mirror of
https://github.com/firebase/firebase-ios-sdk
synced 2026-11-10 22:45:59 +05:45
40 lines
1.4 KiB
Objective-C
40 lines
1.4 KiB
Objective-C
/*
|
|
* 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 "FirebaseDatabase/Sources/Snapshot/FNode.h"
|
|
|
|
/**
|
|
* Applies a merge of a snap for a given interval of paths.
|
|
* Each leaf in the current node which the relative path lies *after* (the
|
|
* optional) start and lies *before or at* (the optional) end will be deleted.
|
|
* Each leaf in snap that lies in the interval will be added to the resulting
|
|
* node. Nodes outside of the range are ignored. nil for start and end are
|
|
* sentinel values that represent -infinity and +infinity respectively (aka
|
|
* includes any path). Priorities of children nodes are treated as leaf children
|
|
* of that node.
|
|
*/
|
|
@interface FRangeMerge : NSObject
|
|
|
|
- (instancetype)initWithStart:(FPath *)start
|
|
end:(FPath *)end
|
|
updates:(id<FNode>)updates;
|
|
|
|
- (id<FNode>)applyToNode:(id<FNode>)node;
|
|
|
|
@end
|