Mercurial > hg > AnnotationManagerN4J

annotate src/main/java/de/mpiwg/itgroup/annotations/restlet/AnnotatorSearch.java @ 44:5e9d90461929

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rest interface for resources
author dwinter
date Wed, 26 Sep 2012 17:01:59 +0200
parents 0731c4549065
children 9f8c9611848a
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1 /**
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2 * Implements the "search" uri of the Annotator API.
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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.restlet.data.Form;
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12 import org.restlet.data.Status;
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13 import org.restlet.ext.json.JsonRepresentation;
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14 import org.restlet.representation.Representation;
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15 import org.restlet.resource.Get;
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16
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17 import de.mpiwg.itgroup.annotations.Annotation;
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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
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21 /**
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22 * Implements the "search" uri of the Annotator API. see
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23 * <https://github.com/okfn/annotator/wiki/Storage>
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24 *
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25 * @author casties
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26 *
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27 */
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28 public class AnnotatorSearch extends AnnotatorResourceImpl {
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29
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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 * result for JSON content-type. optional search parameters: uri, user, limit,
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36 * offset.
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37 *
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38 * @param entity
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39 * @return
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40 */
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41 @Get("json")
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42 public Representation doGetJSON(Representation entity) {
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43 logger.debug("AnnotatorSearch doGetJSON!");
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44 setCorsHeaders();
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45 // do authentication
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46 Person authUser = Person.createPersonWithId(this.checkAuthToken(entity));
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47 logger.debug("request authenticated=" + authUser);
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48
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49 Form form = getRequest().getResourceRef().getQueryAsForm();
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50 String uri = form.getFirstValue("uri");
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51 String user = form.getFirstValue("user");
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52 String limit = form.getFirstValue("limit");
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53 String offset = form.getFirstValue("offset");
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54
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55 JSONArray results = new JSONArray();
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56 // do search
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57 logger.debug(String.format("searching for uri=%s user=%s", uri, user));
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58 AnnotationStore store = getAnnotationStore();
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59 List<Annotation> annots = store.searchAnnotationByUriUser(uri, user, limit, offset);
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60 for (Annotation annot : annots) {
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61 // check permission
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62 if (!annot.isActionAllowed("read", authUser, store)) continue;
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63 JSONObject jo = createAnnotatorJson(annot, (authUser == null));
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64 if (jo != null) {
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65 results.put(jo);
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66 } else {
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67 setStatus(Status.SERVER_ERROR_INTERNAL, "JSON Error");
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68 return null;
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69 }
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70 }
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71 // assemble result object
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72 JSONObject result = new JSONObject();
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73 try {
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74 result.put("rows", results);
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75 result.put("total", results.length());
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76 } catch (JSONException e) {
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77 setStatus(Status.SERVER_ERROR_INTERNAL, "JSON Error");
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78 return null;
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79 }
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80
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81 logger.debug("sending:");
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82 logger.debug(result);
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83 return new JsonRepresentation(result);
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84 }
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85
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86 }