Add variable bindings to `transact` #227

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opened 2020-08-06 16:56:58 +00:00 by gburd · 0 comments

gburd commented

2020-08-06 16:56:58 +00:00

(Migrated from github.com)

The more queries and transactions I write as a library author building on top of Mentat, the more similar the query and transact syntax feels, and the more I want to bind variables in transact strings. That is, I want to be able to transact

[:db/add [:credential/id "id"] :credential/title ?title]

and bind ?title to "A title coming from user-space." independently. This is just like the query syntax and like SQL, etc. We already have some support this pattern in the term builder; this would just push it, in a more uniform manner, to the transactor.

This is similar to https://github.com/mozilla/mentat/issues/631, but simpler.

The more queries and transactions I write _as a library author_ building on top of Mentat, the more similar the query and transact syntax feels, and the more I want to bind variables in transact strings. That is, I want to be able to transact ```edn [:db/add [:credential/id "id"] :credential/title ?title] ``` and bind `?title` to `"A title coming from user-space."` independently. This is just like the query syntax and like SQL, etc. We already have some support this pattern in the term builder; this would just push it, in a more uniform manner, to the transactor. This is similar to https://github.com/mozilla/mentat/issues/631, but simpler.