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 #include "bindings/v8/ScriptWrappable.h" 33 #include "modules/webdatabase/AbstractSQLTransaction.h" 34 #include "modules/webdatabase/SQLCallbackWrapper.h" 35 #include "modules/webdatabase/SQLStatement.h" 36 #include "modules/webdatabase/SQLTransactionStateMachine.h" 37 #include "wtf/PassRefPtr.h" 38 #include "wtf/RefPtr.h" 39 40 namespace WebCore { 41 42 class AbstractSQLTransactionBackend; 43 class Database; 44 class ExceptionState; 45 class SQLError; 46 class SQLStatementCallback; 47 class SQLStatementErrorCallback; 48 class SQLTransactionCallback; 49 class SQLTransactionErrorCallback; 50 class SQLValue; 51 class VoidCallback; 52 53 class SQLTransaction : public SQLTransactionStateMachine<SQLTransaction>, public AbstractSQLTransaction, public ScriptWrappable { 54 public: 55 static PassRefPtr<SQLTransaction> create(Database*, PassOwnPtr<SQLTransactionCallback>, 56 PassOwnPtr<VoidCallback> successCallback, PassOwnPtr<SQLTransactionErrorCallback>, 57 bool readOnly); 58 59 void performPendingCallback(); 60 61 void executeSQL(const String& sqlStatement, const Vector<SQLValue>& arguments, 62 PassOwnPtr<SQLStatementCallback>, PassOwnPtr<SQLStatementErrorCallback>, ExceptionState&); 63 database()64 Database* database() { return m_database.get(); } 65 66 PassOwnPtr<SQLTransactionErrorCallback> releaseErrorCallback(); 67 68 private: 69 SQLTransaction(Database*, PassOwnPtr<SQLTransactionCallback>, 70 PassOwnPtr<VoidCallback> successCallback, PassOwnPtr<SQLTransactionErrorCallback>, 71 bool readOnly); 72 73 void clearCallbackWrappers(); 74 75 // APIs called from the backend published via AbstractSQLTransaction: 76 virtual void requestTransitToState(SQLTransactionState) OVERRIDE; 77 virtual bool hasCallback() const OVERRIDE; 78 virtual bool hasSuccessCallback() const OVERRIDE; 79 virtual bool hasErrorCallback() const OVERRIDE; 80 virtual void setBackend(AbstractSQLTransactionBackend*) OVERRIDE; 81 82 // State Machine functions: 83 virtual StateFunction stateFunctionFor(SQLTransactionState) OVERRIDE; 84 bool computeNextStateAndCleanupIfNeeded(); 85 86 // State functions: 87 SQLTransactionState deliverTransactionCallback(); 88 SQLTransactionState deliverTransactionErrorCallback(); 89 SQLTransactionState deliverStatementCallback(); 90 SQLTransactionState deliverQuotaIncreaseCallback(); 91 SQLTransactionState deliverSuccessCallback(); 92 93 SQLTransactionState unreachableState(); 94 SQLTransactionState sendToBackendState(); 95 96 SQLTransactionState nextStateForTransactionError(); 97 98 RefPtr<Database> m_database; 99 RefPtr<AbstractSQLTransactionBackend> m_backend; 100 SQLCallbackWrapper<SQLTransactionCallback> m_callbackWrapper; 101 SQLCallbackWrapper<VoidCallback> m_successCallbackWrapper; 102 SQLCallbackWrapper<SQLTransactionErrorCallback> m_errorCallbackWrapper; 103 104 bool m_executeSqlAllowed; 105 RefPtr<SQLError> m_transactionError; 106 107 bool m_readOnly; 108 }; 109 110 } // namespace WebCore 111 112 #endif // SQLTransaction_h 113