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Some data types under adt/ have separate header files, but most simple
ones do not, and their public functions are defined in builtins.h. As
the patches improving geometric types will require making additional
functions public, this seems like a good opportunity to create a header
for floats types.
Commit 1acf757255 made _cmp functions public to solve NaN issues locally
for GiST indexes. This patch reworks it in favour of a more widely
applicable API. The API uses inline functions, as they are easier to
use compared to macros, and avoid double-evaluation hazards.
Author: Emre Hasegeli
Reviewed-by: Kyotaro Horiguchi
Discussion: https://www.postgresql.org/message-id/CAE2gYzxF7-5djV6-cEvqQu-fNsnt%3DEqbOURx7ZDg%2BVv6ZMTWbg%40mail.gmail.com
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The primary goal of this patch is to eliminate duplicate code and share
code between different geometric data types more often, to prepare the
ground for additional patches. Until now the code reuse was limited,
probably because the simpler types (line and point) were implemented
after the more complex ones.
The changes are quite extensive and can be summarised as:
* Eliminate SQL-level function calls.
* Re-use more functions to implement others.
* Unify internal function names and signatures.
* Remove private functions from geo_decls.h.
* Replace should-not-happen checks with assertions.
* Add comments describe for various functions.
* Remove some unreachable code.
* Define delimiter symbols of line datatype like the other ones.
* Remove the GEODEBUG macro and printf() calls.
* Unify code style of a few oddly formatted lines.
While the goal was to cause minimal user-visible changes, it was not
possible to keep the original behavior in all cases - for example when
handling NaN values, or when reusing code makes the functions return
consistent results.
Author: Emre Hasegeli
Reviewed-by: Kyotaro Horiguchi, me
Discussion: https://www.postgresql.org/message-id/CAE2gYzxF7-5djV6-cEvqQu-fNsnt%3DEqbOURx7ZDg%2BVv6ZMTWbg%40mail.gmail.com
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Discussion: https://postgr.es/m/15719.1523984266@sss.pgh.pa.us
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Backpatch-through: certain files through 9.3
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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
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of SP-GiST.
Bug exists since initial commit of box opclass for SP-GiST,
so backpath to 9.6
Author: Nikita Glukhov with minor editorization of tests by me
Reviewed-by: Kyotaro Horiguchi, Anastasia Lubennikova
https://commitfest.postgresql.org/13/981/
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Mostly these are just comments but there are a few in documentation
and a handful in code and tests. Hopefully this doesn't cause too much
unnecessary pain for backpatching. I relented from some of the most
common like "thru" for that reason. The rest don't seem numerous
enough to cause problems.
Thanks to Kevin Lyda's tool https://pypi.python.org/pypi/misspellings
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Was part of box type in SP-GiST index patch.
Reported-by: Emre Hasegeli
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My compiler doesn't like the lack of initialization of "flag", and
I think it's right: if there were zero keys we'd have an undefined
result. The AND of zero items is TRUE, so initialize to TRUE.
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Patch implements quad-tree over boxes, naive approach of 2D quad tree will not
work for any non-point objects because splitting space on node is not
efficient. The idea of pathc is treating 2D boxes as 4D points, so,
object will not overlap (in 4D space).
The performance tests reveal that this technique especially beneficial
with too much overlapping objects, so called "spaghetti data".
Author: Alexander Lebedev with editorization by Emre Hasegeli and me
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