observe_rsc_get_raw/3

Convert raw stored resource data to its current representation.

Use this notification for resource migrations, including changes to property structures and serialization formats, such as converting legacy props values to JSON-friendly structures for props_json.

Type: foldr

Runs after decoding stored properties, before caching and rsc_get. It also runs when the database layer reads existing rsc properties to merge an update; that accumulator contains only custom properties, without database columns (is_props_only = true). Full raw resource reads set is_props_only = false.

Observers must be idempotent and only convert stored data. Every returned value must be suitable for saving in the rsc record. Do not add computed fields, request-specific values, or perform database writes. Use rsc_get for computed fields. Reads themselves do not persist the conversion.

#rsc_get_raw{} properties:

• id: m_rsc:resource_id()
• is_props_only: boolean(), defaults to false. true means only the merged props/props_json properties; false means the full raw resource record.