Changes between Version 7 and Version 8 of BluePrintRegionsAndIncidents

Timestamp:

02/16/11 15:59:00 (14 years ago)

Author:

Pat Tressel

Comment:

--

BluePrintRegionsAndIncidents

@@ -84 +84 @@
    location group to be a member of a location group. That's not required, though.)
 
+If the test for whether a location is in a region is expensive (e.g. if it uses
+polygon overlap), we may want to cache the membership (similar to caching the
+location's hierarchy path). A location can belong to more than one region, so
+this would be a list of regions (specified by their region location ids). Would
+need to record both positive and negative results, i.e. if we test a location
+against a region and find it's not in that region, we need to record that to
+avoid redoing the test. The cache would be invalidated if the location's
+parentage or lon, lat changes.  This needs careful consideration, to handle invalidating
+the region test results if the region changes.
+
 === Incident discussion ===