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7
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1 //TODO: handle XML-Post des Annoteaprotocolls http://www.w3.org/2001/Annotea/User/Protocol.html
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2
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3 package de.mpiwg.itgroup.annotationManager.restlet;
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4
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5 import java.io.UnsupportedEncodingException;
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6 import java.net.URLDecoder;
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7 import java.net.URLEncoder;
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8 import java.util.ArrayList;
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9 import java.util.List;
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10 import java.util.regex.Matcher;
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11 import java.util.regex.Pattern;
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12
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13 import org.apache.log4j.Logger;
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14 import org.json.JSONArray;
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15 import org.json.JSONException;
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16 import org.json.JSONObject;
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17 import org.restlet.Context;
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18 import org.restlet.data.ClientInfo;
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19 import org.restlet.data.Form;
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20 import org.restlet.data.MediaType;
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21 import org.restlet.data.Status;
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22 import org.restlet.ext.json.JsonRepresentation;
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23 import org.restlet.representation.Representation;
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24 import org.restlet.representation.StringRepresentation;
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25 import org.restlet.resource.Get;
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26 import org.restlet.resource.Options;
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27 import org.restlet.resource.ServerResource;
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28 import org.restlet.security.User;
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29
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30 import de.mpiwg.itgroup.annotationManager.Constants.NS;
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31 import de.mpiwg.itgroup.annotationManager.Errors.TripleStoreSearchError;
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17
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32 import de.mpiwg.itgroup.annotationManager.RDFHandling.Annotation;
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33 import de.mpiwg.itgroup.annotationManager.RDFHandling.RDFSearcher;
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34 import de.mpiwg.itgroup.annotationManager.drupal.AnnotationHandler;
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35 import de.mpiwg.itgroup.annotationManager.drupal.UnknowUserException;
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36 import de.mpiwg.itgroup.triplestoremanager.exceptions.TripleStoreHandlerException;
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37
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38
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39 public class SearchAnnotations extends ServerResource {
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40
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41 private Logger logger = Logger.getRootLogger();
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42
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43
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44
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45 @Options
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46 public void doOptions(Representation entity) {
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47 Form responseHeaders = (Form) getResponse().getAttributes().get(
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48 "org.restlet.http.headers");
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49 if (responseHeaders == null) {
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50 responseHeaders = new Form();
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51 getResponse().getAttributes().put("org.restlet.http.headers",
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52 responseHeaders);
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53 }
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54 Form requestHeaders = (Form) getRequest().getAttributes().get("org.restlet.http.headers");
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55 String origin = requestHeaders.getFirstValue("Origin", true);
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56 if (origin == null) {
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57 responseHeaders.add("Access-Control-Allow-Origin", "*");
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58 } else {
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59 responseHeaders.add("Access-Control-Allow-Origin", origin);
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60 }
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61 responseHeaders.add("Access-Control-Allow-Methods", "OPTIONS,GET");
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62 String allowHeaders = requestHeaders.getFirstValue("Access-Control-Request-Headers", true);
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63 if (allowHeaders != null) {
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64 responseHeaders.add("Access-Control-Allow-Headers", allowHeaders);
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65 }
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66 //responseHeaders.add("Access-Control-Allow-Headers", "X-Requested-With, Content-Type, X-Annotator-Account-Id, X-Annotator-User-Id, X-Annotator-Auth-Token-Valid-Until, X-Annotator-Auth-Token");
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67 responseHeaders.add("Access-Control-Allow-Credentials", "true");
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68 responseHeaders.add("Access-Control-Max-Age", "60");
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69 }
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70
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71 @Get("html")
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72 public Representation doGetHTML(Representation entity){
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73
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74 doOptions(entity);
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75 Form form = getRequest().getResourceRef().getQueryAsForm();
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76 String uri = form.getFirstValue("uri");
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77 String user = form.getFirstValue("user");
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78
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79 String limit=form.getFirstValue("limit");
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80 String offset=form.getFirstValue("offset");
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81
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82 try {
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83 if (uri!=null){
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84 uri = URLDecoder.decode(uri, "utf-8");
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85 }
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86 } catch (UnsupportedEncodingException e1) {
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87 e1.printStackTrace();
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88 setStatus(Status.CLIENT_ERROR_NOT_ACCEPTABLE);
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89 return null;
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90 }
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91
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92 RDFSearcher searcher = new RDFSearcher("file:///annotations"); //TODO should ge into config file
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93
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94 String retString="<html><body><table>";
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95 String lineFormat="<tr><td><a href=\"%s\">%s</a></td>" +
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96 "<td><a href=\"%s\">%s</a></td><td>%s</td><td>%s</td><td><a href=\"%s\">%s</a></td><td><a href=\"%s\">%s</a></td></div>";
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97 try {
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98
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99 List<Annotation> annots=searcher.searchByUriUser(uri,user,limit,offset);
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100
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101 for (Annotation annot:annots){
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102
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103
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104 RestServer restServer = (RestServer) getApplication();
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105 String userName=restServer.getUserNameFromLdap(annot.creator);
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106 List<String> xpointer = new ArrayList<String>();
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107
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108 if (annot.xpointers==null || annot.xpointers.size()==0)
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109 retString+=String.format(lineFormat, userName,userName,annot.url,annot.url,annot.time,annot.text,annot.xpointer,annot.xpointer,annot.getAnnotationUri(),annot.getAnnotationUri());
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110 else {
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111 for(String xpointerString:annot.xpointers){
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112 retString+=String.format(lineFormat, userName,userName,annot.url,annot.url,annot.time,annot.text,xpointerString,xpointerString,annot.getAnnotationUri(),annot.getAnnotationUri());
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113 }
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114 }
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115
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116 }
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117 } catch (TripleStoreHandlerException e) {
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118 // TODO Auto-generated catch block
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119 e.printStackTrace();
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120 setStatus(Status.SERVER_ERROR_INTERNAL,"TripleStoreHandler Error");
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121 return null;
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122 } catch (TripleStoreSearchError e) {
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123 // TODO Auto-generated catch block
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124 e.printStackTrace();
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125 setStatus(Status.SERVER_ERROR_INTERNAL,"TripleStoreSearch Error");
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126 return null;
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127 }
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128
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129 retString+="</table></body></html>";
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130
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131 logger.debug("sending:");
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132 logger.debug(retString);
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133 return new StringRepresentation(retString,MediaType.TEXT_HTML);
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134 }
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135
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136 /**
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137 * Erzeugt aus einer Annotation, das f�r den Annotator notwendige JSON-Format
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138 * @param annot
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139 * @return
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140 */
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141 public JSONObject annot2AnnotatorJSON(Annotation annot){
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142 JSONObject jo = new JSONObject();
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143 try {
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144 jo.put("text", annot.text);
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145 jo.put("uri",annot.url);
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146
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147 JSONObject userObject= new JSONObject();
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148 userObject.put("id",annot.creator);
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149
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150 RestServer restServer = (RestServer) getApplication();
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151
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152 String userID= annot.creator;
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153 if (userID.startsWith(NS.MPIWG_PERSONS_URL)){
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154 userID=userID.replace(NS.MPIWG_PERSONS_URL, ""); //entferne NAMESPACE
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155 }
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156 String userName=restServer.getUserNameFromLdap(userID);
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157 userObject.put("name",userName);
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158
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159 jo.put("user",userObject);
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160
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161 List<String> xpointer = new ArrayList<String>();
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162
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163 if (annot.xpointers==null || annot.xpointers.size()==0)
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164 xpointer.add(annot.xpointer);
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165 else {
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166 for(String xpointerString:annot.xpointers){
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167 xpointer.add(xpointerString);
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168 }
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169 }
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170 jo.put("ranges", transformToRanges(xpointer));
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171 jo.put("id", annot.getAnnotationUri());
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172 return jo;
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173 } catch (JSONException e) {
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174 // TODO Auto-generated catch block
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175 e.printStackTrace();
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176 return null;
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177 }
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178 }
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179
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180 @Get("json")
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181 public Representation doGetJSON(Representation entity){
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182
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183 doOptions(entity);
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184 Form form = getRequest().getResourceRef().getQueryAsForm();
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185 String uri = form.getFirstValue("uri");
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186 String user = form.getFirstValue("user");
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187
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188 String limit=form.getFirstValue("limit");
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189 String offset=form.getFirstValue("offset");
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190
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191
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192 //
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193 RDFSearcher searcher = new RDFSearcher("file:///annotations"); //TODO should ge into config file
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194
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195 JSONArray ja;
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196 try {
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197
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198 List<Annotation> annots=searcher.searchByUriUser(uri,user,limit,offset);
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199
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200 ja = new JSONArray();
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201 for (Annotation annot:annots){
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202 // JSONObject jo = new JSONObject();
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203 // jo.put("text", annot.text);
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204 // jo.put("uri",annot.url);
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205 //
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206 // JSONObject userObject= new JSONObject();
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207 // userObject.put("id",annot.creator);
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208 //
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209 // RestServer restServer = (RestServer) getApplication();
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210 //
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211 // String userID= annot.creator;
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212 // if (userID.startsWith(NS.MPIWG_PERSONS)){
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213 // userID=userID.replace(NS.MPIWG_PERSONS, ""); //entferne NAMESPACE
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214 // }
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215 // String userName=restServer.getUserNameFromLdap(userID);
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216 // userObject.put("name",userName);
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217 //
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218 // jo.put("user",userObject);
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219 //
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220 // List<String> xpointer = new ArrayList<String>();
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221 //
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222 // if (annot.xpointers==null || annot.xpointers.size()==0)
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223 // xpointer.add(annot.xpointer);
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224 // else {
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225 // for(String xpointerString:annot.xpointers){
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226 // xpointer.add(xpointerString);
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227 // }
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228 // }
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229 // jo.put("ranges", transformToRanges(xpointer));
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230 JSONObject jo = annot2AnnotatorJSON(annot);
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231 if (jo!=null){
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232 ja.put(annot2AnnotatorJSON(annot));
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233 } else {
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234 setStatus(Status.SERVER_ERROR_INTERNAL,"JSon Error");
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235 return null;
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236 }
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237 }
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238 } catch (TripleStoreHandlerException e) {
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239 // TODO Auto-generated catch block
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240 e.printStackTrace();
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241 setStatus(Status.SERVER_ERROR_INTERNAL,"TripleStoreHandler Error");
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242 return null;
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243 } catch (TripleStoreSearchError e) {
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244 // TODO Auto-generated catch block
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245 e.printStackTrace();
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246 setStatus(Status.SERVER_ERROR_INTERNAL,"TripleStoreSearch Error");
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247 return null;
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248 }
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249
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250 JSONObject result = new JSONObject();
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251 try {
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252 result.put("rows",ja);
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253 result.put("total",ja.length());
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254 } catch (JSONException e) {
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255 // TODO Auto-generated catch block
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256 e.printStackTrace();
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257 setStatus(Status.SERVER_ERROR_INTERNAL,"JSon Error");
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258 return null;
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259 }
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260
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261 logger.debug("sending:");
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262 logger.debug(result);
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263 return new JsonRepresentation(result);
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264 }
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265
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266 private JSONArray transformToRanges(List<String> xpointers) {
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267
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268 JSONArray ja = new JSONArray();
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269
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270 Pattern rg = Pattern.compile("#xpointer\\(start-point\\(string-range\\(\"([^\"]*)\",([^,]*),1\\)\\)/range-to\\(end-point\\(string-range\\(\"([^\"]*)\",([^,]*),1\\)\\)\\)\\)");
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271 Pattern rg1 = Pattern.compile("#xpointer\\(start-point\\(string-range\\(\"([^\"]*)\",([^,]*),1\\)\\)\\)");
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272
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273
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274
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275 try {
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276 for(String xpointer:xpointers){
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277 String decoded =URLDecoder.decode(xpointer,"utf-8");
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278 Matcher m=rg.matcher(decoded);
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279
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280 if (m.find()){
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281 {
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282 JSONObject jo = new JSONObject();
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283 jo.put("start", m.group(1));
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284 jo.put("startOffset", m.group(2));
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285 jo.put("end", m.group(3));
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286 jo.put("endOffset", m.group(4));
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287 ja.put(jo);
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288 }
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289 }
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290 m=rg1.matcher(xpointer);
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291 if (m.find()){
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292 JSONObject jo = new JSONObject();
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293 jo.put("start", m.group(1));
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294 jo.put("startOffset", m.group(2));
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295
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296 ja.put(jo);
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297 }
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298
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299
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300 }
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301 } catch (JSONException e) {
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302 // TODO Auto-generated catch block
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303 e.printStackTrace();
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304 } catch (UnsupportedEncodingException e) {
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305 // TODO Auto-generated catch block
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306 e.printStackTrace();
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307 }
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308
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309
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310 return ja;
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311 }
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312
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313
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314
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315 /**
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316 *
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317 * @param entity should contain a form with the parameters "username", "password", "xpointer","text","uri","type"
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318 *
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319 * username,password is optional, if not given BasicAuthentification is used.
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320 *
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321 *
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322 *
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323 * If username given as a URI, the username will be transformed to an URI, username will be added to the MPIWG namespace defined in de.mpiwg.itgroup.annotationManager.Constants.NS
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324 *
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325 * @return
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326 */
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17
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327 protected Annotation handleForm(Representation entity) {
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328 Annotation annot;
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7
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329 Form form = new Form(entity);
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330 String username = form.getValues("username");
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331 String mode = form.getValues("mode");
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332 String password = form.getValues("password");
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333 String xpointer = form.getValues("xpointer");
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334 String text = form.getValues("text");
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335 String title = form.getValues("title");
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336 String url = form.getValues("url");
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337 String type = form.getValues("type");
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338 RestServer restServer = (RestServer) getApplication();
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339
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340 // falls user and password nicht null sind:
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341 User userFromForm = null;
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342 if (username != null && password != null) {
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343 if (restServer.authenticate(username, password, getRequest())) {
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344 userFromForm = new User(username);
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345 }
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346 }
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347 User authUser = null;
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348
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349 if (userFromForm == null) {
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350 authUser = handleBasicAuthentification(entity);
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351 }
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352
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353 // weder BasicAuth noch FormAuth
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354 if (authUser == null && userFromForm == null) {
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355 setStatus(Status.CLIENT_ERROR_FORBIDDEN);
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356 return null;
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357 }
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358
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359 if (userFromForm != null) {
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360 username = userFromForm.getIdentifier();
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361 } else {
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362 username = authUser.getIdentifier();
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363 }
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364
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365 //username should be a URI, if not it will set to the MPIWG namespace defined in de.mpiwg.itgroup.annotationManager.Constants.NS
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366 String usernameOrig=username;
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367 if (!username.startsWith("http"))
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26
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368 username=NS.MPIWG_PERSONS_URL+username;
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7
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369
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370 if (mode.equals("complexAnnotation")){// Annotation mit text in externer ressource
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371
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372 Context context = getContext();
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373 String drupalPath = context.getParameters().getFirstValue("de.mpiwg.itgroup.annotationManager.drupalServer");
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374
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375
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376 AnnotationHandler ah = new AnnotationHandler(drupalPath);
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377 JSONObject newAnnot;
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378 try {
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379 newAnnot = ah.createAnnotation(title, text, usernameOrig, password);
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380 } catch (UnknowUserException e1) {
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381 setStatus(Status.CLIENT_ERROR_FORBIDDEN);
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382 e1.printStackTrace();
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383 return null;
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384 }
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385 try {
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17
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386 annot= new Annotation(xpointer, username, null, text, type, newAnnot.getString("node_uri"));
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7
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387 } catch (JSONException e) {
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388 // TODO Auto-generated catch block
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389 e.printStackTrace();
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390 setStatus(Status.SERVER_ERROR_INTERNAL);
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391 return null;
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392 }
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393 } else
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17
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394 annot = new Annotation(xpointer, username, null, text,
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7
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395 type, url);
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396 return annot;
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397 }
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398
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399 private User handleBasicAuthentification(Representation entity) {
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400 RestServer restServer = (RestServer) getApplication();
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401 if (!restServer.authenticate(getRequest(), getResponse())) {
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402 // Not authenticated
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403 return null;
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404 }
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405
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406 ClientInfo ci = getRequest().getClientInfo();
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407 logger.debug(ci);
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408 return getRequest().getClientInfo().getUser();
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409
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410 }
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411
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412 /**
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413 * using a minimal annotation format based on the annotea specification
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414 *
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415 * @param jo
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416 * must contain xpointer, text,url,type and can contain a
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417 * username, if not the username form the authentification will
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418 * be used.
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419 * @param authUser
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420 * user object
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421 * The username will be transformed to an URI if not given already as URI, if not it will set to the MPIWG namespace defined in de.mpiwg.itgroup.annotationManager.Constants.NS
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422
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423 * @return
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424 * @throws JSONException
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425 */
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426 public Annotation handleAnnotea(JSONObject jo, Representation entity)
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427 throws JSONException {
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428
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429 User authUser = handleBasicAuthentification(entity);
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430 String username = jo.getString("username"); // not required, if no
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431 // username given authuser
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432 // will be used.
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433 String xpointer = jo.getString("xpointer");
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434 String text = null;
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435 if (jo.has("text"))
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436 text = jo.getString("text");
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437
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438 String url = null;
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439 if (jo.has("url"))
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440 url = jo.getString("url");
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441
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442 String type = null;
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443 if (jo.has("type"))
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444 type = jo.getString("type");
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445
|
|
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446 if (username == null)
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|
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447 username = authUser.getIdentifier();
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|
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448
|
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|
449 //username should be a URI, if not it will set to the MPIWG namespace defined in de.mpiwg.itgroup.annotationManager.Constants.NS
|
|
|
450 if (!username.startsWith("http"))
|
|
26
|
451 username=NS.MPIWG_PERSONS_URL+username;
|
|
7
|
452
|
|
17
|
453 return new Annotation(xpointer, username, null, text, type, url);
|
|
7
|
454 }
|
|
|
455
|
|
|
456 /**
|
|
|
457 * uses the specification from the annotator project.
|
|
|
458 *
|
|
|
459 * @see{https://github.com/okfn/annotator/wiki/Annotation-format} The user
|
|
|
460 * object must
|
|
|
461 * contain an
|
|
|
462 * id and
|
|
|
463 * password or
|
|
|
464 * basic
|
|
|
465 * authentification
|
|
|
466 * is used.
|
|
|
467 * The username will be transformed to an URI if not given already as URI, if not it will set to the MPIWG namespace defined in de.mpiwg.itgroup.annotationManager.Constants.NS
|
|
|
468 * @param jo
|
|
|
469 * @param authUser
|
|
|
470 * @return
|
|
|
471 * @throws JSONException
|
|
|
472 */
|
|
17
|
473 public Annotation handleAnnotatorSchema(JSONObject jo,
|
|
7
|
474 Representation entity) throws JSONException {
|
|
17
|
475 Annotation annot;
|
|
7
|
476 String url = jo.getString("uri");
|
|
|
477 String text = jo.getString("text");
|
|
|
478
|
|
|
479 String username = null;
|
|
|
480 if (jo.has("user")) { // not required, if no username given authuser
|
|
|
481 // will be used otherwise username and password
|
|
|
482 // has to be submitted
|
|
|
483 JSONObject user = jo.getJSONObject("user");
|
|
|
484 if (user.has("id")) {
|
|
|
485 username = user.getString("id");
|
|
|
486 if(!user.has("password")){
|
|
|
487 User authUser = handleBasicAuthentification(entity);
|
|
|
488 if (authUser==null){
|
|
|
489 setStatus(Status.CLIENT_ERROR_FORBIDDEN);
|
|
|
490 return null;
|
|
|
491 }
|
|
|
492 username = authUser.getIdentifier();
|
|
|
493 } else {
|
|
|
494 String password = user.getString("password");
|
|
|
495 if (!((RestServer) getApplication()).authenticate(username,
|
|
|
496 password, getRequest())) {
|
|
|
497 setStatus(Status.CLIENT_ERROR_FORBIDDEN);
|
|
|
498 return null;
|
|
|
499 }
|
|
|
500 }
|
|
|
501 }
|
|
|
502
|
|
|
503 } else {
|
|
|
504 User authUser = handleBasicAuthentification(entity);
|
|
|
505 if (authUser == null) {
|
|
|
506 setStatus(Status.CLIENT_ERROR_FORBIDDEN);
|
|
|
507 return null;
|
|
|
508 }
|
|
|
509 username = authUser.getIdentifier();
|
|
|
510 }
|
|
|
511
|
|
|
512 String xpointer;
|
|
|
513 if (jo.has("ranges")) {
|
|
|
514 JSONObject ranges = jo.getJSONArray("ranges").getJSONObject(0);
|
|
|
515 String start = ranges.getString("start");
|
|
|
516 String end = ranges.getString("end");
|
|
|
517 String startOffset = ranges.getString("startOffset");
|
|
|
518 String endOffset = ranges.getString("endOffset");
|
|
|
519
|
|
|
520 try {
|
|
|
521 xpointer = url+"#"+
|
|
|
522 URLEncoder.encode(String.format(
|
|
|
523 "xpointer(start-point(string-range(\"%s\",%s,1))/range-to(end-point(string-range(\"%s\",%s,1))))",
|
|
|
524 start, startOffset, end, endOffset),"utf-8");
|
|
|
525 } catch (UnsupportedEncodingException e) {
|
|
|
526 e.printStackTrace();
|
|
|
527 setStatus(Status.SERVER_ERROR_INTERNAL);
|
|
|
528 return null;
|
|
|
529 }
|
|
|
530 } else {
|
|
|
531 xpointer = url;
|
|
|
532 }
|
|
|
533
|
|
|
534 //username should be a URI, if not it will set to the MPIWG namespace defined in de.mpiwg.itgroup.annotationManager.Constants.NS
|
|
|
535 if (!username.startsWith("http"))
|
|
26
|
536 username=NS.MPIWG_PERSONS_URL+username;
|
|
7
|
537
|
|
17
|
538 return new Annotation(xpointer, username, null, text, null);
|
|
7
|
539 }
|
|
|
540
|
|
|
541 }
|
