Add support for ON JSON index type in RediSearch

[gkorland]

No description provided.

[mgravell]

any chance of an API reference here, or a "prior art" example of what this means?

[AvitalFineRedis]

Hi @mgravell
This means you will be able to create a JSON doc which RediSearch will index.

Currently, RediSearch have:

FT.CREATE {index} [ON {structure}] … SCHEMA {field} …

Where:
structure accepts only HASH,
field is the name of the field in the HASH.

The syntax is modified as:

FT.CREATE {index} [ON {structure}] … SCHEMA {identifier} [AS {attribute}] …

Where:
structure can be HASH or JSON.
identifier is either:
ON HASH: The field name of the HASH
ON JSON: a JSONPath.
attribute is the mapped name in RediSearch's index.

E.g.:

FT.CREATE idx ON JSON SCHEMA $.product.label AS label TEXT

By replacing the {field} part of the schema by {identifier} [AS {attribute}], a mapping logic is introduced, where a JSONPath is associated with an attribute name.