Handmade XSPs?

[Phil Shafer <ph...@juniper.net>]

The performance page suggests hand building XSPs:

  Consider turning your XSPs into Generators by hand and call them
  directly. Of course you don't need to do this for all pages, but
  it's recommended to it for those which are heavy loaded.
  
  You can try it this way:
  
  Cocoon will compile your XSP's into Java classes (see
  tomcat/work/..../org/apache/cocoon/www/my_xsp.class). After that,
  add the generated Generator to the Sitemap:

  <map:generator type="myXSP" src="org.apache.cocoon.www.my_xsp"/>
  
  And use it:
  <map:generate type="myXSP"/>

Is the xsp dependency checking so expensive that this
it worth the maintenance cost is incurs? Is there more
going on that just stat()ing the xsp file and the logicsheet
it references? Is there a build-time option to precompile
XSPs without doing it by hand?

Thanks,
 Phil

---------------------------------------------------------------------
To unsubscribe, e-mail: users-unsubscribe@cocoon.apache.org
For additional commands, e-mail: users-help@cocoon.apache.org

Re: Handmade XSPs?

[Geoff Howard <co...@leverageweb.com>]

Phil Shafer wrote:
> The performance page suggests hand building XSPs:
> 
>   Consider turning your XSPs into Generators by hand and call them
>   directly. Of course you don't need to do this for all pages, but
>   it's recommended to it for those which are heavy loaded.
>   
>   You can try it this way:
>   
>   Cocoon will compile your XSP's into Java classes (see
>   tomcat/work/..../org/apache/cocoon/www/my_xsp.class). After that,
>   add the generated Generator to the Sitemap:
> 
>   <map:generator type="myXSP" src="org.apache.cocoon.www.my_xsp"/>
>   
>   And use it:
>   <map:generate type="myXSP"/>
> 
> Is the xsp dependency checking so expensive that this
> it worth the maintenance cost is incurs? 

I'm not aware of anyone having benchmarked it.  My gut feeling is that I 
could shave some unnecessary objects and less than optimal code off the 
auto-generated version by either starting from scratch or working with 
the generated java and hacking away.  How much that would get is 
anyone's bet.  When I was developing for a high traffic site I felt 
better creating the Generator myself, but since when working on 
lower-traffic code I've been happy with XSP.

> Is there more
> going on that just stat()ing the xsp file and the logicsheet
> it references? 

You'd have to confirm this independently, but I think it's doing a 
delayed refresh check on getLastModified() of the file and its 
dependencies.  Shouldn't be too bad.

> Is there a build-time option to precompile
> XSPs without doing it by hand?

Yes I think but you'll need to dig it out yourself.

Hope that helps,

Geoff


---------------------------------------------------------------------
To unsubscribe, e-mail: users-unsubscribe@cocoon.apache.org
For additional commands, e-mail: users-help@cocoon.apache.org