Static java classes

[Sebastian Gumpold <se...@sbs.co.at>]

Hi all!

Is it possible to use static classes in a Velocity template?

When using
context.put("bla", instanceOfBla);
a concrete instance of a class is needed, so this of course doesn't work 
for a static class.

Thanks a lot,
Sebastian

Re: Static java classes

[Nathan Bubna <nb...@gmail.com>]

On 5/7/07, Sebastian Gumpold <se...@sbs.co.at> wrote:
> Hi all!
>
> Is it possible to use static classes in a Velocity template?

not without some really ugly, in-template reflection hacks.

> When using
> context.put("bla", instanceOfBla);
> a concrete instance of a class is needed, so this of course doesn't work
> for a static class.

yeah, an instance is needed for normal usage.  adding support for
static utility classes has been discussed for a long time.
unfortunately, we didn't get it done for 1.5, but it is high on my
list of things-i'd-like-to-make-time-for so that we get it into 1.6.
if you're interested in helping, here's the discussion:

http://issues.apache.org/jira/browse/VELOCITY-102

> Thanks a lot,
> Sebastian

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Re: Static java classes

[mailmur <ma...@yahoo.com>]

Once I had to publish ErrorCodes "constants" to
templates (ErrorCodes.INVALID_KEY etc...). Use
FieldMethodizer wrapper to publish constant fields.

ctx.put("ErrorCodes", new
FieldMethodizer(ErrorCodes));

And if you need access to static methods then can
always add a default constructor that does nothing.

ctx.put("Utils", new Utils());

If you dont want to add constructor to a pure static
class, FieldMethodizer may work for static methods as
well. I never tried it.

--- Sebastian Gumpold <se...@sbs.co.at>
wrote:

> Hi all!
> 
> Is it possible to use static classes in a Velocity
> template?
> 
> When using
> context.put("bla", instanceOfBla);
> a concrete instance of a class is needed, so this of
> course doesn't work 
> for a static class.
> 
> Thanks a lot,
> Sebastian

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