Add a conditional clause to IoC Symbol evaluation
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Key: TAP5-842
URL: https://issues.apache.org/jira/browse/TAP5-842
Project: Tapestry 5
Issue Type: New Feature
Components: tapestry-ioc
Affects Versions: 5.2.0.0
Reporter: Howard M. Lewis Ship
It's very common to want to do some extra, extra late binding of symbols ...
generally, to configure things one way for production mode and another way for
development mode.
A symbol syntax such as
${foo ? bar : baz }
(whitespace optional and ignored)
could be used for this (common) situation. First symbol foo is evaluated and
coerced to Boolean, this selects either 'bar' or 'baz' which are then evaluated
as symbols. Thus:
foo.delay.production=1 h
foo.delay.development=1 s
foo.delay = ${tapestry.production-mode ? foo.delay.production :
foo.delay.development}
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