[DL-Learner SVN] SF.net SVN: dl-learner:[4282] trunk/components-core/src/main/java/org/ dllearner/kb/sparql/BlanknodeResolvingCBDGenerator.java

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

Revision: 4282
          http://sourceforge.net/p/dl-learner/code/4282
Author:   lorenz_b
Date:     2014-07-29 13:56:03 +0000 (Tue, 29 Jul 2014)
Log Message:
-----------
Added punning test.

Added Paths:
-----------
    trunk/components-core/src/main/java/org/dllearner/kb/sparql/BlanknodeResolvingCBDGenerator.java

Added: trunk/components-core/src/main/java/org/dllearner/kb/sparql/BlanknodeResolvingCBDGenerator.java
===================================================================
--- trunk/components-core/src/main/java/org/dllearner/kb/sparql/BlanknodeResolvingCBDGenerator.java	                        (rev 0)
+++ trunk/components-core/src/main/java/org/dllearner/kb/sparql/BlanknodeResolvingCBDGenerator.java	2014-07-29 13:56:03 UTC (rev 4282)
@@ -0,0 +1,100 @@
+/**
+ * 
+ */
+package org.dllearner.kb.sparql;
+
+import java.util.List;
+
+import org.aksw.jena_sparql_api.model.QueryExecutionFactoryModel;
+
+import com.hp.hpl.jena.query.ParameterizedSparqlString;
+import com.hp.hpl.jena.query.QueryExecution;
+import com.hp.hpl.jena.rdf.model.Model;
+
+/**
+ * @author Lorenz Buehmann
+ *
+ */
+public class BlanknodeResolvingCBDGenerator implements ConciseBoundedDescriptionGenerator{
+	
+	private QueryExecutionFactoryModel qef;
+	boolean resolveBlankNodes = true;
+
+	public BlanknodeResolvingCBDGenerator(Model model) {
+		String query = "prefix : <http://dl-learner.org/ontology/> "
+				+ "construct { ?s ?p ?o ; ?type ?s .} "
+				+ "where {  ?s ?p ?o .  bind( if(isIRI(?s),:sameIri,:sameBlank) as ?type )}";
+		qef = new QueryExecutionFactoryModel(model);
+		QueryExecution qe = qef.createQueryExecution(query);
+		Model extendedModel = qe.execConstruct();
+		qe.close();
+		
+		qef = new QueryExecutionFactoryModel(extendedModel);
+	}
+
+	/* (non-Javadoc)
+	 * @see org.dllearner.kb.sparql.ConciseBoundedDescriptionGenerator#getConciseBoundedDescription(java.lang.String)
+	 */
+	@Override
+	public Model getConciseBoundedDescription(String resourceURI) {
+		return getConciseBoundedDescription(resourceURI, 0);
+	}
+
+	/* (non-Javadoc)
+	 * @see org.dllearner.kb.sparql.ConciseBoundedDescriptionGenerator#getConciseBoundedDescription(java.lang.String, int)
+	 */
+	@Override
+	public Model getConciseBoundedDescription(String resourceURI, int depth) {
+		return getConciseBoundedDescription(resourceURI, depth, false);
+	}
+
+	/* (non-Javadoc)
+	 * @see org.dllearner.kb.sparql.ConciseBoundedDescriptionGenerator#getConciseBoundedDescription(java.lang.String, int, boolean)
+	 */
+	@Override
+	public Model getConciseBoundedDescription(String resourceURI, int depth, boolean withTypesForLeafs) {
+		StringBuilder constructTemplate = new StringBuilder("?s0 ?p0 ?o0 .");
+		for(int i = 1; i <= depth; i++){
+			constructTemplate.append("?o").append(i-1).append(" ?p").append(i).append(" ?o").append(i).append(" .");
+		}
+		
+		StringBuilder triplesTemplate = new StringBuilder("?s0 ?p0 ?o0 .");
+		for(int i = 1; i <= depth; i++){
+			triplesTemplate.append("OPTIONAL{").append("?o").append(i-1).append(" ?p").append(i).append(" ?o").append(i).append(" .");
+		}
+		if(resolveBlankNodes){
+			triplesTemplate.append("?o").append(depth).append("((!<x>|!<y>)/:sameBlank)* ?x . ?x ?px ?ox .filter(!(?p in (:sameIri, :sameBlank)))");
+		}
+		for(int i = 1; i <= depth; i++){
+			triplesTemplate.append("}");
+		}
+		
+		
+		StringBuilder queryString = new StringBuilder("prefix : <http://dl-learner.org/ontology/> ");
+		queryString.append("CONSTRUCT{").append(constructTemplate).append("}");
+		queryString.append(" WHERE {").append(triplesTemplate).append("}");
+		
+		ParameterizedSparqlString query = new ParameterizedSparqlString(queryString.toString());
+		query.setIri("s0", resourceURI);
+		System.out.println(query);
+		QueryExecution qe = qef.createQueryExecution(query.toString());
+		Model cbd = qe.execConstruct();
+		qe.close();
+		return cbd;
+	}
+
+	/* (non-Javadoc)
+	 * @see org.dllearner.kb.sparql.ConciseBoundedDescriptionGenerator#setRestrictToNamespaces(java.util.List)
+	 */
+	@Override
+	public void setRestrictToNamespaces(List<String> namespaces) {
+	}
+
+	/* (non-Javadoc)
+	 * @see org.dllearner.kb.sparql.ConciseBoundedDescriptionGenerator#setRecursionDepth(int)
+	 */
+	@Override
+	public void setRecursionDepth(int maxRecursionDepth) {
+	}
+
+}

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