ST_Simplify in the PostGIS driver for performance

Description

By wrapping the geometry column in the SQL generated by the driver in an "appropriate" call to ST_Simplify, rendering can be sped up by avoiding pushing un-needed data through the pipes to GeoServer. This approach has been tested on MapNik and seen 75% increases in speed for complex inputs. The "appropriate" call will need to figure out a simplification parameter based on the size and bounds of the output image being generated.

Environment

None

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Unassigned

Reporter

codehaus

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None

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Priority

Low
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