Framework for calculation on demand and result caching. More...
#include <ql/patterns/lazyobject.hpp>
Inherits Observable, and Observer.
Inherited by AbcdAtmVolCurve, Basket, CalibrationHelper, CapFloorTermVolCurve, CapFloorTermVolSurface, CmsMarket, EurodollarFuturesImpliedStdDevQuote, Fdm1DimSolver, Fdm2dBlackScholesSolver, Fdm2DimSolver, Fdm3DimSolver, FdmBatesSolver, FdmBlackScholesSolver, FdmExtOUJumpSolver, FdmG2Solver, FdmHestonHullWhiteSolver, FdmHestonSolver, FdmHullWhiteSolver, FdmKlugeExtOUSolver< N >, FdmNdimSolver< N >, FdmSimple2dBSSolver, FdmSimple2dExtOUSolver, FdmSimple3dExtOUJumpSolver, FittedBondDiscountCurve, FlatForward, ForwardSwapQuote, ImpliedStdDevQuote, Instrument, InterpolatedSmileSection< Interpolator >, MarkovFunctional, OneFactorCopula, PiecewiseDefaultCurve< Traits, Interpolator, Bootstrap >, PiecewiseYieldCurve< Traits, Interpolator, Bootstrap >, PiecewiseYoYInflationCurve< Interpolator, Bootstrap, Traits >, PiecewiseYoYOptionletVolatilityCurve< Interpolator, Bootstrap, Traits >, PiecewiseZeroInflationCurve< Interpolator, Bootstrap, Traits >, RendistatoCalculator [private]
, SabrInterpolatedSmileSection, StrippedOptionletAdapter, StrippedOptionletBase, and SwaptionVolatilityDiscrete.
Public Member Functions | |
Observer interface | |
void | update () |
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Observable (const Observable &) | |
Observable & | operator= (const Observable &) |
void | notifyObservers () |
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Observer (const Observer &) | |
Observer & | operator= (const Observer &) |
std::pair< std::set < boost::shared_ptr < Observable > >::iterator, bool > | registerWith (const boost::shared_ptr< Observable > &) |
Size | unregisterWith (const boost::shared_ptr< Observable > &) |
void | unregisterWithAll () |
Protected Attributes | |
bool | calculated_ |
bool | frozen_ |
Calculations | |
These methods do not modify the structure of the object and are therefore declared as | |
void | recalculate () |
void | freeze () |
void | unfreeze () |
virtual void | calculate () const |
virtual void | performCalculations () const =0 |
Framework for calculation on demand and result caching.
void recalculate | ( | ) |
This method force the recalculation of any results which would otherwise be cached. It is not declared as const
since it needs to call the non-const
notifyObservers method.
void freeze | ( | ) |
This method constrains the object to return the presently cached results on successive invocations, even if arguments upon which they depend should change.
void unfreeze | ( | ) |
This method reverts the effect of the freeze method, thus re-enabling recalculations.
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protectedvirtual |
This method performs all needed calculations by calling the performCalculations method.
Reimplemented in Instrument.
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protectedpure virtual |
This method must implement any calculations which must be (re)done in order to calculate the desired results.
Implemented in MarkovFunctional, FixedRateBondForward, Forward, Instrument, SwaptionVolatilityMatrix, CapFloorTermVolCurve, CapFloorTermVolSurface, RiskyBond, AbcdAtmVolCurve, ConvertibleBond, CompositeInstrument, EnergyVanillaSwap, EnergyBasisSwap, OptionletStripper1, OptionletStripper2, StrippedOptionletAdapter, ForwardSwapQuote, CalibrationHelper, EurodollarFuturesImpliedStdDevQuote, ImpliedStdDevQuote, EnergyFuture, and Stock.