1 | package jp.ac.osaka_u.sanken.sparql;
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2 |
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3 | import java.io.BufferedReader;
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4 | import java.io.InputStreamReader;
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5 | import java.net.HttpURLConnection;
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6 | import java.net.URL;
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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.HashMap;
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10 | import java.util.List;
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11 | import java.util.Map;
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12 |
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13 | import com.hp.hpl.jena.query.Query;
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14 | import com.hp.hpl.jena.query.QueryExecution;
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15 | import com.hp.hpl.jena.query.QueryExecutionFactory;
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16 | import com.hp.hpl.jena.query.QueryFactory;
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17 | import com.hp.hpl.jena.query.QuerySolution;
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18 | import com.hp.hpl.jena.query.ResultSet;
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19 | import com.hp.hpl.jena.query.ResultSetFactory;
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20 | import com.hp.hpl.jena.rdf.model.RDFNode;
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21 | import com.hp.hpl.jena.rdf.model.impl.ResourceImpl;
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22 | /**
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23 | * Sparql縺ィ縺ョ繝��繧ソ
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24 | * @author kato
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25 | *
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26 | */
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27 | public class PlainSparqlAccessor implements ThreadedSparqlAccessor {
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28 |
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29 | private EndpointSettings setting;
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30 |
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31 | private SparqlQueryListener queryListener;
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32 |
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33 | public PlainSparqlAccessor(EndpointSettings endpoint, SparqlQueryListener queryListener){
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34 | this.queryListener = queryListener;
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35 |
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36 | this.setting = endpoint;
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37 | }
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38 |
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39 | public PlainSparqlAccessor(EndpointSettings endpoint){
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40 | this(endpoint, null);
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41 | }
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42 |
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43 |
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44 | public EndpointSettings getSetting(){
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45 | return this.setting;
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46 | }
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47 | /**
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48 | * query繧貞娼縺�※邨先棡繧定ソ斐☆
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49 | * @param query
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50 | * @return
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51 | */
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52 | protected QueryExecution makeQuery(String queryString){
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53 | System.out.println("query:["+queryString+"]");
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54 | Query query = QueryFactory.create(queryString);
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55 | QueryExecution qe = QueryExecutionFactory.sparqlService(getSetting().getEndpoint(), query);
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56 |
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57 | return qe;
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58 | }
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59 |
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60 | /**
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61 | * Thread繧定オキ蜍輔@縺ヲquery螳溯。後r陦後≧縲らオ先棡縺ッlistener縺ォ霑斐k縲� |
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62 | * @param queryString query
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63 | * @param resultListener 邨先棡繧貞女縺大叙繧詰istener
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64 | */
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65 | public boolean executeQuery(String queryString, SparqlResultListener resultListener){
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66 |
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67 | Thread thread = new QueryThread(queryString, resultListener){
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68 | public void run(){
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69 | try {
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70 | getSparqlResultListener().resultReceived(new SparqlResultSet(executeQuery(getQueryString())));
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71 | } catch (Exception e) {
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72 | throw new RuntimeException(e);
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73 | }
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74 | }
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75 | };
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76 | thread.setUncaughtExceptionHandler(resultListener);
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77 | thread.start();
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78 | return true;
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79 | }
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80 |
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81 |
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82 | /**
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83 | * query螳溯。後r陦後≧縲らオ先棡縺ッ謌サ繧雁、縺ィ縺励※霑斐k縲� |
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84 | * @param queryString
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85 | * @return
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86 | * @throws Exception
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87 | */
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88 | public List<Map<String, RDFNode>> executeQuery(String queryString) throws Exception{
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89 |
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90 | List<Map<String, RDFNode>> ret = new ArrayList<Map<String, RDFNode>>();
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91 | QueryExecution qe = makeQuery(queryString);
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92 |
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93 | if (qe == null){
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94 | throw new Exception("Can't connect to endpoint");
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95 | }
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96 |
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97 | try {
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98 | // System.out.println("query:"+queryString);
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99 | if (this.queryListener != null){
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100 | queryListener.sparqlExecuted(queryString);
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101 | }
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102 | ResultSet results = null;
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103 | try {
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104 | if (!setting.isUseCustomParam()){
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105 | results = qe.execSelect();
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106 | } else {
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107 | results = customQuery(queryString);
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108 | }
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109 | List<String> keys = results.getResultVars();
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110 | while(results.hasNext()){
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111 | QuerySolution result = results.next();
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112 | HashMap<String, RDFNode> map = new HashMap<String, RDFNode>();
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113 | for (String key : keys){
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114 | RDFNode node = result.get(key);
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115 | map.put(key, node);
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116 | }
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117 | ret.add(map);
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118 | }
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119 | } catch(Exception e){
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120 | e.printStackTrace();
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121 | // results = customQuery(queryString);
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122 | }
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123 | } catch(Exception e){
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124 | e.printStackTrace();
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125 | throw e;
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126 | } finally {
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127 | qe.close();
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128 | }
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129 |
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130 | return ret;
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131 | }
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132 |
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133 | private ResultSet customQuery(String query) throws Exception {
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134 |
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135 | URL url = new URL(this.setting.getEndpoint() + "?" +setting.getQueryKey() + "=" + URLEncoder.encode(query, setting.getEncoding()) + "&" + setting.getOption());//POST縺吶k繝��繧ソ
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136 | HttpURLConnection conn = (HttpURLConnection)url.openConnection();
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137 | conn.setRequestProperty("Accept-Language", "ja");// 繝倥ャ繝繧定ィュ螳� |
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138 | conn.setRequestProperty("Referer", setting.getEndpoint());// 繝倥ャ繝繧定ィュ螳� |
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139 |
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140 | int resultType = setting.getResultType();
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141 | ResultSet ret = null;
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142 |
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143 | if (resultType == EndpointSettings.RESULT_TYPE_JSON){
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144 | ret = ResultSetFactory.fromJSON(conn.getInputStream());
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145 | } else if (resultType == EndpointSettings.RESULT_TYPE_XML){
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146 | ret = ResultSetFactory.fromXML(conn.getInputStream());
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147 | } else if (resultType == EndpointSettings.RESULT_TYPE_SSE){
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148 | ret = ResultSetFactory.fromSSE(conn.getInputStream());
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149 | } else if (resultType == EndpointSettings.RESULT_TYPE_TSV){
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150 | ret = ResultSetFactory.fromTSV(conn.getInputStream());
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151 | }
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152 | conn.disconnect();
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153 |
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154 | return ret;
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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 | * word譁�ュ怜�繧貞性繧subject繧貞叙蠕励@縺ヲ霑斐☆
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160 | * @param word
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161 | * @param fullMatch 螳悟�荳閾エ讀懃エ「縺� |
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162 | * @param limit 讀懃エ「譛螟ァ謨ー
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163 | * @param offset 讀懃エ「繧ェ繝輔そ繝�ヨ
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164 | * @param type 讀懃エ「蟇セ雎。遞ョ蛻・
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165 | * @return
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166 | * @throws Exception
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167 | */
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168 | public SparqlResultSet findSubject(String word, boolean fullMatch, Integer limit, Integer offset, int type, String[] propList) throws Exception{
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169 | String query;
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170 | word = word.replace(" ", "%20");
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171 |
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172 | if (!fullMatch){
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173 | if (type == PlainSparqlAccessor.FIND_TARGET_SUBJECT){
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174 | query =
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175 | "select distinct ?s where {\n" +
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176 | "?s <http://www.w3.org/2000/01/rdf-schema#label> ?o \n" +
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177 | "FILTER(regex(str(?s), \""+word+"\", \"m\"))\n" +
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178 | "}";
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179 | } else if (type == PlainSparqlAccessor.FIND_TARGET_OBJECT){
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180 | query =
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181 | "select distinct ?s where {\n" +
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182 | "?s ?p ?o \n" +
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183 | "FILTER(regex(str(?o), \""+word+"\", \"m\"))\n" +
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184 | "}";
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185 | } else if (type == PlainSparqlAccessor.FIND_TARGET_SPECIFIC_OBJECT){
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186 | query =
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187 | "select distinct ?s where {\n";
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188 | query += getPropertySparql(propList);
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189 | query += "FILTER(regex(str(?o), \""+word+"\", \"m\"))\n" +
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190 | "}";
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191 | } else {
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192 | // TODO
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193 | query =
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194 | "select distinct ?s where {\n";
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195 | query += getPropertySparql(propList);
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196 | query += "FILTER(regex(str(?o), \""+word+"\", \"m\"))\n" +
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197 | "}";
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198 | }
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199 | } else {
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200 | if (type == PlainSparqlAccessor.FIND_TARGET_OBJECT){
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201 | query =
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202 | "select distinct ?s where \n{" +
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203 | "{?s ?p \""+word+"\"} UNION \n" +
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204 | "{?s ?p \""+word+"\"@en} UNION \n" +
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205 | "{?s ?p \""+word+"\"@ja} ";
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206 | String[] namespaces = setting.getNamespaceList();
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207 | if (namespaces != null && namespaces.length > 0){
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208 | query += "UNION \n";
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209 | }
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210 | for (int i=0; i<namespaces.length; i++){
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211 | String ns = namespaces[i];
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212 | query += "{?s ?p <"+ns+"/"+word+">} ";
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213 | if (i != namespaces.length-1){
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214 | query += "UNION \n";
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215 | } else {
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216 | query += "\n";
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217 | }
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218 | }
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219 |
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220 | query += "}";
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221 | } else if (type == PlainSparqlAccessor.FIND_TARGET_SPECIFIC_OBJECT){
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222 | query = // TODO
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223 | "select distinct ?s where \n{";
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224 | query += getPropertySparql(propList, word);
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225 | query += "}";
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226 | } else if (type == PlainSparqlAccessor.FIND_TARGET_SUBJECT){
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227 | String[] namespaces = setting.getNamespaceList();
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228 |
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229 | List<Map<String, RDFNode>> ret = new ArrayList<Map<String,RDFNode>>();
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230 | for (int i=0; i<namespaces.length; i++){
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231 | String ns = namespaces[i];
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232 | query = "select ?o where {\n"+
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233 | "<"+ns+"/"+word+"> ?p ?o \n";
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234 | query += "}";
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235 | List<Map<String, RDFNode>> temp = executeQuery(query);
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236 | if (temp != null && temp.size() > 0){
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237 | HashMap<String, RDFNode> node = new HashMap<String, RDFNode>();
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238 | node.put("s", new ResourceImpl(ns+"/"+word));
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239 | ret.add(node);
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240 | }
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241 |
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242 | }
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243 | // TODO 邨先棡縺ョ譛螟ァ謨ー縺ッnamespaces.size縺ェ縺ョ縺ァ蜴ウ蟇�↓縺ッLIMIT, OFFSET繧ょョ夂セゥ縺ァ縺阪k繧医≧縺ォ縺励※縺翫>縺滓婿縺瑚憶縺� |
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244 | return new SparqlResultSet(ret, false);
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245 | } else {
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246 | // TODO
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247 | query =
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248 | "select distinct ?s where {\n";
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249 | query += getPropertySparql(propList, word);
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250 | query += "}";
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251 | }
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252 | }
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253 | if (limit != null && limit > 0){
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254 | query +="\n LIMIT " + String.valueOf(limit+1);
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255 | }
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256 | if (offset != null && offset > 0){
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257 | query += "\n OFFSET " + String.valueOf(offset);
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258 | }
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259 |
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260 | List<Map<String, RDFNode>> result = executeQuery(query);
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261 | SparqlResultSet ret = new SparqlResultSet(result);
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262 | if (limit != null){
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263 | if (result != null && result.size() > limit){
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264 | result = result.subList(0, limit);
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265 | ret.setDefaultResult(result);
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266 | ret.setHasNext(true);
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267 | }
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268 | }
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269 |
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270 | return ret;
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271 | }
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272 |
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273 | private String getPropertySparql(String[] propList){
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274 | StringBuilder sb = new StringBuilder();
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275 | if (propList == null){
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276 | // 蠢オ縺ョ縺溘a
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277 | propList = new String[]{"http://www.w3.org/2000/01/rdf-schema#label"};
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278 | }
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279 |
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280 | if (propList.length == 1){
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281 | sb.append("?s <");
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282 | sb.append(propList[0]);
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283 | sb.append("> ?o \n");
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284 | } else {
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285 | sb.append("{\n");
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286 | for (int i=0; i<propList.length; i++){
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287 | sb.append("{?s <");
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288 | sb.append(propList[i]);
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289 | sb.append("> ?o ");
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290 | if (i == propList.length-1){
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291 | sb.append("}\n");
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292 | } else {
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293 | sb.append("} UNION \n");
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294 | }
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295 | }
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296 |
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297 | sb.append("}");
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298 | }
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299 | return sb.toString();
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300 | }
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301 |
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302 | private String getPropertySparql(String[] propList, String word){
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303 | StringBuilder sb = new StringBuilder();
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304 | if (propList == null){
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305 | // 蠢オ縺ョ縺溘a
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306 | propList = new String[]{"http://www.w3.org/2000/01/rdf-schema#label"};
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307 | }
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308 |
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309 | sb.append("{\n");
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310 | for (int i=0; i<propList.length; i++){
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311 |
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312 | sb.append("{?s <" +propList[i] + "> \""+word+"\"} UNION \n");
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313 | sb.append("{?s <" +propList[i] + "> \""+word+"\"@en} UNION \n");
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314 | sb.append("{?s <" +propList[i] + "> \""+word+"\"@ja");
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315 | if (i == propList.length-1){
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316 | sb.append("}\n");
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317 | } else {
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318 | sb.append("} UNION \n");
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319 | }
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320 | }
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321 |
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322 | sb.append("}");
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323 | return sb.toString();
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324 |
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325 | }
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326 |
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327 |
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328 | /**
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329 | * Thread繧定オキ蜍輔@縺ヲword譁�ュ怜�繧貞性繧subject繧貞叙蠕励@縺ヲ霑斐☆縲らオ先棡縺ッlistener縺ォ霑斐k縲� |
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330 | * @param word 讀懃エ「譁�ュ怜�
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331 | * @param resultListener 邨先棡繧貞女縺大叙繧詰istener
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332 | */
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333 | public boolean findSubject(String word, boolean fullMatch, Integer limit, Integer offset, int type, String[] propList, SparqlResultListener resultListener){
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334 |
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335 | Thread thread = new QueryThread(word, new Object[]{new Boolean(fullMatch), limit, offset, new Integer(type), propList}, resultListener){
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336 | public void run(){
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337 | try {
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338 | Boolean fullMatch = (Boolean)((Object[])getOption())[0];
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339 | Integer limit = (Integer)((Object[])getOption())[1];
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340 | Integer offset = (Integer)((Object[])getOption())[2];
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341 | Integer type = (Integer)((Object[])getOption())[3];
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342 | String[] propList = (String[])((Object[])getOption())[4];
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343 | getSparqlResultListener().resultReceived(findSubject(getQueryString(), fullMatch, limit, offset, type, propList));
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344 | } catch(Exception e){
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345 | throw new RuntimeException(e);
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346 | }
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347 | }
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348 | };
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349 | thread.setUncaughtExceptionHandler(resultListener);
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350 | thread.start();
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351 | return true;
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352 |
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353 | }
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354 |
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355 | /**
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356 | * 謖�ョ壹&繧後◆subject繧呈戟縺、triple��ubject縺ッ遒コ螳壹@縺ヲ縺�k縺ョ縺ァproperty縺ィobject縺ョ縺ソ�峨r霑斐☆
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357 | * @param triple
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358 | * @return
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359 | * @throws Exception
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360 | */
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361 | public List<Map<String, RDFNode>> findTripleFromSubject(String subject) throws Exception{
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362 | subject = subject.replace(" ", "%20");
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363 | String query =
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364 | "select ?p ?o where {\n" +
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365 | "<" + subject + "> ?p ?o\n"+
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366 | "}";
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367 |
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368 | return executeQuery(query);
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369 | }
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370 |
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371 | public boolean findTripleFromSubject(String subject, SparqlResultListener listener){
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372 |
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373 | Thread thread = new QueryThread(subject, listener){
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374 | public void run(){
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375 | try {
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376 | getSparqlResultListener().resultReceived(new SparqlResultSet(findTripleFromSubject(getQueryString())));
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377 | } catch(Exception e){
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378 | throw new RuntimeException(e);
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379 | }
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380 | }
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381 | };
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382 | thread.setUncaughtExceptionHandler(listener);
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383 | thread.start();
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384 | return true;
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385 |
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386 | }
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387 |
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388 |
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389 | @Override
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390 | public List<Map<String, RDFNode>> findPropertyList() throws Exception {
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391 | // TODO 譛ャ譚・縺ッdistinct縺ォ縺励◆縺�′縺昴l縺縺ィ驥阪>endpoint縺後≠繧� |
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392 | List<Map<String, RDFNode>> ret = new ArrayList<Map<String,RDFNode>>();
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393 | Map<String, RDFNode> result = new HashMap<String, RDFNode>();
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394 | ret.add(result);
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395 | String query =
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396 | "select ?s {\n" +
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397 | "?s ?p ?o\n"+
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398 | "} LIMIT 10";
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399 | List<Map<String, RDFNode>> subjects = executeQuery(query);
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400 | for (Map<String, RDFNode> subjectMap : subjects){
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401 | RDFNode subject = subjectMap.get("s");
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402 | query =
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403 | "select distinct ?p where {\n" +
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404 | "<" + subject + "> ?p ?o\n"+
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405 | "}";
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406 | List<Map<String, RDFNode>> properties = executeQuery(query);
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407 | for (Map<String, RDFNode> propertyMap : properties){
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408 | RDFNode property = propertyMap.get("p");
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409 | // property縺ョ蝣エ蜷医�縲∵綾繧翫�Map縺ョ蠖「蠑上r螟峨∴繧� |
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410 | // key:隕∫エ遞ョ蛻・縲�value:隕∫エ縲縺ァ縺ッ縺ェ縺上� |
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411 | // key:隕∫エ縺ョ譁�ュ怜�陦ィ迴セ縲�value:隕∫エ縲縺ィ縺吶k縲� |
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412 | // �郁ヲ∫エ遞ョ蛻・縺檎「コ螳壹@縺ヲ縺�k縺ョ縺ィ縲∬ヲ∫エ縺ョ驥崎、�r蜑企勁縺吶k縺溘a�� |
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413 | result.put(property.toString(), property);
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414 | System.out.println("p["+property.toString()+"]");
|
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415 | }
|
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416 | }
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417 |
|
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418 | return ret;
|
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419 | }
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420 |
|
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421 | @Override
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422 | public boolean findPropertyList(SparqlResultListener listener) {
|
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423 | Thread thread = new QueryThread(null, listener){
|
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424 | public void run(){
|
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425 | try {
|
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426 | getSparqlResultListener().resultReceived(new SparqlResultSet(findPropertyList()));
|
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427 | } catch(Exception e){
|
---|
428 | throw new RuntimeException(e);
|
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429 | }
|
---|
430 | }
|
---|
431 | };
|
---|
432 | thread.setUncaughtExceptionHandler(listener);
|
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433 | thread.start();
|
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434 | return true;
|
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435 | }
|
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436 |
|
---|
437 |
|
---|
438 | public static void main(String[] args){
|
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439 |
|
---|
440 | try {
|
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441 | URL url = new URL("http://www.wikipediaontology.org/query/?q=" + URLEncoder.encode("select * {?s ?p ?o}", "UTF-8") + "&type=xml&LIMIT=100");//POST縺吶k繝��繧ソ
|
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442 | HttpURLConnection conn = (HttpURLConnection)url.openConnection();
|
---|
443 | conn.setRequestProperty("User-Agent", "test");// 繝倥ャ繝繧定ィュ螳� |
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444 | conn.setRequestProperty("Accept-Language", "ja");// 繝倥ャ繝繧定ィュ螳� |
---|
445 | conn.setRequestProperty("Referer", "http://www.wikipediaontology.org/query/");// 繝倥ャ繝繧定ィュ螳� |
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446 | InputStreamReader isr = new java.io.InputStreamReader(conn.getInputStream(), "UTF-8");
|
---|
447 | BufferedReader br = new java.io.BufferedReader(isr);
|
---|
448 |
|
---|
449 | // 蜿嶺ソ。縺励◆繧ケ繝医Μ繝シ繝繧定。ィ遉コ
|
---|
450 | String line = null;
|
---|
451 | while (null != (line = br.readLine())) {
|
---|
452 | System.out.println(line);
|
---|
453 | }
|
---|
454 |
|
---|
455 | // 繧ケ繝医Μ繝シ繝縺ェ繧峨�縺ォ謗・邯壹r繧ッ繝ュ繝シ繧コ
|
---|
456 | br.close();
|
---|
457 | conn.disconnect();
|
---|
458 | } catch(Exception e){
|
---|
459 | e.printStackTrace();
|
---|
460 | }
|
---|
461 |
|
---|
462 | }
|
---|
463 | }
|
---|
464 |
|
---|
465 | class QueryThread extends Thread {
|
---|
466 |
|
---|
467 | private String queryString;
|
---|
468 | private Object option;
|
---|
469 | private SparqlResultListener listener;
|
---|
470 |
|
---|
471 | public QueryThread(String queryString, Object option, SparqlResultListener listener){
|
---|
472 | this.queryString = queryString;
|
---|
473 | this.option = option;
|
---|
474 | this.listener = listener;
|
---|
475 | }
|
---|
476 |
|
---|
477 | public QueryThread(String queryString, SparqlResultListener listener){
|
---|
478 | this(queryString, null, listener);
|
---|
479 | }
|
---|
480 |
|
---|
481 | protected String getQueryString(){
|
---|
482 | return this.queryString;
|
---|
483 | }
|
---|
484 |
|
---|
485 | protected Object getOption(){
|
---|
486 | return this.option;
|
---|
487 | }
|
---|
488 |
|
---|
489 | protected SparqlResultListener getSparqlResultListener(){
|
---|
490 | return this.listener;
|
---|
491 | }
|
---|
492 |
|
---|
493 | }
|
---|
494 |
|
---|