/**
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
*/
/*
* Created on Aug 31, 2011
*/
package com.bigdata.rdf.sparql.ast;
import com.bigdata.bop.IVariable;
/**
* Some utility methods for AST/IV conversions.
*
* @author <a href="mailto:thompsonbry@users.sourceforge.net">Bryan Thompson</a>
* @version $Id$
*/
public class ASTUtil {
/**
* Convert an {@link IVariable}[] into a {@link VarNode}[].
*/
static public VarNode[] convert(final IVariable[] a) {
if (a == null)
return null;
final VarNode[] b = new VarNode[a.length];
for (int i = 0; i < a.length; i++) {
b[i] = new VarNode(a[i].getName());
}
return b;
}
/**
* Convert an {@link VarNode}[] into an {@link IVariable}[].
*/
static public IVariable[] convert(final VarNode[] a) {
if (a == null)
return null;
final IVariable[] b = new IVariable[a.length];
for (int i = 0; i < a.length; i++) {
b[i] = a[i].getValueExpression();
}
return b;
}
}