[DL-Learner SVN] SF.net SVN: dl-learner:[4220] trunk/components-core/src/main/java/org/ dllearner/reasoning/SPARQLReasoner.java

[<lor...@us...>]

Revision: 4220
          http://sourceforge.net/p/dl-learner/code/4220
Author:   lorenz_b
Date:     2014-02-08 12:46:48 +0000 (Sat, 08 Feb 2014)
Log Message:
-----------
Added method to get properties used by instances of given class.

Modified Paths:
--------------
    trunk/components-core/src/main/java/org/dllearner/reasoning/SPARQLReasoner.java

Modified: trunk/components-core/src/main/java/org/dllearner/reasoning/SPARQLReasoner.java
===================================================================
--- trunk/components-core/src/main/java/org/dllearner/reasoning/SPARQLReasoner.java	2014-02-03 14:41:54 UTC (rev 4219)
+++ trunk/components-core/src/main/java/org/dllearner/reasoning/SPARQLReasoner.java	2014-02-08 12:46:48 UTC (rev 4220)
@@ -150,6 +150,10 @@
 		}
 	}
 	
+	public SPARQLReasoner(SparqlEndpoint endpoint, String cacheDirectory) {
+		this(new SparqlEndpointKS(endpoint), cacheDirectory);
+	}
+	
 	public SPARQLReasoner(SparqlEndpointKS ks, CacheCoreEx cacheBackend) {
 		this(ks, new CacheExImpl(cacheBackend));
 	}
@@ -1301,6 +1305,34 @@
 		return null;
 	}
 	
+	public Set<ObjectProperty> getObjectPropertiesWithDomain(NamedClass domain) {
+		Set<ObjectProperty> properties = new TreeSet<>();
+		
+		String query = "SELECT ?p WHERE {?p <http://www.w3.org/2000/01/rdf-schema#domain> <" + domain + ">.}";
+		ResultSet rs = executeSelectQuery(query);
+		QuerySolution qs;
+		while(rs.hasNext()){
+			qs = rs.next();
+			properties.add(new ObjectProperty(qs.getResource("p").getURI()));
+		}
+		
+		return properties;
+	}
+	
+	public Set<ObjectProperty> getObjectProperties(NamedClass cls) {
+		Set<ObjectProperty> properties = new TreeSet<>();
+		
+		String query = "SELECT DISTINCT ?p WHERE {?s a <" + cls + ">. ?s ?p ?o}";
+		ResultSet rs = executeSelectQuery(query);
+		QuerySolution qs;
+		while(rs.hasNext()){
+			qs = rs.next();
+			properties.add(new ObjectProperty(qs.getResource("p").getURI()));
+		}
+		
+		return properties;
+	}
+	
 	public SortedSet<NamedClass> getDomains(ObjectProperty objectProperty) {
 		String query = String.format("SELECT ?domain WHERE {" +
 				"<%s> <%s> ?domain. FILTER(isIRI(?domain))" +

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