[OLINGO-317] JSON serialization for server use case

• Type: New Feature
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: (Java) V4 4.0.0-beta-01
• Fix Version/s: (Java) V4 4.0.0-beta-01
• Component/s: odata4-server
• Assignee: mibo
• Reporter: mibo
• Created: 06/Jun/14 12:48
• Updated: 06/Oct/14 11:32
• Resolved: 06/Oct/14 11:32

Description

Hi together,

I started to take a look into the JSON Serialization for the server use case.

Therefore I checked the "JSONEntitySerializer" in the commons package and found following points which could be improved:

• The common Entity (JSONEntity and AtomEntity) with the separated Property and Value interfaces is complex and overloaded. Perhaps this could be improved by reducing (merge?) Property and Value to a single class. Furthermore the JSONEntity and AtomEntity could be merged into a single Entity.
• The use of the Jackson ObjectMapper (in JSON case) seems not necessary. Perhaps the AbstractODataSerializer could use the "JSONEntitySerializer" similar to the "AtomSerializer" (This would also help in merging JSONEntity and AtomEntity by removing the @Json* annotations).

And following points are missing but necessary for server usage:

• Use of an existing EDM for type information (instead of setting and/or guessing type like in client use case)
• Differentiation between the metadata output formats "json-full/-minimal/-none"

Based on above points I think about the creation of an own JSON Serializer for the server.

Kind regards,
Michael