Comments on: Flex ArrayCollection Performance

By: Flex: Wrapping an ArrayCollection of Arrays « Justin J. Moses : Blog

Flex: Wrapping an ArrayCollection of Arrays « Justin J. Moses : Blog — Tue, 07 Apr 2009 02:53:09 +0000

[...] enable databinding. You could alter it slightly to handle ArrayCollections, but as we can see from Jon Rose’s blog and examples, you lose performance with a high number of [...]

By: Drunk on Software » Blog Archive » Episode 3: Performance Pitfalls of Flex’s ArrayCollection

Fri, 28 Nov 2008 01:53:41 +0000

[...] of working with large data sets in Flex. For additional details read Jon’s blog about the performance problems with ArrayCollection and check out the associated bug in Flex’s bug db. We’ve also put together two Flex [...]

By: jonr

jonr — Fri, 21 Nov 2008 22:25:29 +0000

Thanks for the comment Matt! I actually tried the approach you are describing. I explain what happened in the following post: http://ectropic.com/wordpress/?p=63.

By: Matt

Matt — Fri, 21 Nov 2008 19:51:44 +0000

Interesting find. Could you enable the legacy-collection setting and then have your result handler wrap the resulting array in an ArrayCollection before passing it on to the rest of the system? That way you get the best of both worlds (no events fired during deserialization but still get the benefits of ArrayCollection later) with only localized code changes. Or is that what you’re doing already?

By: Velo

Velo — Fri, 21 Nov 2008 13:15:01 +0000

I’m not 100% of this, didn’t try. But, instead of returning a List you could change you method to return an Array[]

Just add an extra line and invoke List.toArray(new ?[0]);

I think is better then using legacy-collection setting.

By: Jon Rose’s Blog » Blog Archive » Chat on Performance Pitfalls of Flex’s ArrayCollection

Fri, 21 Nov 2008 06:57:49 +0000

[...] James and I have posted our latest video, Performance Pitfalls of Flex’s ArrayCollection. It is a follow-up to my recent post on the problems we encourtered with ArrayCollection. [...]

By: Campbell Anderson

Campbell Anderson — Fri, 21 Nov 2008 03:50:34 +0000

P.S. if its just the events that are slow. override the “dispatchEvent” method (part of IEventDispatcher) to have a switch to stop it, or stack the events for later disptach.

By: Campbell Anderson

Campbell Anderson — Fri, 21 Nov 2008 03:41:52 +0000

Wait until you start dealing with Hierarchical collections (multidimensional Arraycollections) where events have to propagate up the tree. Try getting any decent sized tree happening and you may as-well have just started with Arrays.

By: Jon Rose’s Blog » Blog Archive » Flex Immaturities

Jon Rose’s Blog » Blog Archive » Flex Immaturities — Fri, 07 Nov 2008 13:01:48 +0000

[...] similar pain for me was ArrayCollection (see previous post). In my previous post, I didn’t discuss our attempts to extend ArrayCollection to control [...]

By: teddy

teddy — Thu, 06 Nov 2008 10:48:58 +0000

got the same problem with my project, change back from arraycollection to array for some function.