1 /* 2 * Copyright (C) 2010 Google 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 * 14 * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY 15 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 16 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 17 * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY 18 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 19 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 20 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND 21 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 23 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 24 */ 25 26 #ifndef IDBAny_h 27 #define IDBAny_h 28 29 #if ENABLE(INDEXED_DATABASE) 30 31 #include <wtf/PassRefPtr.h> 32 #include <wtf/RefCounted.h> 33 #include <wtf/RefPtr.h> 34 35 namespace WebCore { 36 37 class IDBCursor; 38 class IDBCursorWithValue; 39 class IDBDatabase; 40 class IDBFactory; 41 class IDBIndex; 42 class IDBKey; 43 class IDBObjectStore; 44 class IDBTransaction; 45 class SerializedScriptValue; 46 47 class IDBAny : public RefCounted<IDBAny> { 48 public: 49 static PassRefPtr<IDBAny> createInvalid(); 50 static PassRefPtr<IDBAny> createNull(); 51 template<typename T> create(T * idbObject)52 static PassRefPtr<IDBAny> create(T* idbObject) 53 { 54 RefPtr<IDBAny> any = IDBAny::createInvalid(); 55 any->set(idbObject); 56 return any.release(); 57 } 58 template<typename T> create(PassRefPtr<T> idbObject)59 static PassRefPtr<IDBAny> create(PassRefPtr<T> idbObject) 60 { 61 RefPtr<IDBAny> any = IDBAny::createInvalid(); 62 any->set(idbObject); 63 return any.release(); 64 } 65 ~IDBAny(); 66 67 enum Type { 68 UndefinedType = 0, 69 NullType, 70 IDBCursorType, 71 IDBCursorWithValueType, 72 IDBDatabaseType, 73 IDBFactoryType, 74 IDBIndexType, 75 IDBKeyType, 76 IDBObjectStoreType, 77 IDBTransactionType, 78 SerializedScriptValueType 79 }; 80 type()81 Type type() const { return m_type; } 82 // Use type() to figure out which one of these you're allowed to call. 83 PassRefPtr<IDBCursor> idbCursor(); 84 PassRefPtr<IDBCursorWithValue> idbCursorWithValue(); 85 PassRefPtr<IDBDatabase> idbDatabase(); 86 PassRefPtr<IDBFactory> idbFactory(); 87 PassRefPtr<IDBIndex> idbIndex(); 88 PassRefPtr<IDBKey> idbKey(); 89 PassRefPtr<IDBObjectStore> idbObjectStore(); 90 PassRefPtr<IDBTransaction> idbTransaction(); 91 PassRefPtr<SerializedScriptValue> serializedScriptValue(); 92 93 // Set can only be called once. 94 void setNull(); 95 void set(PassRefPtr<IDBCursor>); 96 void set(PassRefPtr<IDBCursorWithValue>); 97 void set(PassRefPtr<IDBDatabase>); 98 void set(PassRefPtr<IDBFactory>); 99 void set(PassRefPtr<IDBIndex>); 100 void set(PassRefPtr<IDBKey>); 101 void set(PassRefPtr<IDBObjectStore>); 102 void set(PassRefPtr<IDBTransaction>); 103 void set(PassRefPtr<SerializedScriptValue>); 104 105 private: 106 IDBAny(); 107 108 Type m_type; 109 110 // Only one of the following should ever be in use at any given time. 111 RefPtr<IDBCursor> m_idbCursor; 112 RefPtr<IDBCursorWithValue> m_idbCursorWithValue; 113 RefPtr<IDBDatabase> m_idbDatabase; 114 RefPtr<IDBFactory> m_idbFactory; 115 RefPtr<IDBIndex> m_idbIndex; 116 RefPtr<IDBKey> m_idbKey; 117 RefPtr<IDBObjectStore> m_idbObjectStore; 118 RefPtr<IDBTransaction> m_idbTransaction; 119 RefPtr<SerializedScriptValue> m_serializedScriptValue; 120 }; 121 122 } // namespace WebCore 123 124 #endif // ENABLE(INDEXED_DATABASE) 125 126 #endif // IDBAny_h 127