Florine de Geus

[DF] Add initial implementation for snapshotting to RNTuple

1

This PR adds a first iteration of snapshotting to RNTuple from an RDataFrame. It uses the existing `Snapshot` interface, with an addition to `RSnapshotOptions`, `kOutputFormat`. This option can be set...

[ntuple] Fix item type names for STL map fields

1

With the addition of `RIntegralTypeMap` (PR https://github.com/root-project/root/pull/16039), most of the type name deduction for type-erased fields was moved from the type translation map to `RField`'s template specialization. Upon creation of...

Necessary for Snapshot-related tests, now that snapshotting to RNTuple is being added (https://github.com/root-project/root/pull/15750).

[ntuple] Enable subfield access in `REntry`

2

This PR adds the possibility to add subfields (with a provided parent) to the `RNTupleModel`, and subsequently access their values in the `REntry` using their fully qualified names (`parent.subfield`). Checks...

[ntuple] Add MT index building

1

This PR introduces the first steps towards MT support for the `RNTupleIndex`, by enabling mulithreaded building of the index. To enable this, the index itself now manages multiple _index partitions_,...

[ntuple] Add `RNTupleJoinProcessor`

1

TODO description