Experimental Physics and
Industrial Control System

Hi Karl,

On 4/5/23 06:25, Karl Vestin via Core-talk wrote:

Dear all,

Are there any functions available to generate a NTTable from a JSON object or JSON schema? I have found a function to generate JSON from a PVObject, but not the other way around.

P4P has a helper which attempts to transpose a list of objects to a set of arrays needed
by NTTable.  My original idea was python RDB interactions.  A list of objects should be
similar enough to a database cursor, although I haven't done much testing.

https://github.com/mdavidsaver/p4p/blob/master/example/json_server.py

I don't recall ever doing anything with JSON schemas.  So I don't know what libraries
are available.  I don't think the builtin 'json' package handles these.  Something like
a schema might be a way to avoid needing to programmatically specify the column names and
data types.

References:

Create NTTable from JSON Karl Vestin via Core-talk

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