1.1.1 ETagable

ETagable Interface

This interface asks for a setter and getter for etags, and is not directly concerned with how you store and/or generate it.

String getEtag();
ETagable setEtag(String etag);

It also has a default implementation to construct the etag of the object, which ends up in a map which also includes and subobjects that are also ETagable. This can be overriden if you want a hardcoded version of this.

default Map<String, String> generateAndSetEtag(Map<String, String> map) { ... }

The last method to override is for generating the unique etag identifier for a particular object:

String generateEtagKeyIdentifier();