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1 package de.mpiwg.itgroup.annotations.restlet;
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2
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70
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3 /*
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4 * #%L
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5 * AnnotationManager
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6 * %%
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7 * Copyright (C) 2012 - 2014 MPIWG Berlin
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8 * %%
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9 * This program is free software: you can redistribute it and/or modify
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10 * it under the terms of the GNU Lesser General Public License as
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11 * published by the Free Software Foundation, either version 3 of the
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12 * License, or (at your option) any later version.
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13 *
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14 * This program is distributed in the hope that it will be useful,
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15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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17 * GNU General Lesser Public License for more details.
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18 *
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19 * You should have received a copy of the GNU General Lesser Public
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20 * License along with this program. If not, see
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21 * <http://www.gnu.org/licenses/lgpl-3.0.html>.
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22 * #L%
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23 */
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24
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15
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25 import java.util.List;
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26
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27 import org.json.JSONArray;
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28 import org.json.JSONException;
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29 import org.json.JSONObject;
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30 import org.neo4j.graphdb.Node;
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31 import org.restlet.data.Form;
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32 import org.restlet.data.Status;
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33 import org.restlet.ext.json.JsonRepresentation;
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34 import org.restlet.representation.Representation;
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35 import org.restlet.resource.Get;
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36
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37 import de.mpiwg.itgroup.annotations.Actor;
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38 import de.mpiwg.itgroup.annotations.Group;
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39 import de.mpiwg.itgroup.annotations.Person;
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40 import de.mpiwg.itgroup.annotations.neo4j.AnnotationStore;
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41
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42
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43 /**
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44 * API for accessing groups in the Annotation store.
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45 *
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46 * @author casties
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47 *
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48 */
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49 public class AnnotatorGroups extends AnnotatorResourceImpl {
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50 protected String getAllowedMethodsForHeader() {
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51 return "OPTIONS,GET";
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52 }
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53
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54 /**
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55 * GET with JSON content-type.
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56 * Parameters:
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57 * user: short user name
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58 * uri: user uri
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59 *
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60 * @param entity
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61 * @return
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62 */
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63 @Get("json")
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64 public Representation doGetJSON(Representation entity) {
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65 logger.fine("AnnotatorGroups doGetJSON!");
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66 setCorsHeaders();
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67 // get user from auth token (preferred)
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68 Person authUser = getUserFromAuthToken(entity);
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69 JSONArray results = null;
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70 if (authUser != null && authUser.groups != null) {
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71 results = getGroupsFromPerson(authUser);
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72 } else {
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73 // get user or uri from request
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74 Form form = getRequest().getResourceRef().getQueryAsForm();
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75 String user = form.getFirstValue("user");
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76 String uri = form.getFirstValue("uri");
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77 results = getGroupsFromStore(uri, user);
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78 }
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79 // assemble result object
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80 JSONObject result = new JSONObject();
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81 try {
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82 result.put("rows", results);
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83 result.put("total", results.length());
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84 } catch (JSONException e) {
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85 setStatus(Status.SERVER_ERROR_INTERNAL, "JSON Error");
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86 return null;
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87 }
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88 logger.fine("sending:");
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89 logger.fine(result.toString());
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90 return new JsonRepresentation(result);
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91 }
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92
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93 public JSONArray getGroupsFromPerson(Person person) {
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94 JSONArray results = new JSONArray();
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95 for (String group : person.groups) {
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96 JSONObject jo = new JSONObject();
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97 try {
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98 jo.put("id", group);
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99 jo.put("name", group);
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100 } catch (JSONException e) {
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101 }
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102 results.put(jo);
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103 }
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104 return results;
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105 }
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106
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107 public JSONArray getGroupsFromStore(String uri, String user) {
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108 JSONArray results = new JSONArray();
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109 if (uri == null || uri.isEmpty()) {
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110 // get uri from user-id
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111 uri = Actor.getUriFromId(user, false);
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112 }
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113 AnnotationStore store = getAnnotationStore();
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114 Node person = store.getPersonNodeByUri(uri);
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115 if (person != null) {
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116 List<Group> groups = store.getGroupsForPersonNode(person);
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117 for (Group group : groups) {
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118 JSONObject jo = new JSONObject();
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119 try {
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120 jo.put("id", group.getId());
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121 jo.put("name", group.getName());
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122 jo.put("uri", group.getUriString());
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123 } catch (JSONException e) {
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124 }
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125 results.put(jo);
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126 }
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127 }
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88
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128 return results;
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129 }
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130 }
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