CAMEL-12079: Bean language: support bean::function notation

[snurmine]

No description provided.

[oscerd]

Looks good, but not sure if we want to add other stuff to the bean language. @davsclaus WDYT?

[snurmine]

I just took the ticket from JIRA. If not needed, I can close the PR.

[oscerd]

yeah, my fault. Too much tickets I'm looking at :-)

[oscerd]

I'll merge tomorrow :-)

Thanks for the PR.

[snurmine]

Feel free to wait comments etc.

[davsclaus]

Specifying a method name on a bean is used in a few other places as well. Just search the code for similar pattern

I think we should also get input from @lburgazzoli so lets wait till he get back from PTO

[lburgazzoli]

If there are other places where the . notation is used we should update that too

[lburgazzoli]

We should check first for ::`` then for .otherwise expressions likemy.own.Bean::function` would lead to error

[lburgazzoli]

@snurmine do you have any time to complete this PR ?

[snurmine]

I try after vacation 8.2

[snurmine]

Tried to fix issues. Not sure tough if found every place (I search using ?method=)

[oscerd]

@lburgazzoli can you review? This looks good to me.

[lburgazzoli]

@snurmine it looks good to me, the only additional think I'd like to have is a test that validate method resolution for cases like "my.company.MyClass::method"

[davsclaus]

We need to check for ?method= first because there is a problem with checking for double colon first, as you can potentially pass in parameter values where its included.

bean("myBean?method=blah('hello::world', 6)")

Also a little bit of a 3rd party problem is that Camel tooling need to be aware of this and also add support for checking the double colon syntax as well - but that should be possible. We need to add this to the release note of this change.

Also we need to educate Camel users that the :: syntax is to refer to a method name, its not the same as the Java :: method reference that does the lambda thing. I dont think in Java you can pass in parameter values as you would be able to do in Camel, eg

bean("myBean::blah('hello::world', 6)")

[snurmine]

Added more test cases to BeanTest. ResourceHelper delegates parsing to BeanLanguage now.
I understand that :: is mean tto support dots in the bean name, I mean my.bean.Method('a.b') is not supposed to work?