Groovy methodMissing
I have a closure within an object Foo and inside the closure i define a method called 'myStaticMethod' that I want to resolve once the closure is called outside the object Foo. I also happen to have 'on purpose' a static开发者_运维知识库 method within my object Foo with the same name. When I call the closure i set the 'resolve strategy' to DELEGATE_ONLY to intercept the call to myStaticMethod that is defined within the closure.
I tried to achieve that through missingMethod but the method is never intercepted. When i make the Foo.myStaticMethod non static, the method is intercepted. I don't quite understand why this is happening though my resolve strategy is set to DELEGATE_ONLY. having the Foo.myStaticMethod static or not shouldn't matter or I am missing something
class Foo {
static myclosure = {
myStaticMethod()
}
static def myStaticMethod() {}
}
class FooTest {
def c = Foo.myclosure
c.resolveStrategy = Closure.DELEGATE_ONLY
c.call()
def missingMethod(String name, def args) {
println $name
}
}
To solve the problem, I ended up overriding the invokeMethod right before calling the closure in FooTests
Foo.metaClass.'static'.invokeMethod = { String name, args ->
println "Static Builder processing $name "
}
While trying to solve this problem, i discovered a very weird way to intercept missing static methods. Might be useful to some of you in the future.
static $static_methodMissing(String name, args) {
println "Missing static $name"
}
-Ken
Static methods unfortunately aren't intercepted by the closure property resolution. The only way that I know to intercept those is to override the static metaClass invokeMethod on the class that owns the closure, ex:
class Foo {
static myclosure = {
myStaticMethod()
}
static myStaticMethod() {
return false
}
}
Foo.metaClass.'static'.invokeMethod = { String name, args ->
println "in static invokeMethod for $name"
return true
}
def closure = Foo.myclosure
assert true == closure()
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