1/*
2 * Copyright (C) 2010 Google Inc. All rights reserved.
3 * Copyright (C) 2013 Apple Inc. All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions are
7 * met:
8 *
9 *     * Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 *     * Redistributions in binary form must reproduce the above
12 * copyright notice, this list of conditions and the following disclaimer
13 * in the documentation and/or other materials provided with the
14 * distribution.
15 *     * Neither the name of Google Inc. nor the names of its
16 * contributors may be used to endorse or promote products derived from
17 * this software without specific prior written permission.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
20 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
21 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
22 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
23 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
24 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
25 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
26 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
27 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
28 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
29 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30 */
31
32#ifndef SQLTransactionBackendSync_h
33#define SQLTransactionBackendSync_h
34
35#if ENABLE(SQL_DATABASE)
36
37#include "DatabaseBasicTypes.h"
38#include <memory>
39#include <wtf/Forward.h>
40#include <wtf/RefCounted.h>
41#include <wtf/Vector.h>
42#include <wtf/text/WTFString.h>
43
44namespace WebCore {
45
46class DatabaseSync;
47class SQLResultSet;
48class SQLTransactionClient;
49class SQLTransactionSyncCallback;
50class SQLValue;
51class SQLiteTransaction;
52
53// Instances of this class should be created and used only on the worker's context thread.
54class SQLTransactionBackendSync : public RefCounted<SQLTransactionBackendSync> {
55public:
56    ~SQLTransactionBackendSync();
57
58    PassRefPtr<SQLResultSet> executeSQL(const String& sqlStatement, const Vector<SQLValue>& arguments, ExceptionCode&);
59
60    DatabaseSync* database() { return m_database.get(); }
61    bool isReadOnly() const { return m_readOnly; }
62
63    ExceptionCode begin();
64    ExceptionCode execute();
65    ExceptionCode commit();
66    void rollback();
67
68private:
69    SQLTransactionBackendSync(DatabaseSync*, PassRefPtr<SQLTransactionSyncCallback>, bool readOnly);
70
71    RefPtr<DatabaseSync> m_database;
72    RefPtr<SQLTransactionSyncCallback> m_callback;
73    bool m_readOnly;
74    bool m_hasVersionMismatch;
75
76    bool m_modifiedDatabase;
77    std::unique_ptr<SQLTransactionClient> m_transactionClient;
78    std::unique_ptr<SQLiteTransaction> m_sqliteTransaction;
79
80    friend class SQLTransactionSync; // FIXME: Remove this once the front-end has been properly isolated.
81};
82
83} // namespace WebCore
84
85#endif
86
87#endif // SQLTransactionBackendSync_h
88