Add support to bind JSON and XML payloads to projection interfaces [DATACMNS-885]

[spring-projects-issues]

Oliver Drotbohm opened DATACMNS-885 and commented

It would be cool if incoming JSON based request or response bodies could be bound to a projection interface with the accessor methods defaulted to customizable JSON Path expressions:

{ "firstname" : "…", "lastname" : "…", … }

To access this data, this projection interface is sufficient:

@ProjectedPayload
interface User {
  // @JsonPath("$.firstname")
  String getFirstname();

  String getLastname();
}

By default the accessor would just be interpreted as direct nested properties. However, if the JSON Path expressions are customized to be more lenient, e.g. $..firstname. the payload can even change to this and the client would still work:

{ "user" : { "firstname" : "…", "lastname" : "…" }}

This is a concept very much inspired by XMLBeam. We might consider dropping our support in favor of a JSON variant of it in the future

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No further details from DATACMNS-885