greenplumn CDXLPhysicalTVF 代码
文件路径：/src/backend/gporca/libnaucrates/src/operators/CDXLPhysicalTVF.cpp
/---------------------------------------------------------------------------
/ Greenplum Database
/ Copyright (C) 2012 EMC Corp.
/
/ @filename:
/ CDXLPhysicalTVF.cpp
/
/ @doc:
/ Implementation of DXL physical table-valued function
/---------------------------------------------------------------------------
#include "naucrates/dxl/operators/CDXLPhysicalTVF.h"
#include "gpos/string/CWStringDynamic.h"
#include "naucrates/dxl/operators/CDXLNode.h"
#include "naucrates/dxl/xml/CXMLSerializer.h"
using namespace gpos;
using namespace gpdxl;
/---------------------------------------------------------------------------
/ @function:
/ CDXLPhysicalTVF::CDXLPhysicalTVF
/
/ @doc:
/ Ctor
/
/---------------------------------------------------------------------------
CDXLPhysicalTVF::CDXLPhysicalTVF(CMemoryPool *mp, IMDId *mdid_func,
IMDId *mdid_return_type, CWStringConst *str)
: CDXLPhysical(mp),
m_func_mdid(mdid_func),
m_return_type_mdid(mdid_return_type),
func_name(str)
{
GPOS_ASSERT(nullptr != m_func_mdid);
GPOS_ASSERT(nullptr != m_return_type_mdid);
GPOS_ASSERT(m_return_type_mdid->IsValid());
GPOS_ASSERT(nullptr != func_name);
}
/---------------------------------------------------------------------------
/ @function:
/ CDXLPhysicalTVF::~CDXLPhysicalTVF
/
/ @doc:
/ Dtor
/
/---------------------------------------------------------------------------
CDXLPhysicalTVF::~CDXLPhysicalTVF()
{
m_func_mdid->Release();
m_return_type_mdid->Release();
GPOS_DELETE(func_name);
}
/---------------------------------------------------------------------------
/ @function:
/ CDXLPhysicalTVF::GetDXLOperator
/
/ @doc:
/ Operator type
/
/---------------------------------------------------------------------------
Edxlopid
CDXLPhysicalTVF::GetDXLOperator() const
{
return EdxlopPhysicalTVF;
}
/---------------------------------------------------------------------------
/ @function:
/ CDXLPhysicalTVF::GetOpNameStr
/
/ @doc:
/ Operator name
/
/---------------------------------------------------------------------------
const CWStringConst *
CDXLPhysicalTVF::GetOpNameStr() const
{
return CDXLTokens::GetDXLTokenStr(EdxltokenPhysicalTVF);
}
/---------------------------------------------------------------------------
/ @function:
/ CDXLPhysicalTVF::SerializeToDXL
/
/ @doc:
/ Serialize function descriptor in DXL format
/
/---------------------------------------------------------------------------
void
CDXLPhysicalTVF::SerializeToDXL(CXMLSerializer *xml_serializer,
const CDXLNode *dxlnode) const
{
const CWStringConst *element_name = GetOpNameStr();
xml_serializer->OpenElement(
CDXLTokens::GetDXLTokenStr(EdxltokenNamespacePrefix), element_name);
m_func_mdid->Serialize(xml_serializer,
CDXLTokens::GetDXLTokenStr(EdxltokenFuncId));
xml_serializer->AddAttribute(CDXLTokens::GetDXLTokenStr(EdxltokenName),
func_name);
m_return_type_mdid->Serialize(xml_serializer,
CDXLTokens::GetDXLTokenStr(EdxltokenTypeId));
/ serialize properties
dxlnode->SerializePropertiesToDXL(xml_serializer);
/ serialize children
dxlnode->SerializeChildrenToDXL(xml_serializer);
xml_serializer->CloseElement(
CDXLTokens::GetDXLTokenStr(EdxltokenNamespacePrefix), element_name);
}
#ifdef GPOS_DEBUG
/---------------------------------------------------------------------------
/ @function:
/ CDXLPhysicalTVF::AssertValid
/
/ @doc:
/ Checks whether operator node is well-structured
/
/---------------------------------------------------------------------------
void
CDXLPhysicalTVF::AssertValid(const CDXLNode *dxlnode,
BOOL validate_children) const
{
/ assert validity of function id and return type
GPOS_ASSERT(nullptr != m_func_mdid);
GPOS_ASSERT(nullptr != m_return_type_mdid);
const ULONG arity = dxlnode->Arity();
for (ULONG idx = 0; idx < arity; ++idx)
{
CDXLNode *dxlnode_arg = (*dxlnode)[idx];
GPOS_ASSERT(EdxloptypeScalar ==
dxlnode_arg->GetOperator()->GetDXLOperatorType());
if (validate_children)
{
dxlnode_arg->GetOperator()->AssertValid(dxlnode_arg,
validate_children);
}
}
}
#endif / GPOS_DEBUG
/ EOF
相关信息
相关文章
greenplumn CDXLCtasStorageOptions 源码