How does GeoTools read and manipulate extremely large data?
 
I have to support reading/writing (and quickly scanning) SHP files over
100MB. I have a spatial organizer that is very quick to identify features I
want to use, but I don't want to store every thing in memory (Maybe just
changes). Is there a lower level API that allows me to read the data by
index number? 
 
For example, my spatial query says I need to send to my app features 7, 100,
1000, 478, and 8764. Can I just ask the Datastore for those and it would
read them from the files? 
 
I know constantly reading the files will have a time hit, but memory usage
of over 200MB (for one file!) isn't practical either (not yet:)....
 
Has anyone dealt with extremely large files, any suggestions?
 
Thx,
 
Mark
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