Antti Koivunen wrote:
Sorry for the delayed reply. Stephen McConnell wrote:Antti Koivunen wrote:<snip/>
Object logger = context.get(LOGGER);
if (logger instanceof avalon.Logger) {
m_logger = (avalon.Logger) logger;
} else if (logger instanceof commons.Log) {
m_logger = new Commons2AvalonLogger((commons.Log) logger);
}
This would of course also work the other way round, i.e. you could put an instance of VeryNiceLogger2AvalonLogger to the context of VeryNiceService. However, if VeryNiceCompany had never heard of Avalon (or IoC), and used static factories for accessing the loggers, there'd be little we could do without changing the code.
Burrrrk! (i.e. I don;t like the approach) :-)
(figured as much ;)
I suppose it does rather look like a hack :) And actually it would be possible to also hack around the static factory thing by using custom classloaders.
Component declares a logging strategy to the container:
<type>
<loggers>
<attributes>
<attribute key="urn:assembly:lifecycle.logging.strategy"
value="org.somwhere.MyPreferredLoggingInterface"/>
</attributes>
</loggers>
</type>
Cantainer reolves a logging handler and uses this during the logging stage of the deployment lifecycle.
Yes, this is a nice feature.
(it will be a nice feature - it exists for context and I want to propergate the notion into the other lifecycle stage handlers)
Take a look in avalon-sandbox/merlin/src/test/org/apache/avalon/playground/
You will find the file: StandardComponent.xinfo. This component is doing exactly the same thing except its declaring that it wants to use a custom context interface. If you run the merlin demo you will see it working:
$ merlin -profile config/demo.xml
I get the following error:
Fixed - I had some experimental stuff in there using soureresolver that I have removed pending the resolution of a test-case for the sourceresolver package.
Do a CVS update and all should be fine.
Cheers, Steve.
--
Stephen J. McConnell
mailto:[EMAIL PROTECTED]
http://www.osm.net
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