Slow iteration through a JSONArray in GWT
Have you tried using overlays?
GWT Coding Basics - JavaScript Overlay Types
You can create overlay types pretty easily:-
// An overlay typeclass Customer extends JavaScriptObject { // Overlay types always have protected, zero-arg ctors protected Customer() { } // Typically, methods on overlay types are JSNI public final native String getFirstName() /*-{ return this.FirstName; }-*/; public final native String getLastName() /*-{ return this.LastName; }-*/; // Note, though, that methods aren't required to be JSNI public final String getFullName() { return getFirstName() + " " + getLastName(); }}Very easy to use and I think would be much faster than using JSONObject objects.
How do you use GWT ? Inside an IDE ?In my experience, having too many breakpoints slows down the execution flow, may be you could check that ?Particularly when I see that in production it seems fine...
If everything else fails, you can always write that in native Javascript and call it via JSNI.