Re: Possible room for performance improvement when using TemplateDirectiveModel and TemplateMethodModelEx

Saturday, January 15, 2011, 11:40:41 AM, Daniel Henrique Alves Lima wrote:

>         Hi, Daniel.
>
>
> On Sat, 2011-01-15 at 10:52 +0100, Daniel Dekany wrote:
>> Saturday, January 15, 2011, 1:06:26 AM, Daniel Henrique Alves Lima wrote:
>> 
>
>> 
>> TemplateMethodModelEx pretty much corresponds to FTL functions, so
>> yes, it will. (Isn't that how you create them now?) (Note that you can
>> also have objects that implement both TemplateMethodModelEx and
>> TemplateDirectiveModel on the same time.)
>
>         I cannot remember why i haven't use the sample implementation for both.
> If the same class implement both interface, will FreeMarker execute
> TemplateDirectiveModel method for <@x.y> and TemplateMethodModelEx
> method for ${x.y}? Maybe i wasn't aware of this before... :-/

Yes, except that last had to be x.y() of course.

>> (But, of course, if any of these Grails-specific objects are bound to
>> a HTTP Request or HTTP Session, then you can't just create them on the
>> application level.)
>
>         That's why i will try to provide this (shared variables exposure) as an
> option.

You can also put the "g" hash into the data-model in that case (which
makes sense as constructing that hash in Java is certainly faster than
doing the same in FTL, which BTW also includes an #import). If some
member of "g" should be application scope, and some should be request
scope, then you can fall-back to an application scope hash for the
application scope ones.

>> You will lose it. However here the thing that overrides "g" and the
>> affected part of the source code that wants to use "g" are in the same
>> file, which is much less worrisome than if something that comes from
>> outside hides "g".
>
>         Ok.
>
>         Thanks.
>
>
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-- 
Best regards,
 Daniel Dekany


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