On Apr 3, 2010, at 5:07 PM, Gideon King wrote:
> Wow, this is huge! Obviously the user doesn't expect the document to
> disappear and a new one open up just because they did a Save As operation
I have I'm afraid led you astray. The invalidated objects are not coming from
the Save As operation. The managed objects in the MOC bound to the
NSPersistentDocument, and any other MOCs bound to that same PSC will keep the
NSManagedObjects themselves in sync with the underlying document even as it is
remapped to a new file. I'll send you a sample project from the template that
logs the notifications from NSManagedObjectContext and
NSPersistentStoreCoordinator. The NSManagedObject pointers remain undisturbed.
2010-04-03 18:13:41.110 testDocs[14260:a0f] PSC changed: {
changedUUID = (
"<NSSQLCore: 0x1025513e0>",
"<NSSQLCore: 0x103051890>",
(
"0x1025a4bc0
<x-coredata://7401BACF-50F9-4699-8B65-520963A9B084/Entity/p3>",
"0x103055bc0
<x-coredata://9D960070-9CAE-4BDD-9EDF-99ACCD83AF7F/Entity/p1>",
"0x102504fb0
<x-coredata://7401BACF-50F9-4699-8B65-520963A9B084/Entity/p2>",
"0x103051d40
<x-coredata://9D960070-9CAE-4BDD-9EDF-99ACCD83AF7F/Entity/p3>",
"0x102598810
<x-coredata://7401BACF-50F9-4699-8B65-520963A9B084/Entity/p1>",
"0x1004eeb10
<x-coredata://9D960070-9CAE-4BDD-9EDF-99ACCD83AF7F/Entity/p2>"
)
);
}
2010-04-03 18:13:41.112 testDocs[14260:a0f] PSC changed. Registered objects =
{(
<NSManagedObject: 0x1004db090> (entity: Entity; id: 0x103051d40
<x-coredata://9D960070-9CAE-4BDD-9EDF-99ACCD83AF7F/Entity/p3> ; data: {
name = baz;
}),
<NSManagedObject: 0x1004db120> (entity: Entity; id: 0x103055bc0
<x-coredata://9D960070-9CAE-4BDD-9EDF-99ACCD83AF7F/Entity/p1> ; data: {
name = foo;
}),
<NSManagedObject: 0x1004daea0> (entity: Entity; id: 0x1004eeb10
<x-coredata://9D960070-9CAE-4BDD-9EDF-99ACCD83AF7F/Entity/p2> ; data: {
name = zap;
})
)}
2010-04-03 18:13:53.604 testDocs[14260:a0f] PSC changed: {
changedUUID = (
"<NSSQLCore: 0x103051890>",
"<NSSQLCore: 0x103062860>",
(
"0x10305b680
<x-coredata://9D960070-9CAE-4BDD-9EDF-99ACCD83AF7F/Entity/p1>",
"0x10306a890
<x-coredata://381F89A2-9204-45E8-850B-1CED8022E32E/Entity/p1>",
"0x10305b3c0
<x-coredata://9D960070-9CAE-4BDD-9EDF-99ACCD83AF7F/Entity/p2>",
"0x10306aa80
<x-coredata://381F89A2-9204-45E8-850B-1CED8022E32E/Entity/p2>",
"0x1030681e0
<x-coredata://9D960070-9CAE-4BDD-9EDF-99ACCD83AF7F/Entity/p3>",
"0x10306ae20
<x-coredata://381F89A2-9204-45E8-850B-1CED8022E32E/Entity/p3>"
)
);
}
2010-04-03 18:13:53.604 testDocs[14260:a0f] PSC changed. Registered objects =
{(
<NSManagedObject: 0x1004db090> (entity: Entity; id: 0x10306ae20
<x-coredata://381F89A2-9204-45E8-850B-1CED8022E32E/Entity/p3> ; data: {
name = baz;
}),
<NSManagedObject: 0x1004db120> (entity: Entity; id: 0x10306a890
<x-coredata://381F89A2-9204-45E8-850B-1CED8022E32E/Entity/p1> ; data: {
name = foo;
}),
<NSManagedObject: 0x1004daea0> (entity: Entity; id: 0x10306aa80
<x-coredata://381F89A2-9204-45E8-850B-1CED8022E32E/Entity/p2> ; data: {
name = zap;
})
)}
There are no invalidate managed objects if you create a Core Data document
based app from the Xcode template and then perform Save As. I'll take another
look at your sample project.
- Ben
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