Nothing special in Tapestry ... most likely it's a classloader conflict
between AspectJ and Tomcat. Tomcat must not be loading the bytecode enhanced
version of TapestryFilter, instead loading the standard version.
On Thu, Sep 3, 2009 at 10:51 AM, Neo Anderson
<javadeveloper...@yahoo.co.uk>wrote:
>
> I try a simall test using aspectj to capture the doFilter() execution of
> TapestryFilter.java. The pointcut intends to caputre the doFilter method
> and
> prints out some information in the e.g. catalina.out log file. The code
> looks as below:
>
> public aspect Test{
> pointcut intercept(): execution(*
> org.apache.tapestry5.services.TapestryFilter.doFilter(..));
>
> void around() : intercept(){
> System.out.println(" ...... test info ");
> logger.debug(" ..... test info using slf4j"); // configure log
> properties already.
> proceed();
> }
> }
>
> If I copy TapestryFilter.java to my own folder e.g. myproject/pkg/web/ and
> rename it to e.g. MyTapestryFilter.java. When accessing from the brwoswer
> http://localhost:8080/myproject. The log will show the debug information
> printed in the catalina.out log file. However, if the web.xml filter class
> switch back using TapestryFilter.java, then nothing happens.
>
> I am just curious if Tapestry5 add any contract that prevents bytecode
> level
> weaving? Or is there any source code as entry point I can start to have a
> look (TapestryFilter.java looks like a normal Filter calss)?
>
> I appreciate any help.
>
> Thank you.
>
>
>
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Creator of Apache Tapestry
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