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1 package de.mpiwg.itgroup.annotations.restlet;
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2
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3 import java.util.ArrayList;
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4 import java.util.List;
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5
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6 import org.json.JSONArray;
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7 import org.json.JSONException;
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8 import org.json.JSONObject;
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9 import org.restlet.data.Form;
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10 import org.restlet.data.Parameter;
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11 import org.restlet.data.Status;
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12 import org.restlet.ext.json.JsonRepresentation;
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13 import org.restlet.representation.Representation;
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14 import org.restlet.resource.Get;
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15
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16 import de.mpiwg.itgroup.annotations.Annotation;
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17 import de.mpiwg.itgroup.annotations.NS;
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18 import de.mpiwg.itgroup.annotations.Person;
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19 import de.mpiwg.itgroup.annotations.neo4j.AnnotationStore;
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20 import de.mpiwg.itgroup.annotations.restlet.utils.JSONObjectComparator;
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21
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22 /**
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23 * API for accessing tags in the Annotation store.
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24 *
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25 * @author dwinter
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26 *
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27 */
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28 public class AnnotatorAnnotationsByTags extends AnnotatorResourceImpl {
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29 protected String getAllowedMethodsForHeader() {
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30 return "OPTIONS,GET";
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31 }
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32
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33 @Get("json")
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34 public Representation doGetJSON(Representation entity) {
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35 logger.debug("AnnotatorAnnotatonsBytag doGetJSON!");
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36 setCorsHeaders();
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37
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37
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38 // do authentication
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39 Person authUser = Person.createPersonWithId(this.checkAuthToken(entity));
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40 logger.debug("request authenticated=" + authUser);
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41
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42
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43 String jsonId = (String) getRequest().getAttributes().get("id");
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44
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45 Form form = getRequest().getResourceRef().getQueryAsForm();
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46 String sortBy=null;
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47 for (Parameter parameter : form) {
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48 if (parameter.getName().equals("sortBy")){
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49 sortBy = parameter.getValue();
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50 }
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51 }
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52
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53 //String id = decodeJsonId(jsonId);
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54 String id = jsonId;
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55 logger.debug("annotation-id=" + id);
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56
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57 AnnotationStore store = getAnnotationStore();
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58 String tagUri=NS.MPIWG_TAGS_URL+id;
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59 List<Annotation> annotations = store.getAnnotationsByTag(tagUri);
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60
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61 //JSONArray results = new JSONArray();
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62 ArrayList<JSONObject> results = new ArrayList<JSONObject>();
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63
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64 for (Annotation annot : annotations) {
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65 //check permission
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66 if (!annot.isActionAllowed("read", authUser, store)) continue;
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67
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68 JSONObject jo = createAnnotatorJson(annot,false);
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69 results.add(jo);
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70 }
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71
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72 if (sortBy!=null){
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73 JSONObjectComparator.sortAnnotations(results,sortBy);
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74 }
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75
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76 JSONArray resultsJa = new JSONArray();
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77 for (JSONObject result:results){
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78 resultsJa.put(result);
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79 }
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80
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81 // assemble result object
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82 JSONObject result = new JSONObject();
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83 try {
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84 result.put("rows", resultsJa);
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85 result.put("total", resultsJa.length());
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86 } catch (JSONException e) {
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87 setStatus(Status.SERVER_ERROR_INTERNAL, "JSON Error");
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88 return null;
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89 }
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90 logger.debug("sending:");
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91 logger.debug(result);
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92 return new JsonRepresentation(result);
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93 }
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94
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95
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96
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97 } |
