[Jetty-support] Re: Almost there , total Code mobility using network classloader.

[Greg W. <gr...@mo...>]

Sorry for the slow response - but you worked out the issue I think.

As Jasper uses ant to compile JSPs, it should be able to use any compiler
supported by ant itself.  Thus I recommend looking at the ant documentation etc.

cheers


Ludde wrote:
> Found out that suns "javac" rely on .class files from classpath and can 
> not use a classloader.
> 
> Does any one know a "javac" compiler that can use a classloader as well 
> as the normal classpath ? 
> 
> I'm currently trying "janino" for compiling JSP's with JETTY  , 
> http://www.janino.net/javadoc/index.html , it has been said that it 
> works with Jasper.
> 
> I've also heard of other "javacs" like Kopi/pizza that I will 
> investigate to see if they use a classloader.
> 
> /Rickard
> 
> 
>>Hello all.
>>
>>My Question???
>>Is it possible to instruct the ANT JSP -compilation part in Jetty 
>>to use my custom classloader ? Since it is possible to instruct 
>>Jetty to use a customclass loader.
>>
>>My Problem:
>>Problems with the last stage of JSP handling. Jetty is able to 
>>generate the servlets from the jsp , but then , when it comes to 
>>compilation of these it fails , becuse ANT seems to NOT use the 
>>same classloader as Jetty is set to use (In my case a network 
>>classloader)
>>
>>My project/Idea:
>>I'm using a network classloader for sending objects between jvm's 
>>without having the class files on the target machine.
>> ,using this trick I dont have to put .jar files on the machine 
>>that needs to de-serialize the recieved object.
>>
>>I've managed to send objects containg internal references to Jetty 
>>classes to a machine that don't have any jetty.jar/javaxservlet.jar 
>>in the filesystem. Jetty starts up fine , using this network 
>>classloader.
>>
>>I'm starting the war archive in this "network" transfered Jetty and 
>>it works fine, I'm even able to set jetty to use my network 
>>classloader within the WAR archive , that is , a servlet inside the 
>>war file that needs classes will load it using my network loader.
>>This how I instructed jetty to do so...
>>
>>-------------------------------------------------
>>Server server=new Server("mywar.war");        
>>HttpContext[] c=server.getContexts();
>>c[0].setClassLoaderJava2Compliant(true);
>>c[0].setParentClassLoader(NetClassLoader());
>>server.start();
>>--------------------------------------------------
>>
>>Jetty is also able to generate the servlets from the .jsp's inside 
>>the war archive , THIS IS GREAT !! 
>>
>>but it fails to compile these "machine" generated servlets, (ok the 
>>reason is that I dont the javaxservlet.jar inte my classpath,,,but 
>>the reason for this is that I want ALL my CLASSSES to be loaded 
>>trough my network classloader)
>>
>>here is the error messge anyway:
>>22:33:43.456 EVENT  Error compiling file: 
>>/tmp/Jetty__8888__demoapp/index_jsp.java     [javac] Compiling 1 
>>source file
>>    [javac] /tmp/Jetty__8888__demoapp/index_jsp.java:3: package 
>>javax.servlet does not exist
>>    [javac] import javax.servlet.*;
>>
>>
>>
>>/Regards Rickard Lundin
>>/ps
>>I intend to use Jetty in my small experimental Code mobility 
>>project http://aortas.sourceforge.net
>>
>>
>>
>>
>>
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