There are three main tiers.
1) The client. (gwt/browser).
2) The frontend (your server code),
3) The backend (google's magic),
At the backend, the entity is serialized as whole, but between the frontend
and backend, you can decide to request only a sub set of the enities
properties.
-
The solution is store a map of properties as a single entity property, may
sound a bit confusing, so an example:
HashMap<String, String> map = new HashMap<String, String>(4000);
for(4000) {
...
map .put("id", "value");
...
}
entity.setUnindexedProperty("dto", map) ;
put();
In this case, 4000 items are stored in a single put.
The entity itself has only two 'columns''. The key and the serialized data
field named "dto".
The next step is to write a wrapper class around the HashMap, and call it
UserDTO, to transport this object to and from GWT.
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