initial version

1 files changed, 100 insertions, 0 deletions

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());
+                }
+        }
+        
+}