1 /*
2 * Copyright (C) 2007 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 #include "config.h"
29 #include "ChangeVersionWrapper.h"
30
31 #if ENABLE(DATABASE)
32 #include "Database.h"
33
34 namespace WebCore {
35
ChangeVersionWrapper(const String & oldVersion,const String & newVersion)36 ChangeVersionWrapper::ChangeVersionWrapper(const String& oldVersion, const String& newVersion)
37 : m_oldVersion(oldVersion.crossThreadString())
38 , m_newVersion(newVersion.crossThreadString())
39 {
40 }
41
performPreflight(SQLTransaction * transaction)42 bool ChangeVersionWrapper::performPreflight(SQLTransaction* transaction)
43 {
44 ASSERT(transaction && transaction->database());
45
46 String actualVersion;
47
48 if (!transaction->database()->getVersionFromDatabase(actualVersion)) {
49 LOG_ERROR("Unable to retrieve actual current version from database");
50 m_sqlError = SQLError::create(0, "unable to verify current version of database");
51 return false;
52 }
53
54 if (actualVersion != m_oldVersion) {
55 LOG_ERROR("Old version doesn't match actual version");
56 m_sqlError = SQLError::create(2, "current version of the database and `oldVersion` argument do not match");
57 return false;
58 }
59
60 return true;
61 }
62
performPostflight(SQLTransaction * transaction)63 bool ChangeVersionWrapper::performPostflight(SQLTransaction* transaction)
64 {
65 ASSERT(transaction && transaction->database());
66
67 if (!transaction->database()->setVersionInDatabase(m_newVersion)) {
68 LOG_ERROR("Unable to set new version in database");
69 m_sqlError = SQLError::create(0, "unable to set new version in database");
70 return false;
71 }
72
73 transaction->database()->setExpectedVersion(m_newVersion);
74
75 return true;
76 }
77
78 } // namespace WebCore
79
80 #endif // ENABLE(DATABASE)
81