greenplumn CXformContext 源码
greenplumn CXformContext 代码
文件路径：/src/backend/gporca/libgpopt/include/gpopt/xforms/CXformContext.h
//---------------------------------------------------------------------------
// Greenplum Database
// Copyright (C) 2009 Greenplum, Inc.
//
// @filename:
// CXformContext.h
//
// @doc:
// Context container passed to every application of a transformation
//---------------------------------------------------------------------------
#ifndef GPOPT_CXformContext_H
#define GPOPT_CXformContext_H
#include "gpos/base.h"
#include "gpos/common/CRefCount.h"
#include "gpopt/operators/CPatternTree.h"
namespace gpopt
{
using namespace gpos;
//---------------------------------------------------------------------------
// @class:
// CXformContext
//
// @doc:
// context container
//
//---------------------------------------------------------------------------
class CXformContext : public CRefCount
{
private:
// Memory pool
CMemoryPool *m_mp;
public:
CXformContext(const CXformContext &) = delete;
// ctor
explicit CXformContext(CMemoryPool *mp) : m_mp(mp)
{
}
// dtor
~CXformContext() override = default;
// accessor
inline CMemoryPool *
Pmp() const
{
return m_mp;
}
}; // class CXformContext
} // namespace gpopt
#endif // !GPOPT_CXformContext_H
// EOF
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