[postgis-tickets] [PostGIS] #2616: Reduce geometry::text conversion in topology functions
PostGIS
trac at osgeo.org
Mon Jan 27 02:13:22 PST 2014
#2616: Reduce geometry::text conversion in topology functions
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Reporter: strk | Owner: strk
Type: enhancement | Status: new
Priority: low | Milestone: PostGIS 2.1.2
Component: topology | Version: 2.1.x
Keywords: |
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A single call to TopoGeo_addPolygon, against an _empty_ topology, results
in 24 calls to the text(geometry) function. The second most-called
function is "postgis_type_name" (6 calls).
The time spent in geometry::text is really not much (16th most expensive
function) but still it sounds like something worth cleaning up.
There are 2 tasks:
1. Avoid converting the geometry multiple times within a single function
2. Use EXECUTE .. USING expression (to avoid conversion to text as a
whole)
If someone is looking for an easy task to get used to the code, this is
the perfect task :)
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Ticket URL: <http://trac.osgeo.org/postgis/ticket/2616>
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