Discuz.Data/DbHelper.cs

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using System;
using System.Data;
using System.Xml;
using System.Data.Common;
using System.Collections;

using Discuz.Config;
using Discuz.Common;
using Discuz.Common.Generic;

namespace Discuz.Data
{
    /// <summary>
    /// 数据访问助手类
    /// </summary>
    public partial class DbHelper
    {
        #region 私有变量

        /// <summary>
        /// 数据库连接字符串
        /// </summary>
        protected static string m_connectionstring = null;
        /// <summary>
        /// DbProviderFactory实例
        /// </summary>
        private static DbProviderFactory m_factory = null;
        /// <summary>
        /// Discuz!NT数据接口
        /// </summary>
        private static IDbProvider m_provider = null;
        /// <summary>
        /// 查询次数统计
        /// </summary>
        private static int m_querycount = 0;
        /// <summary>
        /// Parameters缓存哈希表
        /// </summary>
        private static Hashtable m_paramcache = Hashtable.Synchronized(new Hashtable());
        private static object lockHelper = new object();

        #endregion

#if DEBUG                      
        private static string m_querydetail = "";
        public static string QueryDetail
        {
            get { return m_querydetail; }
            set { m_querydetail = value; }
        }
        private static string GetQueryDetail(string commandText, DateTime dtStart, DateTime dtEnd, DbParameter[] cmdParams)
        {
            string tr = "<tr style=\"background: rgb(255, 255, 255) none repeat scroll 0%; -moz-background-clip: -moz-initial; -moz-background-origin: -moz-initial; -moz-background-inline-policy: -moz-initial;\">";
            string colums = "";
            string dbtypes = "";
            string values = "";
            string paramdetails = "";
            if (cmdParams != null && cmdParams.Length > 0)
            {
                foreach(DbParameter param in cmdParams)