edm::refitem::GetRefPtrImpl< C, T, F, KEY > Struct Template Reference

#include <RefItemGet.h>

Static Public Member Functions
static T const *	getRefPtr_ (RefCore const &product, KEY const &key)

Detailed Description

template<typename C, typename T, typename F, typename KEY>
struct edm::refitem::GetRefPtrImpl< C, T, F, KEY >

Definition at line 26 of file RefItemGet.h.

Member Function Documentation

getRefPtr_()

template<typename C , typename T , typename F , typename KEY >

static T const* edm::refitem::GetRefPtrImpl< C, T, F, KEY >::getRefPtr_ ( RefCore const &  product, KEY const &  key  )

inlinestatic

Definition at line 27 of file RefItemGet.h.

                                                                         {
        T const* item = static_cast<T const*>(product.productPtr());
        if (item != nullptr) {
          return item;
        }
        auto prodGetter = product.productGetter();
        if (nullptr == prodGetter) {
          item = static_cast<T const*>(product.productPtr());
          if (item != nullptr) {
            //Another thread updated the value since we checked
            return item;
          }
        }
        C const* prod = edm::template getProductWithCoreFromRef<C>(product, prodGetter);
        /*
        typename C::const_iterator it = prod->begin();
         std::advance(it, item.key());
         T const* p = it.operator->();
        */
        F func;
        item = func(*prod, key);
        product.setProductPtr(item);
        return item;
      }

References gen::C, F(), TrackCollections2monitor_cff::func, B2GTnPMonitor_cfi::item, crabWrapper::key, dumpMFGeometry_cfg::prod, edm::RefCore::productGetter(), edm::RefCore::productPtr(), edm::RefCore::setProductPtr(), and svgfig::template().

Referenced by edm::getRefPtr().