Gaudi::Interfaces::IParticlePropertySvc Class Reference

The abstract interface to Particle Property Service. More...

#include </builds/gaudi/Gaudi/GaudiPartProp/include/Gaudi/Interfaces/IParticlePropertySvc.h>

Inheritance diagram for Gaudi::Interfaces::IParticlePropertySvc:

Collaboration diagram for Gaudi::Interfaces::IParticlePropertySvc:

Public Types
typedef std::vector< const Gaudi::ParticleProperty * >	ParticleProperties
	the actual type of (ordered) container of particle properties
typedef ParticleProperties::const_iterator	iterator
	the actual type of iterator over the (ordered) container of properties
Public Types inherited from extend_interfaces< IInterface >
using	ext_iids
	take union of the ext_iids of all Interfaces...

Public Member Functions
	DeclareInterfaceID (Gaudi::Interfaces::IParticlePropertySvc, 2, 0)
virtual iterator	begin () const =0
	get the begin-iterator for the container of particle properties It is assumed that the container is properly ordered
virtual iterator	end () const =0
	get the end-iterator for the container of particle properties It is assumed that the container is properly ordered
virtual size_t	size () const =0
	get the container size.
virtual const ParticleProperty *	find (const std::string &name) const =0
	Retrieve an object by name:
virtual const ParticleProperty *	find (const Gaudi::ParticleID &pid) const =0
	Retrieve an object by Gaudi::ParticleID:
template<class PREDICATE, class OUTPUT>
OUTPUT	get (const PREDICATE &cut, OUTPUT output) const
	get the properties according to some criteria
virtual std::string	cc (const std::string &decay) const =0
	make the charge conjugation for the string/decay descriptor

Detailed Description

The abstract interface to Particle Property Service.

Author

Iain Last

G.Corti

Vanya BELYAEV Ivan..nosp@m.Bely.nosp@m.aev@n.nosp@m.ikhe.nosp@m.f.nl

Definition at line 29 of file IParticlePropertySvc.h.

Member Typedef Documentation

iterator

typedef ParticleProperties::const_iterator Gaudi::Interfaces::IParticlePropertySvc::iterator

the actual type of iterator over the (ordered) container of properties

Definition at line 36 of file IParticlePropertySvc.h.

ParticleProperties

typedef std::vector<const Gaudi::ParticleProperty*> Gaudi::Interfaces::IParticlePropertySvc::ParticleProperties

the actual type of (ordered) container of particle properties

Definition at line 34 of file IParticlePropertySvc.h.

Member Function Documentation

begin()

virtual iterator Gaudi::Interfaces::IParticlePropertySvc::begin ( ) const

pure virtual

get the begin-iterator for the container of particle properties It is assumed that the container is properly ordered

Returns

begin-iterator for the container of particle properties

cc()

virtual std::string Gaudi::Interfaces::IParticlePropertySvc::cc ( const std::string & decay ) const

pure virtual

make the charge conjugation for the string/decay descriptor

std::string decay = "B0 -> pi+ pi-" ;
 
Gaudi::IParticlePropertySvc* svc = ... ;
 
std::string cc = svc -> cc ( decay ) ;

Parameters

decay

the decay descriptor

Returns

the charge conjugation for the decay descriptor

DeclareInterfaceID()

Gaudi::Interfaces::IParticlePropertySvc::DeclareInterfaceID	(	Gaudi::Interfaces::IParticlePropertySvc	,
		2	,
		0	)

end()

virtual iterator Gaudi::Interfaces::IParticlePropertySvc::end ( ) const

pure virtual

get the end-iterator for the container of particle properties It is assumed that the container is properly ordered

Returns

end-iterator for the container of particle properties

find() [1/2]

virtual const ParticleProperty * Gaudi::Interfaces::IParticlePropertySvc::find ( const Gaudi::ParticleID & pid ) const

pure virtual

Retrieve an object by Gaudi::ParticleID:

Gaudi::Interfaces::IParticlePropertySvc* svc = ... ;
 
const Gaudi::ParticleID& pid = ... ;
 
const Gaudi::ParticleProperty*  pp = svc -> find ( pid ) ;

Parameters

pid	the particle's Gaudi::ParticleID

Returns

pointer to particle property object

find() [2/2]

virtual const ParticleProperty * Gaudi::Interfaces::IParticlePropertySvc::find ( const std::string & name ) const

pure virtual

Retrieve an object by name:

Gaudi::Interfaces::IParticlePropertySvc* svc = ... ;
 
const std::string& name = ... ;
 
const Gaudi::ParticleProperty*  pp = svc -> find ( name ) ;

Parameters

name	the particle name

Returns

pointer to particle property object

get()

template<class PREDICATE, class OUTPUT>

OUTPUT Gaudi::Interfaces::IParticlePropertySvc::get	(	const PREDICATE &	cut,
		OUTPUT	output ) const

get the properties according to some criteria

e.g. get all leptons:

#include "boost/lambda/lambda.hpp"
#include "boost/lambda/bind.hpp"
...
using namespace boost::lambda ;
...
 
const Gaudi::Interfaces::IParticlePropertySvc* svc = ... ;
 
typedef Gaudi::Interfaces::IParticlePropertySvc::ParticleProperties Vector ;
 
// create the output vector:
Vector leptons ;
// use the service
svc -> get
  ( bind ( &Gaudi::ParticleID::isLepton ,
           bind ( &Gaudi::ParticleProperty::particleID , _1 ) ) ,
    std::back_inserter ( lepton ) ) ; // output

Essentially it is just std::copy_if STL-algorithm

Parameters

cut	the predicate
output	the output iterator

Returns

the updated position of output iterator

Definition at line 492 of file IParticlePropertySvc.h.

                                                                                {
      iterator first = this->begin();
      iterator last  = this->end();
      return Gaudi::ParticleProperties::get( first, last, cut, output );
    }

size()

virtual size_t Gaudi::Interfaces::IParticlePropertySvc::size ( ) const

pure virtual

get the container size.

---

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

• GaudiPartProp/include/Gaudi/Interfaces/IParticlePropertySvc.h