greenplumn CDXLLogicalCTEConsumer 源码

greenplumn CDXLLogicalCTEConsumer 代码

文件路径：/src/backend/gporca/libnaucrates/src/operators/CDXLLogicalCTEConsumer.cpp

//---------------------------------------------------------------------------
//	Greenplum Database
//	Copyright (C) 2012 EMC Corp.
//
//	@filename:
//		CDXLLogicalCTEConsumer.cpp
//
//	@doc:
//		Implementation of DXL logical CTE Consumer operator
//
//---------------------------------------------------------------------------

#include "naucrates/dxl/operators/CDXLLogicalCTEConsumer.h"

#include "gpos/string/CWStringDynamic.h"

#include "naucrates/dxl/CDXLUtils.h"
#include "naucrates/dxl/operators/CDXLNode.h"
#include "naucrates/dxl/xml/CXMLSerializer.h"
#include "naucrates/dxl/xml/dxltokens.h"

using namespace gpos;
using namespace gpdxl;

//---------------------------------------------------------------------------
//	@function:
//		CDXLLogicalCTEConsumer::CDXLLogicalCTEConsumer
//
//	@doc:
//		Ctor
//
//---------------------------------------------------------------------------
CDXLLogicalCTEConsumer::CDXLLogicalCTEConsumer(
	CMemoryPool *mp, ULONG id, ULongPtrArray *output_colids_array)
	: CDXLLogical(mp), m_id(id), m_output_colids_array(output_colids_array)
{
	GPOS_ASSERT(nullptr != output_colids_array);
}

//---------------------------------------------------------------------------
//	@function:
//		CDXLLogicalCTEConsumer::~CDXLLogicalCTEConsumer
//
//	@doc:
//		Dtor
//
//---------------------------------------------------------------------------
CDXLLogicalCTEConsumer::~CDXLLogicalCTEConsumer()
{
	m_output_colids_array->Release();
}

//---------------------------------------------------------------------------
//	@function:
//		CDXLLogicalCTEConsumer::GetDXLOperator
//
//	@doc:
//		Operator type
//
//---------------------------------------------------------------------------
Edxlopid
CDXLLogicalCTEConsumer::GetDXLOperator() const
{
	return EdxlopLogicalCTEConsumer;
}

//---------------------------------------------------------------------------
//	@function:
//		CDXLLogicalCTEConsumer::GetOpNameStr
//
//	@doc:
//		Operator name
//
//---------------------------------------------------------------------------
const CWStringConst *
CDXLLogicalCTEConsumer::GetOpNameStr() const
{
	return CDXLTokens::GetDXLTokenStr(EdxltokenLogicalCTEConsumer);
}

//---------------------------------------------------------------------------
//	@function:
//		CDXLLogicalCTEConsumer::IsColDefined
//
//	@doc:
//		Check if given column is defined by operator
//
//---------------------------------------------------------------------------
BOOL
CDXLLogicalCTEConsumer::IsColDefined(ULONG colid) const
{
	const ULONG size = m_output_colids_array->Size();
	for (ULONG idx = 0; idx < size; idx++)
	{
		ULONG id = *((*m_output_colids_array)[idx]);
		if (id == colid)
		{
			return true;
		}
	}

	return false;
}

//---------------------------------------------------------------------------
//	@function:
//		CDXLLogicalCTEConsumer::SerializeToDXL
//
//	@doc:
//		Serialize operator in DXL format
//
//---------------------------------------------------------------------------
void
CDXLLogicalCTEConsumer::SerializeToDXL(CXMLSerializer *xml_serializer,
									   const CDXLNode *	 //dxlnode
) const
{
	const CWStringConst *element_name = GetOpNameStr();

	xml_serializer->OpenElement(
		CDXLTokens::GetDXLTokenStr(EdxltokenNamespacePrefix), element_name);
	xml_serializer->AddAttribute(CDXLTokens::GetDXLTokenStr(EdxltokenCTEId),
								 Id());

	CWStringDynamic *str_colids =
		CDXLUtils::Serialize(m_mp, m_output_colids_array);
	xml_serializer->AddAttribute(CDXLTokens::GetDXLTokenStr(EdxltokenColumns),
								 str_colids);
	GPOS_DELETE(str_colids);

	xml_serializer->CloseElement(
		CDXLTokens::GetDXLTokenStr(EdxltokenNamespacePrefix), element_name);
}

#ifdef GPOS_DEBUG
//---------------------------------------------------------------------------
//	@function:
//		CDXLLogicalCTEConsumer::AssertValid
//
//	@doc:
//		Checks whether operator node is well-structured
//
//---------------------------------------------------------------------------
void
CDXLLogicalCTEConsumer::AssertValid(const CDXLNode *dxlnode,
									BOOL  // validate_children
) const
{
	GPOS_ASSERT(0 == dxlnode->Arity());
}
#endif	// GPOS_DEBUG

// EOF

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