Hi,

when editing large object graphs on the client-side, there are currently 
two problems regarding performance:

1) Entity proxies could not be modified when firing a RequestContext. A 
diff will be done nevertheless, which costs CPU time. There could be an 
annotation which marks entity proxies as immutable on the client-side and 
forces RF to always send the EntityProxyId.

2) All reachable value proxies on the edited data will be sent, even if the 
owner entity proxies did not change. This increases the payload size and 
could be avoided by sending only those values proxies which are reachable 
through actually edited entity proxies (or request arguments). There is 
already a todo in 
https://code.google.com/p/google-web-toolkit/source/browse/trunk/user/src/com/google/web/bindery/requestfactory/shared/impl/AbstractRequestContext.java#1211

Are you aware of those problems, and are they relevant enough to be taken 
into account in one of the next releases?

Also is there a plan to add support for Maps (
https://codereview.appspot.com/6132056/.)?

Regards,
Stefan Ollinger

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