greenplumn CDXLIndexDescr 源码

2022-08-18
浏览 (304)

greenplumn CDXLIndexDescr 代码

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

//---------------------------------------------------------------------------
//	Greenplum Database
//	Copyright (C) 2012 EMC Corp.
//
//	@filename:
//		CDXLIndexDescr.cpp
//
//	@doc:
//		Implementation of DXL index descriptors
//---------------------------------------------------------------------------

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

#include "gpos/string/CWStringDynamic.h"

#include "naucrates/dxl/xml/CXMLSerializer.h"

using namespace gpos;
using namespace gpdxl;

//---------------------------------------------------------------------------
//	@function:
//		CDXLIndexDescr::CDXLIndexDescr
//
//	@doc:
//		Constructor
//
//---------------------------------------------------------------------------
CDXLIndexDescr::CDXLIndexDescr(IMDId *mdid, CMDName *mdname)
	: m_mdid(mdid), m_mdname(mdname)
{
	GPOS_ASSERT(m_mdid->IsValid());
	GPOS_ASSERT(nullptr != m_mdname);
	GPOS_ASSERT(m_mdname->GetMDName()->IsValid());
}


//---------------------------------------------------------------------------
//	@function:
//		CDXLIndexDescr::~CDXLIndexDescr
//
//	@doc:
//		Destructor
//
//---------------------------------------------------------------------------
CDXLIndexDescr::~CDXLIndexDescr()
{
	m_mdid->Release();
	GPOS_DELETE(m_mdname);
}


//---------------------------------------------------------------------------
//	@function:
//		CDXLIndexDescr::MDId
//
//	@doc:
//		Return the metadata id for the index
//
//---------------------------------------------------------------------------
IMDId *
CDXLIndexDescr::MDId() const
{
	return m_mdid;
}

//---------------------------------------------------------------------------
//	@function:
//		CDXLIndexDescr::MdName
//
//	@doc:
//		Return index name
//
//---------------------------------------------------------------------------
const CMDName *
CDXLIndexDescr::MdName() const
{
	return m_mdname;
}

//---------------------------------------------------------------------------
//	@function:
//		CDXLIndexDescr::SerializeToDXL
//
//	@doc:
//		Serialize index descriptor in DXL format
//
//---------------------------------------------------------------------------
void
CDXLIndexDescr::SerializeToDXL(CXMLSerializer *xml_serializer) const
{
	xml_serializer->OpenElement(
		CDXLTokens::GetDXLTokenStr(EdxltokenNamespacePrefix),
		CDXLTokens::GetDXLTokenStr(EdxltokenIndexDescr));
	m_mdid->Serialize(xml_serializer,
					  CDXLTokens::GetDXLTokenStr(EdxltokenMdid));
	xml_serializer->AddAttribute(CDXLTokens::GetDXLTokenStr(EdxltokenIndexName),
								 m_mdname->GetMDName());
	xml_serializer->CloseElement(
		CDXLTokens::GetDXLTokenStr(EdxltokenNamespacePrefix),
		CDXLTokens::GetDXLTokenStr(EdxltokenIndexDescr));
}

// 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

0 赞

所属分类： 大数据
本文标签： greenplum
版权声明： 原创文章如转载，请注明本文链接: https://m.seaxiang.com/blog/9e6def24ee074ab599bf390473e429c2

热门推荐

1、直接访问google.com
2、 - 优质文章
3、 gate.io
4、 harmony 鸿蒙hdc使用指导
5、 harmony 鸿蒙ArkUI组件（ArkTS）开发常见问题
6、 harmony 鸿蒙初识ArkTS语言
7、 golang
8、 flink kafka connector scan.startup.mode 的几个选项
9、 openharmony
10、 Vue中input框自动聚焦

Loading...