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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>
#import "Firestore/Source/Model/FSTDocumentKeySet.h"
@class FSTDocumentSet;
@class FSTMutation;
@class FSTQuery;
@class FSTRemoteEvent;
@class FSTViewSnapshot;
NS_ASSUME_NONNULL_BEGIN
/**
* A set of changes to what documents are currently in view and out of view for a given query.
* These changes are sent to the LocalStore by the View (via the SyncEngine) and are used to pin /
* unpin documents as appropriate.
*/
@interface FSTLocalViewChanges : NSObject
+ (instancetype)changesForQuery:(FSTQuery *)query
addedKeys:(FSTDocumentKeySet *)addedKeys
removedKeys:(FSTDocumentKeySet *)removedKeys;
+ (instancetype)changesForViewSnapshot:(FSTViewSnapshot *)viewSnapshot;
- (id)init NS_UNAVAILABLE;
@property(nonatomic, strong, readonly) FSTQuery *query;
@property(nonatomic, strong) FSTDocumentKeySet *addedKeys;
@property(nonatomic, strong) FSTDocumentKeySet *removedKeys;
@end
NS_ASSUME_NONNULL_END
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