Re: Formatting a date

On Monday 27 March 2006 20:54, Endre St=F8lsvik wrote:
> On Mon, 27 Mar 2006, Alex Twisleton-Wykeham-Fiennes wrote:
> | On Mon 27 March 2006 11:28, Marc Palmer wrote:
> | > On 27 Mar 2006, at 11:13, Alex Twisleton-Wykeham-Fiennes wrote:
> | > > On Mon 27 March 2006 11:00, Marc Palmer wrote:
> | > >> On 27 Mar 2006, at 02:47, Sven Schliesing wrote:
> | > >>> That's exactly what I looked for.
> | > >>
> | > >> There's another, potentially cleaner way...
> | > >>
> | > >> ----------------- "mymacros.wmm":
> | > >>
> | > >> #macro formatDate($d)
> | > >>     $Text.formatDate($d, "dd.MM.yyyy, HH:mm")
> | > >> #end
> | > >>
> | > >> ----------------- "yourtemplate.wmt":
> | > >>
> | > >> #include as macro "mymacros.wmm"
> | > >>
> | > >> #formatDate($createdAt)
> | > >
> | > > Just to jump in for a moment - this will create a new
> | > > SimpleDateFormat object
> | > > every single time that it is invoked.  If you know that you are
> | > > going to be
> | > > formatting a lot of different dates with the same format then it is
> | > > considerably more efficient to drop in a dedicated wrapper around
> | > > an instance
> | > > of SimpleDateFormat that gives you the format that you want as
> | > > otherwise each
> | > > time that you invoke it, it will have to parse your "dd.MM.yyyy,
> | > > HH:mm"
> | > > format string, build the internal representation and then format
> | > > the Date
> | > > which is relatively expensive.
> | >
> | > You're absolutely right, but that can be dealt with using a macro
> | > plus a #bean to create a "static" shared instance of the formatter?
> |
> | I'll also look at making $Text.formatDate cache the SimpleTextFormat
> | objects that it creates and run some profiling to see whether or not th=
is
> | is really an advantage...
>
> And where should this cache reside? In which context? Who's gonna clean
> it? When? How? (And how do I reload my webapp in Tomcat?)
>
> Caches on every corner, under every rock, in every creek, and in other
> unknown places, is the way to evil code.
>
> Regards,
> Endre.

My gut feel would be to agree with Endre, but what do i know.=20

Getting back to the OP's requirement.=20
Why are you putting a raw date into the context?
Why does everyone think it would be neat to have model level code in the vi=
ew=20
layer?

We deal with dates in melati by formatting them before they hit the context=
,=20
by which I mean we have getters on our objects which return Strings, taking=
=20
into account locale.=20

I have every confidence that these plugable tools will not slow me or webma=
cro=20
down if I don't use them, but I cannot understand why anyone would use them=
=2E=20

cheers
Tim





=2D-=20
Registered linux user #21337, http://counter.li.org.


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