dl-learner-svn Mailing List for DL-Learner (Page 131)

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Revision: 1025
          http://dl-learner.svn.sourceforge.net/dl-learner/?rev=1025&view=rev
Author:   kurzum
Date:     2008-07-30 06:53:34 +0000 (Wed, 30 Jul 2008)

Log Message:
-----------
more comments, renamed some simple functions, which is responsible for the changes in the most classes

Modified Paths:
--------------
    trunk/src/dl-learner/org/dllearner/kb/extraction/TypedSparqlQuery.java
    trunk/src/dl-learner/org/dllearner/kb/extraction/TypedSparqlQueryClasses.java
    trunk/src/dl-learner/org/dllearner/kb/sparql/Cache.java
    trunk/src/dl-learner/org/dllearner/kb/sparql/SPARQLTasks.java
    trunk/src/dl-learner/org/dllearner/kb/sparql/SparqlEndpoint.java
    trunk/src/dl-learner/org/dllearner/kb/sparql/SparqlKnowledgeSource.java
    trunk/src/dl-learner/org/dllearner/kb/sparql/SparqlQuery.java
    trunk/src/dl-learner/org/dllearner/scripts/SKOS7030.java
    trunk/src/dl-learner/org/dllearner/scripts/SPARQLExtractionEvaluation.java
    trunk/src/dl-learner/org/dllearner/scripts/SPARQLMassLearning.java
    trunk/src/dl-learner/org/dllearner/server/DLLearnerWS.java
    trunk/src/dl-learner/org/dllearner/test/JenaQueryToResultSpeedTest.java
    trunk/src/dl-learner/org/dllearner/test/SparqlEndpointTest.java

Modified: trunk/src/dl-learner/org/dllearner/kb/extraction/TypedSparqlQuery.java
===================================================================

--- trunk/src/dl-learner/org/dllearner/kb/extraction/TypedSparqlQuery.java	2008-07-29 14:30:25 UTC (rev 1024)
+++ trunk/src/dl-learner/org/dllearner/kb/extraction/TypedSparqlQuery.java	2008-07-30 06:53:34 UTC (rev 1025)
@@ -99,7 +99,7 @@
 //		query.extraDebugInfo=uri.toString();
 		String JSON = cache.executeSparqlQuery(query);
 		
-		ResultSet rs = SparqlQuery.JSONtoResultSet(JSON);
+		ResultSet rs = SparqlQuery.convertJSONtoResultSet(JSON);
 		
 		List<ResultBinding> l = ResultSetFormatter.toList(rs);
 		

Modified: trunk/src/dl-learner/org/dllearner/kb/extraction/TypedSparqlQueryClasses.java
===================================================================
--- trunk/src/dl-learner/org/dllearner/kb/extraction/TypedSparqlQueryClasses.java	2008-07-29 14:30:25 UTC (rev 1024)
+++ trunk/src/dl-learner/org/dllearner/kb/extraction/TypedSparqlQueryClasses.java	2008-07-30 06:53:34 UTC (rev 1025)
@@ -65,7 +65,7 @@
 
 		SparqlQuery query = new SparqlQuery(sparqlQueryString, configuration.getSparqlEndpoint());
 //		query.extraDebugInfo=uri.toString();
-		ResultSet rs = SparqlQuery.JSONtoResultSet(cache.executeSparqlQuery(query));		
+		ResultSet rs = SparqlQuery.convertJSONtoResultSet(cache.executeSparqlQuery(query));		
 		
 		List<ResultBinding> l = ResultSetFormatter.toList(rs);
 		for (ResultBinding resultBinding : l) {

Modified: trunk/src/dl-learner/org/dllearner/kb/sparql/Cache.java
===================================================================
--- trunk/src/dl-learner/org/dllearner/kb/sparql/Cache.java	2008-07-29 14:30:25 UTC (rev 1024)
+++ trunk/src/dl-learner/org/dllearner/kb/sparql/Cache.java	2008-07-30 06:53:34 UTC (rev 1025)
@@ -82,18 +82,29 @@
 		this("cache");
 	} */
 	
+	/**
+	 * A Persistant cache is stored in the folder cachePersistant.
+	 * It has longer freshness 365 days and is mainly usefull for developing
+	 * @return a Cache onject
+	 */
 	public static Cache getPersistentCache(){
 		Cache c = new Cache("cachePersistant"); 
 		c.setFreshnessInDays(365);
 		return c;
 	}
 	
+	/**
+	 * @return the default cache object
+	 */
 	public static Cache getDefaultCache(){
 		Cache c = new Cache("cache"); 
-		
 		return c;
 	}
 	
+	/**
+	 * the default cachedir normally is "cache".
+	 * @return Default Cache Dir
+	 */
 	public static String getDefaultCacheDir(){
 		return "cache";
 	}
@@ -146,17 +157,20 @@
 	 * 
 	 * @param sparqlQuery
 	 *            SPARQL query to check.
-	 * @return Query result or null if no result has been found or it is
+	 * @return Query result as JSON or null if no result has been found or it is
 	 *         outdated.
 	 */
 	@SuppressWarnings({"unchecked"})
 	private String getCacheEntry(String sparqlQuery) {
+		
 		String filename = getFilename(sparqlQuery);
 		File file = new File(filename);
 		
 		// return null (indicating no result) if file does not exist
-		if(!file.exists())
+		if(!file.exists()) {
 			return null;
+		}
+			
 		
 		LinkedList<Object> entry = null;
 		try {
@@ -221,10 +235,7 @@
 
 	// check whether the given timestamp is fresh
 	private boolean checkFreshness(long timestamp) {
-		if ((System.currentTimeMillis() - timestamp) <= (freshnessSeconds * 1000))
-			return true;
-		else
-			return false;
+		return ((System.currentTimeMillis() - timestamp) <= (freshnessSeconds * 1000));
 	}
 
 	/**
@@ -242,7 +253,7 @@
 		JamonMonitorLogger.increaseCount(Cache.class, "TotalQueries");
 	
 		JamonMonitorLogger.getTimeMonitor(Cache.class, "ReadTime").start();
-		String result = getCacheEntry(query.getQueryString());
+		String result = getCacheEntry(query.getSparqlQueryString());
 		JamonMonitorLogger.getTimeMonitor(Cache.class, "ReadTime").stop();
 		
 		if (result != null) {
@@ -250,8 +261,8 @@
 			
 		    	query.setRunning(false);
 			SparqlQuery.writeToSparqlLog("***********\nJSON retrieved from cache");
-			SparqlQuery.writeToSparqlLog(query.getQueryString());
-			SparqlQuery.writeToSparqlLog(query.getEndpoint().getURL().toString());
+			SparqlQuery.writeToSparqlLog(query.getSparqlQueryString());
+			SparqlQuery.writeToSparqlLog(query.getSparqlEndpoint().getURL().toString());
 			SparqlQuery.writeToSparqlLog("JSON: "+result);
 			JamonMonitorLogger.increaseCount(Cache.class, "SuccessfulHits");
 			
@@ -261,16 +272,15 @@
 		    	query.send();
 			String json = query.getJson();
 			if (json!=null){
-				addToCache(query.getQueryString(), json);
+				addToCache(query.getSparqlQueryString(), json);
 				SparqlQuery.writeToSparqlLog("result added to cache: "+json);
 				result=json;
 				//query.setJson(result);
-			}
-			else {
+			} else {
 				json="";
 				result="";
-				logger.warn(Cache.class.getSimpleName()+"empty result: "+query.getQueryString());
-				SparqlQuery.writeToSparqlLog("empty result for : "+query.getQueryString());
+				logger.warn(Cache.class.getSimpleName()+"empty result: "+query.getSparqlQueryString());
+				SparqlQuery.writeToSparqlLog("empty result for : "+query.getSparqlQueryString());
 			}
 			
 			//return json;
@@ -279,6 +289,10 @@
 		return result;
 	}
 	
+	/**
+	 * Changes how long cached results will stay fresh (default 15 days).
+	 * @param days number of days
+	 */
 	public void setFreshnessInDays(int days){
 		freshnessSeconds = days * 24 * 60 * 60;
 	}

Modified: trunk/src/dl-learner/org/dllearner/kb/sparql/SPARQLTasks.java
===================================================================
--- trunk/src/dl-learner/org/dllearner/kb/sparql/SPARQLTasks.java	2008-07-29 14:30:25 UTC (rev 1024)
+++ trunk/src/dl-learner/org/dllearner/kb/sparql/SPARQLTasks.java	2008-07-30 06:53:34 UTC (rev 1025)
@@ -47,22 +47,22 @@
 	private final SparqlEndpoint sparqlEndpoint;
 
 	/**
-	 * @param c a cache object
-	 * @param se the Endpoint the sparql queries will be send to
+	 * @param cache a cache object
+	 * @param sparqlEndpoint the Endpoint the sparql queries will be send to
 	 */
-	public SPARQLTasks(final Cache c, final SparqlEndpoint se) {
+	public SPARQLTasks(final Cache cache, final SparqlEndpoint sparqlEndpoint) {
 		super();
-		this.cache = c;
-		this.sparqlEndpoint = se;
+		this.cache = cache;
+		this.sparqlEndpoint = sparqlEndpoint;
 	}
 
 	/**
-	 * @param se the Endpoint the sparql queries will be send to
+	 * @param sparqlEndpoint the Endpoint the sparql queries will be send to
 	 */
-	public SPARQLTasks(final SparqlEndpoint se) {
+	public SPARQLTasks(final SparqlEndpoint sparqlEndpoint) {
 		super();
 		this.cache = null;
-		this.sparqlEndpoint = se;
+		this.sparqlEndpoint = sparqlEndpoint;
 	}
 
 	/**
@@ -117,8 +117,6 @@
 	 * @see conceptRewrite(String descriptionKBSyntax, SparqlEndpoint se, Cache
 	 *      c, boolean simple )
 	 * @param description
-	 * @param sparqlEndpoint
-	 * @param cache
 	 * @param simple
 	 * @return
 	 */
@@ -175,10 +173,10 @@
 	 * empty set on some endpoints. returns all direct subclasses of String
 	 * concept
 	 * 
-	 * @param concept
+	 * @param concept An URI string with no quotes
 	 * @return SortedSet of direct subclasses as String
 	 */
-	private SortedSet<String> getDirectSubClasses(final String concept) {
+	private SortedSet<String> getDirectSubClasses(String concept) {
 
 		String sparqlQueryString;
 		SortedSet<String> subClasses = new TreeSet<String>();
@@ -212,25 +210,31 @@
 	 * QUALITY: buggy because role doesn't work sometimes get subject with fixed
 	 * role and object
 	 * 
-	 * @param role
-	 * @param object
-	 * @param resultLimit
-	 * @return
+	 * @param role An URI string with no quotes
+	 * @param object An URI string with no quotes
+	 * @param sparqlResultLimit Limits the ResultSet size
+	 * @return SortedSet with the resulting subjects
 	 */
 	public SortedSet<String> retrieveDISTINCTSubjectsForRoleAndObject(
-			String role, String object, int resultLimit) {
+			String role, String object, int sparqlResultLimit) {
 		String sparqlQueryString = "SELECT DISTINCT * WHERE { \n " + "?subject "
 				+ "<" + role + "> " + "<" + object + "> \n" + "} "
-				+ limit(resultLimit);
+				+ limit(sparqlResultLimit);
 
 		return queryAsSet(sparqlQueryString, "subject");
 	}
 
+	/**
+	 * @param subject An URI string with no quotes
+	 * @param role An URI string with no quotes
+	 * @param sparqlResultLimit Limits the ResultSet size
+	 * @return
+	 */
 	public SortedSet<String> retrieveObjectsForSubjectAndRole(String subject,
-			String role, int resultLimit) {
+			String role, int sparqlResultLimit) {
 		String sparqlQueryString = "SELECT DISTINCT * WHERE { \n " + "<" + subject
 				+ "> " + "<" + role + "> " + " ?object \n" + "} LIMIT "
-				+ resultLimit;
+				+ sparqlResultLimit;
 
 		return queryAsSet(sparqlQueryString, "object");
 	}
@@ -238,14 +242,14 @@
 	/**
 	 * all instances for a SKOS concept.
 	 * 
-	 * @param skosConcept
-	 * @param resultLimit
+	 * @param skosConcept An URI string with no quotes
+	 * @param sparqlResultLimit Limits the ResultSet size
 	 * @return
 	 */
 	public SortedSet<String> retrieveInstancesForSKOSConcept(
-			String skosConcept, int resultLimit) {
+			String skosConcept, int sparqlResultLimit) {
 		return queryPatternAsSet("?subject", "?predicate", "<" + skosConcept
-				+ ">", "subject", resultLimit);
+				+ ">", "subject", sparqlResultLimit);
 		// return
 		// retrieveDISTINCTSubjectsForRoleAndObject("http://www.w3.org/2004/02/skos/core#subject",
 	}
@@ -253,8 +257,8 @@
 	/**
 	 * get all instances for a concept.
 	 * 
-	 * @param conceptKBSyntax
-	 * @param sparqlResultLimit
+	 * @param conceptKBSyntax A description string in KBSyntax
+	 * @param sparqlResultLimit Limits the ResultSet size
 	 * @return
 	 */
 	public SortedSet<String> retrieveInstancesForConcept(
@@ -273,8 +277,8 @@
 	/**
 	 * get all instances for a concept including RDFS Reasoning.
 	 * 
-	 * @param conceptKBSyntax
-	 * @param sparqlResultLimit
+	 * @param conceptKBSyntax A description string in KBSyntax
+	 * @param sparqlResultLimit Limits the ResultSet size
 	 * @return
 	 */
 	public SortedSet<String> retrieveInstancesForConceptIncludingSubclasses(
@@ -295,15 +299,15 @@
 	/**
 	 * get all direct Classes of an instance.
 	 * 
-	 * @param instance
-	 * @param resultLimit
+	 * @param instance An URI string with no quotes
+	 * @param sparqlResultLimit Limits the ResultSet size
 	 * @return
 	 */
 	public SortedSet<String> getClassesForInstance(String instance,
-			int resultLimit) {
+			int sparqlResultLimit) {
 
 		String sparqlQueryString = "SELECT ?subject WHERE { \n " + "<" + instance
-				+ ">" + " a " + "?subject " + "\n" + "} " + limit(resultLimit);
+				+ ">" + " a " + "?subject " + "\n" + "} " + limit(sparqlResultLimit);
 
 		return queryAsSet(sparqlQueryString, "subject");
 	}
@@ -329,13 +333,15 @@
 	}
 
 	/**
-	 * query a pattern with a standard SPARQL query usage (?subject, ?predicate,
+	 * //QUALITY rethink
+	 * query a pattern with a standard SPARQL query.
+	 * usage (?subject, <http://something>,
 	 * <http://something> , subject ).
 	 * 
-	 * @param subject
-	 * @param predicate
-	 * @param object
-	 * @param var
+	 * @param subject An URI string with no quotes
+	 * @param predicate An URI string with no quotes
+	 * @param object An URI string with no quotes
+	 * @param var The single 
 	 * @return
 	 */
 	public SortedSet<String> queryPatternAsSet(String subject,
@@ -349,15 +355,15 @@
 	/**
 	 * little higher level, executes query ,returns all resources for a variable.
 	 * 
-	 * @param sparqlQueryString
-	 * @param var
+	 * @param sparqlQueryString The query
+	 * @param var The single variable used in the query
 	 * @return
 	 */
 	public SortedSet<String> queryAsSet(String sparqlQueryString, String var) {
 		ResultSet rs = null;
 		try {
 			String jsonString = query(sparqlQueryString);
-			rs = SparqlQuery.JSONtoResultSet(jsonString);
+			rs = SparqlQuery.convertJSONtoResultSet(jsonString);
 
 		} catch (Exception e) {
 			logger.warn(e.getMessage());
@@ -368,18 +374,18 @@
 	/**
 	 * low level, executes query returns ResultSet.
 	 * 
-	 * @param sparqlQueryString
+	 * @param sparqlQueryString The query
 	 * @return jena ResultSet
 	 */
 	public ResultSet queryAsResultSet(String sparqlQueryString) {
-		return SparqlQuery.JSONtoResultSet(query(sparqlQueryString));
+		return SparqlQuery.convertJSONtoResultSet(query(sparqlQueryString));
 
 	}
 
 	/**
 	 * low level, executes query returns JSON.
 	 * 
-	 * @param sparqlQueryString
+	 * @param sparqlQueryString The query
 	 * @return
 	 */
 	public String query(String sparqlQueryString) {

Modified: trunk/src/dl-learner/org/dllearner/kb/sparql/SparqlEndpoint.java
===================================================================
--- trunk/src/dl-learner/org/dllearner/kb/sparql/SparqlEndpoint.java	2008-07-29 14:30:25 UTC (rev 1024)
+++ trunk/src/dl-learner/org/dllearner/kb/sparql/SparqlEndpoint.java	2008-07-30 06:53:34 UTC (rev 1025)
@@ -25,7 +25,7 @@
 
 /**
  * One sparql endpoint configuration,
- * made to comply with Jena
+ * made to comply with Jena.
  * 
  * @author Sebastian Hellmann
  *
@@ -42,7 +42,7 @@
 		this.namedGraphURIs=new LinkedList<String>();
 	}
 	
-	public SparqlEndpoint(URL u,List<String> defaultGraphURIs,List<String> namedGraphURIs) {
+	public SparqlEndpoint(URL u, List<String> defaultGraphURIs, List<String> namedGraphURIs) {
 		this.url = u;
 		this.defaultGraphURIs=defaultGraphURIs;
 		this.namedGraphURIs=namedGraphURIs;
@@ -86,57 +86,59 @@
 
 		name = name.toUpperCase();
 		
-		if (name.equals("DBPEDIA"))
-			return EndpointDBpedia();
-		if (name.equals("LOCALDBPEDIA"))
-			return EndpointLOCALDBpedia();
-		if (name.equals("LOCALJOSECKI"))
-			return EndpointlocalJoseki();
-		if (name.equals("GOVTRACK"))
-			return EndpointGovTrack();
-		if (name.equals("SPARQLETTE"))
-			return EndpointSparqlette();
-		if (name.equals("SWCONFERENCE"))
-			return EndpointSWConference();
-		if (name.equals("REVYU"))
-			return EndpointRevyu();
-		if (name.equals("MYOPENLINK"))
-			return EndpointMyOpenlink();
-		if (name.equals("FACTBOOK"))
-			return EndpointWorldFactBook();
-		if (name.equals("DBLP"))
-			return EndpointDBLP();
-		if (name.equals("MUSICBRAINZ"))
-			return EndpointMusicbrainz();
-		return null;
+		if (name.equals("DBPEDIA")) {
+			return getEndpointDBpedia();
+		} else if (name.equals("LOCALDBPEDIA")) {
+			return getEndpointLOCALDBpedia();
+		} else if (name.equals("LOCALJOSECKI")) {
+			return getEndpointlocalJoseki();
+		} else if (name.equals("GOVTRACK")) {
+			return getEndpointGovTrack();
+		} else if (name.equals("SPARQLETTE")) {
+			return getEndpointSparqlette();
+		} else if (name.equals("SWCONFERENCE")) {
+			return getEndpointSWConference();
+		} else if (name.equals("REVYU")) {
+			return getEndpointRevyu();
+		} else if (name.equals("MYOPENLINK")) {
+			return getEndpointMyOpenlink();
+		} else if (name.equals("FACTBOOK")) {
+			return getEndpointWorldFactBook();
+		} else if (name.equals("DBLP")) {
+			return getEndpointDBLP();
+		} else if (name.equals("MUSICBRAINZ")) {
+			return getEndpointMusicbrainz();
+		} else {
+			return null;
+			}
 	}
 	
 	
-	public static LinkedList<SparqlEndpoint> listEndpoints() {
+	public static List<SparqlEndpoint> listEndpoints() {
 		LinkedList<SparqlEndpoint> ll =new LinkedList<SparqlEndpoint>();
-		ll.add(EndpointDBLP());
-		ll.add(EndpointDBpedia());
-		ll.add(EndpointDOAPspace());
-		ll.add(EndpointGovTrack());
-		ll.add(EndpointJamendo());
-		ll.add(EndpointJohnPeel());
-		ll.add(EndpointlocalJoseki());
-		ll.add(EndpointMagnaTune());
-		ll.add(EndpointMusicbrainz());
-		ll.add(EndpointMyOpenlink());
-		ll.add(EndpointRevyu());
-		ll.add(EndpointSWConference());
-		ll.add(EndpointUSCensus());
-		ll.add(EndpointWorldFactBook());
-		ll.add(EndpointRiese());
-		ll.add(EndpointTalisBlogs());
-		ll.add(EndpointSWSchool());
-		ll.add(EndpointSparqlette());
-		ll.add(EndpointLOCALDBpedia());
+		ll.add(getEndpointDBLP());
+		ll.add(getEndpointDBpedia());
+		ll.add(getEndpointDOAPspace());
+		ll.add(getEndpointGovTrack());
+		ll.add(getEndpointJamendo());
+		ll.add(getEndpointJohnPeel());
+		ll.add(getEndpointlocalJoseki());
+		ll.add(getEndpointMagnaTune());
+		ll.add(getEndpointMusicbrainz());
+		ll.add(getEndpointMyOpenlink());
+		ll.add(getEndpointRevyu());
+		ll.add(getEndpointSWConference());
+		ll.add(getEndpointUSCensus());
+		ll.add(getEndpointWorldFactBook());
+		ll.add(getEndpointRiese());
+		ll.add(getEndpointTalisBlogs());
+		ll.add(getEndpointSWSchool());
+		ll.add(getEndpointSparqlette());
+		ll.add(getEndpointLOCALDBpedia());
 		return ll;
 	}
 	
-	public static SparqlEndpoint EndpointDBpedia() {
+	public static SparqlEndpoint getEndpointDBpedia() {
 		URL u = null;
 		try { 
 			u = new URL("http://dbpedia.openlinksw.com:8890/sparql");
@@ -148,7 +150,7 @@
 		return new SparqlEndpoint(u, defaultGraphURIs, new LinkedList<String>());
 	}
 	
-	public static SparqlEndpoint EndpointLOCALDBpedia() {
+	public static SparqlEndpoint getEndpointLOCALDBpedia() {
 		URL u = null;
 		try { 
 			u = new URL("http://139.18.2.37:8890/sparql");
@@ -160,7 +162,7 @@
 		return new SparqlEndpoint(u, defaultGraphURIs, new LinkedList<String>());
 	}
 
-	public static SparqlEndpoint EndpointlocalJoseki() {
+	public static SparqlEndpoint getEndpointlocalJoseki() {
 		URL u = null;
 		try { 
 			u = new URL("http://localhost:2020/books");
@@ -170,7 +172,7 @@
 		return new SparqlEndpoint(u, new LinkedList<String>(), new LinkedList<String>());
 	}
 	
-	public static SparqlEndpoint EndpointWorldFactBook() {
+	public static SparqlEndpoint getEndpointWorldFactBook() {
 		URL u = null;
 		try { 
 			u = new URL("http://www4.wiwiss.fu-berlin.de/factbook/sparql");
@@ -181,7 +183,7 @@
 	}
 	
 
-	public static SparqlEndpoint EndpointGovTrack() {
+	public static SparqlEndpoint getEndpointGovTrack() {
 		URL u = null;
 		try { 
 			u = new URL("http://www.rdfabout.com/sparql");
@@ -191,7 +193,7 @@
 		return new SparqlEndpoint(u, new LinkedList<String>(), new LinkedList<String>());
 	}
 	
-	public static SparqlEndpoint EndpointRevyu() {
+	public static SparqlEndpoint getEndpointRevyu() {
 		URL u = null;
 		try { 
 			u = new URL("http://revyu.com/sparql");
@@ -201,7 +203,7 @@
 		return new SparqlEndpoint(u, new LinkedList<String>(), new LinkedList<String>());
 	}
 	
-	public static SparqlEndpoint EndpointMyOpenlink() {
+	public static SparqlEndpoint getEndpointMyOpenlink() {
 		URL u = null;
 		try { 
 			u = new URL("http://myopenlink.net:8890/sparql/");
@@ -214,7 +216,7 @@
 
 		}
 	
-	public static SparqlEndpoint EndpointDOAPspace() {
+	public static SparqlEndpoint getEndpointDOAPspace() {
 		URL u = null;
 		try { 
 			u = new URL("http://doapspace.org/sparql");
@@ -226,7 +228,7 @@
 
 		}
 	
-	public static SparqlEndpoint EndpointJohnPeel() {
+	public static SparqlEndpoint getEndpointJohnPeel() {
 		URL u = null;
 		try { 
 			u = new URL("http://dbtune.org:3030/sparql/");
@@ -240,7 +242,7 @@
 	
 	
 	
-		public static SparqlEndpoint EndpointSWConference() {
+		public static SparqlEndpoint getEndpointSWConference() {
 		URL u = null;
 		try { 
 			u = new URL("http://data.semanticweb.org:8080/openrdf-sesame/repositories/SWC");
@@ -275,7 +277,7 @@
 		return new SpecificSparqlEndpoint(u, "dbtune.org", m);
 	}*/
 	
-	 public static SparqlEndpoint EndpointJamendo() {
+	 public static SparqlEndpoint getEndpointJamendo() {
 			URL u = null;
 			try { 
 				u = new URL("http://dbtune.org:2105/sparql/");
@@ -287,7 +289,7 @@
 	
 	 
 		 
-	 public static SparqlEndpoint EndpointMagnaTune() {
+	 public static SparqlEndpoint getEndpointMagnaTune() {
 		URL u = null;
 		try { 
 			u = new URL("http://dbtune.org:2020/sparql/");
@@ -298,7 +300,7 @@
 	}
 	
 	 
-	 public static SparqlEndpoint EndpointMusicbrainz() {
+	 public static SparqlEndpoint getEndpointMusicbrainz() {
 		 URL u = null;
 		 try { 
 			 u = new URL("http://dbtune.org/musicbrainz/sparql");
@@ -308,7 +310,7 @@
 		 return new SparqlEndpoint(u);
 	 }
 	 
-	 public static SparqlEndpoint EndpointRiese() {
+	 public static SparqlEndpoint getEndpointRiese() {
 		 URL u = null;
 		 try { 
 			 u = new URL("http://riese.joanneum.at:3020/");
@@ -319,7 +321,7 @@
 	 }
 	
 	 
-	 public static SparqlEndpoint EndpointUSCensus() {
+	 public static SparqlEndpoint getEndpointUSCensus() {
 		 URL u = null;
 		 try { 
 			 u = new URL("http://www.rdfabout.com/sparql");
@@ -337,7 +339,7 @@
 	/*
 	 * it only has 4 classes
 	 */
-	 public static SparqlEndpoint EndpointDBLP() {
+	 public static SparqlEndpoint getEndpointDBLP() {
 		URL u = null;
 		try { 
 			u = new URL("http://www4.wiwiss.fu-berlin.de/dblp/sparql");
@@ -348,7 +350,7 @@
 	}
 	 
 	 
-	 public static SparqlEndpoint EndpointTalisBlogs() {
+	 public static SparqlEndpoint getEndpointTalisBlogs() {
 			URL u = null;
 			try { 
 				u = new URL("http://api.talis.com/stores/talisians/services/sparql");
@@ -358,7 +360,7 @@
 			return new SparqlEndpoint(u);
 		}
 	 
-	 public static SparqlEndpoint EndpointSparqlette() {
+	 public static SparqlEndpoint getEndpointSparqlette() {
 			URL u = null;
 			try { 
 				u = new URL("http://www.wasab.dk/morten/2005/04/sparqlette/");
@@ -370,7 +372,7 @@
 	 
 	 
 	 
-	 public static SparqlEndpoint EndpointSWSchool() {
+	 public static SparqlEndpoint getEndpointSWSchool() {
 			URL u = null;
 			try { 
 				u = new URL("http://sparql.semantic-web.at/snorql/");

Modified: trunk/src/dl-learner/org/dllearner/kb/sparql/SparqlKnowledgeSource.java
===================================================================
--- trunk/src/dl-learner/org/dllearner/kb/sparql/SparqlKnowledgeSource.java	2008-07-29 14:30:25 UTC (rev 1024)
+++ trunk/src/dl-learner/org/dllearner/kb/sparql/SparqlKnowledgeSource.java	2008-07-30 06:53:34 UTC (rev 1025)
@@ -118,7 +118,7 @@
 			.getLogger(SparqlKnowledgeSource.class);
 
 	/**
-	 * sets the ConfigOptions for this KnowledgeSource
+	 * sets the ConfigOptions for this KnowledgeSource.
 	 * 
 	 * @return
 	 */
@@ -195,7 +195,7 @@
 	 * @see org.dllearner.core.Component#applyConfigEntry(org.dllearner.core.ConfigEntry)
 	 */
 	@Override
-	@SuppressWarnings( { "unchecked" })
+	@SuppressWarnings({ "unchecked" })
 	public <T> void applyConfigEntry(ConfigEntry<T> entry)
 			throws InvalidConfigOptionValueException {
 		String option = entry.getOptionName();
@@ -348,9 +348,10 @@
 				String filename = System.currentTimeMillis() + ".nt";
 				String basedir = "cache" + File.separator;
 				try {
-					if (!new File(basedir).exists())
+					if (!new File(basedir).exists()) {
 						new File(basedir).mkdir();
-
+					}
+					
 					FileWriter fw = new FileWriter(
 							new File(basedir + filename), true);
 					fw.write(ont);
@@ -441,7 +442,7 @@
 		return dumpFile;
 	}
 	
-	public boolean getUseCache(){
+	public boolean isUseCache(){
 		return useCache;
 	}
 	

Modified: trunk/src/dl-learner/org/dllearner/kb/sparql/SparqlQuery.java
===================================================================
--- trunk/src/dl-learner/org/dllearner/kb/sparql/SparqlQuery.java	2008-07-29 14:30:25 UTC (rev 1024)
+++ trunk/src/dl-learner/org/dllearner/kb/sparql/SparqlQuery.java	2008-07-30 06:53:34 UTC (rev 1025)
@@ -49,50 +49,48 @@
 
 	private boolean wasExecuted = false;
 
-	private String queryString;
+	private String sparqlQueryString;
 
 	private QueryEngineHTTP queryExecution;
 
-	private SparqlEndpoint endpoint;
+	private SparqlEndpoint sparqlEndpoint;
 
 	private String json = null;
 
 	/**
 	 * Standard constructor.
 	 * 
-	 * @param queryString
-	 * @param endpoint
+	 * @param sparqlQueryString A SPARQL query string
+	 * @param sparqlEndpoint An Endpoint object
 	 */
-	public SparqlQuery(String queryString, SparqlEndpoint endpoint) {
+	public SparqlQuery(String sparqlQueryString, SparqlEndpoint sparqlEndpoint) {
 		// QUALITY there seems to be a bug in ontowiki
-		this.queryString = queryString.replaceAll("\n", " ");
-		this.endpoint = endpoint;
+		this.sparqlQueryString = sparqlQueryString.replaceAll("\n", " ");
+		this.sparqlEndpoint = sparqlEndpoint;
 	}
 
 	/**
 	 * Sends a SPARQL query using the Jena library. main format is JSON, use
 	 * method getasjson
 	 * 
-	 * @return nothing
 	 */
-
 	public void send() {
 		wasExecuted = true;
 		// isRunning = true;
 		ResultSet rs;
 
 		writeToSparqlLog("***********\nNew Query:");
-		writeToSparqlLog(queryString);
-		writeToSparqlLog(endpoint.getURL().toString());
+		writeToSparqlLog(sparqlQueryString);
+		writeToSparqlLog(sparqlEndpoint.getURL().toString());
 
-		String service = endpoint.getURL().toString();
+		String service = sparqlEndpoint.getURL().toString();
 
 		// Jena access to SPARQL endpoint
-		queryExecution = new QueryEngineHTTP(service, queryString);
-		for (String dgu : endpoint.getDefaultGraphURIs()) {
+		queryExecution = new QueryEngineHTTP(service, sparqlQueryString);
+		for (String dgu : sparqlEndpoint.getDefaultGraphURIs()) {
 			queryExecution.addDefaultGraph(dgu);
 		}
-		for (String ngu : endpoint.getNamedGraphURIs()) {
+		for (String ngu : sparqlEndpoint.getNamedGraphURIs()) {
 			queryExecution.addNamedGraph(ngu);
 		}
 
@@ -108,12 +106,12 @@
 		rs = queryExecution.execSelect();
 		JamonMonitorLogger.getTimeMonitor(SparqlQuery.class, "httpTime").stop();
 
-		logger.debug("query length: " + queryString.length() + " | ENDPOINT: "
-				+ endpoint.getURL().toString());
+		logger.debug("query length: " + sparqlQueryString.length() + " | ENDPOINT: "
+				+ sparqlEndpoint.getURL().toString());
 		// writeToSparqlLog("query: "+queryString+ " | ENDPOINT:
 		// "+endpoint.getURL().toString());
 
-		json = SparqlQuery.getAsJSON(rs);
+		json = SparqlQuery.convertResultSetToJSON(rs);
 
 		writeToSparqlLog("JSON: " + json);
 
@@ -121,90 +119,129 @@
 
 	}
 
+	/**
+	 * Stops the execution of the query.
+	 */
 	public void stop() {
 		queryExecution.abort();
 		isRunning = false;
 	}
 
-	public String getQueryString() {
-		return queryString;
+	/**
+	 * Gets the String representation of the SPARQL query.
+	 * @return sparqlQueryString
+	 */
+	public String getSparqlQueryString() {
+		return sparqlQueryString;
 	}
 
-	public SparqlEndpoint getEndpoint() {
-		return endpoint;
+	/**
+	 * @return sparqlEndpoint object
+	 */
+	public SparqlEndpoint getSparqlEndpoint() {
+		return sparqlEndpoint;
 	}
 
+	/**
+	 * 
+	 * @return boolean
+	 */
 	public boolean isRunning() {
 		return isRunning;
 	}
 
+	/**
+	 * @return the Jena QueryEngineHTTP
+	 */
 	public QueryEngineHTTP getExecution() {
 		return queryExecution;
 	}
 
+	/**
+	 * insert a result, e.g. from the cache
+	 * @param json a jsonString
+	 */
 	public void setJson(String json) {
 		this.wasExecuted = true;
 		this.json = json;
 	}
 
+	/**
+	 * @param running s.e.
+	 */
 	public void setRunning(boolean running) {
 		this.isRunning = running;
 	}
 
 	/**
 	 * returns the Result of the query as JSON string executes the query if it
-	 * wasn't executed before
+	 * wasn't executed before.
 	 * 
-	 * @return
+	 * @return a JSON string
 	 */
 	public String getJson() {
-		if (wasExecuted == false) {
+		if (!wasExecuted) {
 			this.send();
 		}
 		return json;
 	}
 
 	/**
-	 * makes a ResultSet from the Json String, depends on getJSON
+	 * makes a ResultSet from the Json String, depends on getJSON.
 	 * 
-	 * @return
+	 * @return a Jena ResultSet
 	 */
 	public ResultSet getResultSet() {
-		if (getJson() == null) {
-			return null;
+		return (getJson() == null) ? null : convertJSONtoResultSet(json);
+		
+		/*if (getJson() == null) {
+		return null;
 		} else
-			return JSONtoResultSet(json);
+		return JSONtoResultSet(json);*/
 	}
 
 	/**
-	 * makes an XML String from the Json String, depends on getJSON
+	 * makes an XML String from the Json String, depends on getJSON.
 	 * 
-	 * @return
+	 * @return An XML String
 	 */
 	public String getXMLString() {
-		if (getJson() == null) {
+		return (getJson() == null) ? null : convertJSONtoXML(json);
+		
+		/*if (getJson() == null) {
 			return null;
 		} else
-			return JSONtoXML(json);
+			return JSONtoXML(json);*/
 	}
 
+	/**
+	 * Special log for debugging SPARQL query execution.
+	 * It lives here: "log/sparql.txt"
+	 * if the directory doesn't exist, there could be an error.
+	 * @param s the String to log
+	 */
 	public static void writeToSparqlLog(String s) {
 		try {
+			//
 			FileWriter fw = new FileWriter("log/sparql.txt", true);
 			fw.write(s + "\n");
 			fw.flush();
 			fw.close();
 		} catch (Exception e) {
 			e.printStackTrace();
+			// make the e object more special FileNotFound??
+			//new File("log").mkdir();
+			//writeToSparqlLog(s);
 		}
 	}
 
+
 	/**
 	 * Converts Jena result set to XML.
-	 * 
+	 * @param resultSet  a Jena ResultSet
 	 * @return String xml
 	 */
-	public static String getAsXMLString(ResultSet resultSet) {
+	public static String convertResultSetToXMLString(ResultSet resultSet) {
 		// if (rs == null)
 		// this.send();
 		return ResultSetFormatter.asXMLString(resultSet);
@@ -217,14 +254,14 @@
 	 *            The result set to transform.
 	 * @return JSON representation of the result set.
 	 */
-	public static String getAsJSON(ResultSet resultSet) {
+	public static String convertResultSetToJSON(ResultSet resultSet) {
 		// if (rs == null)
 		// this.send();
 		ByteArrayOutputStream baos = new ByteArrayOutputStream();
 		ResultSetFormatter.outputAsJSON(baos, resultSet);
 		// possible Jena bug: Jena modifies the result set during
 		// JSON transformation, so we need to get it back
-		resultSet = JSONtoResultSet(baos.toString());
+		resultSet = convertJSONtoResultSet(baos.toString());
 		try {
 			return baos.toString("UTF-8");
 		} catch (UnsupportedEncodingException e) {
@@ -240,7 +277,7 @@
 	 *            A JSON representation if a SPARQL query result.
 	 * @return A Jena ResultSet.
 	 */
-	public static ResultSet JSONtoResultSet(String json) {
+	public static ResultSet convertJSONtoResultSet(String json) {
 		ByteArrayInputStream bais = new ByteArrayInputStream(json
 				.getBytes(Charset.forName("UTF-8")));
 		// System.out.println("JSON " + json);
@@ -254,7 +291,7 @@
 	 *            A JSON representation if a SPARQL query result.
 	 * @return A Jena ResultSet.
 	 */
-	public static String JSONtoXML(String json) {
-		return getAsXMLString(JSONtoResultSet(json));
+	public static String convertJSONtoXML(String json) {
+		return convertResultSetToXMLString(convertJSONtoResultSet(json));
 	}
 }

Modified: trunk/src/dl-learner/org/dllearner/scripts/SKOS7030.java
===================================================================
--- trunk/src/dl-learner/org/dllearner/scripts/SKOS7030.java	2008-07-29 14:30:25 UTC (rev 1024)
+++ trunk/src/dl-learner/org/dllearner/scripts/SKOS7030.java	2008-07-30 06:53:34 UTC (rev 1025)
@@ -111,28 +111,18 @@
 		// String resultString="";
 		// System.out.println(time());
 		// System.out.println(System.currentTimeMillis());
-		String[] a = new String[2];
-		int x1=0;
-		try {
-			while(true)
-			a[x1++]="";
-		} catch (Exception e) {
-			e.printStackTrace();
-			
-		}
 		
-		System.exit(0);
 		
 		// parameters
 
 		if (local) {
 			url = "http://139.18.2.37:8890/sparql";
 			sparqlTasks = new SPARQLTasks(Cache.getPersistentCache(),
-					SparqlEndpoint.EndpointLOCALDBpedia());
+					SparqlEndpoint.getEndpointLOCALDBpedia());
 		} else {
 			url = "http://dbpedia.openlinksw.com:8890/sparql";
 			sparqlTasks = new SPARQLTasks(Cache.getPersistentCache(),
-					SparqlEndpoint.EndpointDBpedia());
+					SparqlEndpoint.getEndpointDBpedia());
 		}
 
 		//System.out.println(sparqlTasks.getDomain(

Modified: trunk/src/dl-learner/org/dllearner/scripts/SPARQLExtractionEvaluation.java
===================================================================
--- trunk/src/dl-learner/org/dllearner/scripts/SPARQLExtractionEvaluation.java	2008-07-29 14:30:25 UTC (rev 1024)
+++ trunk/src/dl-learner/org/dllearner/scripts/SPARQLExtractionEvaluation.java	2008-07-30 06:53:34 UTC (rev 1025)
@@ -61,12 +61,12 @@
 		SimpleClock total =new SimpleClock();
 		String  url="";
 		if(local){
-			se = SparqlEndpoint.EndpointLOCALDBpedia();
+			se = SparqlEndpoint.getEndpointLOCALDBpedia();
 			
 			 url = "http://139.18.2.37:8890/sparql";
 			
 		}else{
-			se = SparqlEndpoint.EndpointDBpedia();
+			se = SparqlEndpoint.getEndpointDBpedia();
 			 url= "http://dbpedia.openlinksw.com:8890/sparql";
 		}
 		
@@ -187,7 +187,7 @@
 		" \n} LIMIT "+1000+" \n "; //
 
 		String JSON = (c.executeSparqlQuery(new SparqlQuery(query, se)));
-		ResultSet rs =SparqlQuery.JSONtoResultSet(JSON);
+		ResultSet rs =SparqlQuery.convertJSONtoResultSet(JSON);
 		if(rs==null);
 		//JenaResultSetConvenience rsc = new JenaResultSetConvenience(rs);
 		//return SetManipulation.fuzzyShrink(rsc.getStringListForVariable("concept"),number);

Modified: trunk/src/dl-learner/org/dllearner/scripts/SPARQLMassLearning.java
===================================================================
--- trunk/src/dl-learner/org/dllearner/scripts/SPARQLMassLearning.java	2008-07-29 14:30:25 UTC (rev 1024)
+++ trunk/src/dl-learner/org/dllearner/scripts/SPARQLMassLearning.java	2008-07-30 06:53:34 UTC (rev 1025)
@@ -97,7 +97,7 @@
 	
 	static void roles(){
 		
-		se = SparqlEndpoint.EndpointDBpedia();
+		se = SparqlEndpoint.getEndpointDBpedia();
 		//se = SparqlEndpoint.EndpointUSCensus();
 		SortedSet<String> roles = new TreeSet<String>();
 		roles.add("http://dbpedia.org/property/birthPlace");
@@ -143,7 +143,7 @@
 	}
 	
 	static void DBpedia(){
-		se = SparqlEndpoint.EndpointLOCALDBpedia();
+		se = SparqlEndpoint.getEndpointLOCALDBpedia();
 		//concepts.add("(EXISTS \"monarch\".TOP AND EXISTS \"predecessor\".(\"Knight\" OR \"Secretary\"))");
 		
 		SortedSet<String> concepts = new TreeSet<String>();
@@ -257,7 +257,7 @@
 		
 
 		String JSON = (c.executeSparqlQuery(new SparqlQuery(query, se)));
-		ResultSet rs =SparqlQuery.JSONtoResultSet(JSON);
+		ResultSet rs =SparqlQuery.convertJSONtoResultSet(JSON);
 		if(rs==null);
 		//JenaResultSetConvenience rsc = new JenaResultSetConvenience(rs);
 		//return SetManipulation.fuzzyShrink(rsc.getStringListForVariable("concept"),number);

Modified: trunk/src/dl-learner/org/dllearner/server/DLLearnerWS.java
===================================================================
--- trunk/src/dl-learner/org/dllearner/server/DLLearnerWS.java	2008-07-29 14:30:25 UTC (rev 1024)
+++ trunk/src/dl-learner/org/dllearner/server/DLLearnerWS.java	2008-07-30 06:53:34 UTC (rev 1025)
@@ -599,7 +599,7 @@
 		Thread sparqlThread = new Thread() {
 			@Override
 			public void run() {
-				if (ks.getUseCache()){
+				if (ks.isUseCache()){
 					state.getQuery(id).setRunning(true);
 					Cache cache=new Cache(ks.getCacheDir());
 					cache.executeSparqlQuery(state.getQuery(id));
@@ -623,7 +623,7 @@
 		Component component = state.getComponent(componentID);
 		SparqlKnowledgeSource ks=(SparqlKnowledgeSource)component;
 		SparqlQuery sparql=ks.sparqlQuery(query);
-		if (ks.getUseCache()){
+		if (ks.isUseCache()){
 			Cache cache=new Cache(ks.getCacheDir());
 			return cache.executeSparqlQuery(sparql);
 		}

Modified: trunk/src/dl-learner/org/dllearner/test/JenaQueryToResultSpeedTest.java
===================================================================
--- trunk/src/dl-learner/org/dllearner/test/JenaQueryToResultSpeedTest.java	2008-07-29 14:30:25 UTC (rev 1024)
+++ trunk/src/dl-learner/org/dllearner/test/JenaQueryToResultSpeedTest.java	2008-07-30 06:53:34 UTC (rev 1025)
@@ -50,7 +50,7 @@
 
 	
 	public static void testJenaAsXML(int howOften, String queryString){
-		SparqlEndpoint sse = SparqlEndpoint.EndpointDBpedia();
+		SparqlEndpoint sse = SparqlEndpoint.getEndpointDBpedia();
 		SparqlQuery sqJena = new SparqlQuery(queryString, sse);
 		// first query is not counted
 		sqJena.send();
@@ -72,7 +72,7 @@
 	}
 	
 	public static void testJenaAsList(int howOften, String queryString){
-		SparqlEndpoint sse = SparqlEndpoint.EndpointDBpedia();
+		SparqlEndpoint sse = SparqlEndpoint.getEndpointDBpedia();
 		SparqlQuery sqJena = new SparqlQuery(queryString, sse);
 		// first query is not counted
 		//sqJena.getAsList();
@@ -96,7 +96,7 @@
 	}
 	
 	public static void testJenaAsJSON(int howOften, String queryString){
-		SparqlEndpoint sse = SparqlEndpoint.EndpointDBpedia();
+		SparqlEndpoint sse = SparqlEndpoint.getEndpointDBpedia();
 		SparqlQuery sqJena = new SparqlQuery(queryString, sse);
 		// first query is not counted
 		sqJena.send();
@@ -119,7 +119,7 @@
 	}
 	
 	public static void testJenaAsJSONandBack(int howOften, String queryString){
-		SparqlEndpoint sse = SparqlEndpoint.EndpointDBpedia();
+		SparqlEndpoint sse = SparqlEndpoint.getEndpointDBpedia();
 		SparqlQuery sqJena = new SparqlQuery(queryString, sse);
 		// first query is not counted
 		sqJena.send();
@@ -131,7 +131,7 @@
 		//	System.out.println(sqJena.getAsJSON());
 		    	sqJena.send();
 			String json = sqJena.getJson();
-			SparqlQuery.JSONtoResultSet(json);
+			SparqlQuery.convertJSONtoResultSet(json);
 			p("Jena as JSON and back needed: "
 					+ (System.currentTimeMillis() - tmp));
 			tmp = System.currentTimeMillis();
@@ -145,7 +145,7 @@
 	
 
 	public static void compareResults(String queryString) {
-		SparqlEndpoint sse = SparqlEndpoint.EndpointDBpedia();
+		SparqlEndpoint sse = SparqlEndpoint.getEndpointDBpedia();
 		SparqlQuery sqJena = new SparqlQuery(queryString, sse);
 		// SparqlQueryConventional sqConv=new SparqlQueryConventional(sse);
 

Modified: trunk/src/dl-learner/org/dllearner/test/SparqlEndpointTest.java
===================================================================
--- trunk/src/dl-learner/org/dllearner/test/SparqlEndpointTest.java	2008-07-29 14:30:25 UTC (rev 1024)
+++ trunk/src/dl-learner/org/dllearner/test/SparqlEndpointTest.java	2008-07-30 06:53:34 UTC (rev 1025)
@@ -1,7 +1,7 @@
 package org.dllearner.test;
 
 import java.util.HashSet;
-import java.util.LinkedList;
+import java.util.List;
 import java.util.Set;
 import java.util.SortedSet;
 
@@ -36,7 +36,7 @@
 		//SELECT DISTINCT ?c WHERE {[] a ?c }LIMIT 100
 		
 		
-		LinkedList<SparqlEndpoint> ll  = SparqlEndpoint.listEndpoints();
+		List<SparqlEndpoint> ll  = SparqlEndpoint.listEndpoints();
 		
 		
 		


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