Hi Ramsey
To get a new database channel, you can initiate a new OSC and get a new
access layer stack. This has to be done at session constructor, for after
which, you will not be able to get the new database channel. Putting aside
the argument whether it is necessary or good design or not, it works. If I
could remember, this is also mentioned in the WO legacy documentation.
Cheers
Cheong Hee
----- Original Message -----
From: "Ramsey Gurley" <[email protected]>
To: "WebObjects Development" <[email protected]>
Sent: Friday, March 23, 2012 10:34 AM
Subject: Opening multiple database channels
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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