From 9ce65c5a963b03ee97fe9cb6c5aa65a3c04a80a8 Mon Sep 17 00:00:00 2001
From: yzhou <yujiao.zhou@gmail.com>
Date: Tue, 21 Apr 2015 10:34:27 +0100
Subject: initial version

---
 .../pagoda/reasoner/light/RDFoxAnswerTuples.java   | 100 +++++++++++++++++++++
 1 file changed, 100 insertions(+)
 create mode 100644 src/uk/ac/ox/cs/pagoda/reasoner/light/RDFoxAnswerTuples.java

(limited to 'src/uk/ac/ox/cs/pagoda/reasoner/light/RDFoxAnswerTuples.java')

diff --git a/src/uk/ac/ox/cs/pagoda/reasoner/light/RDFoxAnswerTuples.java b/src/uk/ac/ox/cs/pagoda/reasoner/light/RDFoxAnswerTuples.java
new file mode 100644
index 0000000..dd71809
--- /dev/null
+++ b/src/uk/ac/ox/cs/pagoda/reasoner/light/RDFoxAnswerTuples.java
@@ -0,0 +1,100 @@
+package uk.ac.ox.cs.pagoda.reasoner.light;
+
+import org.semanticweb.HermiT.model.Constant;
+import org.semanticweb.HermiT.model.Individual;
+import org.semanticweb.HermiT.model.Term;
+
+import uk.ac.ox.cs.pagoda.query.AnswerTuple;
+import uk.ac.ox.cs.pagoda.query.AnswerTuples;
+import uk.ac.ox.cs.pagoda.util.Utility;
+import uk.ac.ox.cs.JRDFox.JRDFStoreException;
+import uk.ac.ox.cs.JRDFox.model.GroundTerm;
+import uk.ac.ox.cs.JRDFox.store.TupleIterator;
+
+public class RDFoxAnswerTuples implements AnswerTuples {
+
+	long multi; 
+	TupleIterator m_iter; 
+	String[] m_answerVars; 
+	
+	public RDFoxAnswerTuples(String[] answerVars, TupleIterator iter) {
+		m_answerVars = answerVars;
+		m_iter = iter; 
+		reset(); 
+	}
+	
+	@Override
+	public boolean isValid() {
+		return multi != 0;
+	}
+
+	@Override
+	public int getArity() {
+		try {
+			return m_iter.getArity();
+		} catch (JRDFStoreException e) {
+			e.printStackTrace();
+			return -1; 
+		}
+	}
+
+	@Override
+	public void moveNext() {
+		try {
+			multi = m_iter.getNext();
+		} catch (JRDFStoreException e) {
+			e.printStackTrace();
+		}  
+	}
+
+	@Override
+	public void dispose() {
+		m_iter.dispose();
+	}
+	
+	protected void finalize() {
+		m_iter.dispose();
+	}
+	
+	@Override
+	public AnswerTuple getTuple() {
+		return new AnswerTuple(m_iter, m_answerVars.length); 
+	}
+
+	@Override
+	public void reset() {
+		try {
+			multi = m_iter.open();
+		} catch (JRDFStoreException e) {
+			e.printStackTrace();
+		} 		
+	}
+
+	@Override
+	public boolean contains(AnswerTuple t) {
+		Utility.logError("Unsupported operation in RDFoxAnswerTuples"); 
+		return false;
+	}
+
+	@Override
+	public void remove() {
+		Utility.logError("Unsupported operation in RDFoxAnswerTuples"); 
+	}
+
+	@Override
+	public String[] getAnswerVariables() {
+		return m_answerVars;
+	}
+	
+	public static Term getHermitTerm(GroundTerm t) {
+		if (t instanceof uk.ac.ox.cs.JRDFox.model.Individual) {
+			uk.ac.ox.cs.JRDFox.model.Individual individual = (uk.ac.ox.cs.JRDFox.model.Individual) t; 
+			return Individual.create(individual.getIRI());
+		}
+		else {
+			uk.ac.ox.cs.JRDFox.model.Literal literal = ((uk.ac.ox.cs.JRDFox.model.Literal) t); 
+			return Constant.create(literal.getLexicalForm(), literal.getDatatype().getIRI());
+		}
+	}
+	
+}
-- 
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