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/*
* Copyright (C) 2016 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.
*/
#ifndef SQLiteIDBBackingStore_h
#define SQLiteIDBBackingStore_h
#if ENABLE(INDEXED_DATABASE)
#include "IDBBackingStore.h"
#include "IDBDatabaseIdentifier.h"
#include "IDBDatabaseInfo.h"
#include "IDBResourceIdentifier.h"
#include "SQLiteIDBTransaction.h"
#include <JavaScriptCore/Strong.h>
#include <wtf/HashMap.h>
namespace WebCore {
class IndexKey;
class SQLiteDatabase;
namespace IDBServer {
class SQLiteIDBCursor;
class SQLiteIDBBackingStore : public IDBBackingStore {
public:
SQLiteIDBBackingStore(const IDBDatabaseIdentifier&, const String& databaseRootDirectory);
virtual ~SQLiteIDBBackingStore() override final;
virtual IDBError getOrEstablishDatabaseInfo(IDBDatabaseInfo&) override final;
virtual IDBError beginTransaction(const IDBTransactionInfo&) override final;
virtual IDBError abortTransaction(const IDBResourceIdentifier& transactionIdentifier) override final;
virtual IDBError commitTransaction(const IDBResourceIdentifier& transactionIdentifier) override final;
virtual IDBError createObjectStore(const IDBResourceIdentifier& transactionIdentifier, const IDBObjectStoreInfo&) override final;
virtual IDBError deleteObjectStore(const IDBResourceIdentifier& transactionIdentifier, uint64_t objectStoreIdentifier) override final;
virtual IDBError clearObjectStore(const IDBResourceIdentifier& transactionIdentifier, uint64_t objectStoreIdentifier) override final;
virtual IDBError createIndex(const IDBResourceIdentifier& transactionIdentifier, const IDBIndexInfo&) override final;
virtual IDBError deleteIndex(const IDBResourceIdentifier& transactionIdentifier, uint64_t objectStoreIdentifier, uint64_t indexIdentifier) override final;
virtual IDBError keyExistsInObjectStore(const IDBResourceIdentifier& transactionIdentifier, uint64_t objectStoreIdentifier, const IDBKeyData&, bool& keyExists) override final;
virtual IDBError deleteRange(const IDBResourceIdentifier& transactionIdentifier, uint64_t objectStoreIdentifier, const IDBKeyRangeData&) override final;
virtual IDBError addRecord(const IDBResourceIdentifier& transactionIdentifier, const IDBObjectStoreInfo&, const IDBKeyData&, const ThreadSafeDataBuffer& value) override final;
virtual IDBError getRecord(const IDBResourceIdentifier& transactionIdentifier, uint64_t objectStoreIdentifier, const IDBKeyRangeData&, ThreadSafeDataBuffer& outValue) override final;
virtual IDBError getIndexRecord(const IDBResourceIdentifier& transactionIdentifier, uint64_t objectStoreIdentifier, uint64_t indexIdentifier, IndexedDB::IndexRecordType, const IDBKeyRangeData&, IDBGetResult& outValue) override final;
virtual IDBError getCount(const IDBResourceIdentifier& transactionIdentifier, uint64_t objectStoreIdentifier, uint64_t indexIdentifier, const IDBKeyRangeData&, uint64_t& outCount) override final;
virtual IDBError generateKeyNumber(const IDBResourceIdentifier& transactionIdentifier, uint64_t objectStoreIdentifier, uint64_t& keyNumber) override final;
virtual IDBError revertGeneratedKeyNumber(const IDBResourceIdentifier& transactionIdentifier, uint64_t objectStoreIdentifier, uint64_t keyNumber) override final;
virtual IDBError maybeUpdateKeyGeneratorNumber(const IDBResourceIdentifier& transactionIdentifier, uint64_t objectStoreIdentifier, double newKeyNumber) override final;
virtual IDBError openCursor(const IDBResourceIdentifier& transactionIdentifier, const IDBCursorInfo&, IDBGetResult& outResult) override final;
virtual IDBError iterateCursor(const IDBResourceIdentifier& transactionIdentifier, const IDBResourceIdentifier& cursorIdentifier, const IDBKeyData&, uint32_t count, IDBGetResult& outResult) override final;
virtual IDBObjectStoreInfo* infoForObjectStore(uint64_t objectStoreIdentifier) override final;
virtual void deleteBackingStore() override final;
virtual bool supportsSimultaneousTransactions() override final { return false; }
virtual bool isEphemeral() override final { return false; }
void unregisterCursor(SQLiteIDBCursor&);
private:
String filenameForDatabaseName() const;
String fullDatabaseDirectory() const;
String fullDatabasePath() const;
bool ensureValidRecordsTable();
bool ensureValidIndexRecordsTable();
std::unique_ptr<IDBDatabaseInfo> createAndPopulateInitialDatabaseInfo();
std::unique_ptr<IDBDatabaseInfo> extractExistingDatabaseInfo();
IDBError deleteRecord(SQLiteIDBTransaction&, int64_t objectStoreID, const IDBKeyData&);
IDBError uncheckedGetKeyGeneratorValue(int64_t objectStoreID, uint64_t& outValue);
IDBError uncheckedSetKeyGeneratorValue(int64_t objectStoreID, uint64_t value);
IDBError updateAllIndexesForAddRecord(const IDBObjectStoreInfo&, const IDBKeyData&, const ThreadSafeDataBuffer& value);
IDBError updateOneIndexForAddRecord(const IDBIndexInfo&, const IDBKeyData&, const ThreadSafeDataBuffer& value);
IDBError uncheckedPutIndexKey(const IDBIndexInfo&, const IDBKeyData& keyValue, const IndexKey&);
IDBError uncheckedPutIndexRecord(int64_t objectStoreID, int64_t indexID, const IDBKeyData& keyValue, const IDBKeyData& indexKey);
IDBError uncheckedHasIndexRecord(const IDBIndexInfo&, const IDBKeyData&, bool& hasRecord);
JSC::VM& vm();
JSC::JSGlobalObject& globalObject();
void initializeVM();
IDBDatabaseIdentifier m_identifier;
std::unique_ptr<IDBDatabaseInfo> m_databaseInfo;
std::unique_ptr<IDBDatabaseInfo> m_originalDatabaseInfoBeforeVersionChange;
std::unique_ptr<SQLiteDatabase> m_sqliteDB;
HashMap<IDBResourceIdentifier, std::unique_ptr<SQLiteIDBTransaction>> m_transactions;
HashMap<IDBResourceIdentifier, SQLiteIDBCursor*> m_cursors;
String m_absoluteDatabaseDirectory;
RefPtr<JSC::VM> m_vm;
JSC::Strong<JSC::JSGlobalObject> m_globalObject;
};
} // namespace IDBServer
} // namespace WebCore
#endif // ENABLE(INDEXED_DATABASE)
#endif // SQLiteIDBBackingStore_h
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