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bug 801466 ST_INTERSECTION() returns invalid value on empty intersection in maria-5.3-gis. 

We didn't implement an empty geometry. And returning NULL instead of it is not
    quite correct. So here is the implementation of the empty value as GEOMETRYCOLLECTION().

per-file comments:
  mysql-test/r/gis-precise.result
bug 801466 ST_INTERSECTION() returns invalid value on empty intersection in maria-5.3-gis.
    test result updated.

  mysql-test/r/gis.result
bug 801466 ST_INTERSECTION() returns invalid value on empty intersection in maria-5.3-gis.
    test result updated.

  mysql-test/t/gis-precise.test
bug 801466 ST_INTERSECTION() returns invalid value on empty intersection in maria-5.3-gis.
    test case added.

  mysql-test/t/gis.test
bug 801466 ST_INTERSECTION() returns invalid value on empty intersection in maria-5.3-gis.
    test case added.

  sql/field.cc
bug 801466 ST_INTERSECTION() returns invalid value on empty intersection in maria-5.3-gis.
    store GEOMETRYCOLLECTION() properly.

  sql/gcalc_tools.cc
bug 801466 ST_INTERSECTION() returns invalid value on empty intersection in maria-5.3-gis.
    create the GEOMETRYCOLLECTION() for the empty result.

  sql/gstream.h
bug 801466 ST_INTERSECTION() returns invalid value on empty intersection in maria-5.3-gis.
    next_symbol() added.

  sql/spatial.cc
bug 801466 ST_INTERSECTION() returns invalid value on empty intersection in maria-5.3-gis.
    code modified to handle 0 geometries in the GEOMETRYCOLLECTION properly.
pull/843/head
Alexey Botchkov 14 years ago
parent
c937b7588f
commit
eefff87652
8 changed files with 55 additions and 22 deletions
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  1. 3
      mysql-test/r/gis-precise.result
  2. 23
      mysql-test/r/gis.result
  3. 3
      mysql-test/t/gis-precise.test
  4. 3
      mysql-test/t/gis.test
  5. 2
      sql/field.cc
  6. 9
      sql/gcalc_tools.cc
  7. 8
      sql/gstream.h
  8. 26
      sql/spatial.cc

3
mysql-test/r/gis-precise.result
View File

@ -317,3 +317,6 @@ AsText( ST_UNION(
PolygonFromText(' POLYGON( ( 2 2 , 3 2 , 7 5 , 2 0 , 2 2 ) ) ') ,
PolygonFromText(' POLYGON( ( 2 2 , 3 2 , 3 3 , 2 5 , 2 2 ) ) ') ) )
POLYGON((2 0,2 5,3 3,3 2,7 5,2 0))
SELECT AsText(ST_INTERSECTION(LinestringFromText('LINESTRING(1 1, 2 2)'), GeometryFromText('LINESTRING(3 3, 4 4)')));
AsText(ST_INTERSECTION(LinestringFromText('LINESTRING(1 1, 2 2)'), GeometryFromText('LINESTRING(3 3, 4 4)')))
GEOMETRYCOLLECTION()

23
mysql-test/r/gis.result
View File

@ -66,7 +66,8 @@ INSERT INTO gis_multi_polygon VALUES
(119, MPolyFromWKB(AsWKB(MultiPolygon(Polygon(LineString(Point(0, 3), Point(3, 3), Point(3, 0), Point(0, 3)))))));
INSERT INTO gis_geometrycollection VALUES
(120, GeomCollFromText('GEOMETRYCOLLECTION(POINT(0 0), LINESTRING(0 0,10 10))')),
(121, GeometryFromWKB(AsWKB(GeometryCollection(Point(44, 6), LineString(Point(3, 6), Point(7, 9))))));
(121, GeometryFromWKB(AsWKB(GeometryCollection(Point(44, 6), LineString(Point(3, 6), Point(7, 9)))))),
(122, GeomFromText('GeometryCollection()'));
INSERT into gis_geometry SELECT * FROM gis_point;
INSERT into gis_geometry SELECT * FROM gis_line;
INSERT into gis_geometry SELECT * FROM gis_polygon;
@ -109,6 +110,7 @@ SELECT fid, AsText(g) FROM gis_geometrycollection;
fid AsText(g)
120 GEOMETRYCOLLECTION(POINT(0 0),LINESTRING(0 0,10 10))
121 GEOMETRYCOLLECTION(POINT(44 6),LINESTRING(3 6,7 9))
122 GEOMETRYCOLLECTION()
SELECT fid, AsText(g) FROM gis_geometry;
fid AsText(g)
101 POINT(10 10)
@ -132,6 +134,7 @@ fid AsText(g)
119 MULTIPOLYGON(((0 3,3 3,3 0,0 3)))
120 GEOMETRYCOLLECTION(POINT(0 0),LINESTRING(0 0,10 10))
121 GEOMETRYCOLLECTION(POINT(44 6),LINESTRING(3 6,7 9))
122 GEOMETRYCOLLECTION()
SELECT fid, Dimension(g) FROM gis_geometry;
fid Dimension(g)
101 0
@ -155,6 +158,7 @@ fid Dimension(g)
119 2
120 1
121 1
122 0
SELECT fid, GeometryType(g) FROM gis_geometry;
fid GeometryType(g)
101 POINT
@ -178,6 +182,7 @@ fid GeometryType(g)
119 MULTIPOLYGON
120 GEOMETRYCOLLECTION
121 GEOMETRYCOLLECTION
122 GEOMETRYCOLLECTION
SELECT fid, IsEmpty(g) FROM gis_geometry;
fid IsEmpty(g)
101 0
@ -201,6 +206,7 @@ fid IsEmpty(g)
119 0
120 0
121 0
122 0
SELECT fid, AsText(Envelope(g)) FROM gis_geometry;
fid AsText(Envelope(g))
101 POLYGON((10 10,10 10,10 10,10 10,10 10))
@ -224,9 +230,10 @@ fid AsText(Envelope(g))
119 POLYGON((0 0,3 0,3 3,0 3,0 0))
120 POLYGON((0 0,10 0,10 10,0 10,0 0))
121 POLYGON((3 6,44 6,44 9,3 9,3 6))
122 POLYGON((1.79769313486232e+308 1.79769313486232e+308,-1.79769313486232e+308 1.79769313486232e+308,-1.79769313486232e+308 -1.79769313486232e+308,1.79769313486232e+308 -1.79769313486232e+308,1.79769313486232e+308 1.79769313486232e+308))
explain extended select Dimension(g), GeometryType(g), IsEmpty(g), AsText(Envelope(g)) from gis_geometry;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE gis_geometry ALL NULL NULL NULL NULL 21 100.00
1 SIMPLE gis_geometry ALL NULL NULL NULL NULL 22 100.00
Warnings:
Note 1003 select st_dimension(`test`.`gis_geometry`.`g`) AS `Dimension(g)`,st_geometrytype(`test`.`gis_geometry`.`g`) AS `GeometryType(g)`,st_isempty(`test`.`gis_geometry`.`g`) AS `IsEmpty(g)`,st_astext(st_envelope(`test`.`gis_geometry`.`g`)) AS `AsText(Envelope(g))` from `test`.`gis_geometry`
SELECT fid, X(g) FROM gis_point;
@ -345,6 +352,7 @@ SELECT fid, NumGeometries(g) from gis_geometrycollection;
fid NumGeometries(g)
120 2
121 2
122 0
explain extended SELECT fid, NumGeometries(g) from gis_multi_point;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE gis_multi_point ALL NULL NULL NULL NULL 3 100.00
@ -369,10 +377,12 @@ SELECT fid, AsText(GeometryN(g, 2)) from gis_geometrycollection;
fid AsText(GeometryN(g, 2))
120 LINESTRING(0 0,10 10)
121 LINESTRING(3 6,7 9)
122 NULL
SELECT fid, AsText(GeometryN(g, 1)) from gis_geometrycollection;
fid AsText(GeometryN(g, 1))
120 POINT(0 0)
121 POINT(44 6)
122 NULL
explain extended SELECT fid, AsText(GeometryN(g, 2)) from gis_multi_point;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE gis_multi_point ALL NULL NULL NULL NULL 3 100.00
@ -386,16 +396,21 @@ FROM gis_geometrycollection g1, gis_geometrycollection g2 ORDER BY first, second
first second w c o e d t i r
120 120 1 1 0 1 0 1 1 1
120 121 0 0 1 0 0 0 1 0
120 122 0 1 0 0 1 0 0 0
121 120 0 0 1 0 0 0 1 0
121 121 1 1 0 1 0 1 1 1
121 122 0 1 0 0 1 0 0 0
122 120 1 0 0 0 1 0 0 0
122 121 1 0 0 0 1 0 0 0
122 122 1 1 0 1 1 0 0 0
explain extended SELECT g1.fid as first, g2.fid as second,
Within(g1.g, g2.g) as w, Contains(g1.g, g2.g) as c, Overlaps(g1.g, g2.g) as o,
Equals(g1.g, g2.g) as e, Disjoint(g1.g, g2.g) as d, Touches(g1.g, g2.g) as t,
Intersects(g1.g, g2.g) as i, Crosses(g1.g, g2.g) as r
FROM gis_geometrycollection g1, gis_geometrycollection g2 ORDER BY first, second;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE g1 ALL NULL NULL NULL NULL 2 100.00 Using temporary; Using filesort
1 SIMPLE g2 ALL NULL NULL NULL NULL 2 100.00 Using join buffer (flat, BNL join)
1 SIMPLE g1 ALL NULL NULL NULL NULL 3 100.00 Using temporary; Using filesort
1 SIMPLE g2 ALL NULL NULL NULL NULL 3 100.00 Using join buffer (flat, BNL join)
Warnings:
Note 1003 select `test`.`g1`.`fid` AS `first`,`test`.`g2`.`fid` AS `second`,st_within(`test`.`g1`.`g`,`test`.`g2`.`g`) AS `w`,st_contains(`test`.`g1`.`g`,`test`.`g2`.`g`) AS `c`,mbroverlaps(`test`.`g1`.`g`,`test`.`g2`.`g`) AS `o`,mbrequals(`test`.`g1`.`g`,`test`.`g2`.`g`) AS `e`,mbrdisjoint(`test`.`g1`.`g`,`test`.`g2`.`g`) AS `d`,st_touches(`test`.`g1`.`g`,`test`.`g2`.`g`) AS `t`,mbrintersects(`test`.`g1`.`g`,`test`.`g2`.`g`) AS `i`,st_crosses(`test`.`g1`.`g`,`test`.`g2`.`g`) AS `r` from `test`.`gis_geometrycollection` `g1` join `test`.`gis_geometrycollection` `g2` order by `test`.`g1`.`fid`,`test`.`g2`.`fid`
DROP TABLE gis_point, gis_line, gis_polygon, gis_multi_point, gis_multi_line, gis_multi_polygon, gis_geometrycollection, gis_geometry;

3
mysql-test/t/gis-precise.test
View File

@ -200,4 +200,7 @@ SELECT AsText( ST_UNION(
PolygonFromText(' POLYGON( ( 2 2 , 3 2 , 7 5 , 2 0 , 2 2 ) ) ') ,
PolygonFromText(' POLYGON( ( 2 2 , 3 2 , 3 3 , 2 5 , 2 2 ) ) ') ) );
#bug 801466 ST_INTERSECTION() returns invalid value on empty intersection in maria-5.3-gis
SELECT AsText(ST_INTERSECTION(LinestringFromText('LINESTRING(1 1, 2 2)'), GeometryFromText('LINESTRING(3 3, 4 4)')));

3
mysql-test/t/gis.test
View File

@ -62,7 +62,8 @@ INSERT INTO gis_multi_polygon VALUES
INSERT INTO gis_geometrycollection VALUES
(120, GeomCollFromText('GEOMETRYCOLLECTION(POINT(0 0), LINESTRING(0 0,10 10))')),
(121, GeometryFromWKB(AsWKB(GeometryCollection(Point(44, 6), LineString(Point(3, 6), Point(7, 9))))));
(121, GeometryFromWKB(AsWKB(GeometryCollection(Point(44, 6), LineString(Point(3, 6), Point(7, 9)))))),
(122, GeomFromText('GeometryCollection()'));
INSERT into gis_geometry SELECT * FROM gis_point;
INSERT into gis_geometry SELECT * FROM gis_line;

2
sql/field.cc
View File

@ -8008,7 +8008,7 @@ int Field_geom::store(const char *from, uint length, CHARSET_INFO *cs)
goto err;
// Check given WKB
uint32 wkb_type;
if (length < SRID_SIZE + WKB_HEADER_SIZE + SIZEOF_STORED_DOUBLE*2)
if (length < SRID_SIZE + WKB_HEADER_SIZE + 4)
goto err;
wkb_type= uint4korr(from + SRID_SIZE + 1);
if (wkb_type < (uint32) Geometry::wkb_point ||

9
sql/gcalc_tools.cc
View File

@ -137,6 +137,8 @@ int Gcalc_function::count_internal()
cur_func+= 4;
if (next_func == op_shape)
return i_states[c_op & ~(op_any | op_not)] ^ mask;
if (n_ops == 0)
return mask;
result= count_internal();
@ -442,11 +444,9 @@ void Gcalc_result_receiver::reset()
int Gcalc_result_receiver::get_result_typeid()
{
if (!n_shapes)
return 0;
if (collection_result)
if (!n_shapes || collection_result)
return Geometry::wkb_geometrycollection;
switch (common_shapetype)
{
case Gcalc_function::shape_polygon:
@ -1186,6 +1186,7 @@ int Gcalc_operation_reducer::get_result(Gcalc_result_receiver *storage)
poly_instance *polygons= NULL;
*m_res_hook= NULL;
while (m_result)
{
Gcalc_function::shape_type shape= m_result->type;

8
sql/gstream.h
View File

@ -57,6 +57,14 @@ public:
m_cur++;
return 0;
}
/* Returns the next notempty character. */
char next_symbol()
{
skip_space();
if (m_cur >= m_limit)
return 0; /* EOL meet. */
return *m_cur;
}
void set_error_msg(const char *msg);
// caller should free this pointer

26
sql/spatial.cc
View File

@ -2075,19 +2075,22 @@ bool Gis_geometry_collection::init_from_wkt(Gis_read_stream *trs, String *wkb)
return 1;
wkb->length(wkb->length()+4); // Reserve space for points
for (;;)
if (trs->next_symbol() != ')')
{
if (!(g= create_from_wkt(&buffer, trs, wkb)))
return 1;
if (g->get_class_info()->m_type_id == wkb_geometrycollection)
for (;;)
{
trs->set_error_msg("Unexpected GEOMETRYCOLLECTION");
return 1;
if (!(g= create_from_wkt(&buffer, trs, wkb)))
return 1;
if (g->get_class_info()->m_type_id == wkb_geometrycollection)
{
trs->set_error_msg("Unexpected GEOMETRYCOLLECTION");
return 1;
}
n_objects++;
if (trs->skip_char(',')) // Didn't find ','
break;
}
n_objects++;
if (trs->skip_char(',')) // Didn't find ','
break;
}
wkb->write_at_position(no_pos, n_objects);
@ -2208,10 +2211,9 @@ bool Gis_geometry_collection::get_data_as_wkt(String *txt,
geom->set_data_ptr(data, (uint) (m_data_end - data));
if (geom->as_wkt(txt, &data))
return 1;
if (txt->append(STRING_WITH_LEN(","), 512))
if (n_objects && txt->append(STRING_WITH_LEN(","), 512))
return 1;
}
txt->length(txt->length() - 1);
*end= data;
return 0;
}

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