客服中心智能排班系统数据访问层代码设计

数据访问层（DAL）是一个通用的编程模式，用于将数据访问逻辑与业务逻辑分离开来，以实现数据的持久化和存储。在客服中心智能排班系统中，DAL负责与数据库交互，提供CRUD操作（增删改查）。

以下是客服中心智能排班系统DAL代码设计：

1. 数据库连接类

public class DbConnection
{
    private string connectionString;

    public DbConnection()
    {
        connectionString = ConfigurationManager.ConnectionStrings["ConnectionStringName"].ConnectionString;
    }

    public IDbConnection GetConnection()
    {
        return new SqlConnection(connectionString);
    }
}

2. 排班表数据访问类

public class ScheduleDataAccess
{
    private IDbConnection connection;

    public ScheduleDataAccess()
    {
        connection = new DbConnection().GetConnection();
    }

    public List<Schedule> GetAllSchedules()
    {
        List<Schedule> schedules = new List<Schedule>();
        using (connection)
        {
            string query = "SELECT * FROM Schedule";
            schedules = connection.Query<Schedule>(query).ToList();
        }
        return schedules;
    }

    public Schedule GetScheduleById(int id)
    {
        Schedule schedule = new Schedule();
        using (connection)
        {
            string query = "SELECT * FROM Schedule WHERE Id = @Id";
            schedule = connection.Query<Schedule>(query, new { Id = id }).FirstOrDefault();
        }
        return schedule;
    }

    public void AddSchedule(Schedule schedule)
    {
        using (connection)
        {
            string query = "INSERT INTO Schedule (Date, Shift, Name) VALUES (@Date, @Shift, @Name)";
            connection.Execute(query, schedule);
        }
    }

    public void UpdateSchedule(Schedule schedule)
    {
        using (connection)
        {
            string query = "UPDATE Schedule SET Date = @Date, Shift = @Shift, Name = @Name WHERE Id = @Id";
            connection.Execute(query, schedule);
        }
    }

    public void DeleteSchedule(int id)
    {
        using (connection)
        {
            string query = "DELETE FROM Schedule WHERE Id = @Id";
            connection.Execute(query, new { Id = id });
        }
    }
}

3. 员工表数据访问类

public class EmployeeDataAccess
{
    private IDbConnection connection;

    public EmployeeDataAccess()
    {
        connection = new DbConnection().GetConnection();
    }

    public List<Employee> GetAllEmployees()
    {
        List<Employee> employees = new List<Employee>();
        using (connection)
        {
            string query = "SELECT * FROM Employee";
            employees = connection.Query<Employee>(query).ToList();
        }
        return employees;
    }

    public Employee GetEmployeeById(int id)
    {
        Employee employee = new Employee();
        using (connection)
        {
            string query = "SELECT * FROM Employee WHERE Id = @Id";
            employee = connection.Query<Employee>(query, new { Id = id }).FirstOrDefault();
        }
        return employee;
    }

    public void AddEmployee(Employee employee)
    {
        using (connection)
        {
            string query = "INSERT INTO Employee (Name, Skill, Available) VALUES (@Name, @Skill, @Available)";
            connection.Execute(query, employee);
        }
    }

    public void UpdateEmployee(Employee employee)
    {
        using (connection)
        {
            string query = "UPDATE Employee SET Name = @Name, Skill = @Skill, Available = @Available WHERE Id = @Id";
            connection.Execute(query, employee);
        }
    }

    public void DeleteEmployee(int id)
    {
        using (connection)
        {
            string query = "DELETE FROM Employee WHERE Id = @Id";
            connection.Execute(query, new { Id = id });
        }
    }
}

通过以上代码设计，我们可以很容易地实现客服中心智能排班系统的数据访问层，将数据访问逻辑与业务逻辑分离，提高代码的可维护性和可扩展性。