Mercurial > hg > AnnotationManagerN4J

annotate src/main/java/de/mpiwg/itgroup/annotations/restlet/AnnotatorSearch.java @ 14:629e15b345aa

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permissions mostly work. need more server-side checking.
author casties
date Fri, 13 Jul 2012 20:41:02 +0200
parents 3599b29c393f
children 58357a4b86de
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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
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19 /**
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20 * Implements the "search" uri of the Annotator API. see
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21 * <https://github.com/okfn/annotator/wiki/Storage>
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22 *
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23 * @author casties
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24 *
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25 */
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26 public class AnnotatorSearch extends AnnotatorResourceImpl {
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27
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28 protected String getAllowedMethodsForHeader() {
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29 return "OPTIONS,GET";
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30 }
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31
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32 /**
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33 * result for JSON content-type. optional search parameters: uri, user, limit,
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34 * offset.
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35 *
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36 * @param entity
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37 * @return
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38 */
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39 @Get("json")
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40 public Representation doGetJSON(Representation entity) {
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41 logger.debug("AnnotatorSearch doGetJSON!");
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42 setCorsHeaders();
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43 // do authentication
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44 String authUser = this.checkAuthToken(entity);
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45 logger.debug("request authenticated=" + authUser);
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46
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47 Form form = getRequest().getResourceRef().getQueryAsForm();
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48 String uri = form.getFirstValue("uri");
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49 String user = form.getFirstValue("user");
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50 String limit = form.getFirstValue("limit");
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51 String offset = form.getFirstValue("offset");
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52
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53 JSONArray results = new JSONArray();
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54 // do search
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55 logger.debug(String.format("searching for uri=%s user=%s", uri, user));
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56 List<Annotation> annots = getAnnotationStore().searchByUriUser(uri, user, limit, offset);
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57 for (Annotation annot : annots) {
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58 // check permission
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59 if (!annot.isActionAllowed("read", authUser)) continue;
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60 JSONObject jo = createAnnotatorJson(annot, (authUser == null));
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61 if (jo != null) {
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62 results.put(jo);
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63 } else {
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64 setStatus(Status.SERVER_ERROR_INTERNAL, "JSON Error");
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65 return null;
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66 }
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67 }
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68 // assemble result object
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69 JSONObject result = new JSONObject();
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70 try {
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71 result.put("rows", results);
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72 result.put("total", results.length());
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73 } catch (JSONException e) {
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74 setStatus(Status.SERVER_ERROR_INTERNAL, "JSON Error");
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75 return null;
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76 }
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77
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78 logger.debug("sending:");
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79 logger.debug(result);
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80 return new JsonRepresentation(result);
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81 }
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82
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83 }