Mercurial > dive4elements > framework
annotate artifact-database/src/main/java/de/intevation/artifactdatabase/rest/ArtifactResource.java @ 28:019b9f02d523
Added REST handler for 'advance' and 'feed' to be called by HTTP POST '/artifact/{uuid}'.
artifacts/trunk@65 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author | Sascha L. Teichmann <sascha.teichmann@intevation.de> |
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date | Thu, 10 Sep 2009 14:44:25 +0000 |
parents | 75bdaf900473 |
children | 22b03d5c84c5 |
rev | line source |
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75bdaf900473
Added REST handler for 'describe'.
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1 package de.intevation.artifactdatabase.rest; |
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2 |
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3 import org.restlet.resource.Get; |
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4 import org.restlet.resource.Post; |
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5 import org.restlet.resource.ServerResource; |
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6 |
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7 import org.restlet.representation.Representation; |
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8 import org.restlet.representation.EmptyRepresentation; |
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9 |
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10 import org.restlet.ext.xml.DomRepresentation; |
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11 |
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12 import de.intevation.artifacts.ArtifactDatabase; |
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13 import de.intevation.artifacts.Artifact; |
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14 |
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15 import org.restlet.data.Request; |
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16 import org.restlet.data.Response; |
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17 import org.restlet.data.Status; |
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18 |
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19 import org.restlet.data.MediaType; |
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20 |
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21 import org.apache.log4j.Logger; |
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22 |
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23 import org.w3c.dom.Document; |
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24 |
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25 import java.io.IOException; |
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26 |
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27 import de.intevation.artifacts.ArtifactNamespaceContext; |
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28 |
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29 import de.intevation.artifactdatabase.XMLUtils; |
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30 |
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31 /** |
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32 * @author Sascha L. Teichmann (sascha.teichmann@intevation) |
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33 */ |
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34 public class ArtifactResource |
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35 extends ServerResource |
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36 { |
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37 private static Logger logger = Logger.getLogger(ArtifactResource.class); |
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38 |
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39 public static final String XPATH_ACTION = "/action/type/@name"; |
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40 |
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41 public static final String PATH = "/artifact/{uuid}"; |
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42 |
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43 public static final String NO_ACTION_MESSAGE = "no action given"; |
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44 public static final String NO_SUCH_ACTION_MESSAGE = "no such action"; |
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45 |
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46 public static final String NO_ARTIFACT_FOUND = "Artifact not found"; |
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47 |
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48 public static final String ADVANCE = "advance"; |
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49 public static final String FEED = "feed"; |
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50 |
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51 @Get |
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52 public Representation represent() { |
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53 |
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54 Request request = getRequest(); |
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55 |
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56 String identifier = (String)request.getAttributes().get("uuid"); |
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57 |
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58 if (logger.isDebugEnabled()) { |
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59 logger.debug("looking for artifact id '" + identifier + "'"); |
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60 } |
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61 |
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62 ArtifactDatabase db = (ArtifactDatabase)getContext() |
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63 .getAttributes().get("database"); |
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64 |
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65 Artifact artifact = db.getArtifact(identifier); |
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66 |
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67 if (artifact == null) { |
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68 Response response = getResponse(); |
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69 response.setStatus(Status.CLIENT_ERROR_NOT_FOUND, NO_ARTIFACT_FOUND); |
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70 return new EmptyRepresentation(); |
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71 } |
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72 |
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73 Document description = artifact.describe(db.getArtifactContext()); |
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74 |
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75 if (logger.isDebugEnabled()) { |
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76 logger.debug("out document: " + description); |
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77 } |
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78 |
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79 return new DomRepresentation( |
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80 MediaType.APPLICATION_XML, description); |
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81 } |
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82 |
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83 @Post |
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84 public Representation representPost() { |
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85 Request request = getRequest(); |
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86 |
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87 Representation requestRepr = request.getEntity(); |
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88 |
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89 Document inputDocument = null; |
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90 try { |
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91 DomRepresentation input = new DomRepresentation(requestRepr); |
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92 inputDocument = input.getDocument(); |
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93 } |
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94 catch (IOException ioe) { |
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95 logger.error(ioe.getMessage()); |
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96 Response response = getResponse(); |
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97 response.setStatus(Status.CLIENT_ERROR_BAD_REQUEST, ioe); |
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98 return new EmptyRepresentation(); |
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99 } |
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100 |
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101 String action = XMLUtils.xpathString( |
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102 inputDocument, |
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103 XPATH_ACTION, |
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104 ArtifactNamespaceContext.INSTANCE); |
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105 |
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106 if (action == null || action.length() == 0) { |
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107 Response response = getResponse(); |
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108 response.setStatus(Status.CLIENT_ERROR_BAD_REQUEST, NO_ACTION_MESSAGE); |
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109 return new EmptyRepresentation(); |
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110 } |
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111 |
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112 int actionType = -1; |
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113 |
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114 if (FEED .equals(action)) actionType = 0; |
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115 else if (ADVANCE.equals(action)) actionType = 1; |
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116 else { |
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117 Response response = getResponse(); |
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118 response.setStatus(Status.CLIENT_ERROR_BAD_REQUEST, NO_SUCH_ACTION_MESSAGE); |
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119 return new EmptyRepresentation(); |
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120 } |
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121 |
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122 String identifier = (String)request.getAttributes().get("uuid"); |
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123 |
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124 if (logger.isDebugEnabled()) { |
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125 logger.debug("looking for artifact id '" + identifier + "'"); |
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126 } |
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127 |
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128 ArtifactDatabase db = (ArtifactDatabase)getContext() |
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129 .getAttributes().get("database"); |
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130 |
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131 Artifact artifact = db.getArtifact(identifier); |
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132 |
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133 if (artifact == null) { |
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134 Response response = getResponse(); |
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135 response.setStatus(Status.CLIENT_ERROR_NOT_FOUND, NO_ARTIFACT_FOUND); |
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136 return new EmptyRepresentation(); |
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137 } |
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138 |
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139 Document document = null; |
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140 |
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141 switch (actionType) { |
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142 case 0: |
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143 document = artifact.feed(inputDocument, db.getArtifactContext()); |
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144 break; |
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145 case 1: |
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146 document = artifact.advance(inputDocument, db.getArtifactContext()); |
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147 break; |
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148 default: |
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149 // should not happen |
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150 return new EmptyRepresentation(); |
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151 } |
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152 |
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153 return new DomRepresentation(MediaType.APPLICATION_XML, document); |
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154 } |
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155 } |
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156 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8: |