| /* |
| * Copyright (C) 2010 Google 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: |
| * |
| * * Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * * 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. |
| * * Neither the name of Google Inc. 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 THE COPYRIGHT HOLDERS AND 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 THE COPYRIGHT |
| * OWNER OR 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 "modules/webdatabase/DatabaseSync.h" |
| |
| #include "bindings/v8/ExceptionState.h" |
| #include "core/dom/ExceptionCode.h" |
| #include "core/dom/ExecutionContext.h" |
| #include "platform/Logging.h" |
| #include "modules/webdatabase/DatabaseCallback.h" |
| #include "modules/webdatabase/DatabaseContext.h" |
| #include "modules/webdatabase/DatabaseManager.h" |
| #include "modules/webdatabase/DatabaseTracker.h" |
| #include "modules/webdatabase/SQLError.h" |
| #include "modules/webdatabase/SQLTransactionSync.h" |
| #include "modules/webdatabase/SQLTransactionSyncCallback.h" |
| #include "platform/weborigin/SecurityOrigin.h" |
| #include "wtf/PassRefPtr.h" |
| #include "wtf/RefPtr.h" |
| #include "wtf/text/CString.h" |
| |
| namespace WebCore { |
| |
| PassRefPtr<DatabaseSync> DatabaseSync::create(ExecutionContext*, PassRefPtr<DatabaseBackendBase> backend) |
| { |
| return static_cast<DatabaseSync*>(backend.get()); |
| } |
| |
| DatabaseSync::DatabaseSync(PassRefPtr<DatabaseContext> databaseContext, |
| const String& name, const String& expectedVersion, const String& displayName, unsigned long estimatedSize) |
| : DatabaseBase(databaseContext->executionContext()) |
| , DatabaseBackendSync(databaseContext, name, expectedVersion, displayName, estimatedSize) |
| { |
| ScriptWrappable::init(this); |
| setFrontend(this); |
| } |
| |
| DatabaseSync::~DatabaseSync() |
| { |
| ASSERT(m_executionContext->isContextThread()); |
| } |
| |
| PassRefPtr<DatabaseBackendSync> DatabaseSync::backend() |
| { |
| return this; |
| } |
| |
| void DatabaseSync::changeVersion(const String& oldVersion, const String& newVersion, PassOwnPtr<SQLTransactionSyncCallback> changeVersionCallback, ExceptionState& exceptionState) |
| { |
| ASSERT(m_executionContext->isContextThread()); |
| |
| if (sqliteDatabase().transactionInProgress()) { |
| reportChangeVersionResult(1, SQLError::DATABASE_ERR, 0); |
| setLastErrorMessage("unable to changeVersion from within a transaction"); |
| exceptionState.throwUninformativeAndGenericDOMException(SQLDatabaseError); |
| return; |
| } |
| |
| RefPtr<SQLTransactionSync> transaction = SQLTransactionSync::create(this, changeVersionCallback, false); |
| transaction->begin(exceptionState); |
| if (exceptionState.hadException()) { |
| ASSERT(!lastErrorMessage().isEmpty()); |
| return; |
| } |
| |
| String actualVersion; |
| if (!getVersionFromDatabase(actualVersion)) { |
| reportChangeVersionResult(2, SQLError::UNKNOWN_ERR, sqliteDatabase().lastError()); |
| setLastErrorMessage("unable to read the current version", sqliteDatabase().lastError(), sqliteDatabase().lastErrorMsg()); |
| exceptionState.throwDOMException(UnknownError, SQLError::unknownErrorMessage); |
| return; |
| } |
| |
| if (actualVersion != oldVersion) { |
| reportChangeVersionResult(3, SQLError::VERSION_ERR, 0); |
| setLastErrorMessage("current version of the database and `oldVersion` argument do not match"); |
| exceptionState.throwDOMException(VersionError, SQLError::versionErrorMessage); |
| return; |
| } |
| |
| |
| transaction->execute(exceptionState); |
| if (exceptionState.hadException()) { |
| ASSERT(!lastErrorMessage().isEmpty()); |
| return; |
| } |
| |
| if (!setVersionInDatabase(newVersion)) { |
| reportChangeVersionResult(4, SQLError::UNKNOWN_ERR, sqliteDatabase().lastError()); |
| setLastErrorMessage("unable to set the new version", sqliteDatabase().lastError(), sqliteDatabase().lastErrorMsg()); |
| exceptionState.throwDOMException(UnknownError, SQLError::unknownErrorMessage); |
| return; |
| } |
| |
| transaction->commit(exceptionState); |
| if (exceptionState.hadException()) { |
| ASSERT(!lastErrorMessage().isEmpty()); |
| setCachedVersion(oldVersion); |
| return; |
| } |
| |
| reportChangeVersionResult(0, -1, 0); // OK |
| |
| setExpectedVersion(newVersion); |
| setLastErrorMessage(""); |
| } |
| |
| void DatabaseSync::transaction(PassOwnPtr<SQLTransactionSyncCallback> callback, ExceptionState& exceptionState) |
| { |
| runTransaction(callback, false, exceptionState); |
| } |
| |
| void DatabaseSync::readTransaction(PassOwnPtr<SQLTransactionSyncCallback> callback, ExceptionState& exceptionState) |
| { |
| runTransaction(callback, true, exceptionState); |
| } |
| |
| void DatabaseSync::rollbackTransaction(PassRefPtr<SQLTransactionSync> transaction) |
| { |
| ASSERT(!lastErrorMessage().isEmpty()); |
| transaction->rollback(); |
| setLastErrorMessage(""); |
| return; |
| } |
| |
| void DatabaseSync::runTransaction(PassOwnPtr<SQLTransactionSyncCallback> callback, bool readOnly, ExceptionState& exceptionState) |
| { |
| ASSERT(m_executionContext->isContextThread()); |
| |
| if (sqliteDatabase().transactionInProgress()) { |
| setLastErrorMessage("unable to start a transaction from within a transaction"); |
| exceptionState.throwUninformativeAndGenericDOMException(SQLDatabaseError); |
| return; |
| } |
| |
| RefPtr<SQLTransactionSync> transaction = SQLTransactionSync::create(this, callback, readOnly); |
| transaction->begin(exceptionState); |
| if (exceptionState.hadException()) { |
| rollbackTransaction(transaction); |
| return; |
| } |
| |
| transaction->execute(exceptionState); |
| if (exceptionState.hadException()) { |
| rollbackTransaction(transaction); |
| return; |
| } |
| |
| transaction->commit(exceptionState); |
| if (exceptionState.hadException()) { |
| rollbackTransaction(transaction); |
| return; |
| } |
| |
| setLastErrorMessage(""); |
| } |
| |
| void DatabaseSync::closeImmediately() |
| { |
| ASSERT(m_executionContext->isContextThread()); |
| |
| if (!opened()) |
| return; |
| |
| logErrorMessage("forcibly closing database"); |
| closeDatabase(); |
| } |
| |
| } // namespace WebCore |