cet-is » art

Implemented with commit art:f12a9f9. The return type for this implementation is void for now. It will likely change to something like ProductToken<T>.

There are now six different interface calls that may be invoked:

// Unconditional retrievals
consumes<MyProd>(input_tag);     // => ProductToken<MyProd>
consumesMany<MyProd>();          // => void
consumesView<MyElem>(input_tag); // => ViewToken<MyElem>

// Conditional retrievals (e.g. within 'if' blocks)
mayConsume<MyProd>(input_tag);     // => ProductToken<MyProd>
mayConsumeMany<MyProd>();          // => void
mayConsumeView<MyElem>(input_tag); // => ViewToken<MyElem>

The tokens can be provided to the product retrieval interface--e.g. event.getValidHandle(token)--for product lookup. See consumes documentation here.