No support for dotted notation in query.selectKeys()

[natario1]

parse-server supports dotted notation in ParseQuery selectKeys.

ParseQuery query = ParseQuery.getQuery(“Post");
query.include(“author”);
query.selectKeys(Arrays.asList(“author”, “author.picture”));
// Get only the picture of the authors of these posts.

The request is sent to the server and the response is OK, but by default the Android SDK assumes that included objects are complete, returning incorrect results for various APIs and breaking a few things like #595 #596 .

Specifically the incomplete (but assumed to be complete) state will overwrite the current state for that object. So, for example, even if we have full data in memory for the “author” object, it will now have only “picture”, and even worse fetchIfNeeded() will do nothing.

[natario1]

I am going to fix this in #596 since the issues are intertwined.