1 /* 2 * Copyright (C) 2007, 2013 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 "modules/webdatabase/ChangeVersionWrapper.h" 30 31 #include "modules/webdatabase/Database.h" 32 #include "modules/webdatabase/SQLError.h" 33 #include "wtf/PassRefPtr.h" 34 #include "wtf/RefPtr.h" 35 36 namespace blink { 37 38 ChangeVersionWrapper::ChangeVersionWrapper(const String& oldVersion, const String& newVersion) 39 : m_oldVersion(oldVersion.isolatedCopy()) 40 , m_newVersion(newVersion.isolatedCopy()) 41 { 42 } 43 44 bool ChangeVersionWrapper::performPreflight(SQLTransactionBackend* transaction) 45 { 46 ASSERT(transaction && transaction->database()); 47 48 Database* database = transaction->database(); 49 50 String actualVersion; 51 if (!database->getVersionFromDatabase(actualVersion)) { 52 int sqliteError = database->sqliteDatabase().lastError(); 53 database->reportChangeVersionResult(1, SQLError::UNKNOWN_ERR, sqliteError); 54 m_sqlError = SQLErrorData::create(SQLError::UNKNOWN_ERR, "unable to read the current version", 55 sqliteError, database->sqliteDatabase().lastErrorMsg()); 56 return false; 57 } 58 59 if (actualVersion != m_oldVersion) { 60 database->reportChangeVersionResult(2, SQLError::VERSION_ERR, 0); 61 m_sqlError = SQLErrorData::create(SQLError::VERSION_ERR, "current version of the database and `oldVersion` argument do not match"); 62 return false; 63 } 64 65 return true; 66 } 67 68 bool ChangeVersionWrapper::performPostflight(SQLTransactionBackend* transaction) 69 { 70 ASSERT(transaction && transaction->database()); 71 72 Database* database = transaction->database(); 73 74 if (!database->setVersionInDatabase(m_newVersion)) { 75 int sqliteError = database->sqliteDatabase().lastError(); 76 database->reportChangeVersionResult(3, SQLError::UNKNOWN_ERR, sqliteError); 77 m_sqlError = SQLErrorData::create(SQLError::UNKNOWN_ERR, "unable to set new version in database", 78 sqliteError, database->sqliteDatabase().lastErrorMsg()); 79 return false; 80 } 81 82 database->setExpectedVersion(m_newVersion); 83 84 database->reportChangeVersionResult(0, -1, 0); // OK 85 return true; 86 } 87 88 void ChangeVersionWrapper::handleCommitFailedAfterPostflight(SQLTransactionBackend* transaction) 89 { 90 transaction->database()->setCachedVersion(m_oldVersion); 91 } 92 93 } // namespace blink 94
