ExpressionParsing::DecorHelper< T_Cont, T_src > Class Template Reference

Auxiliary class to handle decorator handle based xAOD object content access. More...

#include <xAODAccessor.h>

Collaboration diagram for ExpressionParsing::DecorHelper< T_Cont, T_src >:

Classes
class	Kit
	Auxiliary class to create the corresponding auxiliary helper object. More...

Public Member Functions
	DecorHelper (const EventContext &ctx, const SG::ReadDecorHandleKey< T_Cont > &key, SG::ReadHandle< T_Cont > &handle)
std::size_t	size (const T_Cont &cont) const
T_src	get (const T_Cont &cont) const
	Get the scalar provided by the container.
T_src	get (const T_Cont &cont, std::size_t idx) const
	Get the specified element of the vector provided by the container.

Private Attributes
SG::ReadDecorHandle< T_Cont, T_src >	m_decorHandle
const void *	m_data

Detailed Description

template<class T_Cont, typename T_src>
class ExpressionParsing::DecorHelper< T_Cont, T_src >

Auxiliary class to handle decorator handle based xAOD object content access.

Definition at line 70 of file xAODAccessor.h.

Constructor & Destructor Documentation

DecorHelper()

template<class T_Cont, typename T_src>

ExpressionParsing::DecorHelper< T_Cont, T_src >::DecorHelper ( const EventContext & ctx, const SG::ReadDecorHandleKey< T_Cont > & key, SG::ReadHandle< T_Cont > & handle )

inline

Definition at line 72 of file xAODAccessor.h.

         : m_decorHandle(key, ctx),
           m_data(getVectorData(*handle)->getDataArray(m_decorHandle.auxid()))
      {
         if (!m_decorHandle.isValid()) {
            BaseAccessor::throwInvalidHandle(key.key());
         }
      }

Member Function Documentation

get() [1/2]

template<class T_Cont, typename T_src>

T_src ExpressionParsing::DecorHelper< T_Cont, T_src >::get ( const T_Cont & cont ) const

inline

Get the scalar provided by the container.

Definition at line 86 of file xAODAccessor.h.

                                          {
         return m_decorHandle( cont );
      }

get() [2/2]

template<class T_Cont, typename T_src>

T_src ExpressionParsing::DecorHelper< T_Cont, T_src >::get ( const T_Cont & cont, std::size_t idx ) const

inline

Get the specified element of the vector provided by the container.

Definition at line 91 of file xAODAccessor.h.

                                                         {
         (void) cont;
         return SG::AuxDataTraits<T_src>::index (m_data, idx);
      }

size()

template<class T_Cont, typename T_src>

std::size_t ExpressionParsing::DecorHelper< T_Cont, T_src >::size ( const T_Cont & cont ) const

inline

Definition at line 81 of file xAODAccessor.h.

                                               {
         return getContainerSize(cont);
      }

Member Data Documentation

m_data

template<class T_Cont, typename T_src>

const void* ExpressionParsing::DecorHelper< T_Cont, T_src >::m_data

private

Definition at line 120 of file xAODAccessor.h.

m_decorHandle

template<class T_Cont, typename T_src>

SG::ReadDecorHandle<T_Cont,T_src> ExpressionParsing::DecorHelper< T_Cont, T_src >::m_decorHandle

private

Definition at line 119 of file xAODAccessor.h.

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

• xAODAccessor.h