Helper class that fetches some type of Ref given ProductID and index, using the edm::Event. More...

#include <AssociativeIterator.h>

Public Types
typedef RefType::value_type	element_type
Public Member Functions
	EdmEventItemGetter (const edm::Event &iEvent)
RefType	get (const ProductID &id, size_t idx) const
	~EdmEventItemGetter ()
Private Attributes
ProductID	id_
const edm::Event &	iEvent_
Handle< View< element_type > >	view_

Detailed Description

template<typename RefType>
class edm::EdmEventItemGetter< RefType >

Helper class that fetches some type of Ref given ProductID and index, using the edm::Event.

Definition at line 78 of file AssociativeIterator.h.

Member Typedef Documentation

template<typename RefType >

typedef RefType::value_type edm::EdmEventItemGetter< RefType >::element_type

Definition at line 80 of file AssociativeIterator.h.

Constructor & Destructor Documentation

template<typename RefType >

edm::EdmEventItemGetter< RefType >::EdmEventItemGetter ( const edm::Event & iEvent ) [inline]

Definition at line 81 of file AssociativeIterator.h.

: iEvent_(iEvent) { }

template<typename RefType >

edm::EdmEventItemGetter< RefType >::~EdmEventItemGetter ( ) [inline]

Definition at line 82 of file AssociativeIterator.h.

{ }

Member Function Documentation

template<typename RefType >

RefType edm::EdmEventItemGetter< RefType >::get	(	const ProductID &	id,
		size_t	idx
	)		const `[inline]`

Definition at line 84 of file AssociativeIterator.h.

References conv, lhef::cc::convert(), edm::Event::get(), edm::EdmEventItemGetter< RefType >::id_, edm::EdmEventItemGetter< RefType >::iEvent_, and edm::EdmEventItemGetter< RefType >::view_.

                                                               {
                typedef typename edm::RefToBase<element_type> BaseRefType; // could also use Ptr, but then I can't do Ptr->RefToBase
                if (id_ != id) {
                    id_ = id;
                    iEvent_.get(id_, view_);
                }
                BaseRefType ref = view_->refAt(idx);
                typedef typename helper::RefConverter<BaseRefType, RefType> conv; 
                return conv::convert(ref);
            }