Support querying non-JSON data sources without full JSON serialization (e.g., via stream or interface)

[s2quake]

Hello,
I’m an independent developer currently implementing a blockchain library.
One of my goals is to create a CLI tool that can inspect the blockchain’s on-chain database content.

For example, the command might look like this:

planet repo inspect .data/db --query <expression>

While exploring ways to achieve this, I discovered JMESPath and found this project through GitHub.
Although I haven’t directly used it yet, I reviewed the code and discussed it with GitHub Copilot.
However, I wasn’t able to find a way to accomplish what I need.

As far as I understand, to use query expressions, we need to pass JSON data to the JmesPath.Transform method.
But in my case, the underlying data comes from a database that could become very large, making full JSON serialization impractical.

It would be extremely useful if there were an interface or mechanism to query non-JSON data directly, for example through a stream or a custom adapter, rather than needing to serialize everything into JSON first.

Is there any plan or consideration to support this kind of functionality in the future?

Thank you!