/* * Copyright (C) 2007, 2013, 2015 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. * 3. Neither the name of Apple Inc. ("Apple") nor the names of * its contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY APPLE 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 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 "SQLTransactionStateMachine.h" #include <memory> #include <wtf/Forward.h> #include <wtf/text/WTFString.h> namespace WebCore { class Database; class OriginLock; class SQLError; class SQLiteTransaction; class SQLStatement; class SQLTransaction; class SQLTransactionWrapper; class SQLTransactionBackend : public SQLTransactionStateMachine<SQLTransactionBackend> { public: explicit SQLTransactionBackend(SQLTransaction&); ~SQLTransactionBackend(); void notifyDatabaseThreadIsShuttingDown(); // API called from the frontend published via SQLTransactionBackend: void requestTransitToState(SQLTransactionState); private: friend class SQLTransaction; void doCleanup(); // State Machine functions: StateFunction stateFunctionFor(SQLTransactionState) override; void computeNextStateAndCleanupIfNeeded(); // State functions: void acquireLock(); void openTransactionAndPreflight(); void runStatements(); void cleanupAndTerminate(); void cleanupAfterTransactionErrorCallback(); NO_RETURN_DUE_TO_ASSERT void unreachableState(); SQLTransaction& m_frontend; }; } // namespace WebCore