questions about SharedEditingContext
questions about SharedEditingContext
- Subject: questions about SharedEditingContext
- From: Helen He <email@hidden>
- Date: Wed, 20 Jul 2005 14:56:05 -0400
Hi, all:
I am planning to use SharedEditingContext in one of my applications
which only display the data when user searches. I have no experience
about using this editing context. Although I have searched internet for
info and read some docs, I still have several questions need to be
asked:
1. From the doc, it says 'Since shared editing contexts listen for
ObjectsChangedInStoreNotifications, the shared editing context updates
when it learns that an object was modified'. Does that also mean if the
database records changed by other applications, the shared editing
context will get the notification too. If it is not, then how the
application can detect something has been changed in external data
store?
2. Does the SharedEditingContext only work with the
fetchSpecifications which are pointed by either 'Share all objects' or
'Share objects fetched with' options in Shared Object Inspector OR it
can work with any regular fetchSpecifications?
3. After shared EO objects are loaded into sharedEditingContext at
Application level, how can we retrieve the data that is already in
sharedEditingContext at each page ?
4. Is that 'new EOEditingContext().sharedEditingContext()' is same as
'EOSharedEditingContext.defaultSharedEditingContext()'? If it is not,
how can we get the same object of EOSharedEditingContext as in the
application level, which will be used to get objects in each session or
in each page?
5. Does anybody find any memory issue with using
EOSharedEditingContext?
6. Can anyone provide some sample code for using the
EOSharedEditingContext both in Application level and page level?
These are all my questions for now. Hope to see your response soon.
Thanks in advance!
Helen
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