mirror of
https://github.com/firebase/firebase-ios-sdk
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67 lines
2.5 KiB
Objective-C
67 lines
2.5 KiB
Objective-C
/*
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* Copyright 2017 Google
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#import "FirebaseDatabase/Sources/Core/Operation/FAckUserWrite.h"
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#import "FirebaseDatabase/Sources/Core/Operation/FOperationSource.h"
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#import "FirebaseDatabase/Sources/Core/Utilities/FImmutableTree.h"
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#import "FirebaseDatabase/Sources/Core/Utilities/FPath.h"
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@implementation FAckUserWrite
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- (id)initWithPath:(FPath *)operationPath
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affectedTree:(FImmutableTree *)tree
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revert:(BOOL)shouldRevert {
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self = [super init];
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if (self) {
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self->_source = [FOperationSource userInstance];
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self->_type = FOperationTypeAckUserWrite;
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self->_path = operationPath;
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self->_affectedTree = tree;
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self->_revert = shouldRevert;
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}
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return self;
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}
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- (FAckUserWrite *)operationForChild:(NSString *)childKey {
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if (![self.path isEmpty]) {
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NSAssert([self.path.getFront isEqualToString:childKey],
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@"operationForChild called for unrelated child.");
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return [[FAckUserWrite alloc] initWithPath:[self.path popFront]
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affectedTree:self.affectedTree
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revert:self.revert];
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} else if (self.affectedTree.value != nil) {
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NSAssert(self.affectedTree.children.isEmpty,
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@"affectedTree should not have overlapping affected paths.");
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// All child locations are affected as well; just return same operation.
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return self;
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} else {
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FImmutableTree *childTree =
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[self.affectedTree subtreeAtPath:[[FPath alloc] initWith:childKey]];
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return [[FAckUserWrite alloc] initWithPath:[FPath empty]
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affectedTree:childTree
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revert:self.revert];
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}
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}
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- (NSString *)description {
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return
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[NSString stringWithFormat:
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@"FAckUserWrite { path=%@, revert=%d, affectedTree=%@ }",
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self.path, self.revert, self.affectedTree];
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}
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@end
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