An operation that fetches changes to the database.
SDKs
- iOS 10.0+
- macOS 10.12+
- Mac Catalyst 13.0+
- tvOS 10.0+
- watchOS 3.0+
Framework
- Cloud
Kit
Declaration
@interface CKFetchDatabaseChangesOperation : CKDatabaseClassCKFetch
CKFetch
Topics
Creating an Operation
- initInitializes and returns an operation object configured with the previous change token.
Processing the Operation Results
changeThe block to execute when the change token has changed.
fetchThe block to execute when the operation completes.
recordThe block that processes a single record zone change.
recordThe block that processes a single record zone deletion.
recordThe block that processes a single record zone purge.
Configuring the Operation Object
fetchConfiguration setting to control whether this operation makes repeated calls to the server.
previousThe change token from a previous fetch operation.
resultsThe maximum number of results to fetch with this operation.