Comments on: Ways to use E4X to filter data in ActionScript 3 http://joshblog.net/2007/05/08/methods-to-filter-data-with-e4x-in-flash-9/ Just another WordPress site Tue, 31 Jan 2012 13:51:35 +0000 hourly 1 http://wordpress.org/?v=3.3.1 By: AS3/E4X: Rekursiv alle Unterknoten mit einem Attribut finden / crusy.net http://joshblog.net/2007/05/08/methods-to-filter-data-with-e4x-in-flash-9/#comment-5283 AS3/E4X: Rekursiv alle Unterknoten mit einem Attribut finden / crusy.net Tue, 08 Mar 2011 13:47:48 +0000 http://www.zeuslabs.us/2007/05/08/methods-to-filter-data-with-e4x-in-flash-9/#comment-5283 [...] ist. Man beachte: Den doppelten Punkt hinter “xml”, sowie den Sternchen-Selektor. Quelle, man beachte auch die unten verlinkten weiterführenden [...] [...] ist. Man beachte: Den doppelten Punkt hinter “xml”, sowie den Sternchen-Selektor. Quelle, man beachte auch die unten verlinkten weiterführenden [...]

]]> By: Auzzie http://joshblog.net/2007/05/08/methods-to-filter-data-with-e4x-in-flash-9/#comment-550 Auzzie Sat, 06 Feb 2010 19:23:07 +0000 http://www.zeuslabs.us/2007/05/08/methods-to-filter-data-with-e4x-in-flash-9/#comment-550 Great post, I was able to use a couple of scripts above but ran into an issue and was wondering if anyone had some insight: I have some data that I separated into labels of a combobox: --- Features3 Features1,Features2,Features3 Features2,Features3 Features1 ---- if (featuresCombo.selectedLabel != item.FEATURES) return false; return true; ---- If you select 'Features3' for example it doesn't return the selections that have multiple entries separated by commas. Is there a way to filter based on the occurance of a string rather than matching the whole string? I tried to use the (contains) function from above and was getting this error:Error #1123: Filter operator not supported on type mx.utils.ObjectProxy. Thanks for any help. -Auzzie Great post, I was able to use a couple of scripts above but ran into an issue and was wondering if anyone had some insight:

I have some data that I separated into labels of a combobox:

—
Features3
Features1,Features2,Features3
Features2,Features3
Features1
—-
if (featuresCombo.selectedLabel != item.FEATURES)
return false;

return true;
—-

If you select ‘Features3′ for example it doesn’t return the selections that have multiple entries separated by commas.

Is there a way to filter based on the occurance of a string rather than matching the whole string?

I tried to use the (contains) function from above and was getting this error:Error #1123: Filter operator not supported on type mx.utils.ObjectProxy.

Thanks for any help.
-Auzzie

]]> By: Kristin http://joshblog.net/2007/05/08/methods-to-filter-data-with-e4x-in-flash-9/#comment-549 Kristin Mon, 25 Jan 2010 18:21:30 +0000 http://www.zeuslabs.us/2007/05/08/methods-to-filter-data-with-e4x-in-flash-9/#comment-549 By the way, while I'm here... I'm trying to write a picture viewer program and I've seen a lot of tuts on the web, but they don't seem to address my needs. I have 3 xml elements: name, file (an image), and comments. I have so many image files that I've chosen to load them into a list component which I can load up with name data. For some reason I've hit a road block in that I don't know how to link the selectedItem in the list box so I can display the other elements on the page. I hope this isn't too complicated a question to ask. Thanks By the way, while I’m here… I’m trying to write a picture viewer program and I’ve seen a lot of tuts on the web, but they don’t seem to address my needs. I have 3 xml elements: name, file (an image), and comments. I have so many image files that I’ve chosen to load them into a list component which I can load up with name data. For some reason I’ve hit a road block in that I don’t know how to link the selectedItem in the list box so I can display the other elements on the page. I hope this isn’t too complicated a question to ask. Thanks

]]> By: Kristin http://joshblog.net/2007/05/08/methods-to-filter-data-with-e4x-in-flash-9/#comment-548 Kristin Mon, 25 Jan 2010 18:14:07 +0000 http://www.zeuslabs.us/2007/05/08/methods-to-filter-data-with-e4x-in-flash-9/#comment-548 Thanks Josh, that was it and I should have tried it. I only had intro classes to Flash MX2004 and that's been almost 3 years ago. Kinda rusty. Thanks Josh, that was it and I should have tried it. I only had intro classes to Flash MX2004 and that’s been almost 3 years ago. Kinda rusty.

]]> By: Josh Tynjala http://joshblog.net/2007/05/08/methods-to-filter-data-with-e4x-in-flash-9/#comment-546 Josh Tynjala Mon, 25 Jan 2010 06:27:02 +0000 http://www.zeuslabs.us/2007/05/08/methods-to-filter-data-with-e4x-in-flash-9/#comment-546 Put the trace() call after the loop and you might see the correct result. During the loop, it's still filtering by field name and value, and that means it will search over each of the items more than once. Put the trace() call after the loop and you might see the correct result. During the loop, it’s still filtering by field name and value, and that means it will search over each of the items more than once.

]]> By: Kristin http://joshblog.net/2007/05/08/methods-to-filter-data-with-e4x-in-flash-9/#comment-545 Kristin Mon, 25 Jan 2010 06:13:45 +0000 http://www.zeuslabs.us/2007/05/08/methods-to-filter-data-with-e4x-in-flash-9/#comment-545 Hey, great article, but I've run into a snag with your last example. I cut and pasted your code and get this in my output window: (your code and your xml file which I swear I did not change) <pre>var filtered:XMLList = data.item; var fields:Array = [{name: "source", value: "Amazon"}, {name: "price", value: "599.99"}];         var fieldCount:int = fields.length; for(var i:int = 0; i <fieldCount; i++) {     var fieldName:String = fields[i].name;     var fieldValue:String = fields[i].value;     filtered = filtered.(child(fieldName) == fieldValue); trace(filtered); }</pre> this code is supposed to return Amazon items worth 599.99, however it returns 3 Amazon items. It's returning 2-599.99 items and 1-399.99 item which is not what's in the xml file. output results Amazon 399.99 Amazon 599.99 Amazon 599.99 I'm new to xml and AS3 so I wanted to make sure this wasn't happening because I'm using Flash CS4 (since your original post is almost 3 years old) Hey, great article, but I’ve run into a snag with your last example. I cut and pasted your code and get this in my output window:

(your code and your xml file which I swear I did not change)

var filtered:XMLList = data.item;
var fields:Array = [{name: "source", value: "Amazon"}, {name: "price", value: "599.99"}];
       
var fieldCount:int = fields.length;
for(var i:int = 0; i <fieldCount; i++)
{
    var fieldName:String = fields[i].name;
    var fieldValue:String = fields[i].value;
    filtered = filtered.(child(fieldName) == fieldValue);
	trace(filtered);
}

this code is supposed to return Amazon items worth 599.99, however it returns 3 Amazon items. It's returning 2-599.99 items and 1-399.99 item which is not what's in the xml file.

output results

Amazon
399.99

Amazon
599.99

Amazon
599.99

I’m new to xml and AS3 so I wanted to make sure this wasn’t happening because I’m using Flash CS4 (since your original post is almost 3 years old)

]]> By: Josh Tynjala http://joshblog.net/2007/05/08/methods-to-filter-data-with-e4x-in-flash-9/#comment-544 Josh Tynjala Thu, 21 Jan 2010 21:56:55 +0000 http://www.zeuslabs.us/2007/05/08/methods-to-filter-data-with-e4x-in-flash-9/#comment-544 Jon, if you have multiple elements as children, it might not be possible to do it in a single statement. You might have to put source into an XMLList and search that separately. However, you might also look at <a href="http://livedocs.adobe.com/flex/3/langref/XMLList.html#contains()" rel="nofollow"><code>contains()</code></a> on XMLList. It might be useful here. I've never played with that one, though. Jon, if you have multiple elements as children, it might not be possible to do it in a single statement. You might have to put source into an XMLList and search that separately.

However, you might also look at contains() on XMLList. It might be useful here. I’ve never played with that one, though.

]]> By: jon http://joshblog.net/2007/05/08/methods-to-filter-data-with-e4x-in-flash-9/#comment-543 jon Thu, 21 Jan 2010 21:26:58 +0000 http://www.zeuslabs.us/2007/05/08/methods-to-filter-data-with-e4x-in-flash-9/#comment-543 trying to figure out how to sort if an item has more than one of the same node type... such as: <item name="Consoles"> <source> PS3 </source> <source> PS2 </source> </item> if I searched for all items with PS2 this would be skipped with the methods used above... trying to figure out how to sort if an item has more than one of the same node type…

such as:

<item name="Consoles">
<source> PS3 </source>
<source> PS2 </source>
</item>

if I searched for all items with PS2 this would be skipped with the methods used above…

]]> By: Giles http://joshblog.net/2007/05/08/methods-to-filter-data-with-e4x-in-flash-9/#comment-542 Giles Tue, 01 Dec 2009 11:03:55 +0000 http://www.zeuslabs.us/2007/05/08/methods-to-filter-data-with-e4x-in-flash-9/#comment-542 Josh, absolutely great post and has helped me out a lot but I seem to have discovered an intractable problem. I am attempting to filter for two attributes within descendants. I've tried using every method I could think of - (contains); attribute(""); hasOwnProperty("@"); att==; but none will work. Flash seems to ignore anything that comes after the &&. Here is one of the lines I've tried, can you think why it won't work? mediaFilterDays = filterDays.(descendants("programme").(@genre == Filter && @media == mediaFilter)); Josh, absolutely great post and has helped me out a lot but I seem to have discovered an intractable problem. I am attempting to filter for two attributes within descendants.

I’ve tried using every method I could think of – (contains); attribute(“”); hasOwnProperty(“@”); att==; but none will work. Flash seems to ignore anything that comes after the &&.

Here is one of the lines I’ve tried, can you think why it won’t work?

mediaFilterDays = filterDays.(descendants(“programme”).(@genre == Filter && @media == mediaFilter));

]]> By: Parenthesis – the round mystery « Max Blog http://joshblog.net/2007/05/08/methods-to-filter-data-with-e4x-in-flash-9/#comment-541 Parenthesis – the round mystery « Max Blog Sat, 07 Nov 2009 14:13:32 +0000 http://www.zeuslabs.us/2007/05/08/methods-to-filter-data-with-e4x-in-flash-9/#comment-541 [...] There are a few nice posts about E4X filters on this blog: http://joshblog.net/2007/05/08/methods-to-filter-data-with-e4x-in-flash-9/ [...] [...] There are a few nice posts about E4X filters on this blog: http://joshblog.net/2007/05/08/methods-to-filter-data-with-e4x-in-flash-9/ [...]

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