//---------------------------------------------------------------------------
//	Greenplum Database
//	Copyright (C) 2017 VMware, Inc. or its affiliates.
//
//	@filename:
//		CScalarCoerceBase.h
//
//	@doc:
//		Scalar coerce operator base class
//
//	@owner:
//
//	@test:
//
//
//---------------------------------------------------------------------------
#ifndef GPOPT_CScalarCoerceBase_H
#define GPOPT_CScalarCoerceBase_H

#include "gpos/base.h"

#include "gpopt/operators/CScalar.h"

namespace gpopt
{
using namespace gpos;

//---------------------------------------------------------------------------
//	@class:
//		CScalarCoerceBase
//
//	@doc:
//		Scalar coerce operator base class
//
//---------------------------------------------------------------------------
class CScalarCoerceBase : public CScalar
{
private:
	// catalog MDId of the result type
	IMDId *m_result_type_mdid;

	// output type modifier
	INT m_type_modifier;

	// coercion form
	ECoercionForm m_ecf;

	// location of token to be coerced
	INT m_location;

public:
	CScalarCoerceBase(const CScalarCoerceBase &) = delete;

	// ctor
	CScalarCoerceBase(CMemoryPool *mp, IMDId *mdid_type, INT type_modifier,
					  ECoercionForm dxl_coerce_format, INT location);

	// dtor
	~CScalarCoerceBase() override;

	// the type of the scalar expression
	IMDId *MdidType() const override;

	// return type modifier
	INT TypeModifier() const override;

	// return coercion form
	ECoercionForm Ecf() const;

	// return token location
	INT Location() const;

	// return a copy of the operator with remapped columns
	COperator *PopCopyWithRemappedColumns(CMemoryPool *mp,
										  UlongToColRefMap *colref_mapping,
										  BOOL must_exist) override;

};	// class CScalarCoerceBase

}  // namespace gpopt


#endif	// !GPOPT_CScalarCoerceBase_H

// EOF