ASP.NET&Spring.NET&NHibernate最佳实践(四)——第3章人事子系统（1）

人事子系统分层结构为：领域模型层（DomainModel）——数据访问层（Dao）——服务层（Sevice）——表示层（Web），在Web页面中采用了ObjectDataSource作为GridView的数据源，并为此增加了一个帮助类。
在数据访问层中充分体现了Spring.NET和NHibernate的无缝集成，只要继承HibernateDaoSupport就能很便捷的使用NHibernate，而不需要很深入了解NHibernate。

3.1. 人事子系统领域模型层(DomainModel)
部门（Dept.cs）

using  System;
using  System.Collections.Generic;
using  System.Text;

namespace  Guushuuse.SalaryPrj.HR.DomainModel
{
    /**//// <summary>
    /// 部门
    /// </summary>
    public class Dept
    {
        private int _id;
        private string _code;
        private string _name;

        属性#region 属性

        /**//// <summary>
        /// ID
        /// </summary>
        public virtual int ID
        {
            get { return _id; }
            set { _id = value; }
        }

        /**//// <summary>
        /// 部门代码
        /// </summary>
        public virtual string Code
        {
            get { return _code; }
            set { _code = value; }
        }

        /**//// <summary>
        /// 部门名称
        /// </summary>
        public virtual string Name
        {
            get { return _name; }
            set { _name = value; }
        }

        #endregion 属性

        构造函数#region 构造函数

        /**//// <summary>
        /// 
        /// </summary>
        public Dept()
        {
            this._id = -1;
            this._code = String.Empty;
            this._name = String.Empty;     
        }

        #endregion 构造函数
    }
}

员工（Employee.cs）

using  System;
using  System.Collections.Generic;
using  System.Text;

namespace  Guushuuse.SalaryPrj.HR.DomainModel
{
    /**//// <summary>
    /// 员工
    /// </summary>
    public class Employee
    {
        private int _id;
        private string _code;
        private string _name;
        private Dept _dept;

        属性#region 属性

        /**//// <summary>
        /// ID
        /// </summary>
        public virtual int ID
        {
            get { return _id; }
            set { _id = value; }
        }

        /**//// <summary>
        /// 工号
        /// </summary>
        public virtual string Code
        {
            get { return _code; }
            set { _code = value; }
        }

        /**//// <summary>
        /// 姓名
        /// </summary>
        public virtual string Name
        {
            get { return _name; }
            set { _name = value; }
        }

        /**//// <summary>
        /// 部门
        /// </summary>
        public virtual Dept Dept
        {
            get { return _dept; }
            set { _dept = value; }
        }

        /**//// <summary>
        /// 部门ID
        /// </summary>
        public virtual int DeptID
        {
            get
            {
                if (_dept != null)
                {
                    return _dept.ID;
                }
                else
                {
                    return -1;
                }
            }
        }

        /**//// <summary>
        /// 部门名称
        /// </summary>
        public virtual string DeptName
        {
            get
            {
                if (_dept != null)
                {
                    return _dept.Name;
                }
                else
                {
                    return String.Empty;
                }
            }
        }

        #endregion 属性

        构造函数#region 构造函数

        /**//// <summary>
        /// 
        /// </summary>
        public Employee()
        {
            this._id = -1;
            this._code = String.Empty;
            this._name = String.Empty;     
        }

        #endregion 构造函数
    }
}

3.2. 人事子系统映射文件(HBM)
Dept.hbm.xml

<? xml version="1.0" encoding="utf-8"  ?>
< hibernate-mapping  xmlns ="urn:nhibernate-mapping-2.2" >
   < class  name ="Guushuuse.SalaryPrj.HR.DomainModel.Dept, Guushuuse.SalaryPrj.HR"  table ="t_depts" >
     < id  name ="ID"  column ="dept_id"  type ="Int32"   unsaved-value ="-1" >
       < generator  class ="identity"   />
     </ id >

     < property  name ="Code"  column ="dept_code"  type ="String"  length ="255"  not-null ="true"   />
     < property  name ="Name"  column ="dept_name"  type ="String"  length ="255"  not-null ="true"   />   
   </ class >
</ hibernate-mapping >

Employee.hbm.xml

<? xml version="1.0" encoding="utf-8"  ?>
< hibernate-mapping  xmlns ="urn:nhibernate-mapping-2.2" >
   < class  name ="Guushuuse.SalaryPrj.HR.DomainModel.Employee, Guushuuse.SalaryPrj.HR"  table ="t_employees" >
     < id  name ="ID"  column ="employee_id"  type ="Int32"   unsaved-value ="-1" >
       < generator  class ="identity"   />
     </ id >

     < property  name ="Code"  column ="employee_code"  type ="String"  length ="255"  not-null ="true"   />
     < property  name ="Name"  column ="employee_name"  type ="String"  length ="255"  not-null ="true"   />

     < many-to-one  name ="Dept"  column ="dept_id"  class ="Guushuuse.SalaryPrj.HR.DomainModel.Dept, Guushuuse.SalaryPrj.HR"  not-null ="true"   />
   </ class >
</ hibernate-mapping >

3.3. 人事子系统数据访问层(Dao)
部门数据访问接口（IDeptDao.cs）

using  System;
using  Guushuuse.SalaryPrj.HR.DomainModel;
using  System.Collections;

namespace  Guushuuse.SalaryPrj.HR.Dao
{
    /**//// <summary>
    /// 部门数据访问接口
    /// </summary>
    public interface IDeptDao
    {
        void CreateDept(Dept dept);
        void DeleteDept(Dept dept);
        IList GetAllDepts();
        Dept GetDept(int deptID);
        void UpdateDept(Dept dept);
    }
}

部门数据访问类（DeptDao.cs）

using  System;
using  System.Collections.Generic;
using  System.Text;
using  Spring.Data.NHibernate.Support;
using  Spring.Transaction.Interceptor;
using  Guushuuse.SalaryPrj.HR.DomainModel;
using  System.Collections;

namespace  Guushuuse.SalaryPrj.HR.Dao
{
    /**//// <summary>
    /// 部门数据访问类
    /// </summary>
    public class DeptDao : HibernateDaoSupport, IDeptDao
    {
        public DeptDao()
        {

        }

        [Transaction(ReadOnly = false)]
        public void CreateDept(Dept dept)
        {
            HibernateTemplate.Save(dept);
        }

        [Transaction(ReadOnly = false)]
        public void UpdateDept(Dept dept)
        {
            HibernateTemplate.Update(dept);
        }

        [Transaction(ReadOnly = false)]
        public void DeleteDept(Dept dept)
        {
            HibernateTemplate.Delete(dept);
        }

        public IList GetAllDepts()
        {
            return HibernateTemplate.LoadAll(typeof(Dept));
        }

        public Dept GetDept(int deptID)
        {
            return (Dept)HibernateTemplate.Get(typeof(Dept), deptID);
        }
    }
}

员工数据访问接口（IEmployeeDao.cs）

using  System;
using  Guushuuse.SalaryPrj.HR.DomainModel;
using  System.Collections;

namespace  Guushuuse.SalaryPrj.HR.Dao
{
    /**//// <summary>
    /// 员工数据访问接口
    /// </summary>
    public interface IEmployeeDao
    {
        void CreateEmployee(Employee employee);
        void DeleteEmployee(Employee employee);
        IList GetAllEmployees();
        Employee GetEmployee(int employeeID);
        void UpdateEmployee(Employee employee);
    }
}

员工数据访问类（EmployeeDao.cs）

using  System;
using  System.Collections.Generic;
using  System.Text;
using  Spring.Data.NHibernate.Support;
using  Spring.Transaction.Interceptor;
using  Guushuuse.SalaryPrj.HR.DomainModel;
using  System.Collections;

namespace  Guushuuse.SalaryPrj.HR.Dao
{
    /**//// <summary>
    /// 员工数据访问类
    /// </summary>
    public class EmployeeDao : HibernateDaoSupport, IEmployeeDao
    {
        public EmployeeDao()
        {

        }


        [Transaction(ReadOnly = false)]
        public void CreateEmployee(Employee employee)
        {
            HibernateTemplate.Save(employee);
        }

        [Transaction(ReadOnly = false)]
        public void UpdateEmployee(Employee employee)
        {
            HibernateTemplate.Update(employee);
        }

        [Transaction(ReadOnly = false)]
        public void DeleteEmployee(Employee employee)
        {
            HibernateTemplate.Delete(employee);
        }

        public IList GetAllEmployees()
        {
            return HibernateTemplate.LoadAll(typeof(Employee));
        }

        public Employee GetEmployee(int employeeID)
        {
            return (Employee)HibernateTemplate.Get(typeof(Employee), employeeID);
        }
    }
}

修改Config/Guushuuse.SalaryPrj.HR.config文件，新增object

< object  id ="deptDao"  type ="Guushuuse.SalaryPrj.HR.Dao.DeptDao, Guushuuse.SalaryPrj.HR" >
     < property  name ="HibernateTemplate"  ref ="hibernateTemplate"   />
   </ object >

   < object  id ="employeeDao"  type ="Guushuuse.SalaryPrj.HR.Dao.EmployeeDao, Guushuuse.SalaryPrj.HR" >
     < property  name ="HibernateTemplate"  ref ="hibernateTemplate"   />
   </ object >