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Add data to an ArrayCollection

Posted on 2009-04-07
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Last Modified: 2013-11-11
I have two array collections, and they both have a field in common: sourceCode

I would like to push the data from the 2nd into the first. What's the best way to accomplish this?
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Question by:hallikpapa
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Expert Comment

by:lexxwern
ID: 24093824
If you want to merge two array collections, you will use the addAll() method. Example below:
var ac1:ArrayCollection;
var ac2:ArrayCollection;
 
// .. .some code ...
 
// merge ac2 into ac1
ac1.addAll( ac2 );
 
// merge ac2 into ac1 at index 5
ac1.addAllAt( ac2, 5 );
 
// add single object
ac1.addItem( new Object );

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Author Comment

by:hallikpapa
ID: 24094032
Thanks. So would I use a cursor on ac1, and then loop through ac2, and when there is a match on the sourceCode on ac1 == ac2, push ac2 into ac1 on that index...somehow?

Mind showing an example? In my scenario, ac2 will have a lot more sourceCode(s) than ac1. So I only want to push it if there is a match.
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Accepted Solution

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lexxwern earned 500 total points
ID: 24094080
Try something like this:
var ac1:ArrayCollection;
var ac2:ArrayCollection;
 
// .. some code ..
 
var currentAc1Object:Object;
var currentAc2Object:Object;
 
for each( currentAc1Object in ac1 ) {
   for each( currentAc1Object in ac2 ) {
      if( currentAc1Object.sourceCode == currentAc2Object.sourceCode ) {
         ac1.addItemAt( currentAc2Object, ac1.getItemIndex(currentAc1Object) + 1 );
      }
   }
}

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