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/*
* Copyright 2017 Google
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#import <Foundation/Foundation.h>
NS_ASSUME_NONNULL_BEGIN
@class FIRDocumentReference;
/**
* A write batch is used to perform multiple writes as a single atomic unit.
*
* A WriteBatch object can be acquired by calling [FIRFirestore batch]. It provides methods for
* adding writes to the write batch. None of the writes will be committed (or visible locally)
* until [FIRWriteBatch commit] is called.
*
* Unlike transactions, write batches are persisted offline and therefore are preferable when you
* don't need to condition your writes on read data.
*/
NS_SWIFT_NAME(WriteBatch)
@interface FIRWriteBatch : NSObject
/** :nodoc: */
- (id)init __attribute__((unavailable("FIRWriteBatch cannot be created directly.")));
/**
* Writes to the document referred to by `document`. If the document doesn't yet exist,
* this method creates it and then sets the data. If the document exists, this method overwrites
* the document data with the new values.
*
* @param data An `NSDictionary` that contains the fields and data to write to the document.
* @param document A reference to the document whose data should be overwritten.
* @return This `FIRWriteBatch` instance. Used for chaining method calls.
*/
// clang-format off
- (FIRWriteBatch *)setData:(NSDictionary<NSString *, id> *)data
forDocument:(FIRDocumentReference *)document NS_SWIFT_NAME(setData(_:forDocument:));
// clang-format on
/**
* Writes to the document referred to by `document`. If the document doesn't yet exist,
* this method creates it and then sets the data. If you pass `merge:YES`, the provided data will be
* merged into any existing document.
*
* @param data An `NSDictionary` that contains the fields and data to write to the document.
* @param document A reference to the document whose data should be overwritten.
* @param merge Whether to merge the provided data into any existing document.
* @return This `FIRWriteBatch` instance. Used for chaining method calls.
*/
// clang-format off
- (FIRWriteBatch *)setData:(NSDictionary<NSString *, id> *)data
forDocument:(FIRDocumentReference *)document
merge:(BOOL)merge
NS_SWIFT_NAME(setData(_:forDocument:merge:));
// clang-format on
/**
* Updates fields in the document referred to by `document`.
* If document does not exist, the write batch will fail.
*
* @param fields An `NSDictionary` containing the fields (expressed as an `NSString` or
* `FIRFieldPath`) and values with which to update the document.
* @param document A reference to the document whose data should be updated.
* @return This `FIRWriteBatch` instance. Used for chaining method calls.
*/
// clang-format off
- (FIRWriteBatch *)updateData:(NSDictionary<id, id> *)fields
forDocument:(FIRDocumentReference *)document
NS_SWIFT_NAME(updateData(_:forDocument:));
// clang-format on
/**
* Deletes the document referred to by `document`.
*
* @param document A reference to the document that should be deleted.
* @return This `FIRWriteBatch` instance. Used for chaining method calls.
*/
- (FIRWriteBatch *)deleteDocument:(FIRDocumentReference *)document
NS_SWIFT_NAME(deleteDocument(_:));
/**
* Commits all of the writes in this write batch as a single atomic unit.
*/
- (void)commit;
/**
* Commits all of the writes in this write batch as a single atomic unit.
*
* @param completion A block to be called once all of the writes in the batch have been
* successfully written to the backend as an atomic unit. This block will only execute
* when the client is online and the commit has completed against the server. The
* completion handler will not be called when the device is offline, though local
* changes will be visible immediately.
*/
- (void)commitWithCompletion:(nullable void (^)(NSError *_Nullable error))completion;
@end
NS_ASSUME_NONNULL_END
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