TruthVarFilter< ATruthVarSet > Class Template Reference

MC Filter Type using a VarSet and the truth variable in it. More...

#include <TruthVarFilter.dcl.h>

Inheritance diagram for TruthVarFilter< ATruthVarSet >:

Public Types
using	Object = typename Super::Object
	Type of the handled object.

Public Member Functions
	TruthVarFilter ()
	Constructor.
	~TruthVarFilter ()
	Default destructor.
Weight	operator() (const Object &object) override
	Reject an item if the truth variable is 0, else accept it.
void	exposeParameters (ModuleParamList *parameterList, const std::string &prefix) override
	Add the parameters of this filter to the given parameter list.
void	initialize () override
	Initialisation method sets up a reference to the value in the variable set to be returned.
Weight	operator() (const Object &object) override
	Returns the variable with the set requested name from the variable set.
bool	needsTruthInformation () override
	Checks if any variables need Monte Carlo information.
std::unique_ptr< AVarSet >	releaseVarSet () &&
	Steal the set of variables form this filter - filter becomes dysfunctional afterwards.

Protected Member Functions
AVarSet &	getVarSet () const
	Getter for the set of variables.
void	setVarSet (std::unique_ptr< AVarSet > varSet)
	Setter for the set of variables.

Private Types
using	Super = ChoosableFromVarSetFilter< ATruthVarSet >
	Type of the base class.
using	AVarSet = BaseVarSet< Object >
	Type of the variable set.

Private Attributes
std::string	m_param_varName
	Memory for the name of the variable selected as the return value of the filter.
Float_t *	m_variable
	Reference to the location of the value in the variable set to be returned.
std::unique_ptr< AVarSet >	m_varSet
	Instance of the variable set to be used in the filter.

Detailed Description

template<class ATruthVarSet>
class Belle2::TrackFindingCDC::TruthVarFilter< ATruthVarSet >

MC Filter Type using a VarSet and the truth variable in it.

Definition at line 20 of file TruthVarFilter.dcl.h.

Member Typedef Documentation

AVarSet

using AVarSet = BaseVarSet<Object>

privateinherited

Type of the variable set.

Definition at line 44 of file ChoosableFromVarSetFilter.dcl.h.

Object

using Object = typename Super::Object

Type of the handled object.

Definition at line 28 of file TruthVarFilter.dcl.h.

Super

using Super = ChoosableFromVarSetFilter<ATruthVarSet>

private

Type of the base class.

Definition at line 24 of file TruthVarFilter.dcl.h.

Constructor & Destructor Documentation

TruthVarFilter()

TruthVarFilter

Constructor.

Definition at line 26 of file TruthVarFilter.icc.h.

      : Super("truth")
    {
    }

Member Function Documentation

exposeParameters()

void exposeParameters ( ModuleParamList *  parameterList, const std::string &  prefix  )

overrideinherited

Add the parameters of this filter to the given parameter list.

Definition at line 57 of file ChoosableFromVarSetFilter.icc.h.

    {
      Super::exposeParameters(moduleParamList, prefix);
 
      if (m_param_varName == "") {
        // Make a forced parameter if no default variable name is present
        moduleParamList->addParameter(prefixed(prefix, "chosenVariable"),
                                      m_param_varName,
                                      "Choose the name of the variable "
                                      "that will be put out as a weight.");
      } else {
        // Normal unforced parameter if default name is present
        moduleParamList->addParameter(prefixed(prefix, "chosenVariable"),
                                      m_param_varName,
                                      "Choose the name of the variable "
                                      "that will be put out as a weight.",
                                      m_param_varName);
      }
    }

getVarSet()

auto getVarSet

protectedinherited

Getter for the set of variables.

Definition at line 80 of file FilterOnVarSet.icc.h.

    {
      return *m_varSet;
    }

initialize()

void initialize

overrideinherited

Initialisation method sets up a reference to the value in the variable set to be returned.

Definition at line 60 of file ChoosableFromVarSetFilter.icc.h.

    {
      Super::initialize();
      MayBePtr<Float_t> foundVariable = Super::getVarSet().find(m_param_varName);
      if (not foundVariable) {
        B2ERROR("Could not find request variable name " << m_param_varName << " in variable set");
        B2INFO("Valid names are: ");
        std::vector<Named<Float_t*>> namedVariables = Super::getVarSet().getNamedVariables();
        for (const Named<Float_t*>& namedVariable : namedVariables) {
          std::string name = namedVariable.getName();
          B2INFO("* " << name);
        }
      }
      m_variable = foundVariable;
    }

needsTruthInformation()

bool needsTruthInformation

overrideinherited

Checks if any variables need Monte Carlo information.

Definition at line 49 of file FilterOnVarSet.icc.h.

    {
      bool result = Super::needsTruthInformation();
      if (result) return true;
 
      const std::vector<Named<Float_t*>>& namedVariables = m_varSet->getNamedVariables();
      for (const Named<Float_t*>& namedVariable : namedVariables) {
        std::string name = namedVariable.getName();
        // If the name contains the word truth it is considered to have Monte carlo information.
        if (name.find("truth") != std::string::npos) {
          return true;
        }
      }
      return false;
    }

operator()() [1/2]

Weight operator() ( const Object &  object )

overrideinherited

Returns the variable with the set requested name from the variable set.

Definition at line 63 of file ChoosableFromVarSetFilter.icc.h.

    {
      Weight extracted = Super::operator()(object);
      if (std::isnan(extracted)) {
        return NAN;
      } else {
        if (m_variable) {
          return *m_variable;
        } else {
          return NAN;
        }
      }
    }

operator()() [2/2]

auto operator() ( const Object &  object )

override

Reject an item if the truth variable is 0, else accept it.

Definition at line 35 of file TruthVarFilter.icc.h.

                                                                                {
      Weight value = Super::operator()(object);
      if (std::isnan(value) or value == 0) return NAN;
      return 1.0;
    }

releaseVarSet()

auto releaseVarSet ( ) &&

inherited

Steal the set of variables form this filter - filter becomes dysfunctional afterwards.

Definition at line 75 of file FilterOnVarSet.icc.h.

                                                                      {
      return std::move(m_varSet);
    }

setVarSet()

void setVarSet ( std::unique_ptr< AVarSet >  varSet )

protectedinherited

Setter for the set of variables.

Definition at line 86 of file FilterOnVarSet.icc.h.

    {
      m_varSet = std::move(varSet);
    }

Member Data Documentation

m_param_varName

std::string m_param_varName

privateinherited

Memory for the name of the variable selected as the return value of the filter.

Definition at line 67 of file ChoosableFromVarSetFilter.dcl.h.

m_variable

Float_t* m_variable

privateinherited

Reference to the location of the value in the variable set to be returned.

Definition at line 70 of file ChoosableFromVarSetFilter.dcl.h.

m_varSet

std::unique_ptr<AVarSet> m_varSet

privateinherited

Instance of the variable set to be used in the filter.

Definition at line 71 of file FilterOnVarSet.dcl.h.

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

• tracking/trackFindingCDC/filters/base/include/TruthVarFilter.dcl.h
• tracking/trackFindingCDC/filters/base/include/TruthVarFilter.icc.h