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/*
* Copyright (C) 2015-2021 Apple Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
* THE POSSIBILITY OF SUCH DAMAGE.
*/
#pragma once
#include "IDBBackingStore.h"
#include "IDBDatabaseIdentifier.h"
#include "IDBIndexIdentifier.h"
#include "IDBObjectStoreIdentifier.h"
#include "IDBResourceIdentifier.h"
#include "IndexKey.h"
#include "MemoryBackingStoreTransaction.h"
#include <wtf/HashMap.h>
#include <wtf/TZoneMalloc.h>
namespace WebCore {
namespace IDBServer {
class MemoryObjectStore;
class MemoryIDBBackingStore final : public IDBBackingStore {
WTF_MAKE_TZONE_ALLOCATED_EXPORT(MemoryIDBBackingStore, WEBCORE_EXPORT);
WTF_OVERRIDE_DELETE_FOR_CHECKED_PTR(MemoryIDBBackingStore);
public:
WEBCORE_EXPORT explicit MemoryIDBBackingStore(const IDBDatabaseIdentifier&);
WEBCORE_EXPORT ~MemoryIDBBackingStore();
IDBError getOrEstablishDatabaseInfo(IDBDatabaseInfo&) final;
uint64_t databaseVersion() final;
void setDatabaseInfo(const IDBDatabaseInfo&);
bool hasObjectStore(IDBObjectStoreIdentifier objectStoreIdentifier) { return !!infoForObjectStore(objectStoreIdentifier); }
MemoryObjectStore* objectStoreForName(const String& name) const;
void renameObjectStoreForVersionChangeAbort(MemoryObjectStore&, const String& oldName);
void removeObjectStoreForVersionChangeAbort(MemoryObjectStore&);
void restoreObjectStoreForVersionChangeAbort(Ref<MemoryObjectStore>&&);
void handleLowMemoryWarning() final { };
private:
IDBError beginTransaction(const IDBTransactionInfo&) final;
IDBError abortTransaction(const IDBResourceIdentifier& transactionIdentifier) final;
IDBError commitTransaction(const IDBResourceIdentifier& transactionIdentifier) final;
IDBError createObjectStore(const IDBResourceIdentifier& transactionIdentifier, const IDBObjectStoreInfo&) final;
IDBError deleteObjectStore(const IDBResourceIdentifier& transactionIdentifier, IDBObjectStoreIdentifier) final;
IDBError renameObjectStore(const IDBResourceIdentifier& transactionIdentifier, IDBObjectStoreIdentifier, const String& newName) final;
IDBError clearObjectStore(const IDBResourceIdentifier& transactionIdentifier, IDBObjectStoreIdentifier) final;
IDBError createIndex(const IDBResourceIdentifier& transactionIdentifier, const IDBIndexInfo&) final;
IDBError deleteIndex(const IDBResourceIdentifier& transactionIdentifier, IDBObjectStoreIdentifier, IDBIndexIdentifier) final;
IDBError renameIndex(const IDBResourceIdentifier& transactionIdentifier, IDBObjectStoreIdentifier, IDBIndexIdentifier, const String& newName) final;
IDBError keyExistsInObjectStore(const IDBResourceIdentifier& transactionIdentifier, IDBObjectStoreIdentifier, const IDBKeyData&, bool& keyExists) final;
IDBError deleteRange(const IDBResourceIdentifier& transactionIdentifier, IDBObjectStoreIdentifier, const IDBKeyRangeData&) final;
IDBError addRecord(const IDBResourceIdentifier& transactionIdentifier, const IDBObjectStoreInfo&, const IDBKeyData&, const IndexIDToIndexKeyMap&, const IDBValue&) final;
IDBError getRecord(const IDBResourceIdentifier& transactionIdentifier, IDBObjectStoreIdentifier, const IDBKeyRangeData&, IDBGetRecordDataType, IDBGetResult& outValue) final;
IDBError getAllRecords(const IDBResourceIdentifier& transactionIdentifier, const IDBGetAllRecordsData&, IDBGetAllResult& outValue) final;
IDBError getIndexRecord(const IDBResourceIdentifier& transactionIdentifier, IDBObjectStoreIdentifier, IDBIndexIdentifier, IndexedDB::IndexRecordType, const IDBKeyRangeData&, IDBGetResult& outValue) final;
IDBError getCount(const IDBResourceIdentifier& transactionIdentifier, IDBObjectStoreIdentifier, std::optional<IDBIndexIdentifier>, const IDBKeyRangeData&, uint64_t& outCount) final;
IDBError generateKeyNumber(const IDBResourceIdentifier& transactionIdentifier, IDBObjectStoreIdentifier, uint64_t& keyNumber) final;
IDBError revertGeneratedKeyNumber(const IDBResourceIdentifier& transactionIdentifier, IDBObjectStoreIdentifier, uint64_t keyNumber) final;
IDBError maybeUpdateKeyGeneratorNumber(const IDBResourceIdentifier& transactionIdentifier, IDBObjectStoreIdentifier, double newKeyNumber) final;
IDBError openCursor(const IDBResourceIdentifier& transactionIdentifier, const IDBCursorInfo&, IDBGetResult& outResult) final;
IDBError iterateCursor(const IDBResourceIdentifier& transactionIdentifier, const IDBResourceIdentifier& cursorIdentifier, const IDBIterateCursorData&, IDBGetResult& outResult) final;
IDBObjectStoreInfo* infoForObjectStore(IDBObjectStoreIdentifier) final;
void deleteBackingStore() final;
bool supportsSimultaneousReadWriteTransactions() final { return true; }
bool isEphemeral() final { return true; }
String fullDatabasePath() const final { return nullString(); }
bool hasTransaction(const IDBResourceIdentifier& identifier) const final { return m_transactions.contains(identifier); }
RefPtr<MemoryObjectStore> takeObjectStoreByIdentifier(IDBObjectStoreIdentifier);
void close() final;
void registerObjectStore(Ref<MemoryObjectStore>&&);
void unregisterObjectStore(MemoryObjectStore&);
IDBDatabaseIdentifier m_identifier;
std::unique_ptr<IDBDatabaseInfo> m_databaseInfo;
HashMap<IDBResourceIdentifier, Ref<MemoryBackingStoreTransaction>> m_transactions;
HashMap<IDBObjectStoreIdentifier, RefPtr<MemoryObjectStore>> m_objectStoresByIdentifier;
HashMap<String, RefPtr<MemoryObjectStore>> m_objectStoresByName;
};
} // namespace IDBServer
} // namespace WebCore
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