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Collator (1.8.0_77)

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  Collator (1.8.0_77) v.borchert@web.de (Volker Borchert) - 2016-04-07 17:26 +0000
    Re: Collator (1.8.0_77) v_borchert@despammed.com (Volker Borchert) - 2016-04-08 00:46 +0000

#34079 — Collator (1.8.0_77)

From reading the javadoc on the Collator strength values, I came to
the conclusion that it should be possible to have a Collator that
sorts "B" before "a" using TERTIARY. But - no. Strength apparently
applies only to comparisons of "a" with "A", other than the javadoc
on PRIMARY lured me into assuming.

The use case: a somewhat generic OR-mapped table widget offering an
API hook to sort by columns. Currently I'm using String's compareTo()
and compareToIgnoreCase() to offer change case sensitivity without
changing behaviour otherwise. Now I'd like to switch to Collator
beause I want umlauts and ß handled properly, and am looking
for a way to avoid expensively toLower()ing before each comparison,
or less expensively but more footprintingly generating some sort of
sort keys.

Ideas anyone?

	vb

-- 

"I'm a doctor, not a mechanic." Dr Leonard McCoy <mccoy@ncc1701.starfleet.fed>
"I'm a mechanic, not a doctor." Volker Borchert  <v_borchert@despammed.com>

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#34086

Volker Borchert wrote:

> From reading the javadoc on the Collator strength values, I came to
> the conclusion that it should be possible to have a Collator that
> sorts "B" before "a" using TERTIARY. But - no. Strength apparently
> applies only to comparisons of "a" with "A", other than the javadoc
> on PRIMARY lured me into assuming.
> 
> The use case: a somewhat generic OR-mapped table widget offering an
> API hook to sort by columns. Currently I'm using String's compareTo()
> and compareToIgnoreCase() to offer change case sensitivity without
> changing behaviour otherwise. Now I'd like to switch to Collator
> beause I want umlauts and ß handled properly, and am looking
> for a way to avoid expensively toLower()ing before each comparison,
> or less expensively but more footprintingly generating some sort of
> sort keys.
> 
> Ideas anyone?

Thinking it over, I come to the conclusion that my desire might be
somewhat self-contradictory - language specifics like umlauts and
pure technicals like (upper < lower) mixed up. So, it's probably
best to forget about it.

-- 

"I'm a doctor, not a mechanic." Dr Leonard McCoy <mccoy@ncc1701.starfleet.fed>
"I'm a mechanic, not a doctor." Volker Borchert  <v_borchert@despammed.com>

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