18 May
2012
18 May
'12
12:36 p.m.
As i said in original post and as per my understanding xwiki is using
groovy as scripting language where admin can write groovy scripts at run
time from UI which needs not not be compiled but Internally we are passing
this groovy script as string to server which is compiling it and executing
it at run time. In fact thats why it is called scripting language and
which seems to me the biggest advantage of groovy. Right?
---------- Forwarded message ----------
From: mohit gupta <motgupta(a)gmail.com>
Date: Fri, May 18, 2012 at 3:18 PM
Subject: Re: [xwiki-users] How end user can capitalize on groovy/velocity
fscript in xwiki?
To: XWiki Users <users(a)xwiki.org>
Thanks Caleb . Actually i am more interested in groovy usage in xwiki. If
you have any idea, can you comment on grrovy part of original post so that
i can use it in right sense.
On Fri, May 18, 2012 at 2:34 PM, Caleb James DeLisle <
calebdelisle(a)lavabit.com> wrote:
Hi,
I think of Velocity as a templating language.
You can write:
{{velocity}}
Your username is $xcontext.getUser(), welcome to the site.
{{/velocity}}
Combining code and text in a natural way.
You can even include XWiki markup in your velocity script since the output
from velocity will go to the rendering engine.
In groovy the same example would look like this:
{{groovy}}
println("Your username is " + xcontext.getUser() + " welcome to the
site.");
{{/groovy}}
Also possible but not as easy.
We usually use velocity for everything unless there is a compelling reason
for
groovy (there are some things such as the import keyword which are not
available in velocity)
Caleb
On 05/18/2012 04:31 AM, mohit gupta wrote:
Hi all,
i have seen xwiki can do lot of stuff with groovy and velocity.I am new
to
groovy so trying to understand how groovy and
velocty can benefit xwiki
and
ultimately end user. As most of the site says
groovy and java are almost
similar. so why xwiki is using groovy when it built upon java. As per my
understanding xwiki is using groovy as scripting language where admin can
write groovy scripts at run time from UI which needs not nto be compiled
but work like in the similar fashion to java. Internally we are passing
this grrovy script as string to server which is compilinh it and
executing
it at run time. Right?
Now second part is why velocity in xwiki? Velocity is used in similar
fashin to groovy in xwiki but difference is that any user without
programming rights also can write velocity scripts as it has access to
limited set of apis . Apart from that we can also write front end in
velocity script like if i write
{velocity}Hello:$xContext.getUser(){velocity} it will simply say
Hello:Scott on UI
but inside groovy scriplets everything will be taken as java code. Right?
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