Re: [flexcoders] multiple http requests
AsyncToken, thats very cool. What part of the HTTP header does it use
to match up asyncronous calls?
Randy
On 9/27/07, Tracy Spratt <[EMAIL PROTECTED]> wrote:
>
>
>
>
>
>
> Use a single HTTPService instance, and a single result handler.
>
> When you invoke send(), it returns an AsyncToken. This is a dynamic object
> to which you can add almost any property. I usually add a callid string
> property.
>
> Then in the result handler, I can access the callid property value, and
> process the result data accordingly.
>
> Tracy
>
> Snippets:
>
> Sample code using HTTPService, e4x, handler function to populate a list
> item.
> Also shows usage of AsyncToken.
>
> The DataGrid tag:
>
>
> The HTTPService tag:
> fault="/>
>
> Script block declaration:
> import mx.rpc.Events.ResultEvent;
> [Bindable]private var _xlcMyListData:XMLListCollection;
>
> Invoke send:
> var oRequest:Object = new Object();
> oRequest.Arg1 = "value1";
> var callToken:AsyncToken = service.send(oRequest);
> token.callId = "myQuery1";
>
> Result Handler function:
> private function onResult(oEvent:ResultEvent):void {
> var xmlResult:XML = XML(event.result); //converts result Object to XML. can
> also use "as" operator
> var xlMyListData:XMLList = xmlResult.myListData; //depends on xml format,
> is row data
> _xlcMyListData = new XMLListCollection(xlMyListData); //wrap the XMLList in
> a collection
> trace(_xlcMyListData.toXMLString()); //so you can see exactly how to
> specify dataField or build labelFunction
> var callToken:AsyncToken = oEvent.token;
> var sCallId = callToken.callId; //"myQuery1"
> switch(sCallId) {
> case "myQuery1":
> doQuery2();
> break;
> ...
> }
> }//onResult
>
> ____
> From: flexcoders@yahoogroups.com [mailto:[EMAIL PROTECTED] On
> Behalf Of Mansour Raad
> Sent: Thursday, September 27, 2007 3:32 PM
> To: flexcoders@yahoogroups.com
> Subject: Re: [flexcoders] multiple http requests
>
> the player is limited by the number concurrent http to the _same_ domain of
> the browser (typically 2)
> If u target multiple domains at once - then u should be ok - so - create
> www.host[abcde...].com
>
> Mansour
> http://thunderheadxpler.blogspot.com
> :-)
>
> On Sep 27, 2007, at 11:35 AM, Randy Troppmann wrote:
>
> My application sometimes needs to make a flurry of http requests to a
> web service to populate some values. So it may send out 10 in a row
> quickly. Although the responses always come back in the order that
> they were requested, I am pretty sure that I cannot rely on this
> always being so. So I cache the calls and send them out one at a time
> and only when the previous response has been recieved. But this makes
> the mechanism pretty slow. Is there a better way or a pattern I should
> look at?
>
> - Randy
>
> --
> Flexcoders Mailing List
> FAQ: http://groups.yahoo.com/group/flexcoders/files/flexcodersFAQ.txt
> Search Archives: http://www.mail-archive.com/flexcoders%40yahoogroups.com
> Yahoo! Groups Links
>
> Mansour
> http://thunderheadxpler.blogspot.com
> :-)
>
>
RE: [flexcoders] multiple http requests
Use a single HTTPService instance, and a single result handler. When you invoke send(), it returns an AsyncToken. This is a dynamic object to which you can add almost any property. I usually add a callid string property. Then in the result handler, I can access the callid property value, and process the result data accordingly. Tracy Snippets: Sample code using HTTPService, e4x, handler function to populate a list item. Also shows usage of AsyncToken. The DataGrid tag: The HTTPService tag: mailto:[EMAIL PROTECTED] On Behalf Of Mansour Raad Sent: Thursday, September 27, 2007 3:32 PM To: flexcoders@yahoogroups.com Subject: Re: [flexcoders] multiple http requests the player is limited by the number concurrent http to the _same_ domain of the browser (typically 2) If u target multiple domains at once - then u should be ok - so - create www.host[abcde...].com Mansour http://thunderheadxpler.blogspot.com :-) On Sep 27, 2007, at 11:35 AM, Randy Troppmann wrote: My application sometimes needs to make a flurry of http requests to a web service to populate some values. So it may send out 10 in a row quickly. Although the responses always come back in the order that they were requested, I am pretty sure that I cannot rely on this always being so. So I cache the calls and send them out one at a time and only when the previous response has been recieved. But this makes the mechanism pretty slow. Is there a better way or a pattern I should look at? - Randy -- Flexcoders Mailing List FAQ: http://groups.yahoo.com/group/flexcoders/files/flexcodersFAQ.txt Search Archives: http://www.mail-archive.com/flexcoders%40yahoogroups.com Yahoo! Groups Links Mansour http://thunderheadxpler.blogspot.com :-)
Re: [flexcoders] multiple http requests
the player is limited by the number concurrent http to the _same_ domain of the browser (typically 2) If u target multiple domains at once - then u should be ok - so - create www.host[abcde...].com Mansour http://thunderheadxpler.blogspot.com :-) On Sep 27, 2007, at 11:35 AM, Randy Troppmann wrote: My application sometimes needs to make a flurry of http requests to a web service to populate some values. So it may send out 10 in a row quickly. Although the responses always come back in the order that they were requested, I am pretty sure that I cannot rely on this always being so. So I cache the calls and send them out one at a time and only when the previous response has been recieved. But this makes the mechanism pretty slow. Is there a better way or a pattern I should look at? - Randy -- Flexcoders Mailing List FAQ: http://groups.yahoo.com/group/flexcoders/files/flexcodersFAQ.txt Search Archives: http://www.mail-archive.com/flexcoders% 40yahoogroups.com Yahoo! Groups Links Mansour http://thunderheadxpler.blogspot.com :-)
[flexcoders] multiple http requests
My application sometimes needs to make a flurry of http requests to a web service to populate some values. So it may send out 10 in a row quickly. Although the responses always come back in the order that they were requested, I am pretty sure that I cannot rely on this always being so. So I cache the calls and send them out one at a time and only when the previous response has been recieved. But this makes the mechanism pretty slow. Is there a better way or a pattern I should look at? - Randy
RE: [flexcoders] multiple HTTP Requests
As with other RPC services, an instance of AsyncToken is returned when you call myService.myOperationName(). From: flexcoders@yahoogroups.com [mailto:[EMAIL PROTECTED] On Behalf Of Steve Kellogg @ Project SOC Sent: Monday, December 18, 2006 1:06 PM To: flexcoders@yahoogroups.com Subject: RE: [flexcoders] multiple HTTP Requests Tracy, I've been wondering about AsyncToken... Is there any way to use it with WebService objects that are defined in mxml? I currently define the WebService, and then call "myService.myOperationName();", but I haven't figured out any way to inject an AsyncToken into that procedure. Thanks in Advance for any advice. Steve
RE: [flexcoders] multiple HTTP Requests
Tracy,
I've been wondering about AsyncToken. Is there any way to use it with
WebService objects that are defined in mxml?
I currently define the WebService, and then call
"myService.myOperationName();", but I haven't figured out any way to inject
an AsyncToken into that procedure.
Thanks in Advance for any advice.
Steve
_
From: flexcoders@yahoogroups.com [mailto:[EMAIL PROTECTED] On
Behalf Of Tracy Spratt
Sent: Monday, December 18, 2006 11:00 AM
To: flexcoders@yahoogroups.com
Subject: RE: [flexcoders] multiple HTTP Requests
First, don't use URLLoader, HTTPService is easier.
Second, you *can't* use the result in the same function in which you invoke
send(), you must do that work in the handler function.
Third, use the AsyncToken. You can assign a identifier to each query when
you send it, and use that identifier in a switch statement in a handler
function to determine how to handle the result. Or you can directly assign
a handler function to the AsyncToken.
Tracy
_
From: flexcoders@yahoogroups.com [mailto:[EMAIL PROTECTED] On
Behalf Of Sudha Hariharan
Sent: Monday, December 18, 2006 1:50 AM
To: flexcoders@yahoogroups.com
Subject: [flexcoders] multiple HTTP Requests
hi,
I am rather new to flex and this is one of my amateur attempts at building
RIAs. My application at present includes a tree menu, items of which when
dropped onto a canvas opens up window components. Each window sends a http
request that gets the appropriate data onto the display of the window.
when i include multiple http requests at a given time, the data relevent to
the most recent request is only being displayed. How do I display data from
other http requests simulatenously?
a portion of my code is here
http://localhost/mydoc.php "
useProxy="false" method="POST" result="sHandler(event)">
http://localhost/mydoc1.php "
useProxy="false" method="POST" result="sHandler(event)">
public function onDragDrop(event:DragEvent):void{
var myWindow:ResizableTitleWindow = new ResizableTitleWindow();
var myTextArea:Text = new Text();
var ds:DragSource = event.dragSource ;
if( !ds.hasFormat("treeItems") ) return; // no useful data
var items:Array = ds.dataForFormat("treeItems") as Array;
for(var i:Number=0; i < items.length; i++) {
var item:XML = XML(items[i]);
if( [EMAIL PROTECTED] == "ms"){
userRequest.send();
myTextArea.text= userRequest.lastResult.slk;
}
else if([EMAIL PROTECTED] == "hr"){
userRequest1.send();
myTextArea.text = userRequest1.lastResult.slk;
}
}
myWindow.label = "New Window";
myWindow.x = xvalue;
myWindow.y = yvalue;
myWindow.addChild(myTextArea);
home1.addChild (myWindow);
}
public function sHandler(event:ResultEvent):void
{
myTextArea.text = event.result.slk ;
}
A friend of mine suggested to your URLLoader instead of HTTPRequest...how do
I go about with that?..Please help me
Thanks in Advance,
Sudha Hariharan.
Send free SMS to your Friends on Mobile from your Yahoo! Messenger.
Download Now! http://messenger.yahoo.com/download.php
RE: [flexcoders] multiple HTTP Requests
First, don't use URLLoader, HTTPService is easier.
Second, you *can't* use the result in the same function in which you
invoke send(), you must do that work in the handler function.
Third, use the AsyncToken. You can assign a identifier to each query
when you send it, and use that identifier in a switch statement in a
handler function to determine how to handle the result. Or you can
directly assign a handler function to the AsyncToken.
Tracy
From: flexcoders@yahoogroups.com [mailto:[EMAIL PROTECTED] On
Behalf Of Sudha Hariharan
Sent: Monday, December 18, 2006 1:50 AM
To: flexcoders@yahoogroups.com
Subject: [flexcoders] multiple HTTP Requests
hi,
I am rather new to flex and this is one of my amateur attempts at
building RIAs. My application at present includes a tree menu, items of
which when dropped onto a canvas opens up window components. Each window
sends a http request that gets the appropriate data onto the display of
the window.
when i include multiple http requests at a given time, the data relevent
to the most recent request is only being displayed. How do I display
data from other http requests simulatenously?
a portion of my code is here
http://localhost/mydoc.php "
useProxy="false" method="POST" result="sHandler(event)">
http://localhost/mydoc1.php
" useProxy="false" method="POST" result="sHandler(event)">
public function onDragDrop(event:DragEvent):void{
var myWindow:ResizableTitleWindow = new ResizableTitleWindow();
var myTextArea:Text = new Text();
var ds:DragSource = event.dragSource ;
if( !ds.hasFormat("treeItems") ) return; // no useful data
var items:Array = ds.dataForFormat("treeItems") as Array;
for(var i:Number=0; i < items.length; i++) {
var item:XML = XML(items[i]);
if( [EMAIL PROTECTED] == "ms"){
userRequest.send();
myTextArea.text= userRequest.lastResult.slk;
}
else if([EMAIL PROTECTED] == "hr"){
userRequest1.send();
myTextArea.text = userRequest1.lastResult.slk;
}
}
myWindow.label = "New Window";
myWindow.x = xvalue;
myWindow.y = yvalue;
myWindow.addChild(myTextArea);
home1.addChild (myWindow);
}
public function sHandler(event:ResultEvent):void
{
myTextArea.text = event.result.slk ;
}
A friend of mine suggested to your URLLoader instead of
HTTPRequest...how do I go about with that?..Please help me
Thanks in Advance,
Sudha Hariharan.
Send free SMS to your Friends on Mobile from your Yahoo! Messenger.
Download Now! http://messenger.yahoo.com/download.php
[flexcoders] multiple HTTP Requests
hi,
I am rather new to flex and this is one of my amateur attempts at building
RIAs. My application at present includes a tree menu, items of which when
dropped onto a canvas opens up window components. Each window sends a http
request that gets the appropriate data onto the display of the window.
when i include multiple http requests at a given time, the data relevent to the
most recent request is only being displayed. How do I display data from other
http requests simulatenously?
a portion of my code is here
http://localhost/mydoc.php "
useProxy="false" method="POST" result="sHandler(event)">
http://localhost/mydoc1.php "
useProxy="false" method="POST" result="sHandler(event)">
public function onDragDrop(event:DragEvent):void{
var myWindow:ResizableTitleWindow = new ResizableTitleWindow();
var myTextArea:Text = new Text();
var ds:DragSource = event.dragSource ;
if( !ds.hasFormat("treeItems") ) return; // no useful data
var items:Array = ds.dataForFormat("treeItems") as Array;
for(var i:Number=0; i < items.length; i++) {
var item:XML = XML(items[i]);
if( [EMAIL PROTECTED] == "ms"){
userRequest.send();
myTextArea.text= userRequest.lastResult.slk;
}
else if([EMAIL PROTECTED] == "hr"){
userRequest1.send();
myTextArea.text = userRequest1.lastResult.slk;
}
}
myWindow.label = "New Window";
myWindow.x = xvalue;
myWindow.y = yvalue;
myWindow.addChild(myTextArea);
home1.addChild (myWindow);
}
public function sHandler(event:ResultEvent):void
{
myTextArea.text = event.result.slk ;
}
A friend of mine suggested to your URLLoader instead of HTTPRequest...how do I
go about with that?..Please help me
Thanks in Advance,
Sudha Hariharan.
Send free SMS to your Friends on Mobile from your Yahoo! Messenger. Download
Now! http://messenger.yahoo.com/download.php
