/**
Copyright (C) SYSTAP, LLC DBA Blazegraph 2006-2016. All rights reserved.
Contact:
SYSTAP, LLC DBA Blazegraph
2501 Calvert ST NW #106
Washington, DC 20008
licenses@blazegraph.com
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; version 2 of the License.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
package com.bigdata.rdf.internal.constraints;
import java.util.Map;
import org.openrdf.model.Literal;
import org.openrdf.model.URI;
import org.openrdf.query.algebra.evaluation.ValueExprEvaluationException;
import com.bigdata.bop.BOp;
import com.bigdata.bop.IBindingSet;
import com.bigdata.bop.IValueExpression;
import com.bigdata.bop.ImmutableBOp;
import com.bigdata.bop.NV;
import com.bigdata.rdf.error.SparqlTypeErrorException;
import com.bigdata.rdf.internal.IV;
import com.bigdata.rdf.internal.XSD;
import com.bigdata.rdf.model.BigdataURI;
import com.bigdata.rdf.sparql.ast.GlobalAnnotations;
/**
* The IRI function, as defined in <a
* href="http://www.w3.org/TR/sparql11-query/#SparqlOps">SPARQL 1.1 Query
* Language for RDF</a>.
*
* @author <a href="mailto:mrpersonick@users.sourceforge.net">Mike Personick</a>
* @version $Id$
*/
public class IriBOp extends IVValueExpression<IV> implements INeedsMaterialization {
private static final long serialVersionUID = -8448763718374010166L;
public interface Annotations extends ImmutableBOp.Annotations {
String BASE_URI = (IriBOp.class.getName() + ".baseURI").intern();
}
public IriBOp(final IValueExpression<? extends IV> x,
final String baseURI,
final GlobalAnnotations globals) {
super(x, globals, new NV(Annotations.BASE_URI, baseURI));
}
public IriBOp(BOp[] args, Map<String, Object> anns) {
super(args, anns);
if (args.length != 1 || args[0] == null)
throw new IllegalArgumentException();
}
public IriBOp(IriBOp op) {
super(op);
}
@Override
public Requirement getRequirement() {
return Requirement.SOMETIMES;
}
@Override
public IV get(final IBindingSet bs) throws SparqlTypeErrorException {
final IV iv = getAndCheckBound(0, bs);
if (iv.isURI()) {
return iv;
}
if (!iv.isLiteral())
throw new SparqlTypeErrorException();
final String baseURI = getProperty(Annotations.BASE_URI, "");
final Literal lit = asLiteral(iv);
final URI dt = lit.getDatatype();
if (dt != null && !dt.stringValue().equals(XSD.STRING.stringValue()))
throw new SparqlTypeErrorException();
// final BigdataURI uri = getValueFactory().createURI(baseURI+lit.getLabel());
BigdataURI uri = null;
try {
uri = getValueFactory().createURI(lit.getLabel());
}
catch (IllegalArgumentException e) {
try {
uri = getValueFactory().createURI(baseURI, lit.getLabel());
}
catch (IllegalArgumentException e1) {
throw new SparqlTypeErrorException();
}
}
return super.asIV(uri, bs);
}
}