Opening multiple database channels
Opening multiple database channels
- Subject: Opening multiple database channels
- From: Ramsey Gurley <email@hidden>
- Date: Thu, 22 Mar 2012 19:34:37 -0700
Hi all,
I'm looking at trying to open multiple database channels in a single instance of a WO app. No reason, just wondering if it can be done. I know there's ERXObjectStoreCoordinator pool, but this conceptually seems like the wrong way to do it. Maybe I want 4 open connections for one database, but only one on another… whatever. So I have a look at
https://developer.apple.com/legacy/mac/library/documentation/WebObjects/Enterprise_Objects/Connecting/Connecting.html#//apple_ref/doc/uid/TP30001011-CH210-TPXREF145
and this seems to be the answer to my question. Well, until I try it. It turns out that inside of objectsWithFetchSpec on EOEditingContext, the objectstore is locked before a fetch takes place. As a result, no other fetch can proceed until the object store is unlocked. The answer seemed suspicious in the fact that it's being done on the Session anyway...
So, I guess my question boils down to… is it even possible? Is this the 'single EOF lock' that Chuck Hill and Ravi Mendis were referring to in a previous list message?
Thanks,
Ramsey
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