| /* |
| * Copyright (C) 2007, 2008 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. |
| */ |
| #ifndef DatabaseTask_h |
| #define DatabaseTask_h |
| |
| #if ENABLE(DATABASE) |
| #include "ExceptionCode.h" |
| #include "PlatformString.h" |
| #include <wtf/OwnPtr.h> |
| #include <wtf/PassRefPtr.h> |
| #include <wtf/Threading.h> |
| #include <wtf/Vector.h> |
| |
| namespace WebCore { |
| |
| class Database; |
| class DatabaseThread; |
| class SQLValue; |
| class SQLCallback; |
| class SQLTransaction; |
| class VersionChangeCallback; |
| |
| class DatabaseTask : public ThreadSafeShared<DatabaseTask> { |
| friend class Database; |
| public: |
| virtual ~DatabaseTask(); |
| |
| void performTask(); |
| |
| Database* database() const { return m_database; } |
| bool isComplete() const { return m_complete; } |
| |
| protected: |
| DatabaseTask(Database*); |
| |
| private: |
| virtual void doPerformTask() = 0; |
| #ifndef NDEBUG |
| virtual const char* debugTaskName() const = 0; |
| #endif |
| |
| void lockForSynchronousScheduling(); |
| void waitForSynchronousCompletion(); |
| |
| Database* m_database; |
| |
| bool m_complete; |
| |
| OwnPtr<Mutex> m_synchronousMutex; |
| OwnPtr<ThreadCondition> m_synchronousCondition; |
| }; |
| |
| class DatabaseOpenTask : public DatabaseTask { |
| public: |
| static PassRefPtr<DatabaseOpenTask> create(Database* db) { return adoptRef(new DatabaseOpenTask(db)); } |
| |
| ExceptionCode exceptionCode() const { return m_code; } |
| bool openSuccessful() const { return m_success; } |
| |
| private: |
| DatabaseOpenTask(Database*); |
| |
| virtual void doPerformTask(); |
| #ifndef NDEBUG |
| virtual const char* debugTaskName() const; |
| #endif |
| |
| ExceptionCode m_code; |
| bool m_success; |
| }; |
| |
| class DatabaseCloseTask : public DatabaseTask { |
| public: |
| static PassRefPtr<DatabaseCloseTask> create(Database* db) { return adoptRef(new DatabaseCloseTask(db)); } |
| |
| private: |
| DatabaseCloseTask(Database*); |
| |
| virtual void doPerformTask(); |
| #ifndef NDEBUG |
| virtual const char* debugTaskName() const; |
| #endif |
| }; |
| |
| class DatabaseTransactionTask : public DatabaseTask { |
| public: |
| static PassRefPtr<DatabaseTransactionTask> create(PassRefPtr<SQLTransaction> transaction) { return adoptRef(new DatabaseTransactionTask(transaction)); } |
| |
| SQLTransaction* transaction() const { return m_transaction.get(); } |
| |
| virtual ~DatabaseTransactionTask(); |
| private: |
| DatabaseTransactionTask(PassRefPtr<SQLTransaction>); |
| |
| virtual void doPerformTask(); |
| #ifndef NDEBUG |
| virtual const char* debugTaskName() const; |
| #endif |
| |
| RefPtr<SQLTransaction> m_transaction; |
| }; |
| |
| class DatabaseTableNamesTask : public DatabaseTask { |
| public: |
| static PassRefPtr<DatabaseTableNamesTask> create(Database* db) { return adoptRef(new DatabaseTableNamesTask(db)); } |
| |
| Vector<String>& tableNames() { return m_tableNames; } |
| |
| private: |
| DatabaseTableNamesTask(Database*); |
| |
| virtual void doPerformTask(); |
| #ifndef NDEBUG |
| virtual const char* debugTaskName() const; |
| #endif |
| |
| Vector<String> m_tableNames; |
| }; |
| |
| } // namespace WebCore |
| |
| #endif // ENABLE(DATABASE) |
| #endif // DatabaseTask_h |