Mercurial > dive4elements > framework
annotate artifact-database/src/main/java/org/dive4elements/artifactdatabase/rest/CollectionResource.java @ 570:584591f8203c 3.2.x
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author | Tom Gottfried <tom@intevation.de> |
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date | Mon, 28 Feb 2022 17:41:14 +0100 |
parents | 415df0fc4fa1 |
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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 org.dive4elements.artifactdatabase.rest; |
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9 |
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10 import org.dive4elements.artifacts.ArtifactDatabase; |
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11 import org.dive4elements.artifacts.ArtifactDatabaseException; |
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12 import org.dive4elements.artifacts.CallMeta; |
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13 |
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14 import org.dive4elements.artifacts.common.ArtifactNamespaceContext; |
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15 import org.dive4elements.artifacts.common.utils.XMLUtils; |
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16 |
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17 import org.dive4elements.artifactdatabase.ArtifactDatabaseImpl; |
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18 |
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19 import java.io.IOException; |
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20 |
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21 import javax.xml.xpath.XPathConstants; |
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22 |
570 | 23 import org.apache.logging.log4j.Logger; |
24 import org.apache.logging.log4j.LogManager; | |
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25 |
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26 import org.restlet.data.MediaType; |
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27 import org.restlet.data.Status; |
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28 import org.restlet.ext.xml.DomRepresentation; |
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29 import org.restlet.representation.EmptyRepresentation; |
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30 import org.restlet.representation.Representation; |
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31 import org.restlet.Request; |
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32 import org.restlet.Response; |
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33 |
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34 import org.w3c.dom.Document; |
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35 import org.w3c.dom.Node; |
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36 |
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37 |
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38 /** |
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39 * @author <a href="mailto:ingo.weinzierl@intevation">Ingo Weinzierl</a> |
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40 */ |
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41 public class CollectionResource |
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42 extends BaseResource |
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43 { |
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44 /** The logger that is used in this class.*/ |
570 | 45 private static Logger logger = LogManager.getLogger(CollectionResource.class); |
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46 |
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47 /** server URL where to reach the resource.*/ |
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48 public static final String PATH = "/collection/{uuid}"; |
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49 |
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50 /** |
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51 * XPath to figure out the type of action (feed, advance) via the |
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52 * incoming POST request. |
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53 */ |
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54 public static final String XPATH_ACTION = "/art:action/art:type/@name"; |
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55 |
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56 /** |
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57 * XPath to figure out the identifier of the artifact described in the |
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58 * action. |
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59 */ |
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60 public static final String XPATH_ARTIFACT = |
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61 "/art:action/art:type/art:artifact/@uuid"; |
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62 |
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63 /** Error message if no action was given.*/ |
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64 public static final String NO_ACTION_MSG = "no action given"; |
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65 |
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66 /** Error message if a unknown action was given.*/ |
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67 public static final String NO_SUCH_ACTION_MSG = "no such action"; |
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68 |
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69 /** Action name for deleting a collection.*/ |
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70 public static final String ACTION_DELETE = "delete"; |
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71 |
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72 /** Action name for describing the collection.*/ |
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73 public static final String ACTION_DESCRIBE = "describe"; |
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74 |
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75 /** Action name for retrieving the attribute of a collection.*/ |
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76 public static final String ACTION_GET_ATTRIBUTE = "getattribute"; |
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77 |
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78 /** Action name for retrieving the attributes of an artifact stored in the |
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79 * collection.*/ |
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80 public static final String ACTION_GET_ITEM_ATTRIBUTE = "getitemattribute"; |
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81 |
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82 /** Action name for setting the attribute of a collection.*/ |
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83 public static final String ACTION_SET_ATTRIBUTE = "setattribute"; |
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84 |
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85 /** Action name for setting the attribute for an artifact stored in the |
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86 * collection.*/ |
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87 public static final String ACTION_SET_ITEM_ATTRIBUTE = "setitemattribute"; |
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88 |
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89 /** Action name for adding a new artifact to the collection.*/ |
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90 public static final String ACTION_ADD_ARTIFACT = "addartifact"; |
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91 |
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92 /** Action name for removing an artifact from the collection.*/ |
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93 public static final String ACTION_REMOVE_ARTIFACT = "removeartifact"; |
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94 |
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95 /** Action name for listing the artifacts of the collection.*/ |
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96 public static final String ACTION_LIST_ARTIFACTS = "listartifacts"; |
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97 |
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98 /** Action name for setting the ttl of a collection.*/ |
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99 public static final String ACTION_SET_TTL = "settimetolive"; |
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100 |
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101 /** Action name for setting the name of a collection.*/ |
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102 public static final String ACTION_SET_NAME = "setname"; |
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103 |
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104 |
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105 /** |
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106 * Method to figure out which POST action was triggered and perform this |
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107 * operation on the collection specified by 'identifier' and found in the |
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108 * artifact database 'db'. |
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109 * |
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110 * @param identifier The identifier of the collection. |
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111 * @param action The action to be performed. |
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112 * @param source The input document to further parameterize the operation. |
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113 * @param db The artifact database where to find the collection. |
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114 * |
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115 * @return The representation produced by the performed action. |
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116 */ |
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117 protected Representation dispatch( |
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118 String identifier, |
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119 String action, |
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120 Document source, |
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121 ArtifactDatabase db |
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122 ) { |
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123 Document out = null; |
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124 |
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125 try { |
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126 CallMeta meta = getCallMeta(); |
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127 |
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128 if (action.equals(ACTION_DELETE)) { |
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129 logger.info("Delete collection '" + identifier + "'"); |
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130 out = db.deleteCollection(identifier, getCallMeta()); |
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131 } |
196
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132 else if (action.equals(ACTION_DESCRIBE)) { |
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133 logger.info("Describe collection '" + identifier + "'"); |
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134 |
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135 out = db.describeCollection(identifier, meta); |
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136 } |
142
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137 else if (action.equals(ACTION_ADD_ARTIFACT)) { |
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138 String art = getArtifactIdentifier(source); |
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139 |
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140 logger.info("Add artifact '" + art + "' to collection."); |
189
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141 out = db.addCollectionArtifact(identifier, art, source, meta); |
142
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142 } |
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143 else if (action.equals(ACTION_REMOVE_ARTIFACT)) { |
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144 String art = getArtifactIdentifier(source); |
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145 |
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146 logger.info("Remove artifact '" + art + "' from collection."); |
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147 out = db.removeCollectionArtifact(identifier, art, meta); |
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148 } |
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149 else if (action.equals(ACTION_LIST_ARTIFACTS)) { |
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150 logger.info("List artifacts of collection '" + identifier +"'"); |
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151 out = db.listCollectionArtifacts(identifier, meta); |
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152 } |
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153 else if (action.equals(ACTION_SET_ATTRIBUTE)) { |
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154 String art = getArtifactIdentifier(source); |
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155 |
253
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156 logger.info("Set attribute for collection '" + identifier + "'"); |
268
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157 |
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158 Document attr = getCollectionAttribute(source); |
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159 |
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160 out = db.setCollectionAttribute(identifier, meta, attr); |
253
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161 } |
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162 else if (action.equals(ACTION_SET_ITEM_ATTRIBUTE)) { |
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163 String art = getArtifactIdentifier(source); |
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164 |
142
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165 logger.info("Set attribute for artifact '" + art + "'"); |
252
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166 out = db.setCollectionItemAttribute(identifier, art, source, meta); |
142
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167 } |
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168 else if (action.equals(ACTION_GET_ATTRIBUTE)) { |
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169 String art = getArtifactIdentifier(source); |
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170 |
253
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171 logger.info("Retrieve attribute of collection '" + identifier + "'"); |
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172 out = db.getCollectionAttribute(identifier, meta); |
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173 } |
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174 else if (action.equals(ACTION_GET_ITEM_ATTRIBUTE)) { |
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175 String art = getArtifactIdentifier(source); |
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176 |
142
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177 logger.info("Retrieve attribute of artifact '" + art + "'"); |
252
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178 out = db.getCollectionItemAttribute(identifier, art, meta); |
142
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179 } |
273
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180 else if (action.equals(ACTION_SET_TTL)) { |
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181 out = db.setCollectionTTL(identifier, source, meta); |
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182 } |
275
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183 else if (action.equals(ACTION_SET_NAME)) { |
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184 out = db.setCollectionName(identifier, source, meta); |
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185 } |
142
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186 else { |
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187 throw new ArtifactDatabaseException(NO_SUCH_ACTION_MSG); |
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188 } |
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189 } |
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190 catch (ArtifactDatabaseException adbe) { |
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191 logger.warn(adbe.getLocalizedMessage(), adbe); |
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192 |
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193 Response response = getResponse(); |
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194 response.setStatus( |
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195 Status.CLIENT_ERROR_BAD_REQUEST, adbe.getMessage()); |
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196 return new EmptyRepresentation(); |
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197 } |
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198 |
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199 return new DomRepresentation(MediaType.APPLICATION_XML, out); |
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200 } |
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201 |
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202 |
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203 @Override |
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204 protected Representation innerPost(Representation requestRepr) { |
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205 Document input = null; |
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206 try { |
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207 DomRepresentation in = new DomRepresentation(requestRepr); |
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208 in.setNamespaceAware(true); |
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209 input = in.getDocument(); |
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210 } |
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211 catch (IOException ioe) { |
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212 logger.error(ioe.getLocalizedMessage(), ioe); |
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213 |
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214 Response response = getResponse(); |
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215 response.setStatus(Status.CLIENT_ERROR_BAD_REQUEST, ioe); |
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216 return new EmptyRepresentation(); |
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217 } |
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218 |
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219 String action = XMLUtils.xpathString( |
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220 input, XPATH_ACTION, ArtifactNamespaceContext.INSTANCE); |
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221 |
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222 if (action == null || action.length() == 0) { |
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223 Response response = getResponse(); |
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224 response.setStatus( |
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225 Status.CLIENT_ERROR_BAD_REQUEST, NO_ACTION_MSG); |
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226 return new EmptyRepresentation(); |
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227 } |
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228 |
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229 Request request = getRequest(); |
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230 |
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231 String identifier = (String) request.getAttributes().get("uuid"); |
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232 |
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233 ArtifactDatabase db = getArtifactDatabase(); |
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234 |
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235 return dispatch(identifier, action, input, db); |
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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 * Retrieves the identifier of the artifact used in the action. |
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241 * |
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242 * @param source The incoming document that describes the operation. |
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243 * |
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244 * @return the uuid of the artifact described in the document. |
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245 */ |
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246 protected String getArtifactIdentifier(Document source) { |
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247 return XMLUtils.xpathString( |
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248 source, XPATH_ARTIFACT, ArtifactNamespaceContext.INSTANCE); |
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249 } |
268
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250 |
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251 |
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252 /** |
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253 * Returns the attribute for a collection of the incoming request document. |
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254 * |
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255 * @param request The request document. |
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256 * |
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257 * @return the contained attribute as document. |
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258 */ |
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259 protected Document getCollectionAttribute(Document request) { |
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260 Node attr = (Node) XMLUtils.xpath( |
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261 request, |
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262 ArtifactDatabaseImpl.XPATH_COLLECTION_ATTRIBUTE, |
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263 XPathConstants.NODE, |
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264 ArtifactNamespaceContext.INSTANCE); |
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265 |
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266 Document newAttr = XMLUtils.newDocument(); |
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267 |
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268 if (attr == null) { |
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269 logger.error("Collection attribute document not found!"); |
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270 return newAttr; |
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271 } |
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272 |
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273 newAttr.appendChild(newAttr.importNode(attr, true)); |
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274 |
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275 return newAttr; |
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276 } |
142
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277 } |