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18
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1 /**
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2 *
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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.apache.log4j.Logger;
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9 import org.restlet.data.Form;
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10 import org.restlet.data.MediaType;
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22
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11 import org.restlet.data.Reference;
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12 import org.restlet.data.Status;
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13 import org.restlet.representation.Representation;
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14 import org.restlet.representation.StringRepresentation;
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15 import org.restlet.resource.Get;
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22
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16 import org.restlet.resource.Post;
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17 import org.restlet.resource.ServerResource;
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18
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22
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19 import de.mpiwg.itgroup.annotations.Actor;
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20 import de.mpiwg.itgroup.annotations.Group;
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22
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21 import de.mpiwg.itgroup.annotations.Person;
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22 import de.mpiwg.itgroup.annotations.neo4j.AnnotationStore;
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23
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24 /**
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25 * @author casties
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22
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26 *
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27 */
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28 public class AnnotationStoreGroups extends ServerResource {
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29
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30 public static Logger logger = Logger.getLogger(AnnotationStoreGroups.class);
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31
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32 private AnnotationStore store;
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33
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22
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34 /**
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35 * GET with HTML content type. Lists all groups.
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36 *
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37 * @param entity
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38 * @return
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39 */
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40 @Get("html")
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22
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41 public Representation doGetHTML(Representation entity) {
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42 // id from URI /annotations/groups/{id}
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43 String id = (String) getRequest().getAttributes().get("id");
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44 logger.debug("group-id=" + id);
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45 String result = null;
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46 store = getAnnotationStore();
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47 if (id == null) {
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48 // list all groups
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49 result = "<html><body>\n<h1>Groups</h1>\n<table>";
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50 result += "<tr><th>id</th><th>name</th><th>uri</th></tr>";
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21
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51 List<Group> groups = store.getGroups("uri", "*");
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52 for (Group group : groups) {
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22
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53 Reference groupUrl = this.getReference();
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54 groupUrl.addSegment(group.getId());
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55 result += String.format("<tr><td><a href=\"%s\">%s</a></td><td>%s</td><td>%s</td></tr>\n", groupUrl,
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56 group.getId(), group.getName(), group.getUri());
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21
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57 }
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58 result += "</table>\n</body>\n</html>";
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59 } else {
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60 // just one group
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61 Reference groupsUrl = this.getReference().getParentRef();
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62 result = "<html><body>\n<h1>Group</h1>\n";
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63 result += String.format("<p><a href=\"%s\">All groups</a></p>", groupsUrl);
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64 Group group = new Group(id);
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65 group = (Group) store.getActor(group);
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66 result += "<table>";
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67 result += String.format("<tr><td><b>id</b></td><td>%s</td></tr>\n", group.getId());
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68 result += String.format("<tr><td><b>name</b></td><td>%s</td></tr>\n", group.getName());
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69 result += String.format("<tr><td><b>uri</b></td><td>%s</td></tr>\n", group.getUri());
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70 result += "<tr><td><b>members</b></td><td>";
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71 List<Person> members = store.getMembersOfGroup(group);
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72 for (Person p : members) {
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73 result += String.format("%s (%s)\n", p.getName(), p.getIdString());
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74 }
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75 result += "</td></tr>\n";
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76 result += "</table>\n</body>\n</html>";
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18
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77 }
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78
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79 logger.debug("sending:");
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80 logger.debug(result);
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81 return new StringRepresentation(result, MediaType.TEXT_HTML);
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82 }
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83
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84 /**
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85 * POST with HTML content-type. Creates a new Group.
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86 *
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87 * @return
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88 */
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89 @Post
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90 public Representation doPostHTML(Representation entity) {
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91 logger.debug("AnnotationStoreGroups doPostHTML!");
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92 // TODO: do authentication
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93 Form form = new Form(entity);
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94 String id = form.getFirstValue("id");
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95 String name = form.getFirstValue("name");
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96 if (id == null || id.isEmpty()) {
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97 // invalid id
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98 setStatus(Status.CLIENT_ERROR_BAD_REQUEST);
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99 return null;
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100 }
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101 String gid = makeGroupId(id);
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102 Group newGroup = new Group(gid, null, name);
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103 store = getAnnotationStore();
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104 Actor storedGroup = store.storeActor(newGroup);
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105 gid = storedGroup.getId();
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106 // return 303: see other
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107 setStatus(Status.REDIRECTION_SEE_OTHER);
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108 // go GET URL for this group
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109 Reference groupUrl = this.getReference();
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110 groupUrl.addSegment(gid);
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111 this.getResponse().setLocationRef(groupUrl);
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112 return null;
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113 }
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114
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115 /**
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116 * Returns a group id based on the given id.
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117 *
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118 * @param id
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119 * @return
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120 */
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121 protected String makeGroupId(String id) {
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122 // TODO: should we use different ids?
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123 id = id.replaceAll("\\W", "_");
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124 id = id.toLowerCase();
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125 return id;
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18
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126 }
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127
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128 protected AnnotationStore getAnnotationStore() {
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129 if (store == null) {
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19
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130 store = ((BaseRestlet) getApplication()).getAnnotationStore();
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18
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131 }
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132 return store;
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133 }
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134 }
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