greenplumn CSerializableMDAccessor 代码
文件路径：/src/backend/gporca/libgpopt/include/gpopt/minidump/CSerializableMDAccessor.h
/---------------------------------------------------------------------------
/ Greenplum Database
/ Copyright (C) 2011 EMC Corp.
/
/ @filename:
/ CSerializableMDAccessor.h
/
/ @doc:
/ Wrapper for serializing MD accessor objects
/---------------------------------------------------------------------------
#ifndef GPOS_CSerializableMDAccessor_H
#define GPOS_CSerializableMDAccessor_H
#include "gpos/base.h"
#include "gpos/error/CSerializable.h"
#include "gpopt/operators/CExpression.h"
using namespace gpos;
using namespace gpdxl;
namespace gpopt
{
/ fwd decl
class CMDAccessor;
/---------------------------------------------------------------------------
/ @class:
/ CSerializableMDAccessor
/
/ @doc:
/ Wrapper for serializing MD objects in a minidump
/
/---------------------------------------------------------------------------
class CSerializableMDAccessor : public CSerializable
{
private:
/ MD accessor
CMDAccessor *m_pmda;
/ serialize header
void SerializeHeader(COstream &oos);
/ serialize footer
static void SerializeFooter(COstream &oos);
public:
CSerializableMDAccessor(const CSerializableMDAccessor &) = delete;
/ ctor
explicit CSerializableMDAccessor(CMDAccessor *md_accessor);
/ dtor
~CSerializableMDAccessor() override = default;
/ serialize object to passed stream
void Serialize(COstream &oos) override;
}; / class CSerializableMDAccessor
} / namespace gpopt
#endif / !GPOS_CSerializableMDAccessor_H
/ EOF
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