 */
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164 public Date getCreationTime() {
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165 return creationTime;
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166 }
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167
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168
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169 /**
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170 * Sets the creation time of the collection.
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171 *
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172 * @param creationTime The new creation time.
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173 */
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174 public void setCreationTime(Date creationTime) {
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175 this.creationTime = creationTime;
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176 }
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177
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178
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179 /**
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180 * Called from artifact database when an artifact is
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181 * going to be removed from system.
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182 * @param context The global context of the runtime system.
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183 */
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184 public void endOfLife(Object context) {
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185 logger.debug("DefaultArtifactCollection.endOfLife");
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186 }
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187
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188
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189 /**
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190 * Internal hash of this collection.
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191 * @return Returns hash that should stay the same if the internal
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192 * value has not changed. Useful for caching
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193 */
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194 public String hash() {
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195 logger.debug("DefaultArtifactCollection.hash");
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196
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197 return String.valueOf(hashCode());
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198 }
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199
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200
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201 /**
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202 * Called from artifact database before an artifact is
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203 * going to be exported as xml document.
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204 * @param context The global context of the runtime system.
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205 */
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206 public void cleanup(Object context) {
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207 logger.debug("DefaultArtifactCollection.cleanup");
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208 }
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209
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210
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211 /**
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212 * Adds a new artifact to this collection.
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213 *
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214 * @param artifact The new artifact.
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215 * @param attribute The attributes used for this artifact.
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216 * @param context The CallContext.
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217 */
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218 public void addArtifact(
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219 Artifact artifact,
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220 Document attribute,
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221 CallContext context)
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222 {
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223 logger.debug("DefaultArtifactCollection.addArtifact");
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224
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225 artifacts.add(artifact);
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226 attributes.put(artifact.identifier(), attribute);
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227 }
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228
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229
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230 /**
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231 * Removes the given artifact from this collection.
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232 *
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233 * @param artifact The artifact that should be removed.
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234 * @param context The CallContext.
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235 */
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236 public void removeArtifact(Artifact artifact, CallContext context) {
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237 logger.debug("DefaultArtifactCollection.removeArtifact");
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238
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239 if (artifact == null) {
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240 return;
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241 }
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242
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243 artifacts.remove(artifact);
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244 attributes.remove(artifact.identifier());
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245 }
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246
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247
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248 /**
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249 * Returns a list of artifacts that are stored in this collection.
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250 *
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251 * @param context The CallContext.
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252 *
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253 * @return the list of artifacts stored in this collection.
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254 */
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255 public Artifact[] getArtifacts(CallContext context) {
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256 logger.debug("DefaultArtifactCollection.getArtifacts");
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257
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258 return (Artifact[]) artifacts.toArray();
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259 }
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260
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261
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262 /**
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263 * Returns the attribute document for the given artifact.
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264 *
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265 * @param artifact The artifact.
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266 * @param context The CallContext.
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267 *
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268 * @return a document that contains the attributes of the artifact.
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269 */
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270 public Document getAttribute(Artifact artifact, CallContext context) {
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271 logger.debug("DefaultArtifactCollection.getAttribute");
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272
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273 return attributes.get(artifact.identifier());
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274 }
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275
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276
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277 /**
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278 * Set the attribute for the given artifact.
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279 *
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280 * @param artifact The artifact of the attribute.
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281 * @param document The new attribute of the artifact.
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282 * @param context The CallContext.
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283 */
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284 public void setAttribute(
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285 Artifact artifact,
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286 Document document,
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287 CallContext context)
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288 {
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289 logger.debug("DefaultArtifactCollection.setAttribute");
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290
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291 attributes.put(artifact.identifier(), document);
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292 }
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293
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294
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295 /**
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296 * Produce output for this collection.
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297 * @param format Specifies the format of the output.
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298 * @param out Stream to write the result data to.
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299 * @param context The global context of the runtime system.
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300 * @throws IOException Thrown if an I/O occurs.
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301 */
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302 public void out(Document format, OutputStream out, CallContext context)
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303 throws IOException
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304 {
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305 logger.debug("DefaultArtifactCollection.out");
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306 }
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307 }
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308 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
http://dive4elements.wald.intevation.org