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15
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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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6 import java.util.List;
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7
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8 import org.json.JSONArray;
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9 import org.json.JSONException;
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10 import org.json.JSONObject;
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11 import org.neo4j.graphdb.Node;
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12 import org.restlet.data.Form;
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13 import org.restlet.data.Status;
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14 import org.restlet.ext.json.JsonRepresentation;
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15 import org.restlet.representation.Representation;
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16 import org.restlet.resource.Get;
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17
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18 import de.mpiwg.itgroup.annotations.Actor;
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19 import de.mpiwg.itgroup.annotations.Group;
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20 import de.mpiwg.itgroup.annotations.neo4j.AnnotationStore;
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21
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22
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23 /**
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24 * API for accessing groups in the Annotation store.
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25 *
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26 * @author casties
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27 *
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28 */
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29 public class AnnotatorGroups extends AnnotatorResourceImpl {
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30 protected String getAllowedMethodsForHeader() {
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31 return "OPTIONS,GET";
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32 }
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33
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34 /**
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35 * GET with JSON content-type.
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36 * Parameters:
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37 * user: short user name
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38 * uri: user uri
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39 *
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40 * @param entity
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41 * @return
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42 */
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43 @Get("json")
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44 public Representation doGetJSON(Representation entity) {
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45 logger.debug("AnnotatorGroups doGetJSON!");
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46 setCorsHeaders();
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47 Form form = getRequest().getResourceRef().getQueryAsForm();
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48 String user = form.getFirstValue("user");
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49 String uri = form.getFirstValue("uri");
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50 if (uri == null || uri.isEmpty()) {
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51 // get uri from user-id
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52 uri = Actor.getUriFromId(user, false);
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53 }
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54 JSONArray results = new JSONArray();
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55 AnnotationStore store = getAnnotationStore();
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56 Node person = store.getPersonNodeByUri(uri);
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57 if (person != null) {
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58 List<Group> groups = store.getGroupsForPersonNode(person);
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59 for (Group group : groups) {
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60 JSONObject jo = new JSONObject();
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61 try {
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62 jo.put("id", group.getId());
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63 jo.put("name", group.getName());
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64 jo.put("uri", group.getUriString());
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65 } catch (JSONException e) {
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66 }
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67 results.put(jo);
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68 }
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69 }
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70 // assemble result object
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71 JSONObject result = new JSONObject();
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72 try {
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73 result.put("rows", results);
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74 result.put("total", results.length());
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75 } catch (JSONException e) {
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76 setStatus(Status.SERVER_ERROR_INTERNAL, "JSON Error");
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77 return null;
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78 }
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79 logger.debug("sending:");
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80 logger.debug(result);
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81 return new JsonRepresentation(result);
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82
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83 }
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84 }
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