using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

using NHibernate;

using DataService.util;

using Domain.Entities;

using NHibernate.Criterion;

using System.Reflection;



namespace DataService.service.basic

{

    public abstract class BaseServiceImpl : BaseService

    {

        #region BaseService Members



        public Object get(Type t, string id)

        {

            using (ISession session = getSession())

            {

                return session.Get(t, id);

            }

        }



        public void save(object obj)

        {

            using (ISession session = getSession())

            {

                ITransaction tx = null;

                try

                {

                    tx = session.BeginTransaction();

                    PropertyInfo property = obj.GetType().GetProperty("Id");

                    Object Id = property.GetValue(obj, null);

                    if (Id == null || Id.Equals(""))

                    {

                        session.Save(obj);

                    }

                    else

                    {

                        session.Update(obj);

                    }

                    tx.Commit();

                }

                catch (Exception e)

                {

                    throw new ServiceException("保存失败！" + e.Message);

                    tx.Rollback();

                }

            }

        }



        public void del(object obj)

        {

            using (ISession session = getSession())

            {

                ITransaction tx = null;

                try

                {

                    tx = session.BeginTransaction();

                    session.Delete(obj);

                    tx.Commit();

                }

                catch (Exception e)

                {

                    tx.Rollback();

                    throw new ServiceException("删除失败！" + e.Message);

                }

            }

        }



        public ISession getSession()

        {

            return NHibernateHelper.GetSession();

        }



        public int getCount(ICriteria c)

        {

            c.SetProjection(Projections.RowCount());

            return (int)c.UniqueResult();

        }



        #endregion

    }

}