greenplumn CDXLDatumInt8 代码
文件路径：/src/backend/gporca/libnaucrates/src/operators/CDXLDatumInt8.cpp
/---------------------------------------------------------------------------
/ Greenplum Database
/ Copyright (C) 2012 EMC Corp.
/
/ @filename:
/ CDXLDatumInt8.cpp
/
/ @doc:
/ Implementation of DXL datum of type long int
/
/ @owner:
/
/
/ @test:
/
/---------------------------------------------------------------------------
#include "naucrates/dxl/operators/CDXLDatumInt8.h"
#include "gpos/string/CWStringDynamic.h"
#include "naucrates/dxl/xml/CXMLSerializer.h"
using namespace gpos;
using namespace gpdxl;
/---------------------------------------------------------------------------
/ @function:
/ CDXLDatumInt8::CDXLDatumInt8
/
/ @doc:
/ Ctor
/
/---------------------------------------------------------------------------
CDXLDatumInt8::CDXLDatumInt8(CMemoryPool *mp, IMDId *mdid_type, BOOL is_null,
LINT val)
: CDXLDatum(mp, mdid_type, default_type_modifier, is_null, 8 /*length*/),
m_val(val)
{
if (is_null)
{
m_val = 0;
}
}
/---------------------------------------------------------------------------
/ @function:
/ CDXLDatumInt8::Value
/
/ @doc:
/ Return the long int value
/
/---------------------------------------------------------------------------
LINT
CDXLDatumInt8::Value() const
{
return m_val;
}
/---------------------------------------------------------------------------
/ @function:
/ CDXLDatumInt8::Serialize
/
/ @doc:
/ Serialize datum in DXL format
/
/---------------------------------------------------------------------------
void
CDXLDatumInt8::Serialize(CXMLSerializer *xml_serializer)
{
m_mdid_type->Serialize(xml_serializer,
CDXLTokens::GetDXLTokenStr(EdxltokenTypeId));
if (!m_is_null)
{
xml_serializer->AddAttribute(CDXLTokens::GetDXLTokenStr(EdxltokenValue),
m_val);
}
else
{
xml_serializer->AddAttribute(
CDXLTokens::GetDXLTokenStr(EdxltokenIsNull), true);
}
}
/ EOF
相关信息
相关文章
greenplumn CDXLCtasStorageOptions 源码