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28
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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.Tag;
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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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21 /**
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22 * API for accessing tags in the Annotation store.
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23 *
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24 * @author dwinter
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25 *
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26 */
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27 public class AnnotatorTags extends AnnotatorResourceImpl {
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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 * GET with JSON content-type.
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34 * Parameters:
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35 * user: short user name
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36 * uri: user uri
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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("AnnotatorGroups doGetJSON!");
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44 setCorsHeaders();
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45
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46 String jsonId = (String) getRequest().getAttributes().get("id");
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47 //String id = decodeJsonId(jsonId);
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48 String id = jsonId;
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49 logger.debug("annotation-id=" + id);
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50
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51 if (id==null){
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52 return getAllTags();
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53 } else {
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54
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55 return getTag(id);
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56 }
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57 }
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58
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59 protected Representation getTag(String id){
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60 AnnotationStore store = getAnnotationStore();
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58
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61 String tagUri = BaseRestlet.TAGS_URI_PREFIX + id;
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28
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62 Node tagNode = store.getTagNodeByUri(tagUri);
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63 Tag tag = store.createTagFromNode(tagNode);
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64 JSONObject jo = new JSONObject();
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65 try {
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66 jo.put("id", tag.getId());
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67 jo.put("name", tag.getName());
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68 jo.put("uri", tag.getUri());
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69 } catch (JSONException e) {
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70 }
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71
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72 return new JsonRepresentation(jo);
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73 }
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74 protected Representation getAllTags() {
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75 JSONArray results = new JSONArray();
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76 AnnotationStore store = getAnnotationStore();
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77
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78
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79 List<Tag> tags = store.getTags(null, null);
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80 for (Tag tag : tags) {
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81 JSONObject jo = new JSONObject();
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82 try {
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83 jo.put("id", tag.getId());
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84 jo.put("name", tag.getName());
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85 jo.put("uri", tag.getUri());
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86 } catch (JSONException e) {
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87 }
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88 results.put(jo);
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89 }
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90
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91 // assemble result object
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92 JSONObject result = new JSONObject();
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93 try {
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94 result.put("rows", results);
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95 result.put("total", results.length());
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96 } catch (JSONException e) {
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97 setStatus(Status.SERVER_ERROR_INTERNAL, "JSON Error");
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98 return null;
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99 }
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100 logger.debug("sending:");
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101 logger.debug(result);
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102 return new JsonRepresentation(result);
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103 }
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104
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105
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106
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107 }
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