In looking through the doc it seems canFetchMore() will be called any time hits the "end" of the data it has to display. What isn't clear is how one tells which direction the table is attempting to move. When one has a limited viewport, say 30-100 rows, windowing over a database which is gigs in size, how does canFetchMore() in the model determine which direction it should be checking? I assume the same test will work when fetchMore() is called so it nows which direction to fetch data.
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