Hi all
I have to design a wsgi app which is returning xml data to be consumed
by an iphone application. The iphone app sends an http request with
latitude and longitude from iphone. Based on these entries, I need to
query datastore table. The datastore table itself also contains
latitude and longitude values in each row. I need to apply a distance
calculation formula on this based on latitude and longitude values.
Then I need to sort them in ascending order of distance. My problem is
that we cannot reach at the final result before completing the
calculation and also I do not want to send large xml data to iphone
application to consume. Earlier I think to divide the process in two
phases
Phase 1: Does the calculation in wsgi application and generates the
entire xml and sent the same to iphone
PHase 2: iphone app sort the xml into ascending order
But it will result in performance issue both at iphone and wsig
application end. So is there any alternative that may give us limited
data and that too sorted so that iphone can ask for another slot with
no performance issue
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