Ah, nice, just checking if you knew about it as an option.
On Nov 13, 8:08 am, Jack Widman <jack.wid...@gmail.com> wrote:
> I did and its actually in the code I attached. In one place I use Dispatch
> and in another place I use httpclient directly. I intend to use Dispatch for
> everything.
>
>
>
> On Thu, Nov 12, 2009 at 4:05 PM, Randinn <rand...@gmail.com> wrote:
>
> > I'm not trying to change the subject but I was wondering if you looked
> > at Databinder Dispatchhttp://databinder.net/dispatch/Aboutfor your
> > url calls?
>
> > On Nov 12, 3:26 pm, Jack Widman <jack.wid...@gmail.com> wrote:
> > > David,
>
> > > I have attached my code. It runs but does not behave as I intended it to.
> > > The code does a web search on the term "scala" and displays a list of
> > URLs
> > > of the results. Next to each URL it says "Page Length : -1". A process is
> > > running in the background which takes each URL, goes out and gets the
> > page
> > > and takes the length of the page. The length of that page is then
> > supposed
> > > to immediately appear on the page next to that URL. I put the lengths on
> > a
> > > queue, as they come in, and I have the Comet page poll the queue and
> > display
> > > the results. It would probably be better to have the results send a
> > message
> > > to the Comet class so the page is only re-rendered when there is a change
> > > but for now I am polling.
>
> > > I can see the lengths coming in and being put on the queue, but the Comet
> > > page is not getting them till they are all retrieved. (This takes way too
> > > long and nothing changes on the screen till its too late). I need them to
> > > appear as they come in. Occasionally I can see a length being retrieved
> > and
> > > the Comet page finds it but even then it is not displayed until all the
> > > lengths are in. I know this is not very clear but I think it will be
> > clear
> > > from the code.
>
> > > I also know there are a lot of places in the code which can be improved
> > and
> > > I welcome all of your input but what I would love is to have these
> > numbers
> > > appear on the page as they they are retrieved. I have been stumped by
> > this
> > > for a while and I suspect that somebody who knows Lift well might see the
> > > problem right away.
>
> > > The class that retrieves the page lengths is called Calculator and the
> > queue
> > > is called SourceQueue. The classes are pretty small so hopefully it will
> > be
> > > clear what is going on. I want you to know I think it is incredible how
> > > responsive you and the group are and I look forward to using Lift in the
> > > future.
>
> > > Thanks so much.
>
> > > Jack
>
> > > 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 frameworkhttp://liftweb.net
> > > >>> Beginning Scalahttp://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 frameworkhttp://liftweb.net
> > > > Beginning Scalahttp://www.apress.com/book/view/1430219890
> > > > Follow me:http://twitter.com/dpp
> > > > Surf the harmonics
>
> > > widman.tgz
> > > 187KViewDownload
>
> --
> Jack Widman
>
> co-founder / cto, Authoritude, Inc.
>
> 203-641-9355
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