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136 lines
3.4 KiB
136 lines
3.4 KiB
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import java.io.ByteArrayOutputStream;
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import java.net.MalformedURLException;
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import java.util.List;
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import net.yacy.cora.protocol.RequestHeader;
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import net.yacy.interaction.TripleStore;
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import net.yacy.kelondro.data.meta.DigestURI;
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import net.yacy.search.Switchboard;
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import de.anomic.http.server.HTTPDemon;
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import de.anomic.server.serverObjects;
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import de.anomic.server.serverSwitch;
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import com.hp.hpl.jena.query.QueryExecution;
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import com.hp.hpl.jena.query.QueryExecutionFactory;
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import com.hp.hpl.jena.query.QueryFactory ;
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import com.hp.hpl.jena.query.QuerySolution;
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import com.hp.hpl.jena.query.ResultSet;
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import com.hp.hpl.jena.query.ResultSetFormatter;
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import com.hp.hpl.jena.sparql.algebra.Algebra ;
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import com.hp.hpl.jena.sparql.algebra.Op ;
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import com.hp.hpl.jena.sparql.engine.QueryIterator ;
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import com.hp.hpl.jena.sparql.engine.binding.Binding ;
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import com.hp.hpl.jena.rdf.model.*;
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import com.hp.hpl.jena.util.FileManager;
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public class Triple_p {
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public static serverObjects respond(final RequestHeader header,
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final serverObjects post, final serverSwitch env) {
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final Switchboard sb = (Switchboard) env;
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final serverObjects prop = new serverObjects();
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boolean hasRights = sb.verifyAuthentication(header);
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prop.put("display", 1); // Fixed to 1
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prop.putHTML("mode_output", "no query performed");
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String q = "PREFIX lln: <http://virtual.liebel-lab.org/n#>\n"+
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"PREFIX rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#>\n"+
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"PREFIX xsd: <http://www.w3.org/2001/XMLSchema#>\n"+
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"SELECT ?resource ?pa\n"+
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"WHERE {\n"+
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"?resource lln:percentageofarea ?pa .\n"+
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"FILTER (xsd:float (?pa) > 3.000)\n"+
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"}";
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if (post != null) {
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if (post.containsKey("submit")) {
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//
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System.out.println (post.get("submit"));
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}
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if (post.containsKey("rdffileslist")) {
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String list = post.get("rdffileslist");
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for (String s: list.split("\n")) {
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String newurl = s;
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try {
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DigestURI d = new DigestURI (s);
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if (d.getHost().endsWith(".yacy")) {
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newurl = d.getProtocol()+"://"+HTTPDemon.getAlternativeResolver().resolve(d.getHost())+d.getPath();
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System.out.println (newurl);
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}
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} catch (MalformedURLException e) {
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// TODO Auto-generated catch block
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e.printStackTrace();
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}
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TripleStore.Load (newurl);
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}
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}
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if (post.containsKey("rdffile")) {
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TripleStore.Add(post.get("rdffile$file"));
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}
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if (post.containsKey("query")) {
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// Create a new query
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String queryString = post.get("query");
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q = queryString;
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int count = 0;
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try {
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com.hp.hpl.jena.query.Query query = QueryFactory.create(queryString);
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// Execute the query and obtain results
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QueryExecution qe = QueryExecutionFactory.create(query, TripleStore.model);
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ResultSet resultSet = qe.execSelect();
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ByteArrayOutputStream sos = new ByteArrayOutputStream();
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ResultSetFormatter.outputAsRDF(sos, "", resultSet);
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prop.putHTML("mode_rdfdump", sos.toString());
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for (String s: resultSet.getResultVars()) {
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prop.putHTML("mode_output_"+count+"_caption", s);
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count ++;
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}
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} catch (Exception e) {
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prop.putHTML("mode_rdfdump", "error");
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}
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prop.putHTML("mode_output", ""+count);
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}
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}
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prop.putHTML("mode_query", q);
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// return rewrite properties
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return prop;
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}
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}
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