[DL-Learner SVN] SF.net SVN: dl-learner:[3980] trunk/components-core/src/main/java/org/ dllearner/reasoning/SPARQLReasoner.java

[<moa...@us...>]

Revision: 3980
          http://sourceforge.net/p/dl-learner/code/3980
Author:   moahmedsherif
Date:     2013-05-15 13:09:32 +0000 (Wed, 15 May 2013)
Log Message:
-----------
add getParentClasses() and getChildClasses()

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	2013-05-10 21:55:32 UTC (rev 3979)
+++ trunk/components-core/src/main/java/org/dllearner/reasoning/SPARQLReasoner.java	2013-05-15 13:09:32 UTC (rev 3980)
@@ -498,6 +498,44 @@
 		return siblings;
 	}
 
+	/**
+	 * Returns a set of classes which are Parent of current class
+	 * in the class hierarchy.
+	 * @param cls
+	 * @param limit
+	 * @return
+	 */
+	public Set<NamedClass> getParentClasses(NamedClass cls) {
+		Set<NamedClass> parents = new HashSet<NamedClass>();
+		String query = "SELECT DISTINCT ?parentClass WHERE { <" + cls.getName() + "> <http://www.w3.org/2000/01/rdf-schema#subClassOf> ?parentClass }";
+		ResultSet rs = executeSelectQuery(query);
+		QuerySolution qs;
+		while(rs.hasNext()){
+			qs = rs.next();
+			parents.add(new NamedClass(qs.getResource("parentClass").getURI()));
+		}
+		return parents;
+	}
+	
+	/**
+	 * Returns a set of classes which are children of current class
+	 * in the class hierarchy.
+	 * @param cls
+	 * @param limit
+	 * @return
+	 */
+	public Set<NamedClass> getChildClasses(NamedClass cls) {
+		Set<NamedClass> children = new HashSet<NamedClass>();
+		String query = "SELECT DISTINCT ?childClass WHERE { ?childClass <http://www.w3.org/2000/01/rdf-schema#subClassOf> <" + cls.getName() + ">}";
+		ResultSet rs = executeSelectQuery(query);
+		QuerySolution qs;
+		while(rs.hasNext()){
+			qs = rs.next();
+			children.add(new NamedClass(qs.getResource("childClass").getURI()));
+		}
+		return children;
+	}
+	
 	@Override
 	public boolean hasType(Description description, Individual individual) {
 		if(!(description instanceof NamedClass)){

This was sent by the SourceForge.net collaborative development platform, the world's largest Open Source development site.