Re: Modeling an optional to-one relationship
Re: Modeling an optional to-one relationship
- Subject: Re: Modeling an optional to-one relationship
- From: Chuck Hill <email@hidden>
- Date: Fri, 15 Jan 2010 12:50:22 -0800
On Jan 15, 2010, at 11:18 AM, Mark Ritchie wrote:
On 15/Jan/2010, at 11:04 AM, Chuck Hill wrote:
On Jan 15, 2010, at 9:44 AM, Mark Ritchie wrote:
Personally, I like the way that EOF is handling the case. It
works for reading and it correctly warns you when you attempt to
change something that never existed in the first place. There is
also programatic access to detect the case
How are you doing this? Is it much different than the code I sent
a few minutes ago?
Hi Chuck!
From the code which I posted before, this is the method which asks
the DC associated with the given EO for all the objects which didn't
exist in the database using the missingObjectGlobalIDs() method.
private void logObjectsMissingGIDs(EOEditingContext context,
EOEnterpriseObject eo){
EOObjectStore os = context.rootObjectStore();
if(os instanceof EOObjectStoreCoordinator){
EOObjectStoreCoordinator osc = (EOObjectStoreCoordinator)os;
EOObjectStore os2 = osc.objectStoreForObject(eo);
if(os2 instanceof EODatabaseContext){
EODatabaseContext dc = (EODatabaseContext)os2;
NSArray<EOEnterpriseObject> objectsWithMissingGlobalIds =
dc.missingObjectGlobalIDs();
That is an interesting alternative.
NSLog.err.appendln("objectsWithMissingGlobalIds = " +
objectsWithMissingGlobalIds);
}
}
}
M.
--
Chuck Hill Senior Consultant / VP Development
Practical WebObjects - for developers who want to increase their
overall knowledge of WebObjects or who are trying to solve specific
problems.
http://www.global-village.net/products/practical_webobjects
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