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44
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1 /**
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2 * ReST API for accessing groups in the Annotation store.
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3 */
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4 package de.mpiwg.itgroup.annotations.restlet;
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5
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70
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6 /*
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7 * #%L
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8 * AnnotationManager
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9 * %%
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10 * Copyright (C) 2012 - 2014 MPIWG Berlin
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11 * %%
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12 * This program is free software: you can redistribute it and/or modify
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13 * it under the terms of the GNU Lesser General Public License as
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14 * published by the Free Software Foundation, either version 3 of the
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15 * License, or (at your option) any later version.
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16 *
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17 * This program is distributed in the hope that it will be useful,
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18 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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20 * GNU General Lesser Public License for more details.
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21 *
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22 * You should have received a copy of the GNU General Lesser Public
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23 * License along with this program. If not, see
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24 * <http://www.gnu.org/licenses/lgpl-3.0.html>.
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25 * #L%
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26 */
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27
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65
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28 import java.io.UnsupportedEncodingException;
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29 import java.net.URLDecoder;
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44
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30 import java.util.List;
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31
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32 import org.json.JSONArray;
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33 import org.json.JSONException;
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34 import org.json.JSONObject;
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35 import org.neo4j.graphdb.Node;
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36 import org.restlet.data.Status;
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37 import org.restlet.ext.json.JsonRepresentation;
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38 import org.restlet.representation.Representation;
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39 import org.restlet.resource.Get;
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40
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41 import de.mpiwg.itgroup.annotations.Resource;
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42 import de.mpiwg.itgroup.annotations.neo4j.AnnotationStore;
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43
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44 /**
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61
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45 * API for accessing resource objects in the Annotation store.
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44
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46 *
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47 * @author dwinter
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61
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48 *
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44
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49 */
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50 public class AnnotatorResources extends AnnotatorResourceImpl {
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51 protected String getAllowedMethodsForHeader() {
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52 return "OPTIONS,GET";
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53 }
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54
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55 /**
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61
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56 * GET with JSON content-type.
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57 * Parameters: user: short user name uri: user uri
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58 *
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44
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59 * @param entity
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60 * @return
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61 */
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62 @Get("json")
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63 public Representation doGetJSON(Representation entity) {
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61
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64 logger.debug("AnnotatorResources doGetJSON!");
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44
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65 setCorsHeaders();
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61
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66
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67 String jsonId = (String) getRequest().getAttributes().get("id");
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65
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68 if (jsonId != null) {
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69 // URL decode
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70 try {
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71 jsonId = URLDecoder.decode(jsonId, "UTF-8");
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72 } catch (UnsupportedEncodingException e) {
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73 // this shouldn't happen
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74 }
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75 }
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76 String uri = decodeJsonId(jsonId);
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61
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77
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78 logger.debug("resources-id=" + uri);
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79
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61
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80 if (uri == null) {
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81 return getAllResources();
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44
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82 } else {
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61
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83 return getResource(uri);
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44
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84 }
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85 }
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61
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86
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87 protected Representation getResource(String uri) {
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88 AnnotationStore store = getAnnotationStore();
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89 Node resNode = store.getResourceNodeByUri(uri);
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90 Resource resource = store.createResourceFromNode(resNode);
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91 JSONObject jo = new JSONObject();
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92 try {
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93 jo.put("id", encodeJsonId(resource.getUri()));
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94 jo.put("uri", resource.getUri());
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95 } catch (JSONException e) {
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96 }
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97
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98 return new JsonRepresentation(jo);
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44
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99 }
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61
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100
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101 protected Representation getAllResources() {
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102 JSONArray results = new JSONArray();
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44
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103 AnnotationStore store = getAnnotationStore();
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61
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104
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105 List<Resource> resources = store.getResources(null, null);
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106 for (Resource resource : resources) {
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107 JSONObject jo = new JSONObject();
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108 try {
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109 jo.put("id", encodeJsonId(resource.getUri()));
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110 jo.put("uri", resource.getUri());
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111 } catch (JSONException e) {
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44
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112 }
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113 results.put(jo);
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114 }
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115
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44
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116 // assemble result object
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117 JSONObject result = new JSONObject();
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118 try {
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119 result.put("rows", results);
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120 result.put("total", results.length());
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121 } catch (JSONException e) {
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122 setStatus(Status.SERVER_ERROR_INTERNAL, "JSON Error");
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123 return null;
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124 }
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125 logger.debug("sending:");
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126 logger.debug(result);
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127 return new JsonRepresentation(result);
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61
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128 }
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44
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129
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130 }
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