Mercurial > hg > AnnotationManagerN4J

annotate src/main/java/de/mpiwg/itgroup/annotations/restlet/annotations_ui/GroupsResource.java @ 70:2b1e6df5e21a

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added lgpl_v3 license information.
author casties
date Thu, 06 Mar 2014 15:09:04 +0100
parents 0731c4549065
children 25eb2e1df106
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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.annotations_ui;
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5
70
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6 /*
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7 * #%L
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8 * AnnotationManager
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9 * %%
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10 * Copyright (C) 2012 - 2014 MPIWG Berlin
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11 * %%
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12 * This program is free software: you can redistribute it and/or modify
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13 * it under the terms of the GNU Lesser General Public License as
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14 * published by the Free Software Foundation, either version 3 of the
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15 * License, or (at your option) any later version.
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16 *
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17 * This program is distributed in the hope that it will be useful,
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18 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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20 * GNU General Lesser Public License for more details.
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21 *
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22 * You should have received a copy of the GNU General Lesser Public
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23 * License along with this program. If not, see
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24 * <http://www.gnu.org/licenses/lgpl-3.0.html>.
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25 * #L%
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26 */
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27
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28 import java.util.List;
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29
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30 import org.apache.log4j.Logger;
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31 import org.restlet.data.Form;
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32 import org.restlet.data.MediaType;
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33 import org.restlet.data.Reference;
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34 import org.restlet.data.Status;
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35 import org.restlet.representation.Representation;
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36 import org.restlet.representation.StringRepresentation;
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37 import org.restlet.resource.Get;
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38 import org.restlet.resource.Post;
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39 import org.restlet.resource.ResourceException;
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40 import org.restlet.resource.ServerResource;
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41
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42 import de.mpiwg.itgroup.annotations.Actor;
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43 import de.mpiwg.itgroup.annotations.Group;
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44 import de.mpiwg.itgroup.annotations.neo4j.AnnotationStore;
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45 import de.mpiwg.itgroup.annotations.restlet.BaseRestlet;
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46
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47 /**
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48 * Resource class for the list of annotation groups.
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49 *
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50 * @author casties
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51 *
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52 */
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53 public class GroupsResource extends ServerResource {
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54
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55 public static Logger logger = Logger.getLogger(GroupsResource.class);
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56
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57 private AnnotationStore store;
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58
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59 @Override
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60 protected void doInit() throws ResourceException {
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61 super.doInit();
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62 // get store instance
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63 if (store == null) {
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64 store = ((BaseRestlet) getApplication()).getAnnotationStore();
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65 }
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66 }
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67
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68 /**
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69 * GET with HTML content type. Lists all groups.
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70 *
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71 * @param entity
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72 * @return
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73 */
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74 @Get("html")
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75 public Representation doGetHTML(Representation entity) {
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76 String result = null;
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77 // get form parameter
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78 Form f = this.getQuery();
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79 String form = f.getFirstValue("form");
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80 if (form != null && form.equals("new_group")) {
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81 // output new group form
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82 result = "<html><body>\n";
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83 result += "<h1>New group</h1>\n";
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84 result += String.format("<p><a href=\"%s\">All groups</a></p>", this.getReference());
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85 result += String.format("<form method=\"post\" action=\"%s\">\n", this.getReference().getHierarchicalPart());
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86 result += "<table>";
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87 result += "<tr><td><b>id</b></td><td><input type=\"text\" name=\"id\"/></td></tr>\n";
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88 result += "<tr><td><b>name</b></td><td><input type=\"text\" name=\"name\"/></td></tr>\n";
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89 result += "</table>\n";
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90 result += "<p><input type=\"submit\"/></p>\n";
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91 result += "</form>\n</body>\n</html>";
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92 } else {
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93 // list all groups
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94 result = "<html><body>\n<h1>Groups</h1>\n";
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95 result += "<table>\n";
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96 result += "<tr><th>id</th><th>name</th><th>uri</th></tr>";
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97 List<Group> groups = store.getGroups("uri", "*");
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98 for (Group group : groups) {
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99 Reference groupUrl = this.getReference().clone();
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100 groupUrl.addSegment(group.getId());
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101 result += String.format("<tr><td><a href=\"%s\">%s</a></td><td>%s</td><td>%s</td></tr>\n", groupUrl, group.getId(),
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102 group.getName(), group.getUri());
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103 }
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104 result += "</table>\n";
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105 result += "<p><a href=\"?form=new_group\">Add new group</a></p>\n";
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106 result += "</body>\n</html>";
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107 }
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108 return new StringRepresentation(result, MediaType.TEXT_HTML);
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109 }
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110
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111 /**
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112 * POST creates a new Group.
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113 *
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114 * @return
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115 */
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116 @Post
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117 public Representation doPost(Representation entity) {
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118 logger.debug("AnnotationsUiGroups doPost!");
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119 // TODO: do authentication
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120 Form form = new Form(entity);
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121 String id = form.getFirstValue("id");
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122 String name = form.getFirstValue("name");
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123 if (id == null || id.isEmpty()) {
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124 // invalid id
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125 setStatus(Status.CLIENT_ERROR_BAD_REQUEST);
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126 return null;
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127 }
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128 String gid = makeGroupId(id);
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129 Group newGroup = new Group(gid, null, name);
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130 Actor storedGroup = store.storeActor(newGroup);
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131 gid = storedGroup.getId();
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132 // return 303: see other
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133 setStatus(Status.REDIRECTION_SEE_OTHER);
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134 // go GET URL for this group
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135 Reference groupUrl = this.getReference();
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136 groupUrl.addSegment(gid);
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137 this.getResponse().setLocationRef(groupUrl);
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138 return null;
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139 }
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140
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141 /**
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142 * Returns a group id based on the given id.
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143 *
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144 * @param id
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145 * @return
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146 */
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147 protected String makeGroupId(String id) {
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148 // TODO: should we use different ids?
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149 id = id.replaceAll("\\W", "_");
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150 id = id.toLowerCase();
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151 return id;
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152 }
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153
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154 protected AnnotationStore getAnnotationStore() {
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155 if (store == null) {
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156 store = ((BaseRestlet) getApplication()).getAnnotationStore();
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157 }
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158 return store;
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159 }
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160 }