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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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36
doc/src/sgml/spgist.sgml
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@ -130,6 +130,42 @@
<literal>|&amp;&gt;</literal>
</entry>
</row>
<row>
<entry><literal>poly_ops</literal></entry>
<entry><type>polygon</type></entry>
<entry>
<literal>&lt;&lt;</literal>
<literal>&amp;&lt;</literal>
<literal>&amp;&amp;</literal>
<literal>&amp;&gt;</literal>
<literal>&gt;&gt;</literal>
<literal>~=</literal>
<literal>@&gt;</literal>
<literal>&lt;@</literal>
<literal>&amp;&lt;|</literal>
<literal>&lt;&lt;|</literal>
<literal>|&gt;&gt;</literal>
<literal>|&amp;&gt;</literal>
</entry>
</row>
<row>
<entry><literal>poly_ops</literal></entry>
<entry><type>polygon</type></entry>
<entry>
<literal>&lt;&lt;</literal>
<literal>&amp;&lt;</literal>
<literal>&amp;&amp;</literal>
<literal>&amp;&gt;</literal>
<literal>&gt;&gt;</literal>
<literal>~=</literal>
<literal>@&gt;</literal>
<literal>&lt;@</literal>
<literal>&amp;&lt;|</literal>
<literal>&lt;&lt;|</literal>
<literal>|&gt;&gt;</literal>
<literal>|&amp;&gt;</literal>
</entry>
</row>
<row>
<entry><literal>text_ops</literal></entry>
<entry><type>text</type></entry>