zoukankan      html  css  js  c++  java
  • 一个数据库异常的扩展函数帮助类

    /// <summary>
    	/// 数据库例外的扩展函数
    	/// </summary>
    	public static class DataExceptionExtensions {
    		/// <summary>
    		/// 判断例外是否由指定的唯一索引冲突引起
    		/// </summary>
    		/// <param name="dataEx">例外</param>
    		/// <param name="indexName">索引名称</param>
    		/// <returns></returns>
    		public static bool IsDuplicateFor(this DataException dataEx, string indexName) {
    			Exception ex = dataEx;
    			while (ex.InnerException != null) {
    				ex = ex.InnerException;
    			}
    			return ex.Message?.Contains(indexName) ?? false;
    		}
    
    		/// <summary>
    		/// 判断例外是否由外键依赖引起
    		/// </summary>
    		/// <param name="dataEx">例外</param>
    		/// <returns></returns>
    		public static bool IsForgenKeyError(this DataException dataEx) {
    			Exception ex = dataEx;
    			while (ex.InnerException != null) {
    				ex = ex.InnerException;
    			}
    			return ex.Message?.Contains("violates foreign key") ?? false;
    		}
    
    		/// <summary>
    		/// 判断例外是否由外键依赖引起并且消息包含指定字符串
    		/// </summary>
    		/// <param name="dataEx">例外</param>
    		/// <param name="messageContains">判断是否包含的字符串</param>
    		/// <returns></returns>
    		public static bool IsForgenKeyError(this DataException dataEx, string messageContains) {
    			Exception ex = dataEx;
    			while (ex.InnerException != null) {
    				ex = ex.InnerException;
    			}
    			return ((ex.Message?.Contains("violates foreign key") ?? false) &&
    				(ex.Message?.Contains(messageContains) ?? false));
    		}
    
    		/// <summary>
    		/// 判断例外是否由事务冲突引起的
    		/// </summary>
    		/// <param name="dataEx">例外</param>
    		/// <returns></returns>
    		public static bool IsConcurrentUpdate(this DataException dataEx) {
    			Exception ex = dataEx;
    			while (ex.InnerException != null) {
    				ex = ex.InnerException;
    			}
    			return ex.Message?.Contains("concurrent update") ?? false;
    		}
    	}
    

      

  • 相关阅读:
    Java垃圾回收机制
    Mybatis 通用 Mapper 和 Spring 集成
    MyBatis:SQL语句中的foreach的详细介绍
    PageHelper补充
    Mybatis分页插件PageHelper
    定时任务
    权限框架Apache Shiro 和 Spring Security
    Navicat操作数据库时一直显示加载中
    BigDecimal使用中的一些注意事项
    WPF应用程序嵌入第三方exe
  • 原文地址:https://www.cnblogs.com/x-poior/p/5388812.html
Copyright © 2011-2022 走看看