Feature: Jsonata json type inference

[rmanibus]

It would be great if on top of transforming data, Jsonata was also able to transform the schema of the data.

I have been experimenting a little bit, and it is fairly straight forward to re-use the same AST but to modify the evaluation function to work on a Json Scheme instead of a Json payload.
we would then have:

expression -> AST
evaluateJson(AST, jsonInput) -> jsonOutput
evaluateSchema(AST, jsonSchemaInput) -> jsonSchemaOutput

[brentshulman-silkline]

This seems interesting. Can you give me a practical example to help me (potential JSONata user) understand a bit more?

[rmanibus]

Sure !
Imagine a solution where users can author jsonata expressions.
Given the input type is well defined, this feature would allow to infer the output type dynamically and show it on screen. It would also allow to advertise the type for consumption in another expression or any other system.

[brentshulman-silkline]

Oh, I think that would be super helpful. Thanks for the explanation!

[brentshulman-silkline]

Any luck pushing this forward?

[rmanibus]

I started to look into it, I have some basic examples working