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