How to get Total Number of XML Nodes?

[mrm5102]

Hello All,

I have a Flash program I'm doing in Actionscript 3, using CS6.

I'm using the XMLSocket Class to read-in XML Data. I will write some sample XML Data that is being sent to the Flash

program below...

I know with this line here (below) I can access the 4th "element or node" of that XML Data.

     Accessing XML Nodes/Elements:

// *I created an XML Variable called xml, and "e.data" contains ALL the XML Data
var xml:XML = XML(e.data);

// Accessing the 4th element of the data:

xml.MESSAGE[3].@VAR;          --->     "loggedOutUsers"

xml.MESSAGE[3].@TEXT;         --->     "15"

     SAMPLE XML DATA:

     <FRAME>

0               <MESSAGE VAR="screen2Display" TEXT="FRAME_1"/>

1               <MESSAGE VAR="numUsers" TEXT="27"/>

2               <MESSAGE VAR="loggedInUsers" TEXT="12"/>

3               <MESSAGE VAR="loggedOutUsers" TEXT="15"/>

4               <MESSAGE VAR="admins" TEXT="2"/>

     </FRAME>

I'm new to Flash and Actionscript but I'm very familiar with other languages and how arrays work and such, and I know for

example, in a Shell Script to get the total number of elements in an array called "myArray" I would write something like

this --> ${#myArray[@]}. And since processing the XML Data looks an awful lot like an array I figured there was maybe

some way of accessing the total number of "elements/nodes" in the XML Data...?

Any thoughts would be much appreciated!

Thanks in Advance,

Matt

[vamsibalu]

xml.childrens();

or

var xmllst:XMLList = xml.MESSAGE

trace("length=",xmllst.length)

You can try.

Thanks,

Bala

[mrm5102]

Hey vamsibatu, thanks for the reply!

vamsibalu wrote:

xml.childrens();

or

var xmllst:XMLList = xml.MESSAGE

trace("length=",xmllst.length)

You can try.

Thanks,

Bala

Not sure if xml.childrens(); was a typo or not but that gives and error. Did you mean to say "xml.children();"..?

Also, I'm using the XMLSocket Class, not sure the differences between XMLList and XMLSocket but when I try to

use the "xml.length()" line it only returns a "1"... Maybe because its enclosed in the <FRAME>...</FRAME> tags??

Thanks Again for the Reply..!!

Thanks,

Matt

[vamsibalu]

xml.MESSAGE[0] will give first MESSAGE node, but if you don't specify index and write only

xml.MESSAGE itwill return you xmllist contains all MESSAGE nodes.

xmllist work like array...

[mrm5102]

Hey vamsibatu, thanks again for the quick reply!

Ohhh, ok I gotcha. That makes more sense.

So I just tried this loop below and I guess I could use this and just keep assigning an int variable to the output so

when it finishes I will be left with a variable containing the total number of elements:

for (var x:int in xml.MESSAGE)
{
     trace("x == " + x);
}


*Which OUTPUTS the Following:

x == 0

x == 1

x == 2

x == 3

x == 4

So I guess I could do something like this and when the loop completes I will be left with the total number of elements/nodes...

var myTotal:int;

for (var x:int in xml.MESSAGE)

{

    myTotal = x;

}

// add '1' to myTotal since the XML Data is zero-based:

myTotal += 1;

trace("myTotal == " + myTotal);

*Which Prints:

"myTotal == 5"

Thanks again for you suggestions, much appreciated!

I think that should be good enough for what I needed. Thanks...

Thanks Again,

Matt

[vamsibalu · Accepted solution]

even you no need to run for loop to know the length

var levelList:XMLList = xml.children();

levelList.length(); will give you the length of all childrens in your case MESSAGE nodes length;

Pls click helpfull if my answer is helpfull.

Thanks,

Bala

[mrm5102]

Ohhh, I see.

At first I didn't see that when you created the XMLList variable you were actually assigning it to MY VARIABLE "xml" with

the ".children()"... I just thought you were showing another way I could go instead of using XMLSocket.... But I gotcha now!!

Much appreciated, thanks for the explainations!

Thanks AGAIN,

Matt