It is unfortunate, but it is the way it is. When returning large sets of data like this, we had to stop using webservices returning objects and change to using webservices returning an XML string or HTTPServices returning XML. Having the flash player consume a big blog of XML and then you do what you want with it (like turn it in to AS XML Objects and use it for a grid's dataprovider, etc) is WAY faster than letting flex try to deserialize it all and put it all into memory as strongly typed objects. One perf test we did in 1.5 was to return three hundred items as nested, strongly typed objects took about 45 seconds for the FP to handle the result set and render. When using straight xml, it took about 2 seconds. Of course it all depends on how large your result set as well as how deep and nested your objects are. Karl Cynergy Shameless Plug: Come see us at AJAXWorld next month! Several Cynergy employees, including myself, will be presenting on great Flex topics. Don't miss it!
________________________________ From: [email protected] on behalf of ben.clinkinbeard Sent: Tue 2/27/2007 1:42 PM To: [email protected] Subject: [flexcoders] Flex choking while converting less than 2 MB of data I am calling a web service that sometimes returns up to 1.9 MB of SOAP formatted data. I have left the resultFormat set to object, and it seems to handle the initial parsing into anonymous objects without much trouble. However, when I attempt to convert this structure into class instances the player chokes and usually ends up freezing the browser. The object structure consists of one main Batch object instance, which contains 2000 BatchDocument instances, which in turn each contain a single ClientInfo object instance and up to four Plan object instances. This doesn't seem like a structure that Flex should fail so miserably with as the performance everywhere else has been pretty impressive. I have attempted this using Darron Schall's ObjectTranslator class (http://www.darronschall.com/weblog/archives/000247.cfm <http://www.darronschall.com/weblog/archives/000247.cfm> ) as well as simply passing the anonymous objects to my class constructors. Both result in a completely unusable application. Any help is greatly appreciated. Ben
