AS3 Delete child node from XML by child value

Question

I've got an XML with a structure like the following;

 <items>
    <item>5</item>
    <item>3006</item>
    <item>25</item>
    <item>458</item>
    <item>15</item>
    <item>78</item>
 </items>

How do I delete the item with the value 458. Just to clarify this, I don't know the index of that item, so simply calling delete items[index] won't do here. I have to delete by value.

Any hints?

Adrian Pirvulescu · Accepted Answer · 2014-03-28 10:27:14Z

7

this should solve it. Btw this will delete all direct chilren with name "item" that have value 458.

delete xml.(item == "458");

To delete recursively all children and subchildren that have name "item" and value 458 use:

delete xml..(item == "458");

edited Mar 28, 2014 at 10:27

answered Mar 13, 2012 at 13:13

Adrian Pirvulescu

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3 Comments

DoomGoober Over a year ago

This doesn't work for me. I get an exception saying that delete doesn't work on XMLList. I had to do: delete handXML.tile.(@type == boostType)[0];

Adrian Pirvulescu Over a year ago

@DoomGoober This answer is based on this particular example, If you have a different xml structure for sure it will not work. Please have a look at the example provided inside the question. Also are you sure you are not deleting only the first set of titles ?

DoomGoober Over a year ago

My comment wasn't clear. But, delete xml.(item == "458"); won't work either! xml.(item == "458") evaluates to an XMLList. delete doesn't work on XMLList, only on XML itself. Thus, the only way to actually get an XML object is to use the indexer. delete xml.(item == "458")[0];

Patrick · Accepted Answer · 2012-03-13 11:09:18Z

4

Using e4x filtering and the possibilities of using function inside the filter you can delete the node you want :

xml.item.(text()==value) will give you the node your are looking for
valueOf() will give you the current node you are filtering
delete will delete the node

so combining these infos you can do :

var xml:XML=<items>
    <item>5</item>
    <item>3006</item>
    <item>25</item>
    <item>458</item>
    <item>15</item>
    <item>78</item>
 </items>;

 function deleteValue(xml:XML, value:String):void{
   xml.item.((text()==value) && (delete parent().children()[valueOf().childIndex()]));
 }

 deleteValue(xml, "458");

 trace(xml.toXMLString());

answered Mar 13, 2012 at 11:09

Patrick

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2 Comments

WORMSS Over a year ago

Works... But makes me want to cry. For readability I would have stuck with a for..loop

AlBirdie Over a year ago

Given that I access child components of my initial XML, my source XML for this would be an XMLList (sorry I just realised that), thus I need to convert my XMLList to XML first, which gives me some problems.

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