Defines an XSecAlgorithmI that delegates the actual calculation to one or more sub-algorithms (each of which is itself an XSecAlgorithmI) based on the input interaction. The choice of sub-algorithms is configurable via XML. More...

#include <HybridXSecAlgorithm.h>

Inheritance diagram for genie::HybridXSecAlgorithm:

Public Member Functions
	HybridXSecAlgorithm ()

	HybridXSecAlgorithm (string config)

virtual	~HybridXSecAlgorithm ()

double	XSec (const Interaction *i, KinePhaseSpace_t k) const
	Compute the cross section for the input interaction. More...

double	Integral (const Interaction *i) const

bool	ValidProcess (const Interaction *i) const
	Can this cross section algorithm handle the input process? More...

void	Configure (const Registry &config)

void	Configure (string config)

Public Member Functions inherited from genie::XSecAlgorithmI
virtual	~XSecAlgorithmI ()

virtual bool	ValidKinematics (const Interaction *i) const
	Is the input kinematical point a physically allowed one? More...

Public Member Functions inherited from genie::Algorithm
virtual	~Algorithm ()

virtual void	FindConfig (void)

virtual const Registry &	GetConfig (void) const

Registry *	GetOwnedConfig (void)

virtual const AlgId &	Id (void) const
	Get algorithm ID. More...

virtual AlgStatus_t	GetStatus (void) const
	Get algorithm status. More...

virtual bool	AllowReconfig (void) const

virtual AlgCmp_t	Compare (const Algorithm *alg) const
	Compare with input algorithm. More...

virtual void	SetId (const AlgId &id)
	Set algorithm ID. More...

virtual void	SetId (string name, string config)

const Algorithm *	SubAlg (const RgKey &registry_key) const

void	AdoptConfig (void)

void	AdoptSubstructure (void)

virtual void	Print (ostream &stream) const
	Print algorithm info. More...

Private Member Functions
void	LoadConfig (void)
	Load algorithm configuration. More...

const XSecAlgorithmI *	ChooseXSecAlg (const Interaction &interaction) const

Private Attributes
std::map< string, const XSecAlgorithmI * >	fXSecAlgMap

const XSecAlgorithmI *	fDefaultXSecAlg
	Optional XSecAlgorithmI to use by default. More...

Additional Inherited Members
Static Public Member Functions inherited from genie::Algorithm
static string	BuildParamVectKey (const std::string &comm_name, unsigned int i)

static string	BuildParamVectSizeKey (const std::string &comm_name)

Protected Member Functions inherited from genie::XSecAlgorithmI
	XSecAlgorithmI ()

	XSecAlgorithmI (string name)

	XSecAlgorithmI (string name, string config)

Protected Member Functions inherited from genie::Algorithm
	Algorithm ()

	Algorithm (string name)

	Algorithm (string name, string config)

void	Initialize (void)

void	DeleteConfig (void)

void	DeleteSubstructure (void)

Registry *	ExtractLocalConfig (const Registry &in) const

Registry *	ExtractLowerConfig (const Registry &in, const string &alg_key) const
	Split an incoming configuration Registry into a block valid for the sub-algo identified by alg_key. More...

template<class T >
bool	GetParam (const RgKey &name, T &p, bool is_top_call=true) const

template<class T >
bool	GetParamDef (const RgKey &name, T &p, const T &def) const

template<class T >
int	GetParamVect (const std::string &comm_name, std::vector< T > &v, bool is_top_call=true) const
	Handle to load vectors of parameters. More...

int	GetParamVectKeys (const std::string &comm_name, std::vector< RgKey > &k, bool is_top_call=true) const

int	AddTopRegistry (Registry *rp, bool owns=true)
	add registry with top priority, also update ownership More...

int	AddLowRegistry (Registry *rp, bool owns=true)
	add registry with lowest priority, also update ownership More...

int	MergeTopRegistry (const Registry &r)

int	AddTopRegisties (const vector< Registry * > &rs, bool owns=false)
	Add registries with top priority, also udated Ownerships. More...

Protected Attributes inherited from genie::Algorithm
bool	fAllowReconfig

bool	fOwnsSubstruc
	true if it owns its substructure (sub-algs,...) More...

AlgId	fID
	algorithm name and configuration set More...

vector< Registry * >	fConfVect

vector< bool >	fOwnerships
	ownership for every registry in fConfVect More...

AlgStatus_t	fStatus
	algorithm execution status More...

AlgMap *	fOwnedSubAlgMp
	local pool for owned sub-algs (taken out of the factory pool) More...

Detailed Description

Defines an XSecAlgorithmI that delegates the actual calculation to one or more sub-algorithms (each of which is itself an XSecAlgorithmI) based on the input interaction. The choice of sub-algorithms is configurable via XML.

The current use case is to allow GENIE to simultaneously use the SuSAv2 quasielastic cross section model for complex targets and the Llewellyn-Smith model for free nucleons.

Is a concrete implementation of the XSecAlgorithmI interface.

Author: Steven Gardiner <gardiner fnal.gov> Fermi National Acclerator Laboratory

November 4, 2019

Definition at line 35 of file HybridXSecAlgorithm.h.

Constructor & Destructor Documentation

HybridXSecAlgorithm::HybridXSecAlgorithm ( )

Definition at line 17 of file HybridXSecAlgorithm.cxx.

                                          : XSecAlgorithmI("genie::HybridXSecAlgorithm")
 {
 }

HybridXSecAlgorithm::HybridXSecAlgorithm ( string config )

Definition at line 21 of file HybridXSecAlgorithm.cxx.

   : XSecAlgorithmI("genie::HybridXSecAlgorithm", config)
 {
 }

HybridXSecAlgorithm::~HybridXSecAlgorithm ( )

virtual

Definition at line 26 of file HybridXSecAlgorithm.cxx.

27 {

28 }

Member Function Documentation

const XSecAlgorithmI * HybridXSecAlgorithm::ChooseXSecAlg ( const Interaction & interaction ) const

private

Retrieve a pointer to the appropriate cross section algorithm using the map. If no suitable algorithm was found, return a null pointer.

Definition at line 30 of file HybridXSecAlgorithm.cxx.

 {
   std::string inter_str = interaction.AsString();
   RgKey key = "XSecAlg@Interaction=" + inter_str;
 
   std::map<std::string, const XSecAlgorithmI*>::const_iterator
     cend = fXSecAlgMap.cend();
 
   std::map<std::string, const XSecAlgorithmI*>::const_iterator
     citer = fXSecAlgMap.find( key );
 
   // If the algorithm doesn't appear in the map, try to load it.
   if ( citer == cend ) {
 
     // If a key exists for the algorithm in the registry, load it
     // and store it for rapid retrieval later
     const Registry& temp_reg = this->GetConfig();
     if ( temp_reg.Exists(key) ) {
       const XSecAlgorithmI* temp_alg = dynamic_cast< const XSecAlgorithmI* >(
         this->SubAlg(key) );
       assert( temp_alg );
 
       fXSecAlgMap[ inter_str ] = temp_alg;
       return temp_alg;
     }
 
     // Otherwise, if the user has specified a default algorithm, then store a
     // new entry for that one in the map
     else if ( fDefaultXSecAlg ) {
       fXSecAlgMap[ inter_str ] = fDefaultXSecAlg;
       return fDefaultXSecAlg;
     }
 
     // Otherwise, store and return a null pointer. No suitable algorithm could
     // be found for the requested interaction.
     else {
       fXSecAlgMap[ inter_str ] = NULL;
       return NULL;
     }
 
   }
 
   // If an entry was found in the map, then just use that
   else return citer->second;
 }

void HybridXSecAlgorithm::Configure ( const Registry & config )

virtual

Configure the algorithm with an external registry The registry is merged with the top level registry if it is owned, Otherwise a copy of it is added with the highest priority

Reimplemented from genie::Algorithm.

Definition at line 103 of file HybridXSecAlgorithm.cxx.

 {
   Algorithm::Configure(config);
   this->LoadConfig();
 }

void HybridXSecAlgorithm::Configure ( std::string config )

virtual

Configure the algorithm from the AlgoConfigPool based on param_set string given in input An algorithm contains a vector of registries coming from different xml configuration files, which are loaded according a very precise prioriy This methods will load a number registries in order of priority: 1) "Tunable" parameter set from CommonParametes. This is loaded with the highest prioriry and it is designed to be used for tuning procedure Usage not expected from the user. 2) For every string defined in "CommonParame" the corresponding parameter set will be loaded from CommonParameter.xml 3) parameter set specified by the config string and defined in the xml file of the algorithm 4) if config is not "Default" also the Default parameter set from the same xml file will be loaded Effectively this avoids the repetion of a parameter when it is not changed in the requested configuration

Reimplemented from genie::Algorithm.

Definition at line 109 of file HybridXSecAlgorithm.cxx.

 {
   Algorithm::Configure(config);
   this->LoadConfig();
 }

double HybridXSecAlgorithm::Integral ( const Interaction * i ) const

virtual

Integrate the model over the kinematic phase space available to the input interaction (kinematical cuts can be included)

Implements genie::XSecAlgorithmI.

Definition at line 86 of file HybridXSecAlgorithm.cxx.

 {
   const XSecAlgorithmI* alg_to_use = this->ChooseXSecAlg( *interaction );
 
   if ( !alg_to_use ) return 0.;
   else return alg_to_use->Integral( interaction );
 }

void HybridXSecAlgorithm::LoadConfig ( void )

private

Load algorithm configuration.

Definition at line 115 of file HybridXSecAlgorithm.cxx.

 {
   fDefaultXSecAlg = NULL;
 
   // The user can optionally configure a cross section algorithm
   // to use by default (i.e., whenever one wasn't explicitly specified
   // for an input interaction). If one was given, then configure it.
   // Handling of the interaction-specific algorithms is done via
   // lazy initialization in ChooseXSecAlg().
   const Registry& temp_reg = this->GetConfig();
   if ( temp_reg.Exists("DefaultXSecAlg") ) {
     fDefaultXSecAlg = dynamic_cast< const XSecAlgorithmI* >(
       this->SubAlg("DefaultXSecAlg") );
     assert( fDefaultXSecAlg );
   }
 }

bool HybridXSecAlgorithm::ValidProcess ( const Interaction * i ) const

virtual

Can this cross section algorithm handle the input process?

Implements genie::XSecAlgorithmI.

Definition at line 94 of file HybridXSecAlgorithm.cxx.

 {
   if ( interaction->TestBit(kISkipProcessChk) ) return true;
 
   const XSecAlgorithmI* alg_to_use = this->ChooseXSecAlg( *interaction );
   if ( !alg_to_use ) return false;
   else return alg_to_use->ValidProcess( interaction );
 }

double HybridXSecAlgorithm::XSec	(	const Interaction *	i,
		KinePhaseSpace_t	k
	)		const

virtual

Compute the cross section for the input interaction.

Implements genie::XSecAlgorithmI.

Definition at line 77 of file HybridXSecAlgorithm.cxx.

 {
   const XSecAlgorithmI* alg_to_use = this->ChooseXSecAlg( *interaction );
 
   if ( !alg_to_use ) return 0.;
   else return alg_to_use->XSec( interaction, kps );
 }

Member Data Documentation

const XSecAlgorithmI* genie::HybridXSecAlgorithm::fDefaultXSecAlg

private

Optional XSecAlgorithmI to use by default.

Definition at line 70 of file HybridXSecAlgorithm.h.

std::map<string, const XSecAlgorithmI*> genie::HybridXSecAlgorithm::fXSecAlgMap

mutableprivate

Map specifying the managed cross section algorithms. Keys are strings generated with Interaction::AsString() (identical to those used for splines). Values are pointers to the corresponding cross section algorithms.

Definition at line 67 of file HybridXSecAlgorithm.h.

The documentation for this class was generated from the following files:

Generator/src/Framework/EventGen/HybridXSecAlgorithm.h
Generator/src/Framework/EventGen/HybridXSecAlgorithm.cxx

Public Member Functions

Private Member Functions

Private Attributes

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

Member Function Documentation

Member Data Documentation