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annotate artifact-database/src/main/java/de/intevation/artifactdatabase/rest/ArtifactResource.java @ 70:ce488c1d3fc4

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Serve services over artifact database. artifacts/trunk@597 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author Sascha L. Teichmann <sascha.teichmann@intevation.de>
date Fri, 22 Jan 2010 11:08:40 +0000
parents 8b72676698b5
children 48d1a9a082c2
rev   line source
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1 package de.intevation.artifactdatabase.rest;
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3 import org.restlet.resource.ResourceException;
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4
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5 import org.restlet.representation.Representation;
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6 import org.restlet.representation.EmptyRepresentation;
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7
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8 import org.restlet.ext.xml.DomRepresentation;
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9
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10 import de.intevation.artifacts.ArtifactDatabase;
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11 import de.intevation.artifacts.ArtifactDatabaseException;
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12 import de.intevation.artifacts.Artifact;
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13 import de.intevation.artifacts.ArtifactNamespaceContext;
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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 import org.restlet.data.MediaType;
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19
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20 import org.apache.log4j.Logger;
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21
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22 import org.w3c.dom.Document;
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24 import java.io.IOException;
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26 import de.intevation.artifactdatabase.XMLUtils;
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27
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28 /**
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29 * @author Sascha L. Teichmann (sascha.teichmann@intevation)
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30 */
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31 public class ArtifactResource
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32 extends BaseResource
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33 {
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34 private static Logger logger = Logger.getLogger(ArtifactResource.class);
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36 public static final String XPATH_ACTION = "/art:action/art:type/@name";
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37
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38 public static final String PATH = "/artifact/{uuid}";
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40 public static final String NO_ACTION_MESSAGE = "no action given";
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41 public static final String NO_SUCH_ACTION_MESSAGE = "no such action";
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43 public static final String NO_ARTIFACT_FOUND = "Artifact not found";
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45 public static final String ADVANCE = "advance";
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46 public static final String FEED = "feed";
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47 public static final String DESCRIBE = "describe";
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48
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49 protected Representation innerGet()
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50 throws ResourceException
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51 {
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52 Request request = getRequest();
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54 String identifier = (String)request.getAttributes().get("uuid");
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55
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56 if (logger.isDebugEnabled()) {
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57 logger.debug("looking for artifact id '" + identifier + "'");
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58 }
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59
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60 ArtifactDatabase db = (ArtifactDatabase)getContext()
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61 .getAttributes().get("database");
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62
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63 try {
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64 return new DomRepresentation(
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65 MediaType.APPLICATION_XML,
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66 db.describe(identifier, null, getCallMeta()));
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67 }
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68 catch (ArtifactDatabaseException adbe) {
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69 logger.warn(adbe.getLocalizedMessage(), adbe);
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70 Response response = getResponse();
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71 response.setStatus(
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72 Status.CLIENT_ERROR_NOT_FOUND, adbe.getMessage());
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73 return new EmptyRepresentation();
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74 }
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75 }
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76
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77 protected Representation dispatch(
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78 String identifier,
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79 String action,
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80 Document source,
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81 ArtifactDatabase db
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82 ) {
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83 Document out = null;
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84
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85 try {
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86 if (action.equals(FEED)) {
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87 out = db.feed(identifier, source, getCallMeta());
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88 }
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89 else if (action.equals(ADVANCE)) {
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90 out = db.advance(identifier, source, getCallMeta());
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91 }
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92 else if (action.equals(DESCRIBE)) {
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93 out = db.describe(identifier, source, getCallMeta());
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94 }
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95 else {
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96 throw new ArtifactDatabaseException(NO_SUCH_ACTION_MESSAGE);
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97 }
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98 }
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99 catch (ArtifactDatabaseException adbe) {
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100 logger.warn(adbe.getLocalizedMessage(), adbe);
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101 Response response = getResponse();
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102 response.setStatus(
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103 Status.CLIENT_ERROR_BAD_REQUEST, adbe.getMessage());
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104 return new EmptyRepresentation();
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105 }
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106
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107 return new DomRepresentation(MediaType.APPLICATION_XML, out);
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108 }
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109
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110 protected Representation innerPost(Representation requestRepr) {
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111
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112 Document inputDocument = null;
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113 try {
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114 DomRepresentation input = new DomRepresentation(requestRepr);
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115 input.setNamespaceAware(true);
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116 inputDocument = input.getDocument();
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117 }
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118 catch (IOException ioe) {
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119 logger.error(ioe.getMessage());
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120 Response response = getResponse();
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121 response.setStatus(Status.CLIENT_ERROR_BAD_REQUEST, ioe);
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122 return new EmptyRepresentation();
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123 }
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124
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125 String action = XMLUtils.xpathString(
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126 inputDocument,
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127 XPATH_ACTION,
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128 ArtifactNamespaceContext.INSTANCE);
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129
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130 if (action == null || action.length() == 0) {
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131 Response response = getResponse();
32
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132 response.setStatus(
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133 Status.CLIENT_ERROR_BAD_REQUEST, NO_ACTION_MESSAGE);
28
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134 return new EmptyRepresentation();
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135 }
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136
40
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137 Request request = getRequest();
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138
28
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139 String identifier = (String)request.getAttributes().get("uuid");
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140
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141 ArtifactDatabase db = (ArtifactDatabase)getContext()
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142 .getAttributes().get("database");
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143
32
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144 return dispatch(identifier, action, inputDocument, db);
27
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145 }
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146 }
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147 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8:
http://dive4elements.wald.intevation.org