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/*
* Copyright (C) 2007, 2013 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 "modules/webdatabase/ChangeVersionWrapper.h"
#include "modules/webdatabase/Database.h"
#include "modules/webdatabase/SQLError.h"
namespace blink {
ChangeVersionWrapper::ChangeVersionWrapper(const String& oldVersion,
const String& newVersion)
: m_oldVersion(oldVersion.isolatedCopy()),
m_newVersion(newVersion.isolatedCopy()) {}
bool ChangeVersionWrapper::performPreflight(
SQLTransactionBackend* transaction) {
ASSERT(transaction && transaction->database());
Database* database = transaction->database();
String actualVersion;
if (!database->getVersionFromDatabase(actualVersion)) {
int sqliteError = database->sqliteDatabase().lastError();
database->reportChangeVersionResult(1, SQLError::kUnknownErr, sqliteError);
m_sqlError = SQLErrorData::create(
SQLError::kUnknownErr, "unable to read the current version",
sqliteError, database->sqliteDatabase().lastErrorMsg());
return false;
}
if (actualVersion != m_oldVersion) {
database->reportChangeVersionResult(2, SQLError::kVersionErr, 0);
m_sqlError = SQLErrorData::create(SQLError::kVersionErr,
"current version of the database and "
"`oldVersion` argument do not match");
return false;
}
return true;
}
bool ChangeVersionWrapper::performPostflight(
SQLTransactionBackend* transaction) {
ASSERT(transaction && transaction->database());
Database* database = transaction->database();
if (!database->setVersionInDatabase(m_newVersion)) {
int sqliteError = database->sqliteDatabase().lastError();
database->reportChangeVersionResult(3, SQLError::kUnknownErr, sqliteError);
m_sqlError = SQLErrorData::create(
SQLError::kUnknownErr, "unable to set new version in database",
sqliteError, database->sqliteDatabase().lastErrorMsg());
return false;
}
database->setExpectedVersion(m_newVersion);
database->reportChangeVersionResult(0, -1, 0); // OK
return true;
}
void ChangeVersionWrapper::handleCommitFailedAfterPostflight(
SQLTransactionBackend* transaction) {
transaction->database()->setCachedVersion(m_oldVersion);
}
} // namespace blink
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