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added utility to query transactions about pending inserts, updates, and deletes

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John Rommel Estropia
2016-02-17 00:00:25 +09:00
parent 57bf123fb2
commit def105e73a
1 changed files with 238 additions and 0 deletions
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238
CoreStore/Saving and Processing/BaseDataTransaction.swift
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@@ -202,6 +202,244 @@ public /*abstract*/ class BaseDataTransaction {
}
// MARK: Inspecting Pending Objects
/**
Returns all pending `NSManagedObject`s that were inserted to the transaction. This method should not be called after the `commit()` method was called.
- returns: a `Set` of pending `NSManagedObject`s that were inserted to the transaction.
*/
public func insertedObjects() -> Set<NSManagedObject> {
CoreStore.assert(
self.transactionQueue.isCurrentExecutionContext(),
"Attempted to access inserted objects from a \(typeName(self)) outside its designated queue."
)
CoreStore.assert(
!self.isCommitted,
"Attempted to access inserted objects from an already committed \(typeName(self))."
)
return self.context.insertedObjects
}
/**
Returns all pending `NSManagedObject`s of the specified type that were inserted to the transaction. This method should not be called after the `commit()` method was called.
- parameter entity: the `NSManagedObject` subclass to filter
- returns: a `Set` of pending `NSManagedObject`s of the specified type that were inserted to the transaction.
*/
public func insertedObjects<T: NSManagedObject>(entity: T.Type) -> Set<T> {
CoreStore.assert(
self.transactionQueue.isCurrentExecutionContext(),
"Attempted to access inserted objects from a \(typeName(self)) outside its designated queue."
)
CoreStore.assert(
!self.isCommitted,
"Attempted to access inserted objects from an already committed \(typeName(self))."
)
return Set(self.context.insertedObjects.flatMap { $0 as? T })
}
/**
Returns all pending `NSManagedObjectID`s that were inserted to the transaction. This method should not be called after the `commit()` method was called.
- returns: a `Set` of pending `NSManagedObjectID`s that were inserted to the transaction.
*/
public func insertedObjectIDs() -> Set<NSManagedObjectID> {
CoreStore.assert(
self.transactionQueue.isCurrentExecutionContext(),
"Attempted to access inserted object IDs from a \(typeName(self)) outside its designated queue."
)
CoreStore.assert(
!self.isCommitted,
"Attempted to access inserted objects IDs from an already committed \(typeName(self))."
)
return Set(self.context.insertedObjects.map { $0.objectID })
}
/**
Returns all pending `NSManagedObjectID`s of the specified type that were inserted to the transaction. This method should not be called after the `commit()` method was called.
- parameter entity: the `NSManagedObject` subclass to filter
- returns: a `Set` of pending `NSManagedObjectID`s of the specified type that were inserted to the transaction.
*/
public func insertedObjectIDs<T: NSManagedObject>(entity: T.Type) -> Set<NSManagedObjectID> {
CoreStore.assert(
self.transactionQueue.isCurrentExecutionContext(),
"Attempted to access inserted object IDs from a \(typeName(self)) outside its designated queue."
)
CoreStore.assert(
!self.isCommitted,
"Attempted to access inserted objects IDs from an already committed \(typeName(self))."
)
return Set(self.context.insertedObjects.flatMap { $0 as? T }.map { $0.objectID })
}
/**
Returns all pending `NSManagedObject`s that were updated in the transaction. This method should not be called after the `commit()` method was called.
- returns: a `Set` of pending `NSManagedObject`s that were updated to the transaction.
*/
public func updatedObjects() -> Set<NSManagedObject> {
CoreStore.assert(
self.transactionQueue.isCurrentExecutionContext(),
"Attempted to access updated objects from a \(typeName(self)) outside its designated queue."
)
CoreStore.assert(
!self.isCommitted,
"Attempted to access updated objects from an already committed \(typeName(self))."
)
return self.context.updatedObjects
}
/**
Returns all pending `NSManagedObject`s of the specified type that were updated in the transaction. This method should not be called after the `commit()` method was called.
- parameter entity: the `NSManagedObject` subclass to filter
- returns: a `Set` of pending `NSManagedObject`s of the specified type that were updated in the transaction.
*/
public func updatedObjects<T: NSManagedObject>(entity: T.Type) -> Set<T> {
CoreStore.assert(
self.transactionQueue.isCurrentExecutionContext(),
"Attempted to access updated objects from a \(typeName(self)) outside its designated queue."
)
CoreStore.assert(
!self.isCommitted,
"Attempted to access updated objects from an already committed \(typeName(self))."
)
return Set(self.context.updatedObjects.flatMap { $0 as? T })
}
/**
Returns all pending `NSManagedObjectID`s that were updated in the transaction. This method should not be called after the `commit()` method was called.
- returns: a `Set` of pending `NSManagedObjectID`s that were updated in the transaction.
*/
public func updatedObjectIDs() -> Set<NSManagedObjectID> {
CoreStore.assert(
self.transactionQueue.isCurrentExecutionContext(),
"Attempted to access updated object IDs from a \(typeName(self)) outside its designated queue."
)
CoreStore.assert(
!self.isCommitted,
"Attempted to access updated object IDs from an already committed \(typeName(self))."
)
return Set(self.context.updatedObjects.map { $0.objectID })
}
/**
Returns all pending `NSManagedObjectID`s of the specified type that were updated in the transaction. This method should not be called after the `commit()` method was called.
- parameter entity: the `NSManagedObject` subclass to filter
- returns: a `Set` of pending `NSManagedObjectID`s of the specified type that were updated in the transaction.
*/
public func updatedObjectIDs<T: NSManagedObject>(entity: T.Type) -> Set<NSManagedObjectID> {
CoreStore.assert(
self.transactionQueue.isCurrentExecutionContext(),
"Attempted to access updated object IDs from a \(typeName(self)) outside its designated queue."
)
CoreStore.assert(
!self.isCommitted,
"Attempted to access updated object IDs from an already committed \(typeName(self))."
)
return Set(self.context.updatedObjects.flatMap { $0 as? T }.map { $0.objectID })
}
/**
Returns all pending `NSManagedObject`s that were deleted from the transaction. This method should not be called after the `commit()` method was called.
- returns: a `Set` of pending `NSManagedObject`s that were deleted from the transaction.
*/
public func deletedObjects() -> Set<NSManagedObject> {
CoreStore.assert(
self.transactionQueue.isCurrentExecutionContext(),
"Attempted to access deleted objects from a \(typeName(self)) outside its designated queue."
)
CoreStore.assert(
!self.isCommitted,
"Attempted to access deleted objects from an already committed \(typeName(self))."
)
return self.context.deletedObjects
}
/**
Returns all pending `NSManagedObject`s of the specified type that were deleted from the transaction. This method should not be called after the `commit()` method was called.
- parameter entity: the `NSManagedObject` subclass to filter
- returns: a `Set` of pending `NSManagedObject`s of the specified type that were deleted from the transaction.
*/
public func deletedObjects<T: NSManagedObject>(entity: T.Type) -> Set<T> {
CoreStore.assert(
self.transactionQueue.isCurrentExecutionContext(),
"Attempted to access deleted objects from a \(typeName(self)) outside its designated queue."
)
CoreStore.assert(
!self.isCommitted,
"Attempted to access deleted objects from an already committed \(typeName(self))."
)
return Set(self.context.deletedObjects.flatMap { $0 as? T })
}
/**
Returns all pending `NSManagedObjectID`s of the specified type that were deleted from the transaction. This method should not be called after the `commit()` method was called.
- parameter entity: the `NSManagedObject` subclass to filter
- returns: a `Set` of pending `NSManagedObjectID`s of the specified type that were deleted from the transaction.
*/
public func deletedObjectIDs() -> Set<NSManagedObjectID> {
CoreStore.assert(
self.transactionQueue.isCurrentExecutionContext(),
"Attempted to access deleted object IDs from a \(typeName(self)) outside its designated queue."
)
CoreStore.assert(
!self.isCommitted,
"Attempted to access deleted object IDs from an already committed \(typeName(self))."
)
return Set(self.context.deletedObjects.map { $0.objectID })
}
/**
Returns all pending `NSManagedObjectID`s of the specified type that were deleted from the transaction. This method should not be called after the `commit()` method was called.
- parameter entity: the `NSManagedObject` subclass to filter
- returns: a `Set` of pending `NSManagedObjectID`s of the specified type that were deleted from the transaction.
*/
public func deletedObjectIDs<T: NSManagedObject>(entity: T.Type) -> Set<NSManagedObjectID> {
CoreStore.assert(
self.transactionQueue.isCurrentExecutionContext(),
"Attempted to access deleted object IDs from a \(typeName(self)) outside its designated queue."
)
CoreStore.assert(
!self.isCommitted,
"Attempted to access deleted object IDs from an already committed \(typeName(self))."
)
return Set(self.context.deletedObjects.flatMap { $0 as? T }.map { $0.objectID })
}
// MARK: Internal
internal let context: NSManagedObjectContext