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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;
@class FIRDocumentSnapshot;
/**
* `FIRTransaction` provides methods to read and write data within a transaction.
*
* @see FIRFirestore#transaction:completion:
*/
NS_SWIFT_NAME(Transaction)
@interface FIRTransaction : NSObject
/** */
- (id)init __attribute__((unavailable("FIRTransaction 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 `FIRTransaction` instance. Used for chaining method calls.
*/
// clang-format off
- (FIRTransaction *)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 `FIRTransaction` instance. Used for chaining method calls.
*/
// clang-format off
- (FIRTransaction *)setData:(NSDictionary<NSString *, id> *)data
forDocument:(FIRDocumentReference *)document
merge:(BOOL)merge
NS_SWIFT_NAME(setData(_:forDocument:merge:));
// clang-format on
/**
* Writes to the document referred to by `document` and only replace the fields
* specified under `mergeFields`. Any field that is not specified in `mergeFields`
* is ignored and remains untouched. If the document doesn't yet exist,
* this method creates it and then sets the data.
*
* It is an error to include a field in `mergeFields` that does not have a corresponding
* value in the `data` dictionary.
*
* @param data An `NSDictionary` containing the fields that make up the document
* to be written.
* @param document A reference to the document whose data should be overwritten.
* @param mergeFields An `NSArray` that contains a list of `NSString` or `FIRFieldPath` elements
* specifying which fields to merge. Fields can contain dots to reference nested fields within
* the document.
* @return This `FIRTransaction` instance. Used for chaining method calls.
*/
// clang-format off
- (FIRTransaction *)setData:(NSDictionary<NSString *, id> *)data
forDocument:(FIRDocumentReference *)document
mergeFields:(NSArray<id> *)mergeFields
NS_SWIFT_NAME(setData(_:forDocument:mergeFields:));
// clang-format on
/**
* Updates fields in the document referred to by `document`.
* If the document does not exist, the transaction 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 `FIRTransaction` instance. Used for chaining method calls.
*/
// clang-format off
- (FIRTransaction *)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 `FIRTransaction` instance. Used for chaining method calls.
*/
- (FIRTransaction *)deleteDocument:(FIRDocumentReference *)document
NS_SWIFT_NAME(deleteDocument(_:));
/**
* Reads the document referenced by `document`.
*
* @param document A reference to the document to be read.
* @param error An out parameter to capture an error, if one occurred.
*/
- (FIRDocumentSnapshot *_Nullable)getDocument:(FIRDocumentReference *)document
error:(NSError *__autoreleasing *)error
NS_SWIFT_NAME(getDocument(_:));
@end
NS_ASSUME_NONNULL_END
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