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Add polygon opclass for SP-GiST

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Polygon opclass uses compress method feature of SP-GiST added earlier. For now
it's a single operator class which uses this feature. SP-GiST actually indexes
a bounding boxes of input polygons, so part of supported operations are lossy.
Opclass uses most methods of corresponding opclass over boxes of SP-GiST and
treats bounding boxes as point in 4D-space.

Bump catalog version.

Authors: Nikita Glukhov, Alexander Korotkov with minor editorization by me
Reviewed-By: all authors + Darafei Praliaskouski
Discussion: https://www.postgresql.org/message-id/flat/54907069.1030506@sigaev.ru
This commit is contained in:
Teodor Sigaev
2017-12-25 18:59:38 +03:00
parent 4e2970f880
commit ff963b393c
13 changed files with 491 additions and 8 deletions
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3
src/backend/utils/adt/geo_ops.c
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@@ -41,7 +41,6 @@ enum path_delim
static int point_inside(Point *p, int npts, Point *plist);
static int lseg_crossing(double x, double y, double px, double py);
static BOX *box_construct(double x1, double x2, double y1, double y2);
static BOX *box_copy(BOX *box);
static BOX *box_fill(BOX *result, double x1, double x2, double y1, double y2);
static bool box_ov(BOX *box1, BOX *box2);
static double box_ht(BOX *box);
@@ -482,7 +481,7 @@ box_fill(BOX *result, double x1, double x2, double y1, double y2)
/* box_copy - copy a box
*/
static BOX *
BOX *
box_copy(BOX *box)
{
BOX *result = (BOX *) palloc(sizeof(BOX));