mirror of
https://github.com/firebase/firebase-ios-sdk
synced 2026-11-10 22:45:59 +05:45
Gil
756da9c10c
This is a force fix for potential existence filter mismatches caused by firebase/firebase-ios-sdk#1548 The essential problem is that when resuming a query, the server is allowed to forget deletes. If the number of incorrectly synthesized deletes matches the number of server-forgotten deletes then the existence filter can give a false positive, preventing the cache from self healing. Dropping the query cache clears any client-side resume token which prevents a false positive existence filter mismatch. Note that the remote document cache and mutation queues are unaffected so any cached documents that do exist will still work while offline https://github.com/firebase/firebase-js-sdk/pull/1019
50 lines
1.4 KiB
Objective-C
50 lines
1.4 KiB
Objective-C
/*
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* Copyright 2018 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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#include <memory>
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#include "Firestore/core/src/firebase/firestore/local/leveldb_transaction.h"
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#include "leveldb/db.h"
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NS_ASSUME_NONNULL_BEGIN
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typedef int32_t FSTLevelDBSchemaVersion;
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@interface FSTLevelDBMigrations : NSObject
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/**
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* Returns the current version of the schema for the given database
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*/
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+ (FSTLevelDBSchemaVersion)schemaVersionWithTransaction:
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(firebase::firestore::local::LevelDbTransaction *)transaction;
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/**
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* Runs any migrations needed to bring the given database up to the current schema version
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*/
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+ (void)runMigrationsWithDatabase:(leveldb::DB *)database;
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/**
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* Runs any migrations needed to bring the given database up to the given schema version
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*/
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+ (void)runMigrationsWithDatabase:(leveldb::DB *)database
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upToVersion:(FSTLevelDBSchemaVersion)version;
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@end
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NS_ASSUME_NONNULL_END
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