[pagoda] Move project to Scala

This commit includes a few changes:
- The repository still uses Maven to manage dependency but it is now a
  Scala project.
- The code has been ported from OWLAPI 3.4.10 to 5.1.20
- A proof of concept program using both RSAComb and PAGOdA has been
  added.

1 files changed, 0 insertions, 67 deletions

diff --git a/src/uk/ac/ox/cs/pagoda/constraints/UnaryBottom.java b/src/uk/ac/ox/cs/pagoda/constraints/UnaryBottom.java
deleted file mode 100644
index 5339c50..0000000
--- a/src/uk/ac/ox/cs/pagoda/constraints/UnaryBottom.java
+++ /dev/null
@@ -1,67 +0,0 @@
-package uk.ac.ox.cs.pagoda.constraints;
-
-import java.util.Collection;
-import java.util.HashSet;
-import java.util.LinkedList;
-import java.util.Set;
-
-import org.semanticweb.HermiT.model.Atom;
-import org.semanticweb.HermiT.model.AtomicConcept;
-import org.semanticweb.HermiT.model.DLClause;
-import org.semanticweb.HermiT.model.Individual;
-import org.semanticweb.HermiT.model.Term;
-import org.semanticweb.HermiT.model.Variable;
-
-public class UnaryBottom implements BottomStrategy {
-        
-        @Override
-        public Collection<DLClause> process(Collection<DLClause> clauses) {
-                Collection<DLClause> ret = new LinkedList<DLClause>(); 
-                for (DLClause clause: clauses) 
-                        if (clause.getHeadLength() == 0) {
-                                ret.add(DLClause.create(getEmptyHead(pickRepresentative(clause.getBodyAtoms())), clause.getBodyAtoms()));
-                        }
-                        else 
-                                ret.add(clause); 
-                return ret;
-        }
-
-        protected Term pickRepresentative(Atom[] atoms) {
-                Term rep = null; 
-                Set<Variable> vars = new HashSet<Variable>(); 
-                for (Atom atom: atoms) {
-                        atom.getVariables(vars);
-                        for (Variable v: vars)
-                                if (rep == null || ((Variable) rep).getName().compareTo(v.getName()) > 0)
-                                        rep = v;
-                        vars.clear(); 
-                }
-                if (rep != null) return rep; 
-                
-                Set<Individual> inds = new HashSet<Individual>(); 
-                for (Atom atom: atoms) {
-                        atom.getIndividuals(inds);
-                        for (Individual i: inds)
-                                if (rep == null || ((Individual) rep).getIRI().compareTo(i.getIRI()) > 0)
-                                        rep = i;
-                        inds.clear();
-                }
-                
-                return rep;
-        }
-
-        @Override
-        public boolean isBottomRule(DLClause clause) {
-                return clause.getHeadLength() == 1 && clause.getHeadAtom(0).getDLPredicate().equals(AtomicConcept.NOTHING);
-        }
-
-        public Atom[] getEmptyHead(Term t) {
-                return new Atom[] {Atom.create(AtomicConcept.NOTHING, t)};
-        }
-
-        @Override
-        public int getBottomNumber() {
-                return 1;
-        }
-
-}