Do i need to lock getting EODatabaseContext's snapshotForGlobalID() ?
Do i need to lock getting EODatabaseContext's snapshotForGlobalID() ?
- Subject: Do i need to lock getting EODatabaseContext's snapshotForGlobalID() ?
- From: Peter Vandoros <email@hidden>
- Date: Tue, 08 Jan 2008 14:09:16 +1100
Hi List,
I need to get to the EODatabaseContext's snapshot for a particular
EOGlobalID and was wondering if i needed to do any other locking other
than on the EOEditingContext i am passing in to the method below?
public static NSDictionar
databaseContextSnapshotForGlobalID(EOEditingContext ec, EOGlobalID
globalID) {
EOObjectStoreCoordinator osc = (EOObjectStoreCoordinator)
ec.rootObjectStore();
EODatabaseContext dbc = (EODatabaseContext)
osc.objectStoreForGlobalID( globalID );
return dbc.snapshotForGlobalID( globalID );
}
I have looked at WOnder's RXEOAccessUtilities.databaseContextForObject()
method and found that no locking is done.
I thought that we _always_ need to lock the EOObjectStoreCoordinator and
EODatabaseContext even if we have already locked the EOEditingContext
because other EOEditingContext's could be accessing the them at the same
time on a different Thread. Isn't this correct or is this a special
exception to the rule?
Thanks
--
Peter Vandoros
Software Engineer
Etech Group Pty Ltd
Level 3/21 Victoria St
Melbourne VIC 3000
Australia
Ph: +61 3 9639 9677
Fax: +61 3 9639 9577
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