/**
* File: $HeadURL: https://hdt-java.googlecode.com/svn/trunk/hdt-java/iface/org/rdfhdt/hdt/rdf/RDFAccess.java $
* Revision: $Rev: 191 $
* Last modified: $Date: 2013-03-03 11:41:43 +0000 (dom, 03 mar 2013) $
* Last modified by: $Author: mario.arias $
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*
* Contacting the authors:
* Mario Arias: mario.arias@deri.org
* Javier D. Fernandez: jfergar@infor.uva.es
* Miguel A. Martinez-Prieto: migumar2@infor.uva.es
* Alejandro Andres: fuzzy.alej@gmail.com
*/
package org.rdfhdt.hdt.rdf;
import org.rdfhdt.hdt.exceptions.NotFoundException;
import org.rdfhdt.hdt.triples.IteratorTripleString;
/**
* @author mario.arias
*
*/
public interface RDFAccess {
/**
* Iterate over the triples of an RDF Set that match the specified pattern.
* null and empty strings act as a wildcard.
* (e.g. search(null, null, null) iterates over all elements)
*
* @param subject
* The subject to search
* @param predicate
* The predicate to search
* @param object
* The object to search
*
* @return Iterator of TripleStrings
* @throws NotFoundException
*/
IteratorTripleString search(CharSequence subject, CharSequence predicate, CharSequence object) throws NotFoundException;
}