Files
firebase-ios-sdk/Firestore/Source/Local/FSTLevelDBQueryCache.h
T
Greg Soltis 3cbdbf2652 Schema migrations for LevelDB (#728)
* Implement schema versions

* Style fixes

* newlines, copyrights, assumptions

* Fix nullability

* Raw ptr -> shared_ptr

* kVersionTableGlobal -> kVersionGlobalTable

* Drop utils, move into static methods

* Drop extra include

* Add a few more comments

* Move version constant into migrations file

* formatting?

* Fix comment
2018-01-30 14:36:22 -08:00

63 lines
1.7 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 "Firestore/Source/Local/FSTQueryCache.h"
#ifdef __cplusplus
#include <memory>
namespace leveldb {
class DB;
}
#endif
@class FSTLocalSerializer;
@protocol FSTGarbageCollector;
@class FSTPBTargetGlobal;
NS_ASSUME_NONNULL_BEGIN
/** Cached Queries backed by LevelDB. */
@interface FSTLevelDBQueryCache : NSObject <FSTQueryCache>
#ifdef __cplusplus
/**
* Retrieves the global singleton metadata row from the given database, if it exists.
*/
+ (nullable FSTPBTargetGlobal *)readTargetMetadataFromDB:(std::shared_ptr<leveldb::DB>)db;
#endif
- (instancetype)init NS_UNAVAILABLE;
/** The garbage collector to notify about potential garbage keys. */
@property(nonatomic, weak, readwrite, nullable) id<FSTGarbageCollector> garbageCollector;
#ifdef __cplusplus
/**
* Creates a new query cache in the given LevelDB.
*
* @param db The LevelDB in which to create the cache.
*/
- (instancetype)initWithDB:(std::shared_ptr<leveldb::DB>)db
serializer:(FSTLocalSerializer *)serializer NS_DESIGNATED_INITIALIZER;
#endif
@end
NS_ASSUME_NONNULL_END