Groovy 1.1 beta 3: method missing at log4p

Groovy 1.1 beta 3: method missing

Published by peter September 21st, 2007 in groovy.

Groovy 1.1. beta 3 was announced a couple of days ago and includes some interesting additions to the groovy language, like a real method missing. Grails' lead developer Graeme Rocher has a simple example of the way it works in his blog:

PLAIN TEXT

GROOVY:

Foo.metaClass.methodMissing = { String name, args ->
Foo.metaClass."$name" = { Object[] varArgs ->
"$name : ${varArgs.inspect()}"
}
delegate."$name"(args)
}
def f = new Foo()
f.sayHello('Fred')
assert f.notARealMethod("boo") == 'notARealMethod : [["boo"]]'
assert f.notARealMethod("boo", "hoo") == 'notARealMethod : [["boo", "hoo"]]'

Much better (IMHO) then previous way to do this, which involved intercepting ALL calls to the object on which one would like to catch method missing calls.