[DL-Learner SVN] SF.net SVN: dl-learner: [453] trunk/src/dl-learner/org/dllearner/kb/sparql/ test/TestHTTP.java

[<sk...@us...>]

Revision: 453
          http://dl-learner.svn.sourceforge.net/dl-learner/?rev=453&view=rev
Author:   sknappe
Date:     2008-01-29 05:38:57 -0800 (Tue, 29 Jan 2008)

Log Message:
-----------
test for the http and the jena version of getting knowledge from endpoint

Added Paths:
-----------
    trunk/src/dl-learner/org/dllearner/kb/sparql/test/TestHTTP.java

Added: trunk/src/dl-learner/org/dllearner/kb/sparql/test/TestHTTP.java
===================================================================
--- trunk/src/dl-learner/org/dllearner/kb/sparql/test/TestHTTP.java	                        (rev 0)
+++ trunk/src/dl-learner/org/dllearner/kb/sparql/test/TestHTTP.java	2008-01-29 13:38:57 UTC (rev 453)
@@ -0,0 +1,102 @@
+package org.dllearner.kb.sparql.test;
+
+import java.io.BufferedInputStream;
+import java.io.IOException;
+import java.io.InputStream;
+import java.net.InetAddress;
+import java.net.Socket;
+import java.net.URLEncoder;
+
+import com.hp.hpl.jena.query.ResultSet;
+import com.hp.hpl.jena.sparql.engine.http.QueryEngineHTTP;
+
+public class TestHTTP {
+	public static void main(String[] args) throws Exception{
+		
+		String query="SELECT DISTINCT ?object\n"+
+					"FROM <http://dbpedia.org>\n"+
+					"WHERE { <http://dbpedia.org/resource/Leipzig> <http://www.w3.org/2000/01/rdf-schema#label> ?object}\n";
+		
+		double time=0;
+		for (int i=0; i<101; i++)
+		{
+			if (i!=0) time+=TestHTTP.httpQuery(query);
+		}
+		time=time/100;
+		System.out.println("Durchschnittliche Zeit f\xFCr eine Anfrage per Http-Methode: "+time);
+		
+		time=0;
+		for (int i=0; i<101; i++)
+		{
+			if (i!=0) time+=TestHTTP.jenaQuery(query);
+		}
+		time=time/100;
+		System.out.println("Durchschnittliche Zeit f\xFCr eine Anfrage per Jena-Methode: "+time);
+	}
+	
+	private static double jenaQuery(String query)
+	{
+		double start=System.currentTimeMillis();
+		QueryEngineHTTP queryExecution=new QueryEngineHTTP("http://localhost:8890/sparql",query);
+		queryExecution.addDefaultGraph("http://dbpedia.org");
+		// Jena access to DBpedia SPARQL endpoint
+		ResultSet rs = queryExecution.execSelect();
+		double end=System.currentTimeMillis();
+		return ((end-start)/1000);
+	}
+	
+	private static double httpQuery(String query) throws Exception
+	{
+		char value[]={13,10};
+		String cut=new String(value);
+		String test="GET /sparql?default-graph-uri=http%3A%2F%2Fdbpedia.org&query=" +
+		URLEncoder.encode(query, "UTF-8")+
+		"&format=application%2Fsparql-results%2Bxml HTTP/1.1"+cut+
+		"Host: localhost"+cut+
+	    "Connection: close"+cut+
+	    "Accept: text/xml,application/xml,application/xhtml+xml,text/html;q=0.9,text/plain;q=0.8,image/png,*/*;q=0.5"+cut+
+	    "Accept-Language: de-de,de;q=0.8,en-us;q=0.5,en;q=0.3"+cut+
+	    "Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.7"+cut+
+	    "User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; de; rv:1.8.1.4) Gecko/20070515 Firefox/2.0.0.4 Web-Sniffer/1.0.24"+cut+
+	    cut;
+		String retval="";
+		//
+		double start=System.currentTimeMillis();
+		byte resp[]=null;
+		
+		try{
+			Socket SparqlServer=new Socket(InetAddress.getByName("localhost"),8890);
+			String request=test;
+			// send request
+			(SparqlServer.getOutputStream()).write(request.getBytes());
+	
+			//get Response
+			resp=readBuffer(new BufferedInputStream(SparqlServer.getInputStream()));
+			retval=new String(resp);
+			retval=retval.substring(retval.indexOf(cut+""+cut)+4);
+					
+			SparqlServer.close();
+		} catch (Exception e){}
+		double end=System.currentTimeMillis();
+		return (end-start)/1000;
+	}
+	
+	private static byte[] readBuffer(InputStream IS)
+	throws IOException{
+		byte  buffer[] = new byte[0xffff];
+		int nbytes=0;
+		byte resp[]=new byte[0];
+		while ((nbytes=IS.read(buffer))!=-1)	{
+			byte tmp[]=new byte[resp.length+nbytes];
+			int i=0;
+			for (;i<resp.length;i++){
+				tmp[i]=resp[i];
+			}
+			for(int a=0;a<nbytes;a++,i++){
+				tmp[i]=buffer[a];
+			}
+			resp=tmp;
+		}
+		return resp;
+	}
+}


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