private SWRLIndividualObject makeIndividalObject(final Node node) throws URISyntaxException {
if (node.isVariable()) {
final SWRLIndividualVariable var =
swrlFactory.createIndividualVariable(new URI(varNS + node.getName()));
vars.put(node.toString(), var);
return var;
}
final OWLIndividual ind = owlModel.createIndividual(null, new URI(node.getURI()));
return swrlFactory.wrapIndividual(ind);
}
private SWRLDataObject makeDataObject(final Node node) throws URISyntaxException {
if (node.isVariable()) {
final SWRLDataVariable var =
swrlFactory.createDataVariable(new URI(varNS + node.getName()));
vars.put(node.toString(), var);
return var;
}
final OWLDataValue value =
new OWLDataValueImpl(new LiteralImpl(node, (EnhGraph) owlModel.getImplementation()));
return swrlFactory.wrapDataValue(value);
}
/* @see com.hp.hpl.jena.sparql.syntax.ElementVisitorBase#visit(com.hp.hpl.jena.sparql.syntax.ElementTriplesBlock) */
@Override
public void visit(final ElementTriplesBlock elementtriplesblock) {
for (final Triple t : elementtriplesblock.getPattern()) {
try {
if (t.getPredicate().isVariable())
throw new IllegalArgumentException(
"Variables cannot be used in predicate position in ABoxQuery");
Atom atom = null;
final String predURI = t.getPredicate().getURI();
if (RDF.type.getURI().equals(predURI)) {
if (t.getObject().isVariable())
throw new IllegalArgumentException(
"Variables cannot be used as objects of rdf:type triples in ABoxQuery");
final OWLClass c = owlModel.createClass(new URI(t.getObject().getURI()));
final SWRLIndividualObject arg = makeIndividalObject(t.getSubject());
atom = swrlFactory.createClassAtom(c, arg);
} else {
final OWLProperty p = owlModel.getProperty(new URI(predURI));
if (p == null)
throw new IllegalArgumentException(
predURI + " is unknown [Object|Datatype]Property in the backing OWL model.");
else if (p.isDatatypeProperty()) {
final OWLDataProperty dp = owlModel.createDataProperty(p.getURI());
final SWRLIndividualObject arg1 = makeIndividalObject(t.getSubject());
final SWRLDataObject arg2 = makeDataObject(t.getObject());
atom = swrlFactory.createDataPropertyAtom(dp, arg1, arg2);
} else if (p.isObjectProperty()) {
final OWLObjectProperty op = owlModel.createObjectProperty(p.getURI());
final SWRLIndividualObject arg1 = makeIndividalObject(t.getSubject());
final SWRLIndividualObject arg2 = makeIndividalObject(t.getObject());
atom = swrlFactory.createIndividualPropertyAtom(op, arg1, arg2);
}
// else it could be a annotation property, which are not relevant anyway
}
if (atom != null) atoms = atoms.cons(atom);
} catch (final URISyntaxException e) {
throw new IllegalArgumentException(
e.getInput() + " appearing in the query string is not a valid URI!");
}
}
}
ElementVisitor(
final OWLModel model, final ISWRLFactory swrlFactory, final Map<String, Variable> vars) {
this.owlModel = model;
this.swrlFactory = swrlFactory;
this.vars = vars;
this.atoms = swrlFactory.createList();
}
private SWRLDataObject makeDataObject(final Expr expr) throws URISyntaxException {
if (expr.isVariable()) {
return swrlFactory.createDataVariable(new URI(varNS + expr.getVarName()));
} else if (expr.isConstant()) {
final NodeValue nv = (NodeValue) expr;
OWLDataValue value;
if (nv.isInteger()) value = owlModel.createDataValue(nv.getInteger());
else if (nv.isDouble()) value = owlModel.createDataValue(Double.valueOf(nv.getDouble()));
else if (nv.isFloat()) value = owlModel.createDataValue(Float.valueOf(nv.getFloat()));
else if (nv.isBoolean()) value = owlModel.createDataValue(Boolean.valueOf(nv.getBoolean()));
else if (nv.isString()) value = owlModel.createDataValue(nv.getString());
else if (nv.isDecimal()) value = owlModel.createDataValue(nv.getDecimal());
else if (nv.hasDateTime()) value = owlModel.createDataValue(nv.getDateTime());
else /* if (nv.isLiteral()) */ throw new NotImplementedException();
return swrlFactory.wrapDataValue(value);
} else {
throw new IllegalArgumentException(
"Nested constraint (filter) near " + expr + " can not be transformed to SWRL atom.");
}
}
private SWRLDataObject makeDataObject(final Expression expr) throws URISyntaxException {
if (expr.isVariable()) {
return swrlFactory.createDataVariable(new URI(varNS + expr.getName()));
} else if (expr.isConstant()) {
OWLDataValue value = null;
if (expr instanceof ParsedLiteral) {
final ParsedLiteral lit = (ParsedLiteral) expr;
if (lit.isInt()) value = owlModel.createDataValue(Long.valueOf(lit.getInt()));
else if (lit.isDouble())
value = owlModel.createDataValue(Double.valueOf(lit.getDouble()));
else if (lit.isBoolean())
value = owlModel.createDataValue(Boolean.valueOf(lit.getBoolean()));
else if (lit.isString()) value = owlModel.createDataValue(lit.getString());
else if (lit.isURI()) value = owlModel.createDataValue(URI.create(lit.getURI()));
else /* if (lit.isNode()) */ throw new NotImplementedException();
} else value = owlModel.createDataValue(expr.getValue());
return swrlFactory.wrapDataValue(value);
} else {
throw new IllegalArgumentException(
"Nested constraint expressions near " + expr + " can not be transformed to SWRL atom.");
}
}
/* @see com.hp.hpl.jena.sparql.syntax.ElementVisitorBase#visit(com.hp.hpl.jena.sparql.syntax.ElementFilter) */
@Override
public void visit(final ElementFilter elementfilter) {
final Expr expr = elementfilter.getExpr();
final BuiltinAtom atom;
try {
if (expr instanceof Expression) // RDQL
{
final Expression e = (Expression) expr;
final SWRLDataObject arg1 = makeDataObject(e.getArg(0));
final SWRLDataObject arg2 = makeDataObject(e.getArg(1));
if (e instanceof Q_Equal) atom = swrlFactory.createEqual(arg1, arg2);
else if (e instanceof Q_NotEqual) atom = swrlFactory.createNotEqual(arg1, arg2);
else if (e instanceof Q_GreaterThan) atom = swrlFactory.createGreaterThan(arg1, arg2);
else if (e instanceof Q_GreaterThanOrEqual)
atom = swrlFactory.createGreaterThanOrEqual(arg1, arg2);
else if (e instanceof Q_LessThan) atom = swrlFactory.createLessThan(arg1, arg2);
else if (e instanceof Q_LessThanOrEqual)
atom = swrlFactory.createLessThanOrEqual(arg1, arg2);
else
throw new IllegalArgumentException(
"Unsupported constraint expression " + e + " used in RDQL query.");
} else if (expr.isFunction()) // SPARQL
{
final ExprFunction f = (ExprFunction) expr;
final SWRLDataObject arg1 = makeDataObject(f.getArg(0));
final SWRLDataObject arg2 = makeDataObject(f.getArg(1));
if (f instanceof E_Equals) atom = swrlFactory.createEqual(arg1, arg2);
else if (f instanceof E_NotEquals) atom = swrlFactory.createNotEqual(arg1, arg2);
else if (f instanceof E_GreaterThan) atom = swrlFactory.createGreaterThan(arg1, arg2);
else if (f instanceof E_GreaterThanOrEqual)
atom = swrlFactory.createGreaterThanOrEqual(arg1, arg2);
else if (f instanceof E_LessThan) atom = swrlFactory.createLessThan(arg1, arg2);
else if (f instanceof E_LessThanOrEqual)
atom = swrlFactory.createLessThanOrEqual(arg1, arg2);
else
throw new IllegalArgumentException(
"Unsupported constraint (filter) " + f + " used in SPARQL query.");
} else return;
atoms = atoms.cons(atom);
} catch (final URISyntaxException e) {
throw new IllegalArgumentException(e.getInput() + " is not a valid URI!");
}
}