greenplumn CDXLScalarPartBound 代码
文件路径：/src/backend/gporca/libnaucrates/src/operators/CDXLScalarPartBound.cpp
/---------------------------------------------------------------------------
/ Greenplum Database
/ Copyright (C) 2014 VMware, Inc. or its affiliates.
/
/ @filename:
/ CDXLScalarPartBound.cpp
/
/ @doc:
/ Implementation of DXL Part Bound expression
/---------------------------------------------------------------------------
#include "naucrates/dxl/operators/CDXLScalarPartBound.h"
#include "gpopt/mdcache/CMDAccessor.h"
#include "naucrates/dxl/operators/CDXLNode.h"
#include "naucrates/dxl/xml/CXMLSerializer.h"
using namespace gpopt;
using namespace gpmd;
using namespace gpos;
using namespace gpdxl;
/---------------------------------------------------------------------------
/ @function:
/ CDXLScalarPartBound::CDXLScalarPartBound
/
/ @doc:
/ Ctor
/
/---------------------------------------------------------------------------
CDXLScalarPartBound::CDXLScalarPartBound(CMemoryPool *mp,
ULONG partitioning_level,
IMDId *mdid_type, BOOL is_lower_bound)
: CDXLScalar(mp),
m_partitioning_level(partitioning_level),
m_mdid_type(mdid_type),
m_is_lower_bound(is_lower_bound)
{
GPOS_ASSERT(mdid_type->IsValid());
}
/---------------------------------------------------------------------------
/ @function:
/ CDXLScalarPartBound::~CDXLScalarPartBound
/
/ @doc:
/ Dtor
/
/---------------------------------------------------------------------------
CDXLScalarPartBound::~CDXLScalarPartBound()
{
m_mdid_type->Release();
}
/---------------------------------------------------------------------------
/ @function:
/ CDXLScalarPartBound::GetDXLOperator
/
/ @doc:
/ Operator type
/
/---------------------------------------------------------------------------
Edxlopid
CDXLScalarPartBound::GetDXLOperator() const
{
return EdxlopScalarPartBound;
}
/---------------------------------------------------------------------------
/ @function:
/ CDXLScalarPartBound::GetOpNameStr
/
/ @doc:
/ Operator name
/
/---------------------------------------------------------------------------
const CWStringConst *
CDXLScalarPartBound::GetOpNameStr() const
{
return CDXLTokens::GetDXLTokenStr(EdxltokenScalarPartBound);
}
/---------------------------------------------------------------------------
/ @function:
/ CDXLScalarPartBound::HasBoolResult
/
/ @doc:
/ Does the operator return a boolean result
/
/---------------------------------------------------------------------------
BOOL
CDXLScalarPartBound::HasBoolResult(CMDAccessor *md_accessor) const
{
return (IMDType::EtiBool ==
md_accessor->RetrieveType(m_mdid_type)->GetDatumType());
}
/---------------------------------------------------------------------------
/ @function:
/ CDXLScalarPartBound::SerializeToDXL
/
/ @doc:
/ Serialize operator in DXL format
/
/---------------------------------------------------------------------------
void
CDXLScalarPartBound::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(EdxltokenPartLevel),
m_partitioning_level);
m_mdid_type->Serialize(xml_serializer,
CDXLTokens::GetDXLTokenStr(EdxltokenMDType));
xml_serializer->AddAttribute(
CDXLTokens::GetDXLTokenStr(EdxltokenScalarPartBoundLower),
m_is_lower_bound);
xml_serializer->CloseElement(
CDXLTokens::GetDXLTokenStr(EdxltokenNamespacePrefix), element_name);
}
#ifdef GPOS_DEBUG
/---------------------------------------------------------------------------
/ @function:
/ CDXLScalarPartBound::AssertValid
/
/ @doc:
/ Checks whether operator node is well-structured
/
/---------------------------------------------------------------------------
void
CDXLScalarPartBound::AssertValid(const CDXLNode *dxlnode,
BOOL / validate_children
) const
{
GPOS_ASSERT(0 == dxlnode->Arity());
}
#endif / GPOS_DEBUG
/ EOF
相关信息
相关文章
greenplumn CDXLCtasStorageOptions 源码