/*
// $Id: //open/dev/farrago/src/org/eigenbase/rex/RexVariable.java#9 $
// Package org.eigenbase is a class library of data management components.
// Copyright (C) 2005-2009 The Eigenbase Project
// Copyright (C) 2002-2009 SQLstream, Inc.
// Copyright (C) 2005-2009 LucidEra, Inc.
// Portions Copyright (C) 2003-2009 John V. Sichi
//
// 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; either version 2 of the License, or (at your option)
// any later version approved by The Eigenbase Project.
//
// 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 org.eigenbase.rex;

import org.eigenbase.reltype.*;


/**
 * A row-expression which references a field.
 *
 * @author jhyde
 * @version $Id: //open/dev/farrago/src/org/eigenbase/rex/RexVariable.java#9 $
 * @since Nov 24, 2003
 */
public abstract class RexVariable
    extends RexNode
{
    //~ Instance fields --------------------------------------------------------

    protected final String name;
    protected final RelDataType type;

    //~ Constructors -----------------------------------------------------------

    protected RexVariable(
        String name,
        RelDataType type)
    {
        assert type != null;
        assert name != null;
        this.name = name;
        this.digest = name;
        this.type = type;
    }

    //~ Methods ----------------------------------------------------------------

    public RelDataType getType()
    {
        return type;
    }

    /**
     * Returns the name of this variable.
     */
    public String getName()
    {
        return name;
    }
}

// End RexVariable.java
