greenplumn CDXLPhysicalRowTrigger 源码

greenplumn CDXLPhysicalRowTrigger 代码

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

//---------------------------------------------------------------------------
//	Greenplum Database
//	Copyright (C) 2012 EMC Corp.
//
//	@filename:
//		CDXLPhysicalRowTrigger.cpp
//
//	@doc:
//		Implementation of DXL physical row trigger operator
//---------------------------------------------------------------------------

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

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

using namespace gpos;
using namespace gpdxl;

//---------------------------------------------------------------------------
//	@function:
//		CDXLPhysicalRowTrigger::CDXLPhysicalRowTrigger
//
//	@doc:
//		Ctor
//
//---------------------------------------------------------------------------
CDXLPhysicalRowTrigger::CDXLPhysicalRowTrigger(CMemoryPool *mp, IMDId *rel_mdid,
											   INT type,
											   ULongPtrArray *colids_old,
											   ULongPtrArray *colids_new)
	: CDXLPhysical(mp),
	  m_rel_mdid(rel_mdid),
	  m_type(type),
	  m_colids_old(colids_old),
	  m_colids_new(colids_new)
{
	GPOS_ASSERT(rel_mdid->IsValid());
	GPOS_ASSERT(0 != type);
	GPOS_ASSERT(nullptr != colids_new || nullptr != colids_old);
	GPOS_ASSERT_IMP(nullptr != colids_new && nullptr != colids_old,
					colids_new->Size() == colids_old->Size());
}

//---------------------------------------------------------------------------
//	@function:
//		CDXLPhysicalRowTrigger::~CDXLPhysicalRowTrigger
//
//	@doc:
//		Dtor
//
//---------------------------------------------------------------------------
CDXLPhysicalRowTrigger::~CDXLPhysicalRowTrigger()
{
	m_rel_mdid->Release();
	CRefCount::SafeRelease(m_colids_old);
	CRefCount::SafeRelease(m_colids_new);
}

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

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

//---------------------------------------------------------------------------
//	@function:
//		CDXLPhysicalRowTrigger::SerializeToDXL
//
//	@doc:
//		Serialize function descriptor in DXL format
//
//---------------------------------------------------------------------------
void
CDXLPhysicalRowTrigger::SerializeToDXL(CXMLSerializer *xml_serializer,
									   const CDXLNode *dxlnode) const
{
	const CWStringConst *element_name = GetOpNameStr();
	xml_serializer->OpenElement(
		CDXLTokens::GetDXLTokenStr(EdxltokenNamespacePrefix), element_name);
	m_rel_mdid->Serialize(xml_serializer,
						  CDXLTokens::GetDXLTokenStr(EdxltokenRelationMdid));
	xml_serializer->AddAttribute(CDXLTokens::GetDXLTokenStr(EdxltokenMDType),
								 m_type);

	if (nullptr != m_colids_old)
	{
		CWStringDynamic *pstrColsOld = CDXLUtils::Serialize(m_mp, m_colids_old);
		xml_serializer->AddAttribute(
			CDXLTokens::GetDXLTokenStr(EdxltokenOldCols), pstrColsOld);
		GPOS_DELETE(pstrColsOld);
	}

	if (nullptr != m_colids_new)
	{
		CWStringDynamic *pstrColsNew = CDXLUtils::Serialize(m_mp, m_colids_new);
		xml_serializer->AddAttribute(
			CDXLTokens::GetDXLTokenStr(EdxltokenNewCols), pstrColsNew);
		GPOS_DELETE(pstrColsNew);
	}

	dxlnode->SerializePropertiesToDXL(xml_serializer);

	// serialize project list
	(*dxlnode)[0]->SerializeToDXL(xml_serializer);

	// serialize physical child
	(*dxlnode)[1]->SerializeToDXL(xml_serializer);

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

#ifdef GPOS_DEBUG
//---------------------------------------------------------------------------
//	@function:
//		CDXLPhysicalRowTrigger::AssertValid
//
//	@doc:
//		Checks whether operator node is well-structured
//
//---------------------------------------------------------------------------
void
CDXLPhysicalRowTrigger::AssertValid(const CDXLNode *dxlnode,
									BOOL validate_children) const
{
	GPOS_ASSERT(2 == dxlnode->Arity());
	CDXLNode *child_dxlnode = (*dxlnode)[1];
	GPOS_ASSERT(EdxloptypePhysical ==
				child_dxlnode->GetOperator()->GetDXLOperatorType());

	if (validate_children)
	{
		child_dxlnode->GetOperator()->AssertValid(child_dxlnode,
												  validate_children);
	}
}

#endif	// GPOS_DEBUG


// EOF

相关信息

greenplumn 源码目录

相关文章

greenplumn CDXLColDescr 源码

greenplumn CDXLColRef 源码

greenplumn CDXLCtasStorageOptions 源码

greenplumn CDXLDatum 源码

greenplumn CDXLDatumBool 源码

greenplumn CDXLDatumGeneric 源码

greenplumn CDXLDatumInt2 源码

greenplumn CDXLDatumInt4 源码

greenplumn CDXLDatumInt8 源码

greenplumn CDXLDatumOid 源码