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