#ifndef DatabaseTask_h
#define DatabaseTask_h
#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;
};
}
#endif // DatabaseTask_h