Hello,
I am new to this list, this is my first posting and first of all, I want to
say 'thank's' to the avalon developer community. It think its a very nice
pice of software and I enjoyed it very much to learn about it.
And now my question: I have tried to use the
org.apache.avalon.framework.component.DataSourceComponent in a little
Application build on fortress. I did some mistakes in the Configuration
Files (roles) - it was not valid XML. At Application startup i got the
following Error:
[java] org.apache.avalon.fortress.InitializationException: Cannot set
up Container. Startup lifecycle failure
[java] at
org.apache.avalon.fortress.impl.DefaultContainerManager.createContainer(Defa
ultContainerManager.java:230)
[java] at
org.apache.avalon.fortress.impl.DefaultContainerManager.initializeContainer(
DefaultContainerManager.java:167)
[java] at
org.apache.avalon.fortress.impl.DefaultContainerManager.initialize(DefaultCo
ntainerManager.java:160)
[java] at
org.apache.avalon.framework.container.ContainerUtil.initialize(ContainerUtil
.java:282)
[java] at
net.kintrup.learning.avalon.simple.Main.main(Main.java:31)
The general Startup lifecycle failure message did *not* lead me to the real
error - an incorrect Configuration in the roles file. I took a look at the
source code (the DefaultContainerManager in this case) and found out, that
avalon uses a kind of nested Exceptions. Is this true? If yes, how do I get
the "real root cause" of the Error message? I tried something like
(Main.java - nearly the same as in the example)
try {
String res = "resource://my/ressources";
final FortressConfig config = new FortressConfig();
config.setContainerConfiguration( res + "/SimpleContainer.xconf");
config.setRoleManagerConfiguration( res + "/SimpleContainer.roles");
config.setLoggerManagerConfiguration( res + "/SimpleContainer.xlog" );
ContainerManager cm = new DefaultContainerManager( config.getContext() );
ContainerUtil.initialize( cm );
DefaultContainer container = (DefaultContainer)cm.getContainer();
SimpleComponent simple =
(SimpleComponent)container.getServiceManager().lookup(
SimpleComponent.ROLE );
System.out.println( "SimpleComponent says: " + simple.getName() );
container.getServiceManager().release( simple );
ContainerUtil.dispose( cm );
} catch( Exception e) {
e.printStackTrace();
while( e.getCause() != null ) {
if( e instanceof Exception ) {
e = (Exception)e.getCause();
}
e.printStackTrace();
}
}
This did not work. Do I overlook something in Error Handling?
Thank you very much for your help,
Jens
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