| type not supported by task? | type not supported by task? 2005-06-09 - By Eric Tchepannou
Thanks for this Peter.
I had started in another thread a theory to explain myself this error.
But this is definitely sth. I will have to try out.
Eric
On 6/9/05, Peter Reilly <peterreilly@(protected)> wrote:
> I meant to reply yesterday - but my battery ran out.
> You need to use the attribute "loaderref" so that the
> same classloader is used for both the typedef and the
> taskdef. Otherwise, different classloaders will be used,
> and so the the classes will not be compatible.
>
> Example:
> --------------------- build.xml ---------------
> <project>
> <target name="compile">
> <mkdir dir="classes"/>
> <javac srcdir="src" destdir="classes"/>
> </target>
>
> <target name="works" depends="compile">
> <taskdef name="task" classname="my.Task"
> classpath="classes" loaderref="my.loaderref"/>
> <typedef name="type" classname="my.Type"
> loaderref="my.loaderref"/>
> <task>
> <type/>
> </task>
> </target>
>
> <target name="fails" depends="compile">
> <taskdef name="task" classname="my.Task"
> classpath="classes" />
> <typedef name="type" classname="my.Type"
> classpath="classes"/>
> <task>
> <type/>
> </task>
> </target>
>
> </project>
>
> -------------- Task.java ------------------
>
> package my;
>
> public class Task extends org.apache.tools.ant.Task {
> public void add(Type p) {
> }
> }
>
> --------------- Type.java --------------------
>
> package my;
>
> public class Type {
> }
>
> Peter
>
> Eric Tchepannou wrote:
>
> >I have checked http://www.oracle.com/technology/pub/articles/bodewig
_taskwriters.html
> >I think I should rather use addMyBaseType(MyBaseType t) instead of
> >addConfigured(...) ?
> >Could it be that this new syntax is now only valid with Ant 1.6 + ?
> >
> >On 6/9/05, Eric Tchepannou <mellists@(protected)> wrote:
> >
> >
> >>Thanks for that Matt.
> >>I have checked my code again and managed to have it working with the
> >>createXXX() Method. The addConfigured(..) still fails... :(
> >>
> >>On 6/8/05, Matt Benson <gudnabrsam@(protected)> wrote:
> >>
> >>
> >>>Eric:
> >>> Without consulting the code (much)... if you want
> >>>your custom task to recognize any of
> >>>
> >>><mytask>
> >>> <mytypea />
> >>></mytask>
> >>>
> >>><mytask>
> >>> <mytypeb />
> >>></mytask>
> >>>
> >>><mytask>
> >>> <mytypec />
> >>></mytask>
> >>>
> >>>where mytypea|b|c all have one base class, you will
> >>>want to make each type available with a typedef and
> >>>then the code you have--addConfigured(BaseTypeClass
> >>>o)--should work. Beyond that I do wonder why you need
> >>>to cast your subtypes... OO would dictate that you
> >>>call a designated method and they would simply behave
> >>>accordingly, but whatever floats your boat I suppose.
> >>>
> >>>HTH,
> >>>Matt
> >>>
> >>>--- Eric Tchepannou <mellists@(protected)> wrote:
> >>>
> >>>
> >>>
> >>>>Hello,
> >>>>
> >>>>I am developing an ant task extension but face
> >>>>problems to have it
> >>>>running from the buildfile. I get an error stating
> >>>>that a certain
> >>>>custom type of mine is not supported by my task.
> >>>>
> >>>>I think I know where the problem might come from:
> >>>>I have implemented multiple types that I have
> >>>>defined as extension of
> >>>>a base abstract class (that implements an interface)
> >>>>and in my Task
> >>>>extension I have defined an
> >>>>addConfigured(BaseTypeClass o) and do the
> >>>>casting in the method implementation.
> >>>>Could this be the source of the problem?
> >>>>Should I rather for each type subclass implement a
> >>>>addConfigured(TypeSubclass o)?
> >>>>
> >>>>...or do you think the the problem somewhere else?
> >>>>
> >>>>My next step will be to test this, but as this might
> >>>>be a time
> >>>>consuming typing job, I thought I could count on
> >>>>your previous
> >>>>experiences.
> >>>>
> >>>>Many thanks for your contributions.
> >>>>
> >>>>--
> >>>>Best Regards,
> >>>>Eric Tchepannou
> >>>>
> >>>>
> >>>>
> >>>>
> >>>---------------------------------------------------------------------
> >>>
> >>>
> >>>>To unsubscribe, e-mail:
> >>>>user-unsubscribe@(protected)
> >>>>For additional commands, e-mail:
> >>>>user-help@(protected)
> >>>>
> >>>>
> >>>>
> >>>>
> >>>
> >>>
> >>>__________________________________
> >>>Discover Yahoo!
> >>>Use Yahoo! to plan a weekend, have fun online and more. Check it out!
> >>>http://discover.yahoo.com/
> >>>
> >>>
> >>>
> >>--
> >>Best Regards,
> >>Eric Tchepannou
> >>
> >>
> >>
> >
> >
> >
> >
>
>
> ---------------------------------------------------------------------
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>
>
--
Best Regards,
Eric Tchepannou
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