Re: [threeten-develop] Clock and TimeSource

[Peakall,Dale <Dal...@oc...>]

Would the new Clock still be relative to a TimeZone?  I assume if all it
is doing is providing an Instant - not, but I want to be sure.

-----Original Message-----
From: Richard Warburton [mailto:ric...@gm...] 
Sent: 02 February 2012 01:32
To: thr...@li...
Subject: Re: [threeten-develop] Clock and TimeSource

> At the JSR-310 meeting with Oracle, one topic discussed was Clock and
> TimeSource.
>
> The thinking is to separate these as follows:
>
> Clock would include the functionality of providing the underlying
> Instant, currently achieved by TimeSource.
>
> Clock would lose most of its methods, as the now() methods on the main
> set of classes perform the same role.

This does make sense. I assume you're referring to factory methods for
other types, such as 'yearMonth()' on Clock - I don't really see what
value they add.

Would this change involve removing the notion of what the current API
terms an 'OffsetSystemTimeSource' or is that being kept as a subclass
of the new Clock?

> TimeSource (possibly renamed) would be a provider of a "possibly more
> accurate" clock, providing TAI or UTC if available from the underlying
> operating system.
>
> TAIInstant, UTCInstant and TimeSource would be placed into a secondary
> module, rather than the very core module of the JDK.

I think having them in a secondary module makes sense.

On a related note, is there any possibility of having a Time Stamp
Counter based TimeSource in the secondary module?  I can certainly see
its usefulness in certain situations, although its by no means enough
to warrant inclusion into the core API.

regards,

  Richard

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