connection.h

#ifndef QELOQUENT_CONNECTION_H
#define QELOQUENT_CONNECTION_H
 
#include <QEloquent/global.h>
#include <QEloquent/result.h>
 
#include <QSharedDataPointer>
 
class QDateTime;
class QSqlDatabase;
class QSqlQuery;
class QSqlError;
class QUrl;
 
namespace QEloquent {
 
class Error;
class Driver;
 
class ConnectionData;
class QELOQUENT_EXPORT Connection
{
public:
    enum TimePrecision {
        DefaultPrecision,
        HighPrecision,
        RealTimePrecision,
        LowPrecision
    };
 
    Connection();
    Connection(const Connection &);
    Connection(Connection &&);
    Connection &operator=(const Connection &);
    Connection &operator=(Connection &&);
    ~Connection();
 
    QString name() const;
 
    bool isOpen() const;
    bool open();
    bool open(const QString &user, const QString &password);
    void close();
 
    bool beginTransaction();
    bool commitTransaction();
    bool rollbackTransaction();
 
    Result<QDateTime, Error> now(TimePrecision precision = TimePrecision::DefaultPrecision) const;
 
    Result<QSqlQuery, QSqlError> exec(const QString &query, bool cache = false) const;
    QSqlError lastError() const;
 
    Driver *driver() const;
 
    const QSqlDatabase database() const;
    QSqlDatabase database();
 
    bool isValid() const;
 
    operator const QSqlDatabase() const;
    operator QSqlDatabase();
 
    static Connection connection(const QString &name);
    static Connection addConnection(const QString &name, const QUrl &url);
    static Connection addConnection(const QString &name, const QString &type, const QString &dbName, int port = -1);
    static Connection addConnection(const QString &name, const QString &type, const QString &dbName, int port, const QString &userName, const QString &password);
    static Connection addConnection(const QString &name, const QSqlDatabase &db, bool ownDb = false);
    static void removeConnection(const QString &name);
 
    static QString defaultConnectionName();
    static Connection defaultConnection();
    static void setDefault(const Connection &connection);
 
private:
    Connection(ConnectionData *data);
 
    QExplicitlySharedDataPointer<ConnectionData> data;
 
    static QString s_defaultConnection;
    static QMap<QString, Connection> s_connections;
};
 
} // namespace QEloquent
 
#endif // QELOQUENT_CONNECTION_H