C++ (Cpp) CRewindabilitySpec::Release示例

示例#1

文件： CPhysicalSpool.cpp 项目： b-xiang/gporca

//---------------------------------------------------------------------------
//	@function:
//		CPhysicalSpool::PrsDerive
//
//	@doc:
//		Derive rewindability
//
//--------------------------------------------------------------------------
CRewindabilitySpec *
CPhysicalSpool::PrsDerive
	(
	IMemoryPool *mp,
	CExpressionHandle &exprhdl
	)
	const
{
	CRewindabilitySpec *prsChild = PrsDerivePassThruOuter(exprhdl);
	CRewindabilitySpec::EMotionHazardType motion_hazard = (!FEager() && prsChild->HasMotionHazard()) ?
														  CRewindabilitySpec::EmhtMotion :
														  CRewindabilitySpec::EmhtNoMotion;
	prsChild->Release();

	return GPOS_NEW(mp) CRewindabilitySpec(CRewindabilitySpec::ErtRewindable, motion_hazard);
}