Corin,
You have inspired me to create a new Wiki page for these sorts of
problems:
http://en.wikibooks.org/wiki/Programming:WebObjects/EOF/Using_EOF/
Breaking_EOF
Good luck, you might have some long days in front of you.
Chuck
On Mar 20, 2007, at 10:15 PM, Corin Lawson wrote:
Hi List,
I've run into a rather nasty little problem after making some
changes to my app recently. The problem never showed in testing and
is difficult to contrive (which is the nasty bit).
After an arbitrary and large number of requests, an arbitrary and
small proportion of fetches fail. That is to say that some fetches
give an object whose properties are all null.
For example I wish to fetch a Member with username 'x'. I use a
named EOFetchSpecification, specify the qualifier bindings and
fetch my EOs.
EOFetchSpecification fetchSpec =
EOFetchSpecification.fetchSpecificationNamed("usernameFetchSpec",
"Member");
fetchSpec = fetchSpec.fetchSpecificationWithQualifierBindings(new
NSDictionary("x", "usernameValue"));
NSArray results = ec.objectsWithFetchSpecification(fetchSpec);
I most cases I receive the expected results, but in some the first
Member object in the NSArray has a null username, password, etc.
I think this is a known problem I remember something about a
locking issue. (?)
Please help.
Cheers,
Corin.
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