greenplumn CScalarCoerceBase 源码

greenplumn CScalarCoerceBase 代码

文件路径：/src/backend/gporca/libgpopt/src/operators/CScalarCoerceBase.cpp

//---------------------------------------------------------------------------
//	Greenplum Database
//	Copyright (C) 2017 VMware, Inc. or its affiliates.
//
//	@filename:
//		CScalarCoerceBase.cpp
//
//	@doc:
//		Implementation of scalar coerce operator base class
//
//	@owner:
//
//	@test:
//
//
//---------------------------------------------------------------------------

#include "gpopt/operators/CScalarCoerceBase.h"

#include "gpos/base.h"

using namespace gpopt;
using namespace gpmd;


//---------------------------------------------------------------------------
//	@function:
//		CScalarCoerceBase::CScalarCoerceBase
//
//	@doc:
//		Ctor
//
//---------------------------------------------------------------------------
CScalarCoerceBase::CScalarCoerceBase(CMemoryPool *mp, IMDId *mdid_type,
									 INT type_modifier, ECoercionForm ecf,
									 INT location)
	: CScalar(mp),
	  m_result_type_mdid(mdid_type),
	  m_type_modifier(type_modifier),
	  m_ecf(ecf),
	  m_location(location)
{
	GPOS_ASSERT(nullptr != mdid_type);
	GPOS_ASSERT(mdid_type->IsValid());
}


//---------------------------------------------------------------------------
//	@function:
//		CScalarCoerceBase::~CScalarCoerceBase
//
//	@doc:
//		Dtor
//
//---------------------------------------------------------------------------
CScalarCoerceBase::~CScalarCoerceBase()
{
	m_result_type_mdid->Release();
}


//---------------------------------------------------------------------------
//	@function:
//		CScalarCoerceBase::MdidType
//
//	@doc:
//		Return type of the scalar expression
//
//---------------------------------------------------------------------------
IMDId *
CScalarCoerceBase::MdidType() const
{
	return m_result_type_mdid;
}


//---------------------------------------------------------------------------
//	@function:
//		CScalarCoerceBase::TypeModifier
//
//	@doc:
//		Return type modifier
//
//---------------------------------------------------------------------------
INT
CScalarCoerceBase::TypeModifier() const
{
	return m_type_modifier;
}


//---------------------------------------------------------------------------
//	@function:
//		CScalarCoerceBase::Ecf
//
//	@doc:
//		Return coercion form
//
//---------------------------------------------------------------------------
CScalar::ECoercionForm
CScalarCoerceBase::Ecf() const
{
	return m_ecf;
}


//---------------------------------------------------------------------------
//	@function:
//		CScalarCoerceBase::Location
//
//	@doc:
//		Return token location
//
//---------------------------------------------------------------------------
INT
CScalarCoerceBase::Location() const
{
	return m_location;
}


//---------------------------------------------------------------------------
//	@function:
//		CScalarCoerceBase::PopCopyWithRemappedColumns
//
//	@doc:
//		return a copy of the operator with remapped columns
//
//---------------------------------------------------------------------------
COperator *
CScalarCoerceBase::PopCopyWithRemappedColumns(
	CMemoryPool *,		 //mp,
	UlongToColRefMap *,	 //colref_mapping,
	BOOL				 //must_exist
)
{
	return PopCopyDefault();
}

// EOF

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