dl-learner-svn Mailing List for DL-Learner (Page 127)

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Revision: 1125
          http://dl-learner.svn.sourceforge.net/dl-learner/?rev=1125&view=rev
Author:   sknappe
Date:     2008-08-21 16:58:03 +0000 (Thu, 21 Aug 2008)

Log Message:
-----------
changed some little stuff

Modified Paths:
--------------
    trunk/src/dl-learner/org/dllearner/kb/sparql/Cache.java
    trunk/src/dl-learner/org/dllearner/kb/sparql/SparqlQuery.java
    trunk/src/dl-learner/org/dllearner/kb/sparql/SparqlQueryException.java
    trunk/src/dl-learner/org/dllearner/server/DLLearnerWS.java

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

Modified: trunk/src/dl-learner/org/dllearner/kb/sparql/Cache.java
===================================================================

--- trunk/src/dl-learner/org/dllearner/kb/sparql/Cache.java	2008-08-21 16:53:11 UTC (rev 1124)
+++ trunk/src/dl-learner/org/dllearner/kb/sparql/Cache.java	2008-08-21 16:58:03 UTC (rev 1125)
@@ -259,7 +259,7 @@
 		if (result != null) {
 			query.setJson(result);
 			
-		    	query.setRunning(false);
+		    query.setRunning(false);
 			SparqlQuery.writeToSparqlLog("***********\nJSON retrieved from cache");
 			SparqlQuery.writeToSparqlLog("wget -S -O - '\n"+query.getSparqlEndpoint().getHTTPRequest());
 			SparqlQuery.writeToSparqlLog(query.getSparqlQueryString());

Added: trunk/src/dl-learner/org/dllearner/kb/sparql/NaturalLanguageDescriptionConvertVisitor.java
===================================================================
--- trunk/src/dl-learner/org/dllearner/kb/sparql/NaturalLanguageDescriptionConvertVisitor.java	                        (rev 0)
+++ trunk/src/dl-learner/org/dllearner/kb/sparql/NaturalLanguageDescriptionConvertVisitor.java	2008-08-21 16:58:03 UTC (rev 1125)
@@ -0,0 +1,270 @@
+package org.dllearner.kb.sparql;
+import java.util.HashMap;
+import java.util.SortedSet;
+import java.util.TreeSet;
+
+import org.apache.log4j.Logger;
+import org.dllearner.algorithms.gp.ADC;
+import org.dllearner.core.ComponentManager;
+import org.dllearner.core.owl.DatatypeExactCardinalityRestriction;
+import org.dllearner.core.owl.DatatypeMaxCardinalityRestriction;
+import org.dllearner.core.owl.DatatypeMinCardinalityRestriction;
+import org.dllearner.core.owl.DatatypeSomeRestriction;
+import org.dllearner.core.owl.DatatypeValueRestriction;
+import org.dllearner.core.owl.Description;
+import org.dllearner.core.owl.DescriptionVisitor;
+import org.dllearner.core.owl.Intersection;
+import org.dllearner.core.owl.NamedClass;
+import org.dllearner.core.owl.Negation;
+import org.dllearner.core.owl.Nothing;
+import org.dllearner.core.owl.ObjectAllRestriction;
+import org.dllearner.core.owl.ObjectExactCardinalityRestriction;
+import org.dllearner.core.owl.ObjectMaxCardinalityRestriction;
+import org.dllearner.core.owl.ObjectMinCardinalityRestriction;
+import org.dllearner.core.owl.ObjectSomeRestriction;
+import org.dllearner.core.owl.ObjectValueRestriction;
+import org.dllearner.core.owl.Thing;
+import org.dllearner.core.owl.Union;
+import org.dllearner.parser.KBParser;
+import org.dllearner.parser.ParseException;
+
+/**
+ * Converter from DL-Learner descriptions to a corresponding natural
+ * language description.
+ * 
+ * @author Sebastian Knappe
+ * 
+ *
+ */
+public class NaturalLanguageDescriptionConvertVisitor implements DescriptionVisitor{
+	
+	private static Logger logger = Logger.getLogger(ComponentManager.class);
+
+	private String query="";
+	
+	private SPARQLTasks tasks;
+	
+	public NaturalLanguageDescriptionConvertVisitor()
+	{
+		//stack.push("subject");
+		tasks=new SPARQLTasks(new Cache("cache"),SparqlEndpoint.getEndpointDBpedia());
+	}
+	
+	private String getDescription()
+	{	// for old function see below
+		// it was using the object attribute in a strange way
+		// QUALITY: what if this function is called several times?? should be private maybe?
+		String tmpQuery=""+query;
+		
+		query = tmpQuery;
+		return query;
+	}
+	
+	public static String getNaturalLanguageDescription(Description description)
+	{
+		NaturalLanguageDescriptionConvertVisitor visitor=new NaturalLanguageDescriptionConvertVisitor();
+		description.accept(visitor);
+		String ret = visitor.getDescription();
+		return ret;
+	}
+	
+	public static String getSparqlQuery(String descriptionKBSyntax) throws ParseException
+	{	
+		Description d = KBParser.parseConcept(descriptionKBSyntax);
+		NaturalLanguageDescriptionConvertVisitor visitor=new NaturalLanguageDescriptionConvertVisitor();
+		d.accept(visitor);
+		String ret = visitor.getDescription();
+		return ret;
+	}
+	
+	/**
+	 * Used for testing the Sparql Query converter.
+	 * 
+	 * @param args
+	 */
+	public static void main(String[] args) {
+		try {
+			SortedSet<String> s = new TreeSet<String>();
+			HashMap<String,String> result = new HashMap<String,String>();
+			String conj="(\"http://dbpedia.org/class/yago/Person100007846\" AND \"http://dbpedia.org/class/yago/Head110162991\")";
+			s.add("EXISTS \"http://dbpedia.org/property/disambiguates\".TOP");
+			s.add("EXISTS \"http://dbpedia.org/property/successor\".\"http://dbpedia.org/class/yago/Person100007846\"");
+			s.add("EXISTS \"http://dbpedia.org/property/successor\"."+conj);
+			s.add("ALL \"http://dbpedia.org/property/disambiguates\".TOP");
+			s.add("ALL \"http://dbpedia.org/property/successor\".\"http://dbpedia.org/class/yago/Person100007846\"");
+			s.add("\"http://dbpedia.org/class/yago/Person100007846\"");
+			s.add(conj);
+			s.add("(\"http://dbpedia.org/class/yago/Person100007846\" OR \"http://dbpedia.org/class/yago/Head110162991\")");
+			s.add("NOT \"http://dbpedia.org/class/yago/Person100007846\"");
+			s.add("(\"http://dbpedia.org/class/yago/HeadOfState110164747\" AND (\"http://dbpedia.org/class/yago/Negotiator110351874\" AND \"http://dbpedia.org/class/yago/Representative110522035\"))");
+			for (String kbsyntax : s) {
+				result.put(kbsyntax,NaturalLanguageDescriptionConvertVisitor.getSparqlQuery(kbsyntax));
+			}
+			System.out.println("************************");
+			for (String string : result.keySet()) {
+				System.out.println("KBSyntayString: "+string);
+				System.out.println("Query:\n"+result.get(string));
+				System.out.println("************************");
+			}
+			System.out.println("Finished");
+		} catch (ParseException e) {
+			// TODO Auto-generated catch block
+			e.printStackTrace();
+		}
+	}
+	
+	/* (non-Javadoc)
+	 * @see org.dllearner.core.owl.DescriptionVisitor#visit(org.dllearner.core.owl.Negation)
+	 */
+	public void visit(Negation description) {
+		logger.trace("Negation");
+		query+="not ";
+		description.getChild(0).accept(this);
+	}
+
+	/* (non-Javadoc)
+	 * @see org.dllearner.core.owl.DescriptionVisitor#visit(org.dllearner.core.owl.ObjectAllRestriction)
+	 */
+	public void visit(ObjectAllRestriction description) {
+		logger.trace("ObjectAllRestriction");
+		SortedSet<String> label=tasks.queryAsSet("SELECT ?label WHERE {<"+description.getRole().toString()+"> <http://www.w3.org/2000/01/rdf-schema#label> ?label}", "label");
+		if (label.size()>0) query+="all "+label.first()+" are ";
+		else query+="all "+description.getRole().toString().substring(description.getRole().toString().lastIndexOf("/")+1)+" are ";
+		description.getChild(0).accept(this);
+		logger.trace(description.getRole().toString());
+		logger.trace(description.getChild(0).toString());
+	}
+
+	/* (non-Javadoc)
+	 * @see org.dllearner.core.owl.DescriptionVisitor#visit(org.dllearner.core.owl.ObjectSomeRestriction)
+	 */
+	public void visit(ObjectSomeRestriction description) {
+		logger.trace("ObjectSomeRestriction");
+		SortedSet<String> label=tasks.queryAsSet("SELECT ?label WHERE {<"+description.getRole().toString()+"> <http://www.w3.org/2000/01/rdf-schema#label> ?label}", "label");
+		if (label.size()>0) query+="has "+label.first()+" which is ";
+		else query+="has "+description.getRole().toString().substring(description.getRole().toString().lastIndexOf("/")+1)+" which is ";
+		description.getChild(0).accept(this);
+		logger.trace(description.getRole().toString());
+		logger.trace(description.getChild(0).toString());
+	}
+
+	/* (non-Javadoc)
+	 * @see org.dllearner.core.owl.DescriptionVisitor#visit(org.dllearner.core.owl.Nothing)
+	 */
+	public void visit(Nothing description) {
+		logger.trace("Nothing");
+		query+="nothing";
+	}
+
+	/* (non-Javadoc)
+	 * @see org.dllearner.core.owl.DescriptionVisitor#visit(org.dllearner.core.owl.Thing)
+	 */
+	public void visit(Thing description) {
+		logger.trace("Thing");
+		query+="anything";
+	}
+
+	/* (non-Javadoc)
+	 * @see org.dllearner.core.owl.DescriptionVisitor#visit(org.dllearner.core.owl.Intersection)
+	 */
+	public void visit(Intersection description) {
+		// HACK see replace hacks in other functions
+		logger.trace("Intersection");
+		description.getChild(0).accept(this);
+		query+=" and ";
+		description.getChild(1).accept(this);
+	}
+
+	/* (non-Javadoc)
+	 * @see org.dllearner.core.owl.DescriptionVisitor#visit(org.dllearner.core.owl.Union)
+	 */
+	public void visit(Union description) {
+		// HACK see replace hacks in other functions
+		logger.trace("Union");
+		description.getChild(0).accept(this);
+		query+=" or ";
+		description.getChild(1).accept(this);
+	}
+
+	/* (non-Javadoc)
+	 * @see org.dllearner.core.owl.DescriptionVisitor#visit(org.dllearner.core.owl.ObjectMinCardinalityRestriction)
+	 */
+	public void visit(ObjectMinCardinalityRestriction description) {
+		logger.trace("ObjectMinCardinalityRestriction");
+	}
+
+	/* (non-Javadoc)
+	 * @see org.dllearner.core.owl.DescriptionVisitor#visit(org.dllearner.core.owl.ObjectExactCardinalityRestriction)
+	 */
+	public void visit(ObjectExactCardinalityRestriction description) {
+		logger.trace("ObjectExactCardinalityRestriction");
+	}
+
+	/* (non-Javadoc)
+	 * @see org.dllearner.core.owl.DescriptionVisitor#visit(org.dllearner.core.owl.ObjectMaxCardinalityRestriction)
+	 */
+	public void visit(ObjectMaxCardinalityRestriction description) {
+		logger.trace("ObjectMaxCardinalityRestriction");
+	}
+
+	/* (non-Javadoc)
+	 * @see org.dllearner.core.owl.DescriptionVisitor#visit(org.dllearner.core.owl.ObjectValueRestriction)
+	 */
+	public void visit(ObjectValueRestriction description) {
+		logger.trace("ObjectValueRestriction");
+	}
+
+	/* (non-Javadoc)
+	 * @see org.dllearner.core.owl.DescriptionVisitor#visit(org.dllearner.core.owl.DatatypeValueRestriction)
+	 */
+	public void visit(DatatypeValueRestriction description) {
+		logger.trace("DatatypeValueRestriction");
+	}
+
+	/* (non-Javadoc)
+	 * @see org.dllearner.core.owl.DescriptionVisitor#visit(org.dllearner.core.owl.NamedClass)
+	 */
+	public void visit(NamedClass description) {
+		
+		logger.trace("NamedClass");
+		SortedSet<String> label=tasks.queryAsSet("SELECT ?label WHERE {<"+description.getName()+"> <http://www.w3.org/2000/01/rdf-schema#label> ?label}", "label");
+		query+="a "+label.first();
+	}
+	
+	
+
+	/* (non-Javadoc)
+	 * @see org.dllearner.core.owl.DescriptionVisitor#visit(org.dllearner.algorithms.gp.ADC)
+	 */
+	public void visit(ADC description) {
+		logger.trace("ADC");
+	}
+
+	/* (non-Javadoc)
+	 * @see org.dllearner.core.owl.DescriptionVisitor#visit(org.dllearner.core.owl.DatatypeMinCardinalityRestriction)
+	 */
+	public void visit(DatatypeMinCardinalityRestriction description) {
+		logger.trace("DatatypeMinCardinalityRestriction");
+	}
+
+	/* (non-Javadoc)
+	 * @see org.dllearner.core.owl.DescriptionVisitor#visit(org.dllearner.core.owl.DatatypeExactCardinalityRestriction)
+	 */
+	public void visit(DatatypeExactCardinalityRestriction description) {
+		logger.trace("DatatypeExactCardinalityRestriction");
+	}
+
+	/* (non-Javadoc)
+	 * @see org.dllearner.core.owl.DescriptionVisitor#visit(org.dllearner.core.owl.DatatypeMaxCardinalityRestriction)
+	 */
+	public void visit(DatatypeMaxCardinalityRestriction description) {
+		logger.trace("DatatypeMaxCardinalityRestriction");
+	}
+
+	/* (non-Javadoc)
+	 * @see org.dllearner.core.owl.DescriptionVisitor#visit(org.dllearner.core.owl.DatatypeSomeRestriction)
+	 */
+	public void visit(DatatypeSomeRestriction description) {
+		logger.trace("DatatypeSomeRestriction");
+	}
+}

Modified: trunk/src/dl-learner/org/dllearner/kb/sparql/SparqlQuery.java
===================================================================
--- trunk/src/dl-learner/org/dllearner/kb/sparql/SparqlQuery.java	2008-08-21 16:53:11 UTC (rev 1124)
+++ trunk/src/dl-learner/org/dllearner/kb/sparql/SparqlQuery.java	2008-08-21 16:58:03 UTC (rev 1125)
@@ -23,6 +23,7 @@
 import java.io.ByteArrayOutputStream;
 import java.io.FileWriter;
 import java.io.UnsupportedEncodingException;
+import java.net.UnknownHostException;
 import java.nio.charset.Charset;
 
 import javax.xml.ws.http.HTTPException;
@@ -129,6 +130,7 @@
 			logger.warn("Exception in SparqlQuery\n"+ e.toString());
 			logger.warn("query was "+ sparqlQueryString);
 			writeToSparqlLog("ERROR: HTTPException occured"+ e.toString());
+			isRunning = false;
 			throw e;
 			
 		}catch (RuntimeException e) {
@@ -136,14 +138,14 @@
 				logger.warn("RuntimeException in SparqlQuery"+ e.toString());
 				writeToSparqlLog("ERROR: HTTPException occured"+ e.toString());
 			//}
+			isRunning = false;
 			throw e;
 		}
 		
 		// there is a minor issue here: Jamon now also measures ResultsetConversion
 		// the code would need a second try catch block to handle it correctly
 		JamonMonitorLogger.getTimeMonitor(SparqlQuery.class, "httpTime").stop();
-		isRunning = false;
-		
+		isRunning = false;	
 	}
 
 	

Modified: trunk/src/dl-learner/org/dllearner/kb/sparql/SparqlQueryException.java
===================================================================
--- trunk/src/dl-learner/org/dllearner/kb/sparql/SparqlQueryException.java	2008-08-21 16:53:11 UTC (rev 1124)
+++ trunk/src/dl-learner/org/dllearner/kb/sparql/SparqlQueryException.java	2008-08-21 16:58:03 UTC (rev 1125)
@@ -24,6 +24,6 @@
 	static final long serialVersionUID=101;
     
     public SparqlQueryException (String message) {
-        super ("Sparql Query failed.\n"+message);
+        super (message);
     }
 }

Modified: trunk/src/dl-learner/org/dllearner/server/DLLearnerWS.java
===================================================================
--- trunk/src/dl-learner/org/dllearner/server/DLLearnerWS.java	2008-08-21 16:53:11 UTC (rev 1124)
+++ trunk/src/dl-learner/org/dllearner/server/DLLearnerWS.java	2008-08-21 16:58:03 UTC (rev 1125)
@@ -387,6 +387,7 @@
 			json += "\"solution" + count + "\" : " + description.asJSON();
 			count++;
 		}
+		json+="}";
 		return json;
 	}
 	
@@ -561,7 +562,7 @@
 		    throw new SparqlQueryException("SparqlQuery failed"+e.toString());
 		}
 		
-		if(json == null) { throw new SparqlQueryException("SparqlQuery failed JSON was null");}
+		if(json == null) { throw new SparqlQueryException("Sparql Query failed. Please try again later.");}
 		return json;
 		//if ((json=state.getQuery(queryID).getJson())!=null) return json;
 		//else if ((resultSet=state.getQuery(queryID).getResultSet())!=null) return SparqlQuery.getAsJSON(resultSet); 


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dl-learner-svn Mailing List for DL-Learner (Page 127)

dl-learner-svn — DL-Learner Subversion commits