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#ifndef __QTUPDATE_HH__
#define __QTUPDATE_HH___
#include "qlparser/qtexecute.hh"
#include "qlparser/qtoncstream.hh"
#include "qlparser/qtoperation.hh"
#include <iostream>
/*
* 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:
*/
class QtUpdate : public QtExecute
{
public:
/// constructor getting target, domain, and source expressions of the update
QtUpdate( QtOperation* initUpdateTarget, QtOperation* initUpdateDomain, QtOperation* initUpdateSource );
/// virtual destructor
virtual ~QtUpdate();
/// method for evaluating the node
virtual int evaluate();
/// return childs of the node
virtual QtNodeList* getChilds( QtChildType flag );
/// 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 );
//@Man: Read/Write methods:
//@{
///
///
void setStreamInput( QtONCStream* newInput );
///
/// returns updateTarget
QtOperation* getUpdateTarget();
/// returns updateDomain
QtOperation* getUpdateDomain();
///returns updateSource
QtOperation* getUpdateSource();
///returns input
QtONCStream* getInput();
//@}
/// method for identification of nodes
inline virtual const QtNodeType getNodeType() const;
/// method for query rewrite
inline virtual void setInput( QtOperation* child, QtOperation* input);
/// pre optimization
//virtual void preOptimize();
/**
Pre-Optimization step is passed to the input streams.
*/
/// type checking
virtual void checkType();
private:
/// one input stream
QtONCStream* input;
/// target expression
QtOperation* updateTarget;
/// target domain expression
QtOperation* updateDomain;
/// target expression
QtOperation* updateSource;
/// attribute for identification of nodes
static const QtNodeType nodeType;
};
#include "qlparser/qtupdate.icc"
#endif
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