extensionfamilybase.cs

该项目中对 SQLHelper 类进行了简单封装

/* 
 * ExtensionFamilyBase.cs @Microsoft Visual Studio 2005 <.NET Framework 2.0>
 * AfritXia
 * 2007-12-04
 * 
 * Copyright(c) http://www.AfritXia.NET/
 * 
 */

using System;
using System.Collections.Generic;

using NET.AfritXia.MyHome.Extension.Definition;

namespace NET.AfritXia.MyHome.Extension.Families
{
	/// <summary>
	/// 扩展家族基础类
	/// </summary>
	/// <typeparam name="T"></typeparam>
	internal abstract class ExtensionFamilyBase<T> : IExtension where T : IExtension
	{
		// 扩展所有者
		private string m_actor = null;
		// 内置的功能扩展集合
		private List<T> m_innerExtensionList = new List<T>();

		#region 类构造器
		/// <summary>
		/// 类默认构造器
		/// </summary>
		internal ExtensionFamilyBase()
		{
		}
		#endregion

		#region IExtension 成员
		public string Actor
		{
			set
			{
				this.m_actor = value;

				foreach (IExtension e in this.InnerExtensionList)
					e.Actor = value;
			}

			get
			{
				return this.m_actor;
			}
		}

		public void EnlistTransactionObject(object tranxObj)
		{
			foreach (IExtension e in this.InnerExtensionList)
				e.EnlistTransactionObject(tranxObj);
		}
		#endregion

		/// <summary>
		/// 获取内置的扩展集合
		/// </summary>
		protected IList<T> InnerExtensionList
		{
			get
			{
				return this.m_innerExtensionList;
			}
		}

		/// <summary>
		/// 添加一个扩展到家族
		/// </summary>
		/// <param name="extension">新功能扩展</param>
		internal virtual void Add(T extension)
		{
			this.InnerExtensionList.Add(extension);
		}

		/// <summary>
		/// 从家族中移除一个扩展
		/// </summary>
		/// <param name="extension">被移除的扩展对象</param>
		/// <returns></returns>
		internal virtual bool Remove(T extension)
		{
			return this.InnerExtensionList.Remove(extension);
		}

		/// <summary>
		/// 从家族中移除指定索引处的扩展
		/// </summary>
		/// <param name="index">索引位置</param>
		internal virtual void RemoveAt(int index)
		{
			this.InnerExtensionList.RemoveAt(index);
		}

		/// <summary>
		/// 清除所有扩展
		/// </summary>
		internal virtual void Clear()
		{
			this.InnerExtensionList.Clear();
		}
	}
}