/**
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.query.algebra.Compare.CompareOp;
import com.bigdata.bop.BOp;
import com.bigdata.bop.IBindingSet;
import com.bigdata.bop.IValueExpression;
import com.bigdata.bop.NV;
import com.bigdata.rdf.error.SparqlTypeErrorException;
import com.bigdata.rdf.internal.IV;
import com.bigdata.rdf.sparql.ast.GlobalAnnotations;
/**
* "IN" and "NOT IN" operator based on testing of the enumerated value
* expressions.
*
* @author <a href="mailto:thompsonbry@users.sourceforge.net">Bryan Thompson</a>
* @version $Id$
*/
public class ComputedIN extends XSDBooleanIVValueExpression {
private static final long serialVersionUID = 9066209752427789308L;
public interface Annotations extends XSDBooleanIVValueExpression.Annotations {
/**
* <code>true</code> iff this is "NOT IN" rather than "IN".
*/
String NOT = ComputedIN.class.getName() + ".not";
}
private transient boolean not = false;
@SuppressWarnings("rawtypes")
public ComputedIN(final boolean not, final IValueExpression<? extends IV>... ise) {
this(ise, NV.asMap(Annotations.NOT, Boolean.valueOf(not)));
}
public ComputedIN(final BOp[] args, final Map<String, Object> annotations) {
super(args, annotations);
if (getProperty(Annotations.NOT) == null)
throw new IllegalArgumentException();
this.not = ((Boolean) getProperty(Annotations.NOT)).booleanValue();
final IValueExpression<? extends IV> var = get(0);
if (var == null)
throw new IllegalArgumentException();
if (arity() < 2) {
throw new IllegalArgumentException();
}
}
public ComputedIN(final ComputedIN op) {
super(op);
}
@SuppressWarnings({ "rawtypes" })
public boolean accept(final IBindingSet bindingSet) {
final IV iv = get(0).get(bindingSet);
if (iv == null)
throw new SparqlTypeErrorException.UnboundVarException();
boolean found = false;
for (int i = 1; i < arity(); i++) {
final IV right = get(i).get(bindingSet);
if (right != null) {
if (CompareBOp.compare(iv, right, CompareOp.EQ)) {
found = true;
break;
}
}
}
return not ? !found : found;
}
}