[izpack-users] ClassCastException with custom listeners

[Bartz, Klaus]

Hi Steve,
the simplest way to create custom actions is to add your listener
to the ant script of IzPack (%IZ_HOME%\src\build.xml).
See target build.listeners.

There is a name convention for listener. Rename your listener to
CompileListener -> VelocityCompilerListener
VelocityListener -> VelocityInstallerListener
and may be the VelocityUninstallerListener

The CompilerListener should only exist at compile time, not at
install time. In the moment I do not know why it is active in your
installation.
Passive is clear because you add the classes to your install.jar (see
below).
CompilerListener.class is contained in the standalone compiler.

Do not add panel or custom action jars with <jar> in install.xml, else
put the jar files into the standalone compiler, or into the IzPack
installation
if you use the "normal" compiler. Both in the sub dir bin\customActions
(bin\panels for panels). If you use the <jar> element, you put the
contents of
the jar into the install.jar, not the jar file self into the compiler
(where
a compiler listener have to be).
May be it works also with the attribute "jar" of element "listener". I
never
used it because I never need it.

Try the packaging ("compile") with the "normal" compiler.

If you use build.xml, ervery listener will be packed in a jar file.
Be aware that you have to declare all needed classes in the ant call;
may be see the tag
<build-installer-listener name="RegistryInstallerListener">

Do not add so much jars into your install.xml. I think you need 
<jar src="lib/ant-1.6.5.jar"/>
<jar src="lib/ant-launcher-1.6.5.jar"/>
<jar src="lib/velocity-1.5.jar"/>

and not more.

Cheers 

Klaus

> -----Original Message-----
> From: izpack-users-bounces at lists.berlios.de 
> [mailto:izpack-users-bounces at lists.berlios.de] On Behalf Of 
> Steve Dodge
> Sent: Thursday, May 24, 2007 4:41 AM
> To: izpack-users at lists.berlios.de
> Subject: Re: [izpack-users] ClassCastException with custom listeners
> 
> 
> Hello,
> 
> I'm thinking that my explanation is too complicated.  Let me  
> simplify.  I've created a compiler listener and installer listener.   
> I've added those to my install.xml.  Since I'm using the standalone- 
> compiler, I set  the "jar" attribute.  The compiler listener runs as  
> expected, but when the installer is running, it gets a  
> ClassCastException because my compiler listener is 
> incorrectly placed  
> in the collection of InstallerListener objects.
> 
> Thanks,
> Steve
> 
> 
> 
> On May 21, 2007, at 10:40 AM, Steve Dodge wrote:
> 
> > I've built a compile listener and an installer listener.  Using
> > IzPack 3.10.1.   The compile listener added a filename to the of a
> > Velocity template to the additionalData map.  The Installer 
> listener 
> > checks during afterFile() if the name of the file matches a 
> Velocity 
> > template, and applies the template if so.  I am also using the 
> > standalone-compiler.jar. My install.xml has the following.
> >
> >    <listeners>
> >     <listener
> >        compiler="nm.trw.utils.listener.CompileListener"
> >        installer="nm.trw.utils.listener.VelocityListener"
> >        jar="lib/tekPackListeners.jar"
> >        />
> >
> >     <listener installer="AntActionInstallerListener"
> >                uninstaller="AntActionUninstallerListener"/>
> >     </listeners>
> >
> > Using debug output, I verify the compile listener is being called 
> > correctly during compile time as it searches for <addititionalData> 
> > tags within the <fileset> and parses the data correctly. During 
> > install, when the install panel is showing the progress 
> bar, I get the 
> > following exception:
> >
> > java.lang.ClassCastException: nm.trw.utils.listener.CompileListener
> >          at com.izforge.izpack.installer.Unpacker.getCustomActions
> > (Unpacker.java:1139)
> >          at com.izforge.izpack.installer.Unpacker.run(Unpacker.java:
> > 295)
> >          at java.lang.Thread.run(Thread.java:613)
> >
> > Looking at the code for Unpacker, it seems the CompileListener was 
> > improperly placed in the collection of InstallerListeners, thus 
> > ClassCastException.
> >
> > Here are the <jars> that I had to add to make it work.
> > <jar src="lib/tekPackListeners.jar"/>
> > <jar src="lib/izevent-3.10.1.jar"/>
> > <jar src="lib/compiler-3.10.1.jar"/><!-- this one has to be here, 
> > izevent isn't enough,  otherwise ClassNotFoundException for 
> > CompilerListener interface <jar src="lib/ant-1.6.5.jar"/>
> > <jar src="lib/ant-launcher-1.6.5.jar"/>
> > <jar src="lib/velocity-1.5.jar"/>
> >
> > I think I'm missing something in the installation here.
> >
> > Thanks,
> > Steve
> >
> >
> >
> >
> >
> >
> > Am I missing something in the setup here?  I cannot figure out how 
> > CompileListener makes it way into the
> >
> >
> >
> > _______________________________________________
> > izpack-users mailing list
> > izpack-users at lists.berlios.de 
> > https://lists.berlios.de/mailman/listinfo/izpack-users
> 
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