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(parent: 199f597) | patch

Add BRIN infrastructure for "inclusion" opclasses

Add BRIN infrastructure for "inclusion" opclasses

This lets BRIN be used with R-Tree-like indexing strategies.

Also provided are operator classes for range types, box and inet/cidr.
The infrastructure provided here should be sufficient to create operator
classes for similar datatypes; for instance, opclasses for PostGIS
geometries should be doable, though we didn't try to implement one.

(A box/point opclass was also submitted, but we ripped it out before
commit because the handling of floating point comparisons in existing
code is inconsistent and would generate corrupt indexes.)

Author: Emre Hasegeli. Cosmetic changes by me
Review: Andreas Karlsson

18 files changed:

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