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From Jeremy Boynes <jboy...@gluecode.com>
Subject Re: GBeans, Kernel and JMX Exceptions
Date Wed, 24 Nov 2004 18:51:25 GMT
Sounds reasonable - I can roll this into the ObjectName changes.

--
Jeremy


Dain Sundstrom wrote:
> One of the last areas of tight coupling to JMX in the Geronimo kernel 
> and the GBean architecture is the use of JMX Exceptions.  These the 
> exceptions are normally not declared as part of the interface, but are 
> thrown from the methods that declare "throws Exception".  I propose that 
> we catch all JMX exceptions and convert them to the following Geronimo 
> specific exceptions:
> 
> KernelException - Base class for the following exceptions.  Direct 
> subclass of Exception.
> 
> GBeanNotFoundException - Thrown from getAttribute, setAttribute, invoke, 
> getGBeanInfo, getClassLoaderFor, startGBean, startRecursiveGBean, 
> stopGBean, and unloadGBean.  This replaces 
> javax.management.InstanceNotFoundException.
> 
> GBeanAlreadyExistsException - Thrown from loadGBean.  This replaces 
> javax.management.InstanceAlreadyExistsException.
> 
> InvalidGBeanException - Thrown from loadGBean.  This is used instead of 
> javax.management.NotCompliantMBeanException.
> 
> NoSuchAttributeException - Thrown from getAttribute and setAttribute.  
> This replaces javax.management.AttributeNotFoundException
> 
> NoSuchOperationException - Thrown from invoke.  There is no equivalent 
> exception in JMX.
> 
> InternalKernelException - Extend runtime exception. Thrown from all 
> methods on kernel.  This exception will contain any java.lang.Exception 
> (and for the improbable case of direct subclass of java.lang.Throwable) 
> thrown from the kernel or gbean architecture itself.  This allows 
> callers to differentiate between kernel problems and exceptions from the 
> GBean instance implementation.
> 
> -dain
> 
> -- 
> Dain Sundstrom
> Chief Architect
> Gluecode Software
> 310.536.8355, ext. 26


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