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From: Jamie.Echlin@ubsw.com
Date: Fri, 19 Oct 2001 10:56:04 +0100
Message-Id: <H000074404aa0b61.1003485362.ln4p578.ldn.swissbank.com@MHS>
Subject: depends for JSPs
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Hi,

I would like to compile only out of date JSP files, the problem is, 
unlike java sources, there doesn't seem to a method for determining 
what files depend on others, through include directives. However, I 
notice that the jsp compiler (we use JRun, not sure if it's specific to 
JRun) puts a line like the following in the .java files it generates.

      private static final String[] __dependencies__ = 
{"/iBox/ContributorsMenu.jsp","/jetweb/util/StandardHeader.jsp","/jetweb
/util/StandardFooter.jsp",null};

Therefore by traversing the entire output, it should be possible to 
create a "depends" type task that gets a graph of the dependencies 
between jsps, so it would know which files need to be recompiled, 
either by parsing the java source or by using BCEL or something to 
check the value of that field of the actual class file.

Has anyone done this yet before I try to do it myself, or any hints 
where to start first?

cheers, jamie


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