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/core/v8/ScriptWrappable.h" 33 #include "modules/webdatabase/SQLStatement.h" 34 #include "modules/webdatabase/SQLTransactionStateMachine.h" 35 #include "platform/heap/Handle.h" 36 #include "wtf/PassRefPtr.h" 37 #include "wtf/RefPtr.h" 38 39 namespace blink { 40 41 class Database; 42 class ExceptionState; 43 class SQLErrorData; 44 class SQLStatementCallback; 45 class SQLStatementErrorCallback; 46 class SQLTransactionBackend; 47 class SQLTransactionCallback; 48 class SQLTransactionErrorCallback; 49 class SQLValue; 50 class VoidCallback; 51 52 class SQLTransaction FINAL 53 : public ThreadSafeRefCountedWillBeGarbageCollectedFinalized<SQLTransaction> 54 , public SQLTransactionStateMachine<SQLTransaction> 55 , public ScriptWrappable { 56 DEFINE_WRAPPERTYPEINFO(); 57 public: 58 static PassRefPtrWillBeRawPtr<SQLTransaction> create(Database*, SQLTransactionCallback*, 59 VoidCallback* successCallback, SQLTransactionErrorCallback*, 60 bool readOnly); 61 ~SQLTransaction(); 62 void trace(Visitor*); 63 64 void performPendingCallback(); 65 66 void executeSQL(const String& sqlStatement, const Vector<SQLValue>& arguments, 67 SQLStatementCallback*, SQLStatementErrorCallback*, ExceptionState&); 68 database()69 Database* database() { return m_database.get(); } 70 71 SQLTransactionErrorCallback* releaseErrorCallback(); 72 73 // APIs called from the backend published: 74 void requestTransitToState(SQLTransactionState); 75 bool hasCallback() const; 76 bool hasSuccessCallback() const; 77 bool hasErrorCallback() const; 78 void setBackend(SQLTransactionBackend*); 79 80 private: 81 SQLTransaction(Database*, SQLTransactionCallback*, 82 VoidCallback* successCallback, SQLTransactionErrorCallback*, 83 bool readOnly); 84 85 void clearCallbacks(); 86 87 // State Machine functions: 88 virtual StateFunction stateFunctionFor(SQLTransactionState) OVERRIDE; 89 bool computeNextStateAndCleanupIfNeeded(); 90 91 // State functions: 92 SQLTransactionState deliverTransactionCallback(); 93 SQLTransactionState deliverTransactionErrorCallback(); 94 SQLTransactionState deliverStatementCallback(); 95 SQLTransactionState deliverQuotaIncreaseCallback(); 96 SQLTransactionState deliverSuccessCallback(); 97 98 SQLTransactionState unreachableState(); 99 SQLTransactionState sendToBackendState(); 100 101 SQLTransactionState nextStateForTransactionError(); 102 103 RefPtrWillBeMember<Database> m_database; 104 RefPtrWillBeMember<SQLTransactionBackend> m_backend; 105 CrossThreadPersistentWillBeMember<SQLTransactionCallback> m_callback; 106 CrossThreadPersistentWillBeMember<VoidCallback> m_successCallback; 107 CrossThreadPersistentWillBeMember<SQLTransactionErrorCallback> m_errorCallback; 108 109 bool m_executeSqlAllowed; 110 OwnPtr<SQLErrorData> m_transactionError; 111 112 bool m_readOnly; 113 }; 114 115 } // namespace blink 116 117 #endif // SQLTransaction_h 118