JsonbValue to Jsonb conversion

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От Dmitry Dolgov
Тема JsonbValue to Jsonb conversion
Дата
Msg-id CA+q6zcVkN5KjB+7wZBj2tv7VmFMRh9oJhTAazz0wfnx21aNUWQ@mail.gmail.com
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Ответы Re: JsonbValue to Jsonb conversion  (Andrew Dunstan <andrew@dunslane.net>)
Список pgsql-hackers
Hi all,

I'm faced with some troubles about the jsonb implementation, and I hope I'll get little advice =)
If I understand correctly, an abstract function for jsonb modification should have the following stages:

Jsonb -> JsonbValue -> Modification -> JsonbValue -> Jsonb

One can convert the JsonbValue to the Jsonb only by JsonbValueToJsonb function. So, my question is can be JsonbValue, that contains few jbvBinary elements, converted to Jsonb by this function? It will be very useful, if you want modify only small part of your JsonbValue (e.g. replace value of some key). But when I'm trying to do this, an exception "unknown type of jsonb container" appears. Maybe I missed something? Or is there another approach to do this conversion?

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