1 | /* |
2 | * Copyright (C) 2007, 2013, 2015 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 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 | #pragma once |
30 | |
31 | #include "SQLTransactionStateMachine.h" |
32 | #include <memory> |
33 | #include <wtf/Forward.h> |
34 | #include <wtf/text/WTFString.h> |
35 | |
36 | namespace WebCore { |
37 | |
38 | class Database; |
39 | class OriginLock; |
40 | class SQLError; |
41 | class SQLiteTransaction; |
42 | class SQLStatement; |
43 | class SQLTransaction; |
44 | class SQLTransactionWrapper; |
45 | |
46 | class SQLTransactionBackend : public SQLTransactionStateMachine<SQLTransactionBackend> { |
47 | public: |
48 | explicit SQLTransactionBackend(SQLTransaction&); |
49 | ~SQLTransactionBackend(); |
50 | |
51 | void notifyDatabaseThreadIsShuttingDown(); |
52 | |
53 | // API called from the frontend published via SQLTransactionBackend: |
54 | void requestTransitToState(SQLTransactionState); |
55 | |
56 | private: |
57 | friend class SQLTransaction; |
58 | |
59 | void doCleanup(); |
60 | |
61 | // State Machine functions: |
62 | StateFunction stateFunctionFor(SQLTransactionState) override; |
63 | void computeNextStateAndCleanupIfNeeded(); |
64 | |
65 | // State functions: |
66 | void acquireLock(); |
67 | void openTransactionAndPreflight(); |
68 | void runStatements(); |
69 | void cleanupAndTerminate(); |
70 | void cleanupAfterTransactionErrorCallback(); |
71 | |
72 | NO_RETURN_DUE_TO_ASSERT void unreachableState(); |
73 | |
74 | SQLTransaction& m_frontend; |
75 | }; |
76 | |
77 | } // namespace WebCore |
78 | |