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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.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.Resource;
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18 import de.mpiwg.itgroup.annotations.neo4j.AnnotationStore;
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19
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20 /**
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61
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21 * API for accessing resource objects in the Annotation store.
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22 *
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23 * @author dwinter
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61
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24 *
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25 */
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26 public class AnnotatorResources extends AnnotatorResourceImpl {
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27 protected String getAllowedMethodsForHeader() {
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28 return "OPTIONS,GET";
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29 }
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30
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31 /**
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61
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32 * GET with JSON content-type.
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33 * Parameters: user: short user name uri: user uri
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34 *
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35 * @param entity
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36 * @return
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37 */
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38 @Get("json")
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39 public Representation doGetJSON(Representation entity) {
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40 logger.debug("AnnotatorResources doGetJSON!");
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41 setCorsHeaders();
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42
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43 String jsonId = (String) getRequest().getAttributes().get("id");
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44 String uri = decodeJsonId(jsonId);
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45
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46 logger.debug("resources-id=" + uri);
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47
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48 if (uri == null) {
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49 return getAllResources();
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44
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50 } else {
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51 return getResource(uri);
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44
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52 }
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53 }
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54
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55 protected Representation getResource(String uri) {
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56 AnnotationStore store = getAnnotationStore();
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57 Node resNode = store.getResourceNodeByUri(uri);
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58 Resource resource = store.createResourceFromNode(resNode);
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59 JSONObject jo = new JSONObject();
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60 try {
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61 jo.put("id", encodeJsonId(resource.getUri()));
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62 jo.put("uri", resource.getUri());
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63 } catch (JSONException e) {
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64 }
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65
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66 return new JsonRepresentation(jo);
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67 }
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61
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68
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69 protected Representation getAllResources() {
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70 JSONArray results = new JSONArray();
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71 AnnotationStore store = getAnnotationStore();
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72
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73 List<Resource> resources = store.getResources(null, null);
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74 for (Resource resource : resources) {
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75 JSONObject jo = new JSONObject();
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76 try {
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77 jo.put("id", encodeJsonId(resource.getUri()));
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78 jo.put("uri", resource.getUri());
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79 } catch (JSONException e) {
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80 }
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81 results.put(jo);
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82 }
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83
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84 // assemble result object
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85 JSONObject result = new JSONObject();
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86 try {
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87 result.put("rows", results);
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88 result.put("total", results.length());
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89 } catch (JSONException e) {
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90 setStatus(Status.SERVER_ERROR_INTERNAL, "JSON Error");
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91 return null;
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92 }
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93 logger.debug("sending:");
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94 logger.debug(result);
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95 return new JsonRepresentation(result);
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61
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96 }
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97
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98 }
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