greenplumn CSerializableMDAccessor 源码
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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