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Why does MEV mark the server as busy
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skingaby View Drop Down
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Joined: 23-Apr-2008
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Posts: 146 		Post Options Post Options   Quote skingaby Quote  Post ReplyReply Direct Link To This Post Topic: Why does MEV mark the server as busy
    Posted: 22-Jul-2009 at 1:00pm
When Mev is performing an async operation, the BasicPersistenceService class has a FetchingHandler that sets the service to Busy.
Why was this done? Is there a problem with executing multiple async queries simultaneously?
Thanks!
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WardBell View Drop Down
IdeaBlade
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Joined: 31-Mar-2009
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Posts: 338 		Post Options Post Options   Quote WardBell Quote  Post ReplyReply Direct Link To This Post Posted: 22-Jul-2009 at 6:52pm
Nope. No problem at all. I just didn't want to have to deal with coordinating them and worrying about async queries launched after other async queries. Totally do-able. Just lazy.
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skingaby View Drop Down
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Posts: 146 		Post Options Post Options   Quote skingaby Quote  Post ReplyReply Direct Link To This Post Posted: 22-Jul-2009 at 7:32pm
That definitely sounds like as good a reason as any. We have a UI that needs to load the collections for a bunch of combo boxes so we thought it would be best to kick off all those async queries as the scene loads.
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WardBell View Drop Down
IdeaBlade
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Posts: 338 		Post Options Post Options   Quote WardBell Quote  Post ReplyReply Direct Link To This Post Posted: 22-Jul-2009 at 8:28pm
Be SURE to checkout the DevForce AsyncParallelTask class which helps you stack up a bunch of tasks (such as queries) and run them together. You supply a final callback. Let it do the bookkeeping.
 
The AsyncSerialTask is great for chaining a sequence of tasks, each of which depends upon the successful completion of the prior task.
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skingaby View Drop Down
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Posts: 146 		Post Options Post Options   Quote skingaby Quote  Post ReplyReply Direct Link To This Post Posted: 24-Jul-2009 at 8:02am
Thanks! Those classes will be VERY helpful.
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