[flexcoders] Re: e4x help
You're probably getting an e4x error on the first empty node (because Attribute
doesn't exist there).
Try to avoid this issue by using the hasOwnAttribute function to make sure
that Attribute actually exists in that node. This probably isn't it, but
it's close:
xmlRoot..(hasOwnAttribute(Attribute))
I'm not sure the above will work because we're not returning a specific level,
but hopefully you get the idea. Use the following URL for a great explanation
of Advanced E4X:
http://joshblog.net/2007/06/29/getting-advanced-with-e4x/
Hope that helps...
--- In flexcoders@yahoogroups.com, michael_regert@... wrote:
I must be missing something simple here. I'm reading in XML that looks like
this:
?xml version=1.0 encoding=UTF-8?
REGISTRY
REGISTRY_DECLARATION/
REGISTRY_ENTRIES
Attribute
AttributeNameAttr_1/AttributeName
/Attribute
Attribute
AttributeNameAttr_2/AttributeName
/Attribute
Attribute
AttributeNameAttr_3/AttributeName
/Attribute
/REGISTRY_ENTRIES
/REGISTRY
I'm trying to get all Atribute nodes using the .. operator, but it always
returns 0, even though xmlRoot looks fine.
protected function xmlService_resultHandler(event:ResultEvent):void
{
if (event != null event.result != null event.result is XML) {
var xmlRoot:XML = event.result as XML;
if (xmlRoot xmlRoot.length() 0) {
var lst:XMLList = xmlRoot..Attribute;
trace(lst length = + lst.length());
}
}
}
Michael
[flexcoders] Re: E4X Help
Tangent,
Remove the {} from around selected :
var counties:XMLList = _myXml.state.(@label=selected).county;
Mike
--- In flexcoders@yahoogroups.com, Tan [EMAIL PROTECTED] wrote:
I try writing two comboboxes to facilitate selection of the
following XML,
data
state label=Texas data=Texas
county label=Jones data=123 /
county label=Taylor data=124 /
...
/state
state label=Virginia data=Virginia
county label=Alexandria data=223 /
county label=Arlington data=224 /
...
/state
...
The first combo box is named _combo1 that is populated by state
data, and I
want to get an XML or XMLList of the counties using AS3, I wonder
whether I
can write it in E4X syntax that looks somewhat like
var selected:String = _combo1.selectedItem.toString();
var counties:XMLList = _myXml.state.(@label = {selected}).county;
I get a compiler error for the last line, and I have searched
through some
E4X samples, didn't seem to find any help. Any advice?
Thanks!
- Tangent
P.S. Or should I use XmlViewCollection, Descriptor or things like that?
--
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RE: [flexcoders] Re: E4X Help
You also need to change = to == in your E4X filter. A working example is below.
- Gordon
?xml version=1.0 encoding=utf-8?
mx:Application xmlns:mx=http://www.adobe.com/2006/mxml;
mx:Script
![CDATA[
private var stateCountyData:XML =
data
state label=Texas data=Texas
county label=Jones
data=123 /
county label=Taylor
data=124 /
/state
state label=Virginia data=Virginia
county label=Alexandria
data=223 /
county label=Arlington
data=224 /
/state
/data;
private function setStates():void
{
stateCombo.dataProvider = stateCountyData.state;
}
private function setCounties():void
{
countyCombo.dataProvider =
stateCountyData.state.(@label == stateCombo.selectedLabel).county;
}
]]
/mx:Script
mx:ComboBox id=stateCombo labelField=@label width=200
creationComplete=setStates(); setCounties()
change=setCounties()/
mx:ComboBox id=countyCombo labelField=@label width=200/
/mx:Application
From: flexcoders@yahoogroups.com [mailto:[EMAIL PROTECTED] On Behalf Of Michael
Labriola
Sent: Friday, October 20, 2006 11:07 AM
To: flexcoders@yahoogroups.com
Subject: [flexcoders] Re: E4X Help
Tangent,
Remove the {} from around selected :
var counties:XMLList = _myXml.state.(@label=selected).county;
Mike
--- In flexcoders@yahoogroups.com, Tan [EMAIL PROTECTED] wrote:
I try writing two comboboxes to facilitate selection of the
following XML,
data
state label=Texas data=Texas
county label=Jones data=123 /
county label=Taylor data=124 /
...
/state
state label=Virginia data=Virginia
county label=Alexandria data=223 /
county label=Arlington data=224 /
...
/state
...
The first combo box is named _combo1 that is populated by state
data, and I
want to get an XML or XMLList of the counties using AS3, I wonder
whether I
can write it in E4X syntax that looks somewhat like
var selected:String = _combo1.selectedItem.toString();
var counties:XMLList = _myXml.state.(@label = {selected}).county;
I get a compiler error for the last line, and I have searched
through some
E4X samples, didn't seem to find any help. Any advice?
Thanks!
- Tangent
P.S. Or should I use XmlViewCollection, Descriptor or things like that?
--
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