#ifndef _QTOID_HH__
#define _QTOID_HH___

#include "qlparser/qtunaryoperation.hh"


// forward declarations
class QtVariable;


/*
* This file is part of rasdaman community.
*
* Rasdaman community 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 3 of the License, or
* (at your option) any later version.
*
* Rasdaman community 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 rasdaman community.  If not, see <http://www.gnu.org/licenses/>.
*
* Copyright 2003, 2004, 2005, 2006, 2007, 2008, 2009 Peter Baumann /
rasdaman GmbH.
*
* For more information please see <http://www.rasdaman.org>
* or contact Peter Baumann via <baumann@rasdaman.com>.
*/
/*************************************************************
 *
 *
 * COMMENTS:
 *
 ************************************************************/


//@ManMemo: Module: {\bf qlparser}

/*@Doc:

  The class represents an oid node.

*/

class QtOId : public QtUnaryOperation
{
  public:
    /// constructor getting operand
    QtOId( QtVariable* newInput );

    /// evaluates the node
    QtData* evaluate( QtDataList* inputList );

    /// prints the tree 
    virtual void printTree( int tab, std::ostream& s = std::cout, QtChildType mode = QT_ALL_NODES );

    /// prints the algebraic expression
    virtual void printAlgebraicExpression( std::ostream& s = std::cout );

    /// method for identification of nodes
    inline virtual const QtNodeType getNodeType() const;

    /// type checking of the subtree
    virtual const QtTypeElement& checkType( QtTypeTuple* typeTuple = NULL );

  private:
    /// attribute for identification of nodes
    static const QtNodeType nodeType;
};

#include "qlparser/qtoid.icc"

#endif