Is it possible to get a ReadTransaction from a WriteTransaction?

[wont-work]

I tried looking in the docs and wasn't able to find anything but still asking here just in case I missed something. Is it possible? Both of them seem to have pretty much the same methods so it feels like it should be possible, but I don't know too much about the internals of fjall to turn this into a feature request.

I have a few functions that take in transaction handles to do their work as part of a larger transaction, and right now I have to duplicate their internals both read and write transactions separately. Being able to "cast" a WriteTransaction into a ReadTransaction (or perhaps a common trait they both implement?) would help a lot.

[marvin-j97]

TL;DR Currently no, but...

If the SSI feature flag is used, a write transaction that does not write is basically the same as a read transaction. Though SSI transactions need extra retry logic.

The R/W split is only really necessary when using single-writer transactions (the default). So the API will probably change in V3 go better reflect that.

A Readable kind of transaction that is implemented by WriteTransaction is probably a good idea.

[marvin-j97]

See #188