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0
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1 package de.mpiwg.itgroup.nimanager.persons;
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2
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3 import java.io.UnsupportedEncodingException;
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4 import java.net.URLDecoder;
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5 import java.sql.SQLException;
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6 import java.util.ArrayList;
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7 import java.util.HashMap;
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8 import java.util.List;
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9 import java.util.Map;
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10
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11 import org.json.JSONArray;
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12 import org.openrdf.model.Statement;
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13 import org.openrdf.repository.RepositoryException;
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14 import org.openrdf.repository.RepositoryResult;
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15 import org.restlet.Context;
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16 import org.restlet.data.ClientInfo;
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17 import org.restlet.data.Form;
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18 import org.restlet.data.MediaType;
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19 import org.restlet.data.Status;
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20 import org.restlet.engine.component.ChildContext;
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21 import org.restlet.ext.json.JsonRepresentation;
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22 import org.restlet.representation.Representation;
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23 import org.restlet.representation.StringRepresentation;
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24 import org.restlet.resource.Get;
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25 import org.restlet.resource.Options;
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26 import org.restlet.resource.ServerResource;
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27
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28 import virtuoso.jdbc4.VirtuosoResultSet;
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29 import de.mpiwg.itgroup.nimanager.exceptions.TripleStoreHandlerException;
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30 import de.mpiwg.itgroup.nimanager.owl.TripleStoreHandler;
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31
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32 public class PersonByNameService extends ServerResource {
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33
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34 private String VIRTUOSO_PW;
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35 private String VIRTUOSO_USER;
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36 private String virtuoso_server_url;
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37 private String RELATION_FOR_NAME_SEARCH = "http://xmlns.com/foaf/0.1/name";
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38 private String PERSONS_CONTEXT;
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39 private TripleStoreHandler th;
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40
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41 public PersonByNameService() {
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42 ChildContext context = (ChildContext)Context.getCurrent();
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43 virtuoso_server_url = context.getParameters().getFirstValue("de.mpwig.itgroup.personSearch.virtuoso.url");
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44 VIRTUOSO_PW = context.getParameters().getFirstValue("de.mpwig.itgroup.personSearch.virtuoso.pw");
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45 VIRTUOSO_USER = context.getParameters().getFirstValue("de.mpwig.itgroup.personSearch.virtuoso.user");
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46 PERSONS_CONTEXT = context.getParameters().getFirstValue("de.mpwig.itgroup.personSearch.virtuoso.personsGraphURI");
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47 //th = TripleStoreHandler.getInstance("jdbc:virtuoso://virtuoso.mpiwg-berlin.mpg.de:1111", "dba", "dba");
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48 try {
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49 th = new TripleStoreHandler(virtuoso_server_url, VIRTUOSO_USER, VIRTUOSO_PW);
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50 } catch (TripleStoreHandlerException e) {
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51 // TODO Auto-generated catch block
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52 e.printStackTrace();
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53 }
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54 }
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55
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56 @Options
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57 public void doOptions(Representation entity) {
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58 Form responseHeaders = (Form) getResponse().getAttributes().get(
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59 "org.restlet.http.headers");
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60 if (responseHeaders == null) {
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61 responseHeaders = new Form();
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62 getResponse().getAttributes().put("org.restlet.http.headers",
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63 responseHeaders);
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64 }
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65 responseHeaders.add("Access-Control-Allow-Origin", "*");
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66 responseHeaders.add("Access-Control-Allow-Methods", "POST,OPTIONS,GET");
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67 responseHeaders.add("Access-Control-Allow-Headers", "Content-Type");
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68 responseHeaders.add("Access-Control-Allow-Credentials", "false");
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69 responseHeaders.add("Access-Control-Max-Age", "60");
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70 }
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71
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72 public Representation getTest() {
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73 return new StringRepresentation("TEST");
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74 }
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75
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76 @Get("json")
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77 public Representation getJson() {
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78 Form responseHeaders = (Form) getResponse().getAttributes().get(
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79 "org.restlet.http.headers");
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80 if (responseHeaders == null) {
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81 responseHeaders = new Form();
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82 getResponse().getAttributes().put("org.restlet.http.headers",
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83 responseHeaders);
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84 }
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85 responseHeaders.add("Access-Control-Allow-Origin", "*");
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86
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87 JSONArray resultsJsonArray = new JSONArray();
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88 try {
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89 String id = (String) getRequest().getAttributes().get("name");
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90 id = URLDecoder.decode(id, "utf-8");
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91 String queryPersonWPMD="sparql select DISTINCT * "+
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92 "FROM <"+PERSONS_CONTEXT+"> "+
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93 "FROM <file://newpersonsFromProjects>"+
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94 " FROM <file://personendataWikipedia>"+
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95 " where { " +
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96 "{GRAPH <"+PERSONS_CONTEXT+">" +
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97 "{"+
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98 "?person <"+RELATION_FOR_NAME_SEARCH+"> \""+id+"\"@en."+
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99 " ?ident <http://ontologies.mpiwg-berlin.mpg.de/authorities/namedIdentities/identifies_NamedEntity> ?person."+
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100 " OPTIONAL {?wikipedia crm:P1_is_identified_by ?ident.}"+
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101 " OPTIONAL {?wikipedia <http://dbpedia.org/ontology/birthDate> ?birthDate.}"+
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102 " OPTIONAL {?wikipedia <http://dbpedia.org/ontology/deathDate> ?deathDate.}"
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103 +"}" +
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104 "} UNION {" +
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105 "GRAPH <file://newpersonsFromProjects> {" +
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106 "?person <"+RELATION_FOR_NAME_SEARCH+"> \""+id+"\""+
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107 "}" +
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108 "}" +
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109 "}";
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110 java.sql.Statement smt = th.sqlCon.createStatement();
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111
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112
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113 smt.execute(queryPersonWPMD);
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114 VirtuosoResultSet rs = (VirtuosoResultSet) smt.getResultSet();
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115 Map<String,String> resultMap = new HashMap<String, String>();
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116 while(rs.next()){
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117 if (rs.getString("person")!=null){
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118 resultMap.put("person",rs.getString("person"));
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119 }else {
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120 resultMap.put("person","");
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121 }
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122 if (rs.getString("wikipedia")!=null){
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123 resultMap.put("wikipedia",rs.getString("wikipedia"));
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124 } else {
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125 resultMap.put("wikipedia","");
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126 }
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127 if (rs.getString("birthDate")!=null){
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128 resultMap.put("birthDate",rs.getString("birthDate"));
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129 } else {
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130 resultMap.put("birthDate","");
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131 }
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132 if (rs.getString("deathDate")!=null){
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133 resultMap.put("deathDate",rs.getString("deathDate"));
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134 } else {
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135 resultMap.put("deathDate","");
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136 }
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137 resultMap.put("name",id);
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138 resultsJsonArray.put(resultMap);
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139 }
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140
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141 return new JsonRepresentation(resultsJsonArray);
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142
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143 } catch (UnsupportedEncodingException e) {
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144 e.printStackTrace();
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145 setStatus(Status.SERVER_ERROR_INTERNAL, "REPOSITORY ERROR");
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146 return new JsonRepresentation(new JSONArray());
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147
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148 } catch (SQLException e) {
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149
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150 e.printStackTrace();
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151 setStatus(Status.SERVER_ERROR_INTERNAL, "REPOSITORY SQL ERROR");
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152 return new JsonRepresentation(new JSONArray());
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153
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154 }
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155
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156
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157 }
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158
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159 @Get("xml")
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160 public Representation getXML() {
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161 List<MediaType> supported=new ArrayList<MediaType>();
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162 supported.add(MediaType.APPLICATION_JSON);
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163
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164 ClientInfo ci = getRequest().getClientInfo();
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165
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166 if(ci==null){ //don't know why this can happen, but sometimes does
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167 setStatus(Status.SERVER_ERROR_INTERNAL);
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168 return null;
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169 }
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170 MediaType types = getRequest().getClientInfo().getPreferredMediaType(supported);
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171 if (types.equals(MediaType.APPLICATION_JSON))
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172 return getJson();
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173
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174 try {
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175 String id = (String) getRequest().getAttributes().get("name");
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176 id = URLDecoder.decode(id, "utf-8");
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177 RepositoryResult<Statement> statements = th.getStatements(null,
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178 th.createUri(RELATION_FOR_NAME_SEARCH),
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179 th.createLiteral(id, "en"), PERSONS_CONTEXT);
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180 String ret = "<results>";
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181 while (statements.hasNext()) {
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182 Statement statement = statements.next();
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183 ret += "<result subj=\"" + statement.getSubject().stringValue()
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184 + "\"/>";
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185 }
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186 ret += "</results>";
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187
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188 return new StringRepresentation(ret, MediaType.TEXT_XML);
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189
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190 } catch (RepositoryException e) {
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191
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192 e.printStackTrace();
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193 setStatus(Status.SERVER_ERROR_INTERNAL, "REPOSITORY ERROR");
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194 return new StringRepresentation(
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195 "<xml><error>Repository Error</error></xml>",
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196 MediaType.TEXT_XML);
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197 } catch (UnsupportedEncodingException e) {
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198 e.printStackTrace();
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199 setStatus(Status.SERVER_ERROR_INTERNAL, "REPOSITORY ERROR");
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200 return new StringRepresentation(
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201 "<xml><error>Unsupported encoding</error></xml>",
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202 MediaType.TEXT_XML);
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203 }
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204 }
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205
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206 @Get("html")
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207 public Representation getHTML() {
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208
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209 List<MediaType> supported=new ArrayList<MediaType>();
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210 supported.add(MediaType.APPLICATION_JSON);
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211
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212 ClientInfo ci = getRequest().getClientInfo();
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213
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214 if(ci==null){ //don't know why this can happen, but sometimes does
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215 setStatus(Status.SERVER_ERROR_INTERNAL);
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216 return null;
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217 }
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218 MediaType types = ci.getPreferredMediaType(supported);
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219 if (types!=null)
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220 if (types.equals(MediaType.APPLICATION_JSON))
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221 return getJson();
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222
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223 Form responseHeaders = (Form) getResponse().getAttributes().get(
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224 "org.restlet.http.headers");
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225 if (responseHeaders == null) {
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226 responseHeaders = new Form();
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227 getResponse().getAttributes().put("org.restlet.http.headers",
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228 responseHeaders);
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229 }
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230 responseHeaders.add("Access-Control-Allow-Origin", "*");
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231 try {
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232 String id = (String) getRequest().getAttributes().get("name");
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233 id = URLDecoder.decode(id, "utf-8");
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234 // RepositoryResult<Statement> statements = th.getStatements(null,
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235 // th.createUri(RELATION_FOR_NAME_SEARCH),
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236 // th.createLiteral(id, "en"), PERSONS_CONTEXT);
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237 String ret = "<html><body><div id=\"resultNames\">";
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238 String queryPersonWPMD="sparql select * "+
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239 "FROM <"+PERSONS_CONTEXT+"> "+
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240 " FROM <file://personendataWikipedia>"+
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241 " where { "+
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242 " ?person <"+RELATION_FOR_NAME_SEARCH+"> \""+id+"\"@en."+
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243 " ?ident <http://ontologies.mpiwg-berlin.mpg.de/authorities/namedIdentities/identifies_NamedEntity> ?person."+
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244 " ?wikipedia crm:P1_is_identified_by ?ident."+
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245 " ?wikipedia <http://dbpedia.org/ontology/birthDate> ?birthDate."+
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246 " ?wikipedia <http://dbpedia.org/ontology/deathDate> ?deathDate."
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247 +"}";
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248 java.sql.Statement smt = th.sqlCon.createStatement();
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249
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250
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251 smt.execute(queryPersonWPMD);
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252 VirtuosoResultSet rs = (VirtuosoResultSet) smt.getResultSet();
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253
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254 while(rs.next()){
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255 String person= rs.getString("person");
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256 String wikipedia= rs.getString("wikipedia");
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257 String bd= rs.getString("birthDate");
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258 String dd= rs.getString("deathDate");
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259
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260 ret+=String.format("<div><a href=\"%s\">%s (%s-%s)</a></div>",wikipedia,id,bd,dd);
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261 }
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262
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263
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264 // while (statements.hasNext()) {
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265 // Statement statement = statements.next();
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266 //
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267 //
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268 //
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269 //
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270 //
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271 // //ret +=String.format("<div><a href=\"../id/%s\">%s</a></div>",URLEncoder.encode(statement.getSubject().stringValue()),statement.getSubject().stringValue() );
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272 // ret +=String.format("<div><a href=\"%s\">%s</a></div>",statement.getSubject().stringValue(),statement.getSubject().stringValue() );
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273 //
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274 // }
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275
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276 ret += "</div></body></html>";
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277
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278 return new StringRepresentation(ret, MediaType.TEXT_HTML);
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279
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280 // } catch (RepositoryException e) {
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281 //
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282 // e.printStackTrace();
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283 // setStatus(Status.SERVER_ERROR_INTERNAL, "REPOSITORY ERROR");
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284 // return new StringRepresentation(
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285 // "<xml><error>Repository Error</error></xml>",
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286 // MediaType.TEXT_HTML);
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287 } catch (UnsupportedEncodingException e) {
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288 e.printStackTrace();
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289 setStatus(Status.SERVER_ERROR_INTERNAL, "REPOSITORY ERROR");
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290 return new StringRepresentation(
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291 "<xml><error>Unsupported encoding</error></xml>",
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292 MediaType.TEXT_HTML);
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293 } catch (SQLException e) {
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294
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295 e.printStackTrace();
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296 setStatus(Status.SERVER_ERROR_INTERNAL, "REPOSITORY SQL ERROR");
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297 return new StringRepresentation(
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298 "<xml><error>Unsupported encoding</error></xml>",
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299 MediaType.TEXT_HTML);
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300 }
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301 }
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302
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303 }
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