Changes between Version 7 and Version 8 of BluePrintRegionsAndIncidents


Ignore:
Timestamp:
02/16/11 15:59:00 (11 years ago)
Author:
Pat Tressel
Comment:

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  • BluePrintRegionsAndIncidents

    v7 v8  
    8484   location group to be a member of a location group. That's not required, though.)
    8585
     86If the test for whether a location is in a region is expensive (e.g. if it uses
     87polygon overlap), we may want to cache the membership (similar to caching the
     88location's hierarchy path). A location can belong to more than one region, so
     89this would be a list of regions (specified by their region location ids). Would
     90need to record both positive and negative results, i.e. if we test a location
     91against a region and find it's not in that region, we need to record that to
     92avoid redoing the test. The cache would be invalidated if the location's
     93parentage or lon, lat changes.  This needs careful consideration, to handle invalidating
     94the region test results if the region changes.
     95
    8696=== Incident discussion ===
    8797