On Thu, Apr 10, 2014 at 2:17 PM, Roland Kuhn <[email protected]> wrote:
> It is slightly inconsistent, though: consider
>
> /a/*/c
>
>
> - if a does not exist, we reply
> - if it has no children, we don't reply
> - if one of its children has no `c` then we reply
>
>
> I think we should send ActorIdentity(None) if a pattern matches nothing.
>
I agree, but we can maybe do even better. Consider:
/user/a/b/c
/user/x
/user/y/b
actorSelection("/user/*/b/c")
will give 3 replies, 2 of which are ActorIdentity(None)
I think it should never reply with ActorIdentity(None) after a wildcard
fan-out to more than one branch.
Non-matching wildcard can reply with None, and after wildcard match of one
child it can also reply with None later.
/Patrik
>
> Regards,
>
> Roland
>
> 10 apr 2014 kl. 12:24 skrev Heiko Seeberger <[email protected]>:
>
> Makes total sense. Should be documented more explicitly, though.
>
> Thanks
> Heiko
>
>
> On Thu, Apr 10, 2014 at 11:13 AM, Patrik Nordwall <
> [email protected]> wrote:
>
>> This is by design for wildcard selections and I think it would be very
>> difficult to implement it.
>> When should it reply with ActorIdentity(None)? The wildcard can
>> potentially traverse remote nodes.
>>
>> /Patrik
>>
>>
>> On Thu, Apr 10, 2014 at 10:58 AM, chris <[email protected]>wrote:
>>
>>> Thanks!
>>>
>>>
>>> On Thursday, April 10, 2014 10:39:45 AM UTC+2, Heiko Seeberger wrote:
>>>
>>>> Hi,
>>>>
>>>> I can verify this behavior which I consider a bug.
>>>> Ticket created: https://www.assembla.com/spaces/akka/tickets/3992
>>>>
>>>> Heiko
>>>>
>>>>
>>>> On Thu, Apr 10, 2014 at 9:56 AM, chris <[email protected]> wrote:
>>>>
>>>>> Hi,
>>>>> an interesting question got posted on stackoverflow:
>>>>> https://stackoverflow.com/questions/22948717/
>>>>> actorselection-does-not-respond-when-wildcard-is-used
>>>>>
>>>>> When using an actor selection with wildcards (which does not match
>>>>> an actor) no response
>>>>> (ActorIdentity) is sent to the Identify message. Is this normal
>>>>> behaviour?
>>>>>
>>>>> Cheers,
>>>>> Christian
>>>>>
>>>>> --
>>>>> >>>>>>>>>> Read the docs: http://akka.io/docs/
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>>>>
>>>>
>>>>
>>>> --
>>>>
>>>> Heiko Seeberger
>>>> Twitter: @hseeberger
>>>> Blog: blog.heikoseeberger.name
>>>>
>>>
>>> --
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>>
>>
>> --
>>
>> Patrik Nordwall
>> Typesafe <http://typesafe.com/> - Reactive apps on the JVM
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>
>
>
> --
>
> Heiko Seeberger
> Twitter: @hseeberger
> Blog: blog.heikoseeberger.name
>
> --
> >>>>>>>>>> Read the docs: http://akka.io/docs/
> >>>>>>>>>> Check the FAQ:
> http://doc.akka.io/docs/akka/current/additional/faq.html
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>
>
> *Dr. Roland Kuhn*
> *Akka Tech Lead*
> Typesafe <http://typesafe.com/> - Reactive apps on the JVM.
> twitter: @rolandkuhn
> <http://twitter.com/#!/rolandkuhn>
>
> --
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--
Patrik Nordwall
Typesafe <http://typesafe.com/> - Reactive apps on the JVM
Twitter: @patriknw
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--
>>>>>>>>>> Read the docs: http://akka.io/docs/
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>>>>>>>>>> http://doc.akka.io/docs/akka/current/additional/faq.html
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