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Diffstat (limited to 'Source/WebCore/storage/ChangeVersionWrapper.cpp')
-rw-r--r-- | Source/WebCore/storage/ChangeVersionWrapper.cpp | 83 |
1 files changed, 83 insertions, 0 deletions
diff --git a/Source/WebCore/storage/ChangeVersionWrapper.cpp b/Source/WebCore/storage/ChangeVersionWrapper.cpp new file mode 100644 index 0000000..17be716 --- /dev/null +++ b/Source/WebCore/storage/ChangeVersionWrapper.cpp @@ -0,0 +1,83 @@ +/* + * Copyright (C) 2007 Apple Inc. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of Apple Computer, Inc. ("Apple") nor the names of + * its contributors may be used to endorse or promote products derived + * from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY + * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED + * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE + * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY + * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES + * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; + * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND + * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF + * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ +#include "config.h" +#include "ChangeVersionWrapper.h" + +#if ENABLE(DATABASE) +#include "Database.h" +#include "SQLError.h" +#include <wtf/PassRefPtr.h> +#include <wtf/RefPtr.h> + +namespace WebCore { + +ChangeVersionWrapper::ChangeVersionWrapper(const String& oldVersion, const String& newVersion) + : m_oldVersion(oldVersion.crossThreadString()) + , m_newVersion(newVersion.crossThreadString()) +{ +} + +bool ChangeVersionWrapper::performPreflight(SQLTransaction* transaction) +{ + ASSERT(transaction && transaction->database()); + + String actualVersion; + + if (!transaction->database()->getVersionFromDatabase(actualVersion)) { + LOG_ERROR("Unable to retrieve actual current version from database"); + m_sqlError = SQLError::create(SQLError::UNKNOWN_ERR, "unable to verify current version of database"); + return false; + } + + if (actualVersion != m_oldVersion) { + LOG_ERROR("Old version doesn't match actual version"); + m_sqlError = SQLError::create(SQLError::VERSION_ERR, "current version of the database and `oldVersion` argument do not match"); + return false; + } + + return true; +} + +bool ChangeVersionWrapper::performPostflight(SQLTransaction* transaction) +{ + ASSERT(transaction && transaction->database()); + + if (!transaction->database()->setVersionInDatabase(m_newVersion)) { + LOG_ERROR("Unable to set new version in database"); + m_sqlError = SQLError::create(SQLError::UNKNOWN_ERR, "unable to set new version in database"); + return false; + } + + transaction->database()->setExpectedVersion(m_newVersion); + + return true; +} + +} // namespace WebCore + +#endif // ENABLE(DATABASE) |