articleextension.cs

来自「该项目中对 SQLHelper 类进行了简单封装」· CS 代码 · 共 65 行

/* 
 * ArticleExtension.cs @Microsoft Visual Studio 2008 <.NET Framework 3.5>
 * AfritXia
 * 2008-02-05
 * 
 * Copyright(c) http://www.AfritXia.NET/
 * 
 */

using System;

using NET.AfritXia.MyHome.Extension;
using NET.AfritXia.MyHome.Model;
using NET.AfritXia.MyHome.Model.Message;

namespace NET.AfritXia.MyHome.Extension.CheckingIntegrality
{
	/// <summary>文章扩展</summary>
	public class ArticleExtension : ArticleExtensionBase
	{
		/// <summary>
		/// 添加新文章前进行完整性验证
		/// </summary>
		/// <param name="newArticle"></param>
		public override void OnPreAppend(Article newArticle)
		{
			this.Validate(newArticle);
		}

		/// <summary>
		/// 更新文章前进行完整性验证
		/// </summary>
		/// <param name="newArticle"></param>
		public override void OnPreUpdate(Article newArticle)
		{
			this.Validate(newArticle);
		}

		/// <summary>
		/// 验证新文章
		/// </summary>
		/// <param name="newArticle"></param>
		private void Validate(Article newArticle)
		{
			if (newArticle == null)
				throw new NullReferenceException("添加文章为 Null");

			// 空标题
			if (String.IsNullOrEmpty(newArticle.Title))
				throw new AfrCustomEerror("文章标题为空");

			// 空摘要
			if (String.IsNullOrEmpty(newArticle.Summary))
				throw new AfrCustomEerror("文章摘要为空");

			// 空内容
			if (String.IsNullOrEmpty(newArticle.TextContent))
				throw new AfrCustomEerror("文章内容为空");

			// 空发送人
			if (String.IsNullOrEmpty(newArticle.PostUser))
				throw new AfrCustomEerror("文章发送人为空");
		}
	}
}