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[jsr363-experts] Re: Definition of terms
- From: Martin Desruisseaux <
>
- To:
- Subject: [jsr363-experts] Re: Definition of terms
- Date: Sun, 14 Dec 2014 21:26:22 +0900
- Organization: Geomatys
Le 14/12/14 21:21, Werner Keil a écrit :
>
Even JSR-275 had ProductUnit, TransformedUnit or AlternateUnit. There
>
was no explicit "DerivedUnit" type on top, so 363 did not remove
>
anything, it just added a few more variations. The class was removed
>
between JSR 108 and 275, guess some initial spec relics are as old as
>
that...
I'm not talking about a "BaseUnit" class or a "DerivedUnit" class, but
about the "base unit" and "derived unit" concepts as defined by the
Bureau International des Poids et Mesures (BIPM), which defines the SI
system. Whether those concepts are represented by distinct classes or
not is an implementation details. But the spec mentions base and derived
units, so those concepts need to be defined.
Martin