持久化类

using NHibernate.Cfg;
using NHibernate;
using System;
using System.Reflection;
using System.Collections;

namespace nhiber
...{
    /**//// <summary>
    /// 持久化类
    /// </summary>
    public class BizObject 
    ...{
        public BizObject() ...{ }
    
        public BizObject( object existingId ) 
        ...{
            ObjectBroker.Load( this, existingId );
        }
        public virtual void Create() 
        ...{
            ObjectBroker.Create( this );
        }
        public virtual void Update() 
        ...{
            ObjectBroker.Update( this );
        }
        public virtual void Delete() 
        ...{
            ObjectBroker.Delete( this );
        }

        public virtual IList List()
        ...{
            return ObjectBroker.Lists(this);
        }
    }
    
    
    public class ObjectBroker 
    ...{
        private ObjectBroker() ...{ }
    
        public static void Load( object obj, object id )
        ...{
            ISession s = Sessions.GetSession(); 
            try 
            ...{
                s.Load( obj, id );
            }
            finally 
            ...{
                s.Close();
            }
        }
    
        public static void Create( object obj ) 
        ...{
            ISession s = Sessions.GetSession();
            ITransaction trans = null;
            try 
            ...{
                trans = s.BeginTransaction();
                s.Save( obj );
                trans.Commit();
            }
            finally 
            ...{
                s.Close();
            } 
        }
    
        public static void Update( object obj ) 
        ...{
            ISession s = Sessions.GetSession();
            ITransaction trans = null; 
            try 
            ...{
                trans = s.BeginTransaction();
                s.Update( obj );
                trans.Commit();
            }
            finally 
            ...{
                s.Close();
            }
        }
    
        public static void Delete( object obj ) 
        ...{
            ISession s = Sessions.GetSession();
            ITransaction trans = null; 
            try 
            ...{
                trans = s.BeginTransaction();
                s.Delete( obj );
                trans.Commit();
            }
            finally 
            ...{
                s.Close();
            }
        }

        public static IList Lists(object obj)
        ...{
            IList lst;
            ISession session = Sessions.GetSession(); 
            ITransaction transaction = session.BeginTransaction();

            ICriteria crit=session.CreateCriteria(obj.GetType());
            lst=crit.List();
             
            transaction.Commit();
            session.Close();
            return lst;
        }
    }
    
    
    
    
    public class Sessions
    ...{
        private static readonly object lockObj = new object();
        private static  ISessionFactory m_factory;
    
        public Sessions()
        ...{
           
        }
        public static ISessionFactory Factory 
        ...{


            get 
            ...{ 
                if ( m_factory == null ) 
                ...{
                    lock ( lockObj ) 
                    ...{
                        if ( m_factory == null ) 
                        ...{
                            Configuration cfg = new Configuration();
                            cfg.AddAssembly( Assembly.GetExecutingAssembly() );
                            m_factory = cfg.BuildSessionFactory(); 
                        }
                    } 
                }
                return m_factory;
            }
        } 
        public static ISession GetSession() 
        ...{
            return Factory.OpenSession();
        }
    
    }
}