SIRI Lite ET/SX response entry possibility for XML or JSON

[Jouca]

Is your feature request related to a problem? Please describe.
Currently, SIRI lite ET/SX is taking an XML, however based on the documentation of OTP said on chapter XML - JSON conversion rules for SIRI responses, it's possible to have a case that JSON could be taken.

Goal / high level use-case
As a developer using OTP and using a SIRI ET/SX Lite feed from an operator, it would be useful to have a way to select a XML or a JSON response type on the router.

Describe the solution you'd like
A solution that could be done is to use a new field adapter that we could select between json and xml the response type for SIRI ET/SX Lite data.

[t2gran]

We discussed this in a developer meeting today. In general we do not think it is a good idea, because we cannot see any big benefits for providing support for JSON. None of the "core" developers on OTP wanted this, but you may implement it as long as you also maintain it. I am not sure how much extra code it would be to do it. If possible this should be put in a OTP Sandbox.

Points mentioned:

• More difficult to validate the data against the schema (not sure if a JSON schema exist for this). And the mapping from XML/XSD to JSON/JSON Schema can be tricky.
• Higher maintenance cost
• Increased complexity - our primary implementation target XML, and the JSON support is secondary

Feel free to elaborate on why you need it.