Sorry. Just reread my past post and it is indeed unclear. I will post
running code tonight. I very much appreciate your help.
On Tue, Nov 10, 2009 at 1:27 AM, David Pollak <feeder.of.the.be...@gmail.com
> wrote:
>
>
> On Mon, Nov 9, 2009 at 10:10 PM, Jack Widman <jack.wid...@gmail.com>wrote:
>
>> The only difference between your working code and mine is that mine has a
>> process in the background that is always running and puts Foo objects on a
>> queue whenever they are ready. Where can I start this long running process
>> so that it doesn't interfere with the lowPriority method that takes things
>> off the queue and rerenders the page. I tried starting the process in its
>> own Actor that I start in localSetup but it seems somehow to be blocking the
>> lowPriority method from doing its thing.
>>
>
> I have no idea what this means... sorry.
>
> Please post actual runnable code and we can help you debug.
>
>
>>
>> On Sun, Nov 8, 2009 at 11:35 PM, David Pollak <
>> feeder.of.the.be...@gmail.com> wrote:
>>
>>> Jack,
>>>
>>> I reproduced your code and it seems to work fine. I've enclosed a
>>> working copy.
>>>
>>> Some comments about your code:
>>>
>>> - The foos variable and the foo variable may be getting confused in
>>> the code... the render method may be rendering the same thing based on
>>> the
>>> unchanging foos variable.
>>> - Doing null testing is a sign that you have logic errors in your
>>> code. I strongly recommend using either Box or Option for everything
>>> that
>>> can logically not contain a value/reference. If you're bridging out to
>>> Java
>>> code and are expecting null from the Java code, write a small bridge that
>>> will wrapper the Java return values in Box/Option.
>>> - You have a case class (Tick) that contains no parameters. Please
>>> use a case object instead.
>>> - Your Tick look is a spin loop. You fire a Tick message as part of
>>> processing the Tick message. I would suggest that if you're polling,
>>> that
>>> you have a reasonable poll interval, otherwise you'll starve your CPU.
>>> Further, having reRender on each loop through means that you're forcing a
>>> lot of bytes over the wire rather than only doing a reRender on changed
>>> values.
>>>
>>> Thanks,
>>>
>>> David
>>>
>>> On Sun, Nov 8, 2009 at 3:47 PM, Jack Widman <jack.wid...@gmail.com>wrote:
>>>
>>>> Sorry. Here it is: As I said, I know that when render is called,
>>>> foo.getValue has the right value. But it does not show on the screen,
>>>> unless
>>>> I refresh the browser.
>>>>
>>>> package com.foo.comet
>>>>
>>>> import net.liftweb._
>>>> import http._
>>>> import js._
>>>> import JsCmds._
>>>> import net.liftweb.util._
>>>> import net.liftweb.http._
>>>> import _root_.scala.xml._
>>>> import scala.actors._
>>>> import com.authoritude.snippet._
>>>> import scala.collection.mutable.Queue
>>>> import net.liftweb.http.SessionVar
>>>>
>>>>
>>>> class MyComet extends CometActor {
>>>>
>>>> override def defaultPrefix = Full("auth")
>>>>
>>>> private var foos = FooManager.getFoos
>>>>
>>>> def createDisplay(foos:List[Foo]):NodeSeq = {
>>>> <span id="go"><table>
>>>> {
>>>> for {foo <- foos} yield <tr><td>{foo.getValue}</td></tr>
>>>> }
>>>>
>>>> </table></span>
>>>> }
>>>>
>>>> def render = { bind("foo" -> createDisplay(foos)) }
>>>>
>>>> override def localSetup = {
>>>> super.localSetup
>>>> this ! Tick
>>>> }
>>>>
>>>> var foo:Foo = null
>>>> override def lowPriority = {
>>>> case Tick => {
>>>> foo=FooQueue.getLatest
>>>> if (foo!=null && foo.getValue > -1) {
>>>> blogs = FooManager.process(foo, foos)
>>>> } else if (foo!=null){
>>>> foos = foos.remove((f:Foo)=>(f.id==foo.id))
>>>> }
>>>> reRender(false)
>>>> this ! Tick
>>>> }
>>>> }
>>>> }
>>>>
>>>> case class Tick
>>>>
>>>>
>>>>
>>>> On Sun, Nov 8, 2009 at 5:31 AM, Timothy Perrett <
>>>> timo...@getintheloop.eu> wrote:
>>>>
>>>>>
>>>>> Without posting your code it's going to be tough to help you.
>>>>>
>>>>> Cheers, Tim
>>>>>
>>>>> Sent from my iPhone
>>>>>
>>>>> On 8 Nov 2009, at 08:14, jack <jack.wid...@gmail.com> wrote:
>>>>>
>>>>> >
>>>>> > By the way, I know that when render is called, all the variables have
>>>>> > the right values. I just don't see it on the screen unless I refresh
>>>>> > it.
>>>>> >
>>>>> > On Nov 8, 3:12 am, jack <jack.wid...@gmail.com> wrote:
>>>>> >> I have a CometActor. render is called when it is supposed to be but
>>>>> I
>>>>> >> don't see the changes. If I refresh the page at anytime, I do see
>>>>> the
>>>>> >> changes. Any idea what might cause this?
>>>>> > >
>>>>> >
>>>>>
>>>>>
>>>>>
>>>>
>>>>
>>>> --
>>>> Jack Widman
>>>>
>>>> co-founder / cto, Authoritude, Inc.
>>>>
>>>> 203-641-9355
>>>>
>>>>
>>>>
>>>>
>>>
>>>
>>> --
>>> 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 Widman
>>
>> co-founder / cto, Authoritude, Inc.
>>
>> 203-641-9355
>>
>>
>>
>
>
> --
> 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 Widman
co-founder / cto, Authoritude, Inc.
203-641-9355
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