On Mon, Oct 5, 2009 at 11:45 AM, Jack Widman <jack.wid...@gmail.com> wrote:
> Interesting. I will try that. And I won't send any more ShutDownMessages :)
> Though I should add that each CometActor is doing a lot of processing. So I
> it would be good if I could shut one down somehow when the user searches on
> a new term. Timeout won't work because there is no way to know how long it
> will take.
>
> Maybe I could just kill all the actors directly that are doing the
> processing.
>
That's going to be even worse. You'll kill something out from under Lift...
it's going to cause a huge pile of pain.
You can remove an Actor from the session and that will cause ShutDown to be
sent to it, but depending on how the Actor was written it's not going to
stop processing its mailbox.
Bottom line... there's no way to tell if a user is not looking at a page
with an Actor anymore. The best way to deal with that is timing the Actor
out. It's going to take time (your timeout period), but it's the best way
to do it.
>
> On Mon, Oct 5, 2009 at 2:40 PM, David Pollak <
> feeder.of.the.be...@gmail.com> wrote:
>
>>
>>
>> On Mon, Oct 5, 2009 at 10:27 AM, Jack Widman <jack.wid...@gmail.com>wrote:
>>
>>> Understood. My intention is to send a ShutDown message to the CometActor
>>> when somebody closes the browser. I need this so that when they visit the
>>> page in a browser again, the CometActor is 'reset'.
>>>
>>>
>> First, there's no way to determine if the browser window is closed.
>>
>> Second, *DO NOT* send a ShutDown message to the CometActor. This is an
>> internal Lift piece of housekeeping. If you do this, you will break stuff.
>> Don't do it. (There is a reason the message is not private, but it should
>> not be used for this purpose.)
>>
>> CometActors can be named:
>>
>> <lift:comet type="Search" name={searchString}/>
>>
>> You can then have a separate CometActor for each searchString. Voila...
>> you get what you want. Now, how do you make then CometActor go away when
>> it's not being used anymore?
>>
>> In your CometActor:
>> override def lifespan: Box[TimeSpan] = Full(3 minutes)
>>
>> That means if a CometActor does not appear on a page for 3 minutes, it's
>> removed from the session. If the named CometActor is requested again, a new
>> one will be created.
>>
>>
>>
>>>
>>> On Mon, Oct 5, 2009 at 1:18 PM, marius d. <marius.dan...@gmail.com>wrote:
>>>
>>>>
>>>> HTTP session termination does not equate with browser-close event.
>>>>
>>>> Br's,
>>>> Marius
>>>>
>>>> On Oct 5, 3:22 pm, Jack Widman <jack.wid...@gmail.com> wrote:
>>>> > Yes, thats what I meant. Thanks
>>>> >
>>>> > On Mon, Oct 5, 2009 at 4:10 AM, Timothy Perrett
>>>> <timo...@getintheloop.eu>wrote:
>>>> >
>>>> >
>>>> >
>>>> >
>>>> >
>>>> > > But you can do it on session termination (which is what you probably
>>>> > > want):
>>>> >
>>>> > >
>>>> http://scala-tools.org/mvnsites-snapshots/liftweb/lift-webkit/scalado.
>>>> ..
>>>> >
>>>> > > Checkout the method:
>>>> >
>>>> > > registerCleanupFunc
>>>> >
>>>> > > Cheers, Tim
>>>> >
>>>> > > On Oct 5, 8:54 am, Viktor Klang <viktor.kl...@gmail.com> wrote:
>>>> > > > On Mon, Oct 5, 2009 at 6:50 AM, jack <jack.wid...@gmail.com>
>>>> wrote:
>>>> >
>>>> > > > > I would like to call a function when the browser is closed. How
>>>> do I
>>>> > > > > do this?
>>>> >
>>>> > > > You cannot reliably do this.
>>>> >
>>>> > > > --
>>>> > > > Viktor Klang
>>>> >
>>>> > > > Blog: klangism.blogspot.com
>>>> > > > Twttr: viktorklang
>>>> >
>>>> > > > Lift Committer - liftweb.com
>>>> > > > AKKA Committer - akkasource.org
>>>> > > > Cassidy - github.com/viktorklang/Cassidy.git
>>>> > > > SoftPub founder:http://groups.google.com/group/softpub
>>>> >
>>>> > --
>>>> > Jack
>>>>
>>>>
>>>
>>>
>>> --
>>> Jack
>>>
>>>
>>>
>>
>>
>> --
>> Lift, the simply functional web framework http://liftweb.net
>> Beginning Scala http://www.apress.com/book/view/1430219890
>> Follow me: http://twitter.com/dpp
>> Surf the harmonics
>>
>>
>>
>>
>
>
> --
> Jack
>
> >
>
--
Lift, the simply functional web framework http://liftweb.net
Beginning Scala http://www.apress.com/book/view/1430219890
Follow me: http://twitter.com/dpp
Surf the harmonics
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