This has been discussed in the past Robert, i.e. can one assume a task that a task is safe to re-execute more than once with slightly different parameters. I don't recall the answer, but I do recall than at least one task was made safer to re-execution.
In your case, the safest might be to get at the UnknownElement of your nested Javac task, and re-instanciate a fresh instance every time, from the same "XML config". I don't even know if it's possible (I think it should be, but YMMV), but it might be the only safe way to reuse a task, or more specifically a task's configuration. --DD > -----Original Message----- > From: Robert Virkus [mailto:[EMAIL PROTECTED] > Sent: Friday, February 25, 2005 12:25 PM > To: Ant Developers List > Subject: Re: Duplicate Class Error when Re-using Javac Task > > Hi Martin, > > sorry, I forgot to mention that - fork does not help neither. > > Thanks, > Robert > > On Friday 25 February 2005 18:51, Martin Gainty wrote: > > Robert > > Did you enable the javac task fork="true" > > Viel Gluck, > > Martin- > > ----- Original Message ----- > > From: "Robert Virkus" <[EMAIL PROTECTED]> > > To: "Ant Developers List" <[EMAIL PROTECTED]> > > Sent: Friday, February 25, 2005 11:13 AM > > Subject: Duplicate Class Error when Re-using Javac Task > > > > > Hi everyone, > > > > > > I'd like to re-use a Javac-task from within my own task but I always > get > > > "duplicate class: ClassName"-errors when I compile the second set of > > > source > > > code files. > > > > > > The background of this is that I have a preprocessor that creates > > > different > > > source code versions of the same project, which are then compiled by > the > > > org.apache.tools.ant.taskdefs.Javac task. I use and set different > > > directories > > > for the source code and for the compiled classes in each run. The > first > > > round > > > is compiled without any problems, but the following round fails with > the > > > "duplicate class" error. > > > > > > When I create a new instance of the Javac task, it works without > > > problems. > > > > > > I want to reuse the Javac task since I want to allow a nested > > > <javac>-definition in my task (in the build.xml). (The project is J2ME > > > Polish > > > by the way, www.j2mepolish.org). > > > > > > Is anyone aware what could be done in this case? I have seen that the > > > Javac > > > task resets its internal file list for each execute() call, but this > > > doesn't > > > seem to help. I could send a demonstrator project along with the > source > > > code > > > to anyone interested. > > > > > > Thanks in advance, > > > Robert > > > -- > > > Robert Virkus > > > Enough Software > > > Vor dem Steintor 218 > > > 28203 Bremen > > > Germany > > > > > > www.enough.de > > > +49-(0)421-9889131 > > > +49-(0)160-7788203 > > > [EMAIL PROTECTED] > > > > > > --------------------------------------------------------------------- > > > To unsubscribe, e-mail: [EMAIL PROTECTED] > > > For additional commands, e-mail: [EMAIL PROTECTED] > > > > --------------------------------------------------------------------- > > To unsubscribe, e-mail: [EMAIL PROTECTED] > > For additional commands, e-mail: [EMAIL PROTECTED] > > -- > Robert Virkus > Enough Software > Vor dem Steintor 218 > 28203 Bremen > Germany > > www.enough.de > +49-(0)421-9889131 > +49-(0)160-7788203 > [EMAIL PROTECTED] > > --------------------------------------------------------------------- > To unsubscribe, e-mail: [EMAIL PROTECTED] > For additional commands, e-mail: [EMAIL PROTECTED] --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
