Re: ICU integration

On Tue, Dec 27, 2016 at 6:50 PM, Peter Eisentraut
<peter(dot)eisentraut(at)2ndquadrant(dot)com> wrote:
> Updated patch attached.

Some more things I noticed following another quick read over the patch:

* I think it's worth looking into ucol_nextSortKeyPart(), and using
that as an alternative to ucol_getSortKey(). It doesn't seem any
harder, and when I tested it it was clearly faster. (I think that
ucol_nextSortKeyPart() is more or less intended to be used for
abbreviated keys.)

* I think that it's not okay that convert_string_datum() still uses
strxfrm() without considering if it's an ICU build. That's why I
raised the idea of a pg_strxfrm() wrapper at one point.

* Similarly, I think that check_strxfrm_bug() should have something
about ICU. It's looking for a particular bug in some very old version
of Solaris 8. At a minimum, check_strxfrm_bug() should now not run at
all (a broken OS strxfrm() shouldn't be a problem with ICU).
Otherwise, it could do some kind of testing on our pg_strxfrm()
wrapper (or similar).

--
Peter Geoghegan