Re: [Exist-open] higher-order functions

[trubliphone <tru...@go...>]

What I do is I store the function name in a configuration file that is read
at runtime.  The actual code looks like this:

for $facet in $config/descendant::*[name()="facet"]
  (: $config is a configuration file :)
  (: the fn used by each facet is defined there :)
  let $fnURI  := "http://www.my.namespace"
  let $fnName := $facet/@fn
  let $fn :=
util:eval(concat("util:function(QName('",$fnURI,"','",$fnName,"'),2)"))
  return
  <result>{someOtherFn($fn,$facet/arg)}</result>

Does that count as dynamic?

On Wed, Jul 14, 2010 at 7:54 AM, Evgeny Gazdovsky <gaz...@gm...>wrote:

> 2010/7/14 trubliphone <tru...@go...>:
> > Actually, I think I've managed to do this (in an ugly, hacky way):
> >
> > let $fnName := "foo:Fn1"
> > let $fn :=
> > util:eval(concat("util:function(QName('www.foo.bar','",$fnName,"'),1)"))
> > util:call($fn,((1,2,3)))
> >
>  Yes, you can do it, but just the name of called function is statikaly
> known.
> You can't use this for dinamical names, like
>
> let $fnName := request:get-parameter("func-name", "default:func") (:
> or another method to get the name of function during runtime:)
> let $fn :=
> util:eval(concat("util:function(QName('www.foo.bar','",$fnName,"'),1)"))
> util:call($fn,((1,2,3)))
>