[loom] [dna] Properties in component configurations

Hello,

Wanted to get your thoughts on using properties in component 
configuration like in maven / jelly.

My first thought is that it should be done transparently by the 
container, but I don't know if that should somehow be mentioned in DNA.  
Thoughts?

It could also be done by another block, ConfigPropertiesResolutionBlock, 
and then declared as a dependency by any component that wants to use it. 
Then, the component would do something like this:

/**
* @dna dependency 
name="org.jcomponent.propertiesresolver.PropertiesResolver"
*/
public void compose(ResourceLocator locator) throws MissingResourceException
{
     this.propertiesResolver = 
locator.lookup("org.jcomponent.propertiesresolver.PropertiesResolver");
}

public void configure(Configuration configuration) throws 
ConfigurationException
{
    Configuration processedConfig = 
propertiesResolver.resolveProperties(configuration);

    // do stuff with processedConfig instead of configuration
}

Which way sounds good to you?

--
Ryan Hoegg
ISIS Networks
http://www.isisnetworks.net