1/* 2 * Copyright (C) 2007, 2013 Apple Inc. All rights reserved. 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions 6 * are met: 7 * 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. Neither the name of Apple Computer, Inc. ("Apple") nor the names of 14 * its contributors may be used to endorse or promote products derived 15 * from this software without specific prior written permission. 16 * 17 * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY 18 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 19 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 20 * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY 21 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 22 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 23 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND 24 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27 */ 28 29#ifndef SQLTransaction_h 30#define SQLTransaction_h 31 32#if ENABLE(SQL_DATABASE) 33 34#include "AbstractSQLTransaction.h" 35#include "SQLCallbackWrapper.h" 36#include "SQLStatement.h" 37#include "SQLTransactionStateMachine.h" 38#include <wtf/PassRefPtr.h> 39#include <wtf/RefPtr.h> 40 41namespace WebCore { 42 43class AbstractSQLTransactionBackend; 44class Database; 45class SQLError; 46class SQLStatementCallback; 47class SQLStatementErrorCallback; 48class SQLTransactionCallback; 49class SQLTransactionErrorCallback; 50class SQLValue; 51class VoidCallback; 52 53class SQLTransaction : public SQLTransactionStateMachine<SQLTransaction>, public AbstractSQLTransaction { 54public: 55 static PassRefPtr<SQLTransaction> create(Database*, PassRefPtr<SQLTransactionCallback>, 56 PassRefPtr<VoidCallback> successCallback, PassRefPtr<SQLTransactionErrorCallback>, 57 bool readOnly); 58 59 void performPendingCallback(); 60 61 void executeSQL(const String& sqlStatement, const Vector<SQLValue>& arguments, 62 PassRefPtr<SQLStatementCallback>, PassRefPtr<SQLStatementErrorCallback>, ExceptionCode&); 63 64 Database* database() { return m_database.get(); } 65 66private: 67 SQLTransaction(Database*, PassRefPtr<SQLTransactionCallback>, 68 PassRefPtr<VoidCallback> successCallback, PassRefPtr<SQLTransactionErrorCallback>, 69 bool readOnly); 70 71 void clearCallbackWrappers(); 72 73 // APIs called from the backend published via AbstractSQLTransaction: 74 virtual void requestTransitToState(SQLTransactionState) OVERRIDE; 75 virtual bool hasCallback() const OVERRIDE; 76 virtual bool hasSuccessCallback() const OVERRIDE; 77 virtual bool hasErrorCallback() const OVERRIDE; 78 virtual void setBackend(AbstractSQLTransactionBackend*) OVERRIDE; 79 80 // State Machine functions: 81 virtual StateFunction stateFunctionFor(SQLTransactionState) OVERRIDE; 82 bool computeNextStateAndCleanupIfNeeded(); 83 84 // State functions: 85 SQLTransactionState deliverTransactionCallback(); 86 SQLTransactionState deliverTransactionErrorCallback(); 87 SQLTransactionState deliverStatementCallback(); 88 SQLTransactionState deliverQuotaIncreaseCallback(); 89 SQLTransactionState deliverSuccessCallback(); 90 91 SQLTransactionState unreachableState(); 92 SQLTransactionState sendToBackendState(); 93 94 SQLTransactionState nextStateForTransactionError(); 95 96 RefPtr<Database> m_database; 97 RefPtr<AbstractSQLTransactionBackend> m_backend; 98 SQLCallbackWrapper<SQLTransactionCallback> m_callbackWrapper; 99 SQLCallbackWrapper<VoidCallback> m_successCallbackWrapper; 100 SQLCallbackWrapper<SQLTransactionErrorCallback> m_errorCallbackWrapper; 101 102 bool m_executeSqlAllowed; 103 RefPtr<SQLError> m_transactionError; 104 105 bool m_readOnly; 106}; 107 108} // namespace WebCore 109 110#endif 111 112#endif // SQLTransaction_h 113