Mercurial > dive4elements > framework

annotate artifact-database/src/main/java/de/intevation/artifactdatabase/DefaultArtifactCollection.java @ 310:63122b9dee1d

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Added interface to listen events in the backend. artifacts/trunk@2435 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author Sascha L. Teichmann <sascha.teichmann@intevation.de>
date Mon, 01 Aug 2011 09:41:40 +0000
parents 942a54670a72
children ec5c7e54cae1
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
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13 import java.util.ArrayList;
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14 import java.util.Date;
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15 import java.util.HashMap;
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16 import java.util.List;
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17 import java.util.Map;
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18
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19 import org.apache.log4j.Logger;
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20
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21 import org.w3c.dom.Document;
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22
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23 import de.intevation.artifacts.Artifact;
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24 import de.intevation.artifacts.ArtifactCollection;
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25 import de.intevation.artifacts.ArtifactCollectionFactory;
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26 import de.intevation.artifacts.CallContext;
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27 import de.intevation.artifacts.User;
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28
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29 import de.intevation.artifacts.common.utils.XMLUtils;
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30
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31
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32 /**
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33 * Trivial implementation of an artifact collection. Useful to be subclassed.
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34 * @author <a href="mailto:ingo.weinzierl@intevation.de">Ingo Weinzierl</a>
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35 */
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36 public class DefaultArtifactCollection
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37 implements ArtifactCollection
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38 {
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39 /** The logger used in this class.*/
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40 private static Logger logger =
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41 Logger.getLogger(DefaultArtifactCollection.class);
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42
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43 /**
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44 * The identifier of the collection.
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45 */
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46 protected String identifier;
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47
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48 /**
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49 * The identifier of the collection.
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50 */
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51 protected String name;
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52
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53 /**
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54 * The owner of this collection.
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55 */
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56 protected User user;
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57
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58 /**
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59 * The attribute of this collection.
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60 */
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61 protected Document attribute;
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62
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63 /**
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64 * The artifacts stored in this collection.
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65 */
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66 protected List<Artifact> artifacts;
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67
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68 /**
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69 * The attributes used for the artifacts stored in this collection. The key
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70 * of this map represents the identifier of the artifact which the attribute
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71 * belong to.
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72 */
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73 protected Map<String, Document> attributes;
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74
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75 /** The creation time of this collection.*/
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76 protected Date creationTime;
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77
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78 protected long ttl;
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79
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80
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81 /**
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82 * Default constructor.
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83 */
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84 public DefaultArtifactCollection() {
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85 }
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86
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87
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88 /**
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89 * When created by a factory this method is called to
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90 * initialize the collection.
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91 * @param identifier The identifier from collection database
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92 * @param factory The factory which created this collection.
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93 * @param context The global context of the runtime system.
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94 * @param data The data which can be use to setup a collection with
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95 * more details.
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96 */
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97 public void setup(
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98 String identifier,
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99 String name,
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100 Date creationTime,
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101 long ttl,
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102 ArtifactCollectionFactory factory,
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103 Object context,
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104 Document data)
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105 {
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106 logger.debug("DefaultArtifactCollection.setup: " + identifier);
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107
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108 artifacts = new ArrayList<Artifact>();
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109 attributes = new HashMap<String, Document>();
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110
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111 setIdentifier(identifier);
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112 setName(name);
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113 setCreationTime(creationTime);
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114 setTTL(ttl);
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115 setAttribute(data);
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116 }
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118
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119 public Document describe(CallContext context) {
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120 logger.debug("DefaultArtifactCollection.describe: " + identifier);
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121
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122 return XMLUtils.newDocument();
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123 }
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125
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126 /**
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127 * Set a new identifier for this collection.
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128 * @param identifier New identifier for this collection.
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129 */
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130 public void setIdentifier(String identifier) {
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131 this.identifier = identifier;
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132 }
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133
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134
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135 /**
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136 * Identify this collection.
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137 * @return Returns unique string to identify this collection globally.
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138 */
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139 public String identifier() {
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140 return identifier;
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141 }
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142
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143
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144 /**
159
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145 * Name of this collection.
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146 * @return Returns the name of this collection
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147 */
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148 public String getName() {
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149 return name;
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150 }
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151
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152 /**
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153 * Name of this collection.
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154 * @return Returns the name of this collection
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155 */
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156 public void setName(String name) {
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157 this.name = name;
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158 }
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159
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160
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161 /**
119
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162 * Set a new owner of this collection.
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163 * @param user New owner for this collection.
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164 */
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165 public void setUser(User user) {
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166 this.user = user;
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167 }
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168
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169
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170 /**
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171 * Identify the owner of the collection.
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172 * @return Returns owner of the collection.
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173 */
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174 public User getUser() {
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175 return user;
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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 * Returns the creation time of the collection.
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181 *
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182 * @return the creation time of the collection.
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183 */
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184 public Date getCreationTime() {
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185 return creationTime;
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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 * Sets the creation time of the collection.
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191 *
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192 * @param creationTime The new creation time.
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193 */
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194 public void setCreationTime(Date creationTime) {
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195 this.creationTime = creationTime;
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196 }
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197
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198
281
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199 public long getTTL() {
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200 return ttl;
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201 }
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202
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203
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204 public void setTTL(long ttl) {
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205 this.ttl = ttl;
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206 }
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207
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208
119
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209 /**
221
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210 * Returns the attribute of the collection.
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211 *
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212 * @return the attribute of the collection.
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213 */
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214 public Document getAttribute() {
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215 return attribute;
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216 }
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217
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218
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219 /**
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220 * Sets the attribute of the collection.
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221 *
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222 * @param attribute The attribute of this collection.
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223 */
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224 public void setAttribute(Document attribute) {
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225 this.attribute = attribute;
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226 }
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227
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228
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229 /**
119
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230 * Called from artifact database when an artifact is
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231 * going to be removed from system.
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232 * @param context The global context of the runtime system.
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233 */
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234 public void endOfLife(Object context) {
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235 logger.debug("DefaultArtifactCollection.endOfLife");
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236 }
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237
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238
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239 /**
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240 * Internal hash of this collection.
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241 * @return Returns hash that should stay the same if the internal
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242 * value has not changed. Useful for caching
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243 */
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244 public String hash() {
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245 logger.debug("DefaultArtifactCollection.hash");
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246
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247 return String.valueOf(hashCode());
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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 * Called from artifact database before an artifact is
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253 * going to be exported as xml document.
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254 * @param context The global context of the runtime system.
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255 */
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256 public void cleanup(Object context) {
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257 logger.debug("DefaultArtifactCollection.cleanup");
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258 }
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259
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260
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261 /**
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262 * Adds a new artifact to this collection.
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263 *
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264 * @param artifact The new artifact.
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265 * @param attribute The attributes used for this artifact.
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266 * @param context The CallContext.
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267 */
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268 public void addArtifact(
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269 Artifact artifact,
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270 Document attribute,
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271 CallContext context)
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272 {
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273 logger.debug("DefaultArtifactCollection.addArtifact");
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274
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275 artifacts.add(artifact);
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276 attributes.put(artifact.identifier(), attribute);
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277 }
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278
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279
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280 /**
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281 * Removes the given artifact from this collection.
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282 *
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283 * @param artifact The artifact that should be removed.
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284 * @param context The CallContext.
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285 */
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286 public void removeArtifact(Artifact artifact, CallContext context) {
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287 logger.debug("DefaultArtifactCollection.removeArtifact");
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288
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289 if (artifact == null) {
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290 return;
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291 }
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292
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293 artifacts.remove(artifact);
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294 attributes.remove(artifact.identifier());
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295 }
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296
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297
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298 /**
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299 * Returns a list of artifacts that are stored in this collection.
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300 *
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301 * @param context The CallContext.
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302 *
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303 * @return the list of artifacts stored in this collection.
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304 */
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305 public Artifact[] getArtifacts(CallContext context) {
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306 logger.debug("DefaultArtifactCollection.getArtifacts");
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307
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308 return (Artifact[]) artifacts.toArray();
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309 }
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310
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311
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312 /**
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313 * Returns the attribute document for the given artifact.
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314 *
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315 * @param artifact The artifact.
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316 * @param context The CallContext.
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317 *
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318 * @return a document that contains the attributes of the artifact.
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319 */
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320 public Document getAttribute(Artifact artifact, CallContext context) {
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321 logger.debug("DefaultArtifactCollection.getAttribute");
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322
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323 return attributes.get(artifact.identifier());
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324 }
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325
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326
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327 /**
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328 * Set the attribute for the given artifact.
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329 *
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330 * @param artifact The artifact of the attribute.
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331 * @param document The new attribute of the artifact.
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332 * @param context The CallContext.
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333 */
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334 public void setAttribute(
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335 Artifact artifact,
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336 Document document,
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337 CallContext context)
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338 {
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339 logger.debug("DefaultArtifactCollection.setAttribute");
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340
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341 attributes.put(artifact.identifier(), document);
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342 }
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343
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344
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345 /**
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346 * Produce output for this collection.
269
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347 * @param type Specifies the output type.
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348 * @param format Specifies the format of the output.
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349 * @param out Stream to write the result data to.
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350 * @param context The global context of the runtime system.
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351 * @throws IOException Thrown if an I/O occurs.
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352 */
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353 public void out(
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354 String type,
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355 Document format,
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356 OutputStream out,
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357 CallContext context)
119
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358 throws IOException
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359 {
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360 logger.debug("DefaultArtifactCollection.out");
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361 }
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362 }
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363 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
http://dive4elements.wald.intevation.org