[DL-Learner SVN] SF.net SVN: dl-learner: [415] trunk/src/dl-learner/org/dllearner/kb/sparql

[<ku...@us...>]

Revision: 415
          http://dl-learner.svn.sourceforge.net/dl-learner/?rev=415&view=rev
Author:   kurzum
Date:     2008-01-23 01:02:01 -0800 (Wed, 23 Jan 2008)

Log Message:
-----------
added compatability with JSON

Modified Paths:
--------------
    trunk/src/dl-learner/org/dllearner/kb/sparql/query/SparqlQuery.java
    trunk/src/dl-learner/org/dllearner/kb/sparql/test/TestResultSet.java

Modified: trunk/src/dl-learner/org/dllearner/kb/sparql/query/SparqlQuery.java
===================================================================
--- trunk/src/dl-learner/org/dllearner/kb/sparql/query/SparqlQuery.java	2008-01-23 09:01:29 UTC (rev 414)
+++ trunk/src/dl-learner/org/dllearner/kb/sparql/query/SparqlQuery.java	2008-01-23 09:02:01 UTC (rev 415)
@@ -19,6 +19,8 @@
  */
 package org.dllearner.kb.sparql.query;
 
+import java.io.ByteArrayInputStream;
+import java.io.ByteArrayOutputStream;
 import java.net.URL;
 import java.util.Iterator;
 import java.util.List;
@@ -32,6 +34,7 @@
 import com.hp.hpl.jena.query.QueryExecutionFactory;
 import com.hp.hpl.jena.query.QueryFactory;
 import com.hp.hpl.jena.query.ResultSet;
+import com.hp.hpl.jena.query.ResultSetFactory;
 import com.hp.hpl.jena.query.ResultSetFormatter;
 import com.hp.hpl.jena.sparql.core.ResultBinding;
 
@@ -226,11 +229,34 @@
 	 * public Model asJenaModel(){ ResultSet rs=send(); return
 	 * ResultSetFormatter.toModel(rs); }
 	 */
+	public String getAsJSON(){
+		ResultSet rs=send(); 
+		ByteArrayOutputStream baos=new ByteArrayOutputStream();
+		ResultSetFormatter.outputAsJSON(baos, rs);
+		return baos.toString();
+		
+	}
 	
+	public static ResultSet JSONtoResultSet(String json){
+		ResultSet rs=null;
+		try{
+			ByteArrayInputStream bais=new ByteArrayInputStream(json.getBytes());
+			rs=ResultSetFactory.fromJSON(bais);
+			
+		}catch (Exception e) {e.printStackTrace();}
+		return rs;
+		
+	}
+	
+	
 	/*public void testJSon(){ 
-		
-		ResultSet rs=send(); 
 		try{
+			
+			try{
+			ByteArrayInputStream BAIS=new ByteArrayInputStream(JSON.getBytes());
+			ResultSet rs2=ResultSetFactory.fromJSON(BAIS);
+			System.out.println(ResultSetFormatter.asXMLString(rs2));
+			}catch (Exception e) {e.printStackTrace();}
 			//PipedOutputStream pos=new PipedOutputStream();
 			//pos.flush();
 			//System.out.println("hh");
@@ -248,7 +274,7 @@
 		}catch (Exception e) {e.printStackTrace();}
 		//return
 	 	//ResultSetFormatter.toModel(rs); }
-	}*/
+	}
 	
 	/**
 	 * creates a query for subjects with the specified label

Modified: trunk/src/dl-learner/org/dllearner/kb/sparql/test/TestResultSet.java
===================================================================
--- trunk/src/dl-learner/org/dllearner/kb/sparql/test/TestResultSet.java	2008-01-23 09:01:29 UTC (rev 414)
+++ trunk/src/dl-learner/org/dllearner/kb/sparql/test/TestResultSet.java	2008-01-23 09:02:01 UTC (rev 415)
@@ -43,10 +43,12 @@
 		SparqlEndpoint sse = SparqlEndpoint.dbpediaEndpoint();
 		SparqlQuery sqJena = new SparqlQuery(queryString, sse);
 
-		//sqJena.testJSon();
+		String json=sqJena.getAsJSON();
+		System.out.println(json);
 		
-		List<ResultBinding> l = sqJena.getAsList();
-		System.out.println(l.getClass());
+		
+		//List<ResultBinding> l = sqJena.getAsList();
+		//System.out.println(l.getClass());
 		//testSaving(new LinkedList<ResultBinding>(l));
 		/*
 		 * for (ResultBinding o : l) { System.out.println(o); // Iterator


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