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#ifndef DataFormats_Common_RefToPtr_h
#define DataFormats_Common_RefToPtr_h
/*----------------------------------------------------------------------
Ref: A function template for conversion from Ref to Ptr
----------------------------------------------------------------------*/
/*
----------------------------------------------------------------------*/
#include "DataFormats/Common/interface/Ref.h"
#include "DataFormats/Common/interface/RefTraits.h"
#include "DataFormats/Common/interface/Ptr.h"
namespace edm {
template <typename C>
Ptr<typename C::value_type> refToPtr(
Ref<C, typename C::value_type, refhelper::FindUsingAdvance<C, typename C::value_type> > const& ref) {
typedef typename C::value_type T;
if (ref.isNull()) {
return Ptr<T>();
}
if (ref.isTransient()) {
return Ptr<T>(ref.get(), ref.key());
} else {
//Another thread could change this value so get only once
EDProductGetter const* getter = ref.productGetter();
if (getter) {
return Ptr<T>(ref.id(), ref.key(), getter);
}
}
return Ptr<T>(ref.id(), ref.get(), ref.key());
}
} // namespace edm
#endif
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