[ADD] base_sparse_field_jsonb

[bosd]

References
· PostgreSQL JSONB documentation: https://www.postgresql.org/docs/current/datatype-json.html
· GIN index documentation: https://www.postgresql.org/docs/current/gin.html
· OCA attribute_set: https://github.com/OCA/odoo-pim
· Related issue: OCA/odoo-pim#153

[rvalyi]

@bosd I'm not sure I understand why you depend on attribute_set here. You want to build a supercharged attribute_set module with JSONB, right? That sounds legit but should this be done inside the server-tools base_sparse_fields_jsonb module? Wouldn't it be better to leave base_sparse_fields_jsonb without attribute_set dependency and create another attribute_set_jsonb module in OCA/odoo-pim or make attribute_set depend on base_sparse_fields_jsonb eventually?

Disclaimer I didn't read your code carefully yet.

[bosd]

Wouldn't it be better to leave base_sparse_fields_jsonb without attribute_set dependency and create another attribute_set_jsonb module in OCA/odoo-pim or make attribute_set depend on base_sparse_fields_jsonb eventually?

@rvalyi I was indeed contemplating about this. Placing it in a separeate module in the pim repo would keep this base implementation more basic, clean and flexible. But there are some more modules / improvements to get to a full working stack. Wanted to prevent, that we end up with a lot of glue modules and puzzle to get it up and running.

I will later separate the latest commits and place it in their own module.

This module as it sits here, could potentially be merged into base_sparse, but for now i think it is better to keep it separate.