Groovy closure from Java code

[Erwin Mueller-3]

Hi,
how can I create a groovy closure in Java?
In addition, how can I invoke a groovy closure in Java?

For example, I have this Groovy code:
---groovy---
public method(closure) {
    closure()
}
---groovy---
---java---
public void main() {
    GroovyClass gclass = new GroovyClass();
    ??? closure = new ???
    gclass.method(closure);
}
---java---

The additional question, how can I invoke the closure from Java:
---java---
public void main() {
    ??? closure = new ???
    closure.invoke() ???
}
---java---

Thank you a lot for your help,
Regards,
Erwin
--
Erwin Mueller, devent.ml@...
http://www.global-scaling-institute.de/
http://www.deventm.org

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[Guillaume Laforge-2]

You can do something like that in Java:

Closure c = new Closure(someOwnerObject);
c.call(someParameter);

On Thu, Nov 5, 2009 at 23:54, Erwin Mueller <devent.ml@...> wrote:

> Hi,
> how can I create a groovy closure in Java?
> In addition, how can I invoke a groovy closure in Java?
>
> For example, I have this Groovy code:
> ---groovy---
> public method(closure) {
>    closure()
> }
> ---groovy---
> ---java---
> public void main() {
>    GroovyClass gclass = new GroovyClass();
>    ??? closure = new ???
>    gclass.method(closure);
> }
> ---java---
>
> The additional question, how can I invoke the closure from Java:
> ---java---
> public void main() {
>    ??? closure = new ???
>    closure.invoke() ???
> }
> ---java---
>
> Thank you a lot for your help,
> Regards,
> Erwin
> --
> Erwin Mueller, devent.ml@...
> http://www.global-scaling-institute.de/
> http://www.deventm.org
>
> ---------------------------------------------------------------------
> To unsubscribe from this list, please visit:
>
>    http://xircles.codehaus.org/manage_email
>
>
>

--
Guillaume Laforge
Groovy Project Manager
Head of Groovy Development at SpringSource
http://www.springsource.com/g2one

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[Jochen Theodorou]

Guillaume Laforge schrieb:
> You can do something like that in Java:
>
> Closure c = new Closure(someOwnerObject);
> c.call(someParameter);

oh, that would fail, since there is no doCall method. It is needed to
subclass Closure and give it a doCall method. using call is correct
though, since call will call doCall.

bye blackdrag

--
Jochen "blackdrag" Theodorou
The Groovy Project Tech Lead (http://groovy.codehaus.org)
http://blackdragsview.blogspot.com/


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