Hi,
looking at one strange behavior of a JTS based process today I realized the
GeometryTypeConverterFactory is doing some unsafe conversions by default:
turning any geometry to its centroid, building linestrings out of any
geoemtry set of
points, and building a polygon the same way (which will often lead to an
invalid polygon).

On the other side we have safe conversions above those, the ones that
switch from
simple to multi-geometries (and it would also be safe to switch from multi
to simple
in case the multi has only one geometry).

I believe we should force the process wrappers to use safe conversions
only, and
have the above "acrobatic" conversions be considered unsafe (actually the
extraction
of the polygon from a set of point makes no sense at all to me).

Opinions?

Cheers
Andrea

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