Describe the enhancement requested
OpaqueType uses RapidJSON for JSON parsing and deserialization under cpp/src/arrow/extension.
Replace the RapidJSON usage with the existing simdjson helpers and On-Demand API while preserving the existing validation and deserialization behavior.
Additional context
This is a sub-task of GH-50873.
Parent Issue: GH-35460.
Component(s)
C++
Describe the enhancement requested
OpaqueTypeuses RapidJSON for JSON parsing and deserialization undercpp/src/arrow/extension.Replace the RapidJSON usage with the existing simdjson helpers and On-Demand API while preserving the existing validation and deserialization behavior.
Additional context
This is a sub-task of GH-50873.
Parent Issue: GH-35460.
Component(s)
C++