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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.ArrayList;
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28 import java.util.List;
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29
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30 import org.json.JSONArray;
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31 import org.json.JSONException;
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32 import org.json.JSONObject;
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33 import org.restlet.data.Form;
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34 import org.restlet.data.Status;
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35 import org.restlet.ext.json.JsonRepresentation;
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36 import org.restlet.representation.Representation;
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37 import org.restlet.resource.Get;
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38
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39 import de.mpiwg.itgroup.annotations.Annotation;
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40 import de.mpiwg.itgroup.annotations.Annotation.Action;
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41 import de.mpiwg.itgroup.annotations.Person;
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42 import de.mpiwg.itgroup.annotations.neo4j.AnnotationStore;
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43 import de.mpiwg.itgroup.annotations.restlet.utils.JSONObjectComparator;
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44
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45 /**
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46 * API for accessing tags in the Annotation store.
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47 *
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48 * @author dwinter
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49 *
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50 */
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51 public class AnnotatorAnnotationsByTags extends AnnotatorResourceImpl {
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52
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53 @Get("json")
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54 public Representation doGetJSON(Representation entity) {
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55 logger.fine("AnnotatorAnnotatonsBytag doGetJSON!");
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56
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57 // do authentication
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58 Person authUser = getUserFromAuthToken(entity);
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59 logger.fine("request authenticated=" + authUser);
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60
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61 String id = (String) getRequest().getAttributes().get("id");
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62 // URL decode
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63 try {
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64 id = URLDecoder.decode(id, "UTF-8");
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65 } catch (UnsupportedEncodingException e) {
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66 // this shouldn't happen
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67 }
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68 logger.fine("annotation-id=" + id);
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69
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70 Form form = getRequest().getResourceRef().getQueryAsForm();
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71 String sortBy = form.getFirstValue("sortBy");
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72
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73 AnnotationStore store = getAnnotationStore();
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74 String tagUri = BaseRestlet.TAGS_URI_PREFIX + id;
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75 List<Annotation> annotations = store.getAnnotationsByTag(tagUri);
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76
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77 // JSONArray results = new JSONArray();
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78 ArrayList<JSONObject> results = new ArrayList<JSONObject>();
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79
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80 for (Annotation annot : annotations) {
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81 // check permission
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82 if (!annot.isActionAllowed(Action.read, authUser, store))
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83 continue;
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84
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85 JSONObject jo = createAnnotatorJson(annot, false);
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86 results.add(jo);
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87 }
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88
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89 if (sortBy != null) {
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90 JSONObjectComparator.sortAnnotations(results, sortBy);
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91 }
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92
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93 JSONArray resultsJa = new JSONArray();
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94 for (JSONObject result : results) {
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95 resultsJa.put(result);
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96 }
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97
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98 // assemble result object
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99 JSONObject result = new JSONObject();
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100 try {
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101 result.put("rows", resultsJa);
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102 result.put("total", resultsJa.length());
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103 } catch (JSONException e) {
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104 setStatus(Status.SERVER_ERROR_INTERNAL, "JSON Error");
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105 return null;
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106 }
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107 return new JsonRepresentation(result);
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108 }
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109
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110 } |
