Hi Will,
I was trying the following example (to create a custom class instance
dynamically in the template) given in the slides
## Let's do some mischief and instantiate an arbitrary class
#set ($fileclass = $obj.Class.forName("java.io.File"))
#set ($stringclass = $obj.Class.forName("java.lang.String"))
#set ($paramlist = [".."])
#set ($paramarray = $paramlist.toArray())
#set ($constructors = $fileclass.constructors)
## Call the constructor java.io.File(String)
#foreach ($c in $constructors)
#if ($c.toString() == "public java.io.File(java.lang.String)")
#set ($file = $c.newInstance($paramarray))
$file
#end
#end
where $obj is any object instance. I am neither getting the output nor its
giving any error in the velocity log. I am using default introspector, not
changed anything. Does the deault introspector allows to create
newinstance() etc from template?
Am i missing anything else otherwise?
Regards,
Ravi
On 12/7/04, Will Glass-Husain <[EMAIL PROTECTED]> wrote:
>
> Thanks for the pointer to my slides from ApacheCon ("Hacking Velocity").
>
> For the record there are slides and sample code available on these topics:
>
> --> VelocityViewServlet
> --> Custom directives
> --> Custom resource loaders
> --> Event handlers
> --> Custom introspector
> --> Modifying Velocity syntax with JavaCC
>
> I've put the material on the Wiki for more general availability. Hope this
> is useful to other users.
> http://wiki.apache.org/jakarta-velocity/HackingVelocity
>
> Best, WILL
>
> ----- Original Message -----
> From: "Shinobu Kawai" <[EMAIL PROTECTED]>
> To: "Velocity Users List" <velocity-user@jakarta.apache.org>
> Sent: Monday, December 06, 2004 2:12 PM
> Subject: Re: [FAQ] How do you check for null?
>
>
> > Hi Henning,
> >
> >> With the slides from Will's talk @ ApacheCon, you should be able to
> >> add a new statement to the VTL so you can do
> >>
> >> #ifnull($car.fuel)
> >
> > Hey, thanks for the idea! Approach #6 : use a custom directive. :)
> > I'll look into that.
> >
> > Best regards,
> > -- Shinobu Kawai
> >
> > --
> > Shinobu Kawai <[EMAIL PROTECTED]>
> >
