Bug #18738
PtrMaker can create pointers only for std::vector data products
Occurs In:
Scope:
Experiment:
LArSoft
SSI Package:
art
Description
The class art::PtrMaker (source:art/Persistency/Common/PtrMaker.h#L55) was written with the idea of supporting the creation of pointers from "any" container data products. Its relevant constructor:
//Creates a PtrMaker that creates Ptrs in to a collection of type C created by the module of type MODULETYPE, where the collection has instance name "instance"
template <class EVENT, class MODULETYPE, class C = std::vector<T>>
PtrMaker(EVENT const & evt, MODULETYPE const& module, std::string const& instance = std::string());C for the container data product itself.But to my knowledge that template argument cannot be explicitly specified in a call, and it's not automatically detected either. That makes it impossible to effectively use the intended feature.
History
#1 Updated by Kyle Knoepfel over 2 years ago
- Status changed from New to Accepted
- Estimated time set to 2.00 h
Oops.
#2 Updated by Kyle Knoepfel over 2 years ago
- Description updated (diff)
#3 Updated by Kyle Knoepfel over 2 years ago
- Category set to Application
- Status changed from Accepted to Resolved
- Assignee set to Kyle Knoepfel
- Target version set to 2.10.00
- % Done changed from 0 to 100
- Scope deleted (
Internal) - Occurs In 2.09.06 added
- SSI Package art added
#4 Updated by Kyle Knoepfel over 2 years ago
- Status changed from Resolved to Closed
In order to facilitate the behavior you have requested, we have introduced the static member function 'create':
void MyProducer::produce(art::Event& e) override
{
auto const maker = art::PtrMaker<int>::create<IntCollection>(e, *this, "my_instance");
...
}