/**
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 com.bigdata.bop.BOp;
import com.bigdata.bop.IBindingSet;
import com.bigdata.bop.IValueExpression;
import com.bigdata.rdf.error.SparqlTypeErrorException;
import com.bigdata.rdf.internal.IV;
import com.bigdata.rdf.sparql.ast.GlobalAnnotations;
public class StrstartsBOp extends XSDBooleanIVValueExpression implements INeedsMaterialization {
private static final long serialVersionUID = 7680098071087046784L;
@SuppressWarnings("rawtypes")
public StrstartsBOp(//
final IValueExpression<? extends IV> x,//
final IValueExpression<? extends IV> y//
) {
this(new BOp[] { x, y }, BOp.NOANNS);
}
public StrstartsBOp(final BOp[] args, final Map<String, Object> anns) {
super(args, anns);
if (args.length != 2 || args[0] == null || args[1] == null)
throw new IllegalArgumentException();
}
public StrstartsBOp(StrstartsBOp op) {
super(op);
}
@Override
public Requirement getRequirement() {
return Requirement.SOMETIMES;
}
@Override
public boolean accept(final IBindingSet bs) throws SparqlTypeErrorException {
final String v = getAndCheckLiteralValue(0, bs).getLabel();
final String c = getAndCheckLiteralValue(1, bs).getLabel();
return v.startsWith(c);
}
}