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From Dain Sundstrom <>
Subject Re: GBeanName [was: svn commit: r154723...]
Date Wed, 23 Feb 2005 23:30:48 GMT

On Feb 23, 2005, at 3:07 PM, Geir Magnusson Jr wrote:

> On Feb 23, 2005, at 11:46 AM, Dain Sundstrom wrote:
>> That of course means that someone would have to define their own 
>> types, and the latest changes by David Jencks make defining your own 
>> types the norm.  With his code you no longer declare an entire object 
>> name for a gbean.  Instead you just define an instance name and type 
>> (the type is actually extracted from the GBeanInfo).  So we are doing 
>> everything possible to encourage the use of the JSR77 name hierarchy, 
>> by making it the simplest and most natural configuration style.
> But we shouldn't require it for the container.  Great for J2EE, but 
> could be utterly useless for someone else.

I hope I did not give the impression that a name format is required; it 
is just encouraged.

I disagree with the statement that a name hierarchy is useless for 
anything but J2EE.  To the contrary, I believe that it is useful to 
everyone.  Without a well understood hierarchy, a user will be 
presented with thousands of components with no categorization, and this 
makes for a pretty unusable system.  After discussions with the James 
team, I am very confident that JSR77 naming rules will map well to 
their avalon based configs.  It should also map well to Pico and 
Spring.  The idea is to encourage use with a bit of sugar by making it 
the simplest and most powerful way to organize your components.

>> In the case where, they don't follow the JSR77 rules, the GBean 
>> specific console would have to fall back to a default sorting rule.  
>> This ugly display in the console would further encourage people to 
>> use JSR77 names.
> Or they would just fix the console

Exactly.  If the categorization rules did not map well to their system, 
they would write a new sorter plugin and get the display just the way 
they want it.  If you have time, please take a look at the the new 
configuration stuff David Jencks put in, and I bet you will see how 
simple it is to use a hierarchy based name system.


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