mirror of
https://github.com/firebase/firebase-ios-sdk
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65 lines
2.2 KiB
Objective-C
65 lines
2.2 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 <Foundation/Foundation.h>
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@class FImmutableTree;
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@protocol FNode;
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@class FPath;
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/**
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* This class holds a collection of writes that can be applied to nodes in
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* unison. It abstracts away the logic with dealing with priority writes and
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* multiple nested writes. At any given path, there is only allowed to be one
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* write modifying that path. Any write to an existing path or shadowing an
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* existing path will modify that existing write to reflect the write added.
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*/
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@interface FCompoundWrite : NSObject
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- (id)initWithWriteTree:(FImmutableTree *)tree;
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/**
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* Creates a compound write with NSDictionary from path string to object
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*/
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+ (FCompoundWrite *)compoundWriteWithValueDictionary:(NSDictionary *)dictionary;
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/**
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* Creates a compound write with NSDictionary from path string to node
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*/
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+ (FCompoundWrite *)compoundWriteWithNodeDictionary:(NSDictionary *)dictionary;
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+ (FCompoundWrite *)emptyWrite;
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- (FCompoundWrite *)addWrite:(id<FNode>)node atPath:(FPath *)path;
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- (FCompoundWrite *)addWrite:(id<FNode>)node atKey:(NSString *)key;
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- (FCompoundWrite *)addCompoundWrite:(FCompoundWrite *)node
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atPath:(FPath *)path;
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- (FCompoundWrite *)removeWriteAtPath:(FPath *)path;
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- (id<FNode>)rootWrite;
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- (BOOL)hasCompleteWriteAtPath:(FPath *)path;
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- (id<FNode>)completeNodeAtPath:(FPath *)path;
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- (NSArray *)completeChildren;
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- (NSDictionary *)childCompoundWrites;
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- (FCompoundWrite *)childCompoundWriteAtPath:(FPath *)path;
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- (id<FNode>)applyToNode:(id<FNode>)node;
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- (void)enumerateWrites:(void (^)(FPath *path, id<FNode> node,
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BOOL *stop))block;
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- (NSDictionary *)valForExport:(BOOL)exportFormat;
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- (BOOL)isEmpty;
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@end
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