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1 files changed, 53 insertions, 0 deletions

diff --git a/Firebase/Database/Persistence/FStorageEngine.h b/Firebase/Database/Persistence/FStorageEngine.h
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+++ b/Firebase/Database/Persistence/FStorageEngine.h
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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>
+
+@protocol FNode;
+@class FPruneForest;
+@class FPath;
+@class FCompoundWrite;
+@class FQuerySpec;
+@class FTrackedQuery;
+
+@protocol FStorageEngine <NSObject>
+
+- (void)close;
+
+- (void)saveUserOverwrite:(id<FNode>)node atPath:(FPath *)path writeId:(NSUInteger)writeId;
+- (void)saveUserMerge:(FCompoundWrite *)merge atPath:(FPath *)path writeId:(NSUInteger)writeId;
+- (void)removeUserWrite:(NSUInteger)writeId;
+- (void)removeAllUserWrites;
+- (NSArray *)userWrites;
+
+- (id<FNode>)serverCacheAtPath:(FPath *)path;
+- (id<FNode>)serverCacheForKeys:(NSSet *)keys atPath:(FPath *)path;
+- (void)updateServerCache:(id<FNode>)node atPath:(FPath *)path merge:(BOOL)merge;
+- (void)updateServerCacheWithMerge:(FCompoundWrite *)merge atPath:(FPath *)path;
+- (NSUInteger)serverCacheEstimatedSizeInBytes;
+
+- (void)pruneCache:(FPruneForest *)pruneForest atPath:(FPath *)path;
+
+- (NSArray *)loadTrackedQueries;
+- (void)removeTrackedQuery:(NSUInteger)queryId;
+- (void)saveTrackedQuery:(FTrackedQuery *)query;
+
+- (void)setTrackedQueryKeys:(NSSet *)keys forQueryId:(NSUInteger)queryId;
+- (void)updateTrackedQueryKeysWithAddedKeys:(NSSet *)added removedKeys:(NSSet *)removed forQueryId:(NSUInteger)queryId;
+- (NSSet *)trackedQueryKeysForQuery:(NSUInteger)queryId;
+
+
+@end