/**
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.rules;
import org.openrdf.model.vocabulary.RDF;
import com.bigdata.rdf.spo.SPOPredicate;
import com.bigdata.rdf.vocab.Vocabulary;
/**
* rdf1:
*
* <pre>
* (?a rdf:type rdf:Property) :- ( ?u ?a ?y ).
* </pre>
*
* Note: This rule is evaluated using a {@link DistinctTermScan}. The variables
* that DO NOT appear in the head of the rule remain unbound in the generated
* solutions (?u and ?y). When justifications are generated, those unbound
* variables will be represented as ZERO (0L)s and interpreted as wildcards.
*/
public class RuleRdf01 extends AbstractRuleDistinctTermScan {
/**
*
*/
private static final long serialVersionUID = -7423082674586471243L;
public RuleRdf01(String relationName,Vocabulary vocab) {
super( "rdf01",//
new SPOPredicate(relationName,var("a"), vocab.getConstant(RDF.TYPE), vocab.getConstant(RDF.PROPERTY)), //
new SPOPredicate[] { //
new SPOPredicate(relationName,var("u"), var("a"), var("y"))//
},//
null// constraints
);
}
}