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fix for bug #801243 Assertion `(0)' failed in Gis_geometry_collection::init_from_opresult on ST_UNION

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If the result contains a polygon with a hole, consequitive shapes weren't calculated
        properly, as the hole appeared as shape in the result, but actually it's a single shape
        with the surrounding polygon. It's more natural to use the size of the result as
        a border instead of the number of resulting shapes.

per-file comments:
  mysql-test/r/gis-precise.result
fix for bug #801243 Assertion `(0)' failed in Gis_geometry_collection::init_from_opresult on ST_UNION 
        test result updated.
  mysql-test/t/gis-precise.test
fix for bug #801243 Assertion `(0)' failed in Gis_geometry_collection::init_from_opresult on ST_UNION 
        test case added.
  sql/spatial.cc
fix for bug #801243 Assertion `(0)' failed in Gis_geometry_collection::init_from_opresult on ST_UNION 
        check the data lenght instead of number of shapes.
  sql/spatial.h
fix for bug #801243 Assertion `(0)' failed in Gis_geometry_collection::init_from_opresult on ST_UNION 
        check the data lenght instead of number of shapes.
This commit is contained in:
Alexey Botchkov
2011-06-30 18:18:27 +05:00
parent b826c88841
commit 4f49cdf8d3
4 changed files with 59 additions and 45 deletions
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7
mysql-test/r/gis-precise.result
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@ -202,3 +202,10 @@ result
SELECT ST_Equals(PointFromText('POINT (12 13)'),PointFromText('POINT (12 13)')) as result;
result
1
SELECT astext(ST_UNION (
PolyFromText('POLYGON(( 2 2 ,3 2,2 7,2 2),( 0 0,8 2,1 9,0 0))'),
ExteriorRing( Envelope( MultiLineStringFromText('MULTILINESTRING((3 4,5 3),(3 0,0 5))')))));
astext(ST_UNION (
PolyFromText('POLYGON(( 2 2 ,3 2,2 7,2 2),( 0 0,8 2,1 9,0 0))'),
ExteriorRing( Envelope( MultiLineStringFromText('MULTILINESTRING((3 4,5 3),(3 0,0 5))')))))
GEOMETRYCOLLECTION(POLYGON((0 0,1 9,8 2,0 0),(2 2,2 7,3 2,2 2)),LINESTRING(0 0,5 0,5 1.25),LINESTRING(0 0,0 5,0.555555555555556 5),LINESTRING(2.4 5,2 5))