Nhiberate 增删改查

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

using NHibernate;
using NHibernate.Cfg;
using NHibernate.Criterion;
using TCAEntity.Entities;

namespace TCABLL
{
    public class UserPowerBLL : IDisposable
    {
        #region  Loacl Declaration

        private ISession dataBaseSession = null;

        #endregion

        #region Methods

        /// <summary>
        /// 公共构造函数
        /// </summary>
        public UserPowerBLL()
        {

        }

        /// <summary>
        /// 添加用户
        /// </summary>
        /// <param name="model">信息</param>
        /// <returns>true 添加成功 false 添加失败</returns>
        public bool AddUserPower(TCA_UserPower model)
        {
            this.Dispose();
            if (dataBaseSession == null)
            {
                dataBaseSession = DataBaseSession;
            }
            ITransaction tran = dataBaseSession.BeginTransaction();
            try
            {
                dataBaseSession.Save(model);
                dataBaseSession.Flush();
                tran.Commit();
                return true;
            }
            catch
            {
                tran.Rollback();
                return false;
            }
        }

        /// <summary>
        /// 修改
        /// </summary>
        /// <param name="model">信息</param>
        /// <returns>true 更新成功 false 更新失败</returns>
        public bool UpdateUserPower(TCA_UserPower model)
        {
            this.Dispose();
            if (dataBaseSession == null)
            {
                dataBaseSession = DataBaseSession;
            }
            ITransaction tran = dataBaseSession.BeginTransaction();
            try
            {
                dataBaseSession.Update(model);
                dataBaseSession.Flush();
                tran.Commit();
                return true;
            }
            catch
            {
                tran.Rollback();
                return false;
            }
        }

        /// <summary>
        /// 删除用户
        /// </summary>
        /// <param name="model">信息</param>
        /// <returns>true 更新成功 false 更新失败</returns>
        public bool DeleteUserPower(TCA_UserPower model)
        {
            this.Dispose();
            if (dataBaseSession == null)
            {
                dataBaseSession = DataBaseSession;
            }
            ITransaction tran = dataBaseSession.BeginTransaction();
            try
            {
                dataBaseSession.Delete(model);
                dataBaseSession.Flush();
                tran.Commit();
                return true;
            }
            catch
            {
                tran.Rollback();
                return false;
            }
        }

/// <summary>
        /// 通过用户编号移除用户所有角色
        /// </summary>
        /// <param name="userCode">用户编号</param>
        /// <returns></returns>
        public bool UpdateUserRole(string userCode)
        {
            if (dataBaseSession == null)
            {
                dataBaseSession = DataBaseSession;
            }
            ITransaction tran = dataBaseSession.BeginTransaction();
            try
            {
                IQuery query = dataBaseSession.CreateSQLQuery("Update TCA_UserPower Set RoleCode='' where UserCode=:UserCode");
                query.SetParameter("UserCode", userCode);
                query.ExecuteUpdate();
                tran.Commit();
                return true;
            }
            catch
            {
                tran.Rollback();
                return false;
            }
        }

        /// <summary>
        /// 获取指定的用户
        /// </summary>
        /// <param name="Code">编号</param>
        /// <returns>返回指定的信息</returns>
        public TCA_UserPower GetUserPowerByCode(string Code)
        {
            this.Dispose();
            if (dataBaseSession == null)
            {
                dataBaseSession = DataBaseSession;
            }
            return dataBaseSession.Get<TCA_UserPower>(Code);
        }
/// <summary>
        /// 通过用户编号获取用户
        /// </summary>
        /// <param name="userCode">用户编号</param>
        /// <returns></returns>
        public IList<TCA_UserPower> GetUserPowerByUserCode(string userCode)
        {
            this.Dispose();
            if (dataBaseSession == null)
            {
                dataBaseSession = DataBaseSession;
            }
            ICriteria criteria = dataBaseSession.CreateCriteria(typeof(TCA_UserPower));
            criteria.Add(Restrictions.Eq("UserCode", userCode));
            return criteria.List<TCA_UserPower>();
        }

        #endregion

        #region 释放资源

        public void Dispose()
        {
            if (dataBaseSession != null)
            {
                try
                {
                    dataBaseSession.Clear();
                    dataBaseSession.Close();
                    dataBaseSession.Dispose();
                    dataBaseSession = null;
                }
                catch
                {
                    dataBaseSession = null;
                }
            }
        }

        #endregion

        #region Properties

        public ISession DataBaseSession
        {
            get
            {
                if (dataBaseSession == null)
                {
                    dataBaseSession = new Configuration().AddAssembly("TCAEntity").BuildSessionFactory().OpenSession();
                }
                return dataBaseSession;
            }
        }

        #endregion

    }
}