Variable expansion support for @Key

[mmadson]

@key("myapp.${webappContextName}.jdbc.url")

Then I could create a new ConfigFactory passing in the webappContextName as a property and get a new jdbc url for each instance of my webapp. That'd be pretty neat.

[mmadson]

taking a quick peek at the source it looks like this is pretty easy to implement, just calling expandVariables on the result of expandKey in the resolveProperty method of the PropertiesInvocationHandler

[lviggiano]

Yes. This is very useful and it's already implemented on master branch.
I would use this feature for a configuration pattern I used in a company, where we needed to select the runtime environment (dev, test, production) from some configuration files.

I wrote the documentation today so I closed the related issue #63

There is already the unit tests for it, so it should work fine.

See the related docs for additional infos. Last paragraph has been added today, and it is specific to this issue you spotted.

[lviggiano]

Let me know if you need something more, related to this, or if the feature I implemented for issue #63 covers your usage pattern, so I can close this issue.

Thanks.

[mmadson]

#63 looks exactly like what I was looking for (sorry for not looking before posting =/ ) Appreciate the quick response, thanks for the great work!

[lviggiano]

Thanks.

sorry for not looking before posting

No worries at all.