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1232 lines
41 KiB
1232 lines
41 KiB
using System;
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using System.Collections;
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using System.Collections.Specialized;
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using System.Text;
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using System.Data;
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using System.Configuration;
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using System.Reflection;
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using System.Xml;
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namespace DBFactory
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{
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/// <summary>
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/// DBOperator数据库操作对象
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/// 创建者：Richard.Liu
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/// 20130926升级为支持同一个数据库连接支持多线程调用，所有函数全部重写
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/// </summary>
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public class DBOperator
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{
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object lockob = new object();//20120510
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#region 原创
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private IDictionary settings;
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private string _connstring;
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private DBFactory _dbf;
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private IDbConnection _dbconn;
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private IDbTransaction _dbtrans;
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private string _DBConnInfo;
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private StringBuilder sbsql = new StringBuilder();
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/// <summary>
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/// 数据库操作错误信息
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/// </summary>
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public string DBConnInfo
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{
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get { return _DBConnInfo; }
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//set { _DBConnInfo = value; }
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}
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/// <summary>
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/// 通过读取DBFactory.dll.config创建DBFactory的实例；
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/// 初始化数据库连接字符串ConnString
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/// </summary>
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public DBOperator()
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{
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try
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{
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settings = GetConfig();
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if (settings.Count < 1)
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{
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_DBConnInfo = "数据库工厂的设置参数读取错误!";
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return;
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}
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else
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{
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_connstring = settings["ConnString"].ToString();
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string classname = "DBFactory." + settings["DBFactory"];
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this._dbf = (DBFactory)Assembly.Load("DBFactory").CreateInstance(classname);
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Open();
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}
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}
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catch(Exception ex)
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{
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_DBConnInfo = ex.Message;
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throw ex;
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}
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}
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/// <summary>
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/// 通过读取DBFactory.dll.config创建DBFactory的实例；
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/// 初始化数据库连接字符串ConnString
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/// </summary>
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/// <param name="ConnString">数据库连接参数</param>
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public DBOperator(string ConnString)
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{
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try
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{
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settings = GetConfig();
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if (settings.Count < 1)
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{
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_DBConnInfo = "数据库工厂的设置参数读取错误!";
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return;
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}
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else
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{
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_connstring = settings[ConnString].ToString();
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string classname = "DBFactory." + settings["DBFactory"];
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this._dbf = (DBFactory)Assembly.Load("DBFactory").CreateInstance(classname);
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Open();
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}
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}
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catch (Exception ex)
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{
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_DBConnInfo = ex.Message;
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//throw ex;
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}
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}
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/// <summary>
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/// 通过读取DBFactory.dll.config创建DBFactory的实例；
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/// 初始化数据库连接字符串ConnString
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/// </summary>
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/// <param name="ConnString">数据库连接参数</param>
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/// <param name="DbFactory">数据库类工厂参数</param>
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public DBOperator(string ConnString, string DbFactory)
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{
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try
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{
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settings = GetConfig();
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if (settings.Count < 1)
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{
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_DBConnInfo = "数据库工厂的设置参数读取错误!";
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return;
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}
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else
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{
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_connstring = settings[ConnString].ToString();
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string classname = "DBFactory." + settings[DbFactory];
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this._dbf = (DBFactory)Assembly.Load("DBFactory").CreateInstance(classname);
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Open();
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}
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}
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catch (Exception ex)
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{
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_DBConnInfo = ex.Message;
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//throw ex;
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}
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}
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/// <summary>
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/// 默认传递值参false，代表不连接数据库，只是为了修改数据库连接配置
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/// </summary>
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/// <param name="ConnError"></param>
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public DBOperator(bool ConnError)
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{
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ConnError = false;
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}
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/// <summary>
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/// 获得配置文件路径和文件名
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/// </summary>
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/// <returns></returns>
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private string AppConfig()
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{
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Assembly asm = Assembly.GetCallingAssembly();
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string cfgFile = asm.Location + ".config";
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return cfgFile;
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}
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/// <summary>
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/// 获得指定项（Key）的值
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/// </summary>
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/// <param name="appKey"></param>
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/// <returns></returns>
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public string GetValue(string appKey)
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{
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XmlDocument xDoc = new XmlDocument();
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try
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{
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xDoc.Load(AppConfig());
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XmlNode xNode;
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XmlElement xElem;
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xNode = xDoc.SelectSingleNode("//appSettings");
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xElem = (XmlElement)xNode.SelectSingleNode("//add[@key='" + appKey + "']");
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if (xElem != null)
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return xElem.GetAttribute("value");
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else
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return "";
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}
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catch (Exception)
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{
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return "";
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}
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}
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/// <summary>
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/// 设定指定项的值
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/// </summary>
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/// <param name="AppKey"></param>
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/// <param name="AppValue"></param>
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public void SetValue(string AppKey, string AppValue)
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{
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try
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{
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XmlDocument xDoc = new XmlDocument();
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xDoc.Load(AppConfig());
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XmlNode xNode;
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XmlElement xElem1;
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XmlElement xElem2;
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xNode = xDoc.SelectSingleNode("//appSettings");
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xElem1 = (XmlElement)xNode.SelectSingleNode("//add[@key='" + AppKey + "']");
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if (xElem1 != null)
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{
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xElem1.SetAttribute("value", AppValue);
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}
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else
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{
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xElem2 = xDoc.CreateElement("add");
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xElem2.SetAttribute("key", AppKey);
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xElem2.SetAttribute("value", AppValue);
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xNode.AppendChild(xElem2);
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}
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xDoc.Save(AppConfig());
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}
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catch (Exception ex)
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{
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throw ex;
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}
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}
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/// <summary>
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/// 通过读取XML文档获得DBFactory.dll.config的内容
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/// </summary>
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/// <returns>appSettings所有key的值</returns>
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private IDictionary GetConfig()
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{
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// Open and parse configuration file for specified
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// assembly, returning collection to caller for future
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// use outside of this class.
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//
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try
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{
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Assembly asm= Assembly.GetCallingAssembly();
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string cfgFile = asm.Location + ".config";
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const string nodeName = "appSettings";
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XmlDocument doc = new XmlDocument();
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doc.Load(cfgFile);//20100726
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XmlNodeList nodes = doc.GetElementsByTagName(nodeName);
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foreach (XmlNode node in nodes)
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{
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if (node.LocalName == nodeName)
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{
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DictionarySectionHandler handler = new DictionarySectionHandler();
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return (IDictionary)handler.Create(null, null, node);
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}
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}
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}
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catch(Exception ex)
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{
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throw(ex);
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}
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return (null);
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}
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/// <summary>
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/// 打开数据库联接
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/// </summary>
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/// <returns>ｔｒｕｅ代表连接成功</returns>
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public bool Open()
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{
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try
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{
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_dbconn = _dbf.GetDBConnection();
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if (_dbconn.State == ConnectionState.Open)
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{
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return true;
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}
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_dbconn.ConnectionString = _connstring;
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_dbconn.Open();
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return true;
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}
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catch (Exception ex)
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{
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_DBConnInfo = ex.Message;
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//throw ex;
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return false;
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}
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}
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/// <summary>
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/// 关闭数据库连接
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/// </summary>
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public void Close()
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{
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try
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{
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//20130620if (_dbconn.State == ConnectionState.Open)
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//{
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_dbconn.Close();
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//}
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}
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catch (Exception ex)
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{
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_DBConnInfo = ex.Message;
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throw ex;
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}
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}
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/// <summary>
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/// 数据库事务开始
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/// </summary>
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/// <param name="LockAction">指定连接的事务索行为</param>
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public void TransBegin(IsolationLevel LockAction)
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{
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try
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{
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Open();//20091218
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_dbtrans = _dbf.GetDBTransaction(LockAction);
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}
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catch (Exception ex)
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{
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Close();//20091218
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throw ex;
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}
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}
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/// <summary>
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/// 数据库事务开始；默认的连接的事务索行为IsolationLevel.ReadCommitted
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/// 在正在读取数据时保持共享锁
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/// </summary>
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public void TransBegin()
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{
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try
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{
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Open();//20091218
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_dbtrans = _dbf.GetDBTransaction(IsolationLevel.ReadCommitted);
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}
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catch (Exception ex)
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{
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Close();//20091218
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throw ex;
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}
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}
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/// <summary>
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/// 事务提交
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/// </summary>
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public void TransCommit()
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{
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try
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{
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_dbtrans.Commit();
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}
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catch(Exception ex)
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{
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throw ex;
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}
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}
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/// <summary>
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/// 事务回滚
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/// </summary>
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public void TransRollback()
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{
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try
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{
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_dbtrans.Rollback();
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}
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catch (Exception ex)
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{ throw ex; }
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}
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/// <summary>
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/// 执行SQL语句，该命令最好在数据层应用；在业务逻辑层最好用模型类作为参数和返回值
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/// </summary>
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/// <param name="sql"></param>
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/// <returns></returns>
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public DataSet ExceSQL(string sql)
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{//20100108
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lock (lockob)////20130306richard.liu
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{
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DataSet ds;
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sbsql.Clear();
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sbsql.Append(sql);
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try
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{
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//20091218
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Open();
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IDbCommand dbc = _dbf.GetDBCommand();
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if (_dbtrans != null)
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{
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dbc.Transaction = _dbtrans;
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}
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dbc.Connection = _dbconn;
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dbc.CommandText = sbsql.ToString();
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IDbDataAdapter ida = _dbf.GetDataAdapter(dbc);
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//20100108
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ds = new DataSet();
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ida.Fill(ds);
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return ds;
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}
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catch (Exception ex)
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{
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//20091218
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Close();
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_DBConnInfo = ex.Message;
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throw ex;
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//return null;
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}
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finally
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{//20100108
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ds = null;
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}
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}
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}
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#endregion
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#region 借用网络改型
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#region 公用方法
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public int GetMaxID(string FieldName, string TableName)
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{
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lock (lockob)
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{
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string fn = FieldName; string tn = TableName;
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string strsql = "select max(" + fn + ")+1 from " + tn;
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object obj = GetSingle(strsql);
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if (obj == null)
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{
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return 1;
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}
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else
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{
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return int.Parse(obj.ToString());
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}
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}
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}
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public int GetMaxID(string FieldName, string TableName, string ConditionFieldName, string ConditionValue)
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{
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lock (lockob)
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{
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string fieldName = FieldName; string tableName = TableName; string conditionFieldName = ConditionFieldName; string conditionValue = ConditionValue;
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string strsql = "select max(" + fieldName + ")+1 from " + tableName + " where " + conditionFieldName + "=" + conditionValue;
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object obj = GetSingle(strsql);
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if (obj == null)
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{
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return 1;
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}
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else
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{
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return int.Parse(obj.ToString());
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}
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}
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}
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public bool Exists(string strSql)
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{
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lock (lockob)
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{
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sbsql.Clear();
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sbsql.Append(strSql);
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object obj = GetSingle(sbsql.ToString());
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int cmdresult;
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if ((Object.Equals(obj, null)) || (Object.Equals(obj, System.DBNull.Value)))
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{
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cmdresult = 0;
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}
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else
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{
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cmdresult = int.Parse(obj.ToString());
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}
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if (cmdresult == 0)
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{
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return false;
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}
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else
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{
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return true;
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}
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}
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}
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public bool Exists(string strSql, params IDbDataParameter[] cmdParms)
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{
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lock (lockob)
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{
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string strsql=strSql; IDbDataParameter[] cmdParms1=cmdParms;
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object obj = GetSingle(strsql, cmdParms1);
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int cmdresult;
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if ((Object.Equals(obj, null)) || (Object.Equals(obj, System.DBNull.Value)))
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{
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cmdresult = 0;
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}
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else
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{
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cmdresult = int.Parse(obj.ToString());
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}
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if (cmdresult == 0)
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{
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return false;
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}
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else
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{
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return true;
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}
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}
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}
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#endregion
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#region 执行简单SQL语句
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/// <summary>
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/// 执行SQL语句，返回影响的记录数
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/// </summary>
|
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/// <param name="SQLString">SQL语句</param>
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/// <returns>影响的记录数</returns>
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public int ExecuteSql(string SQLString)
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{
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lock (lockob)//20120510
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{
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sbsql.Clear();
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sbsql.Append(SQLString);
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using (IDbCommand cmd = _dbf.GetDBCommand(sbsql.ToString(), _dbconn))
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{
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try
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{
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Open();//20091218
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if (_dbtrans != null)
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{
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cmd.Transaction = _dbtrans;
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}
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int rows = cmd.ExecuteNonQuery();
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return rows;
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}
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catch (Exception E)
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{
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Close();//20091218
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throw E;
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}
|
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}
|
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}
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}
|
|
|
|
/// <summary>
|
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/// 执行SQL语句，设置命令的执行等待时间
|
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/// </summary>
|
|
/// <param name="SQLString"></param>
|
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/// <param name="Times"></param>
|
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/// <returns></returns>
|
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public int ExecuteSqlByTime(string SQLString, int Times)
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{
|
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lock (lockob)
|
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{
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sbsql.Clear();
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sbsql.Append(SQLString);
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int tim = Times;
|
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using (IDbCommand cmd = _dbf.GetDBCommand(sbsql.ToString(), _dbconn))
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{
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try
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{
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Open();
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cmd.CommandTimeout = tim;
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int rows = cmd.ExecuteNonQuery();
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return rows;
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}
|
|
catch (Exception E)
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{
|
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Close();
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throw new Exception(E.Message);
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}
|
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}
|
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}
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}
|
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|
|
/// <summary>
|
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/// 执行多条SQL语句，实现数据库事务。
|
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/// </summary>
|
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/// <param name="SQLStringList">多条SQL语句</param>
|
|
public void ExecuteSqlTran(ArrayList SQLStringList)
|
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{
|
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lock (lockob)
|
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{
|
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ArrayList sqlStringList = SQLStringList;
|
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Open();
|
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IDbCommand cmd = _dbf.GetDBCommand();//IDbCommand cmd = _dbf.GetDBCommand();
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cmd.Connection = _dbconn;
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TransBegin();
|
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cmd.Transaction = _dbtrans;
|
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try
|
|
{
|
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for (int n = 0; n < sqlStringList.Count; n++)
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{
|
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string strsql = sqlStringList[n].ToString();
|
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if (strsql.Trim().Length > 1)
|
|
{
|
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cmd.CommandText = strsql;
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cmd.ExecuteNonQuery();
|
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}
|
|
}
|
|
TransCommit();
|
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}
|
|
catch (Exception E)
|
|
{
|
|
TransRollback();
|
|
throw new Exception(E.Message);
|
|
}
|
|
}
|
|
|
|
}
|
|
/// <summary>
|
|
/// 执行带一个存储过程参数的SQL语句。
|
|
/// </summary>
|
|
/// <param name="SQLString">SQL语句</param>
|
|
/// <param name="content">参数内容,比如一个字段是格式复杂的文章，有特殊符号，可以通过这个方式添加</param>
|
|
/// <returns>影响的记录数</returns>
|
|
public int ExecuteSql(string SQLString, string content)
|
|
{
|
|
lock (lockob)
|
|
{
|
|
string sqlString = SQLString; string content1 = content;
|
|
IDbCommand cmd = _dbf.GetDBCommand(sqlString, _dbconn);
|
|
IDbDataParameter myParameter = _dbf.GetParameter("@content", DbType.String);
|
|
myParameter.Value = content1;
|
|
cmd.Parameters.Add(myParameter);
|
|
try
|
|
{
|
|
Open();
|
|
int rows = cmd.ExecuteNonQuery();
|
|
return rows;
|
|
}
|
|
catch (Exception E)
|
|
{
|
|
throw new Exception(E.Message);
|
|
}
|
|
finally
|
|
{
|
|
cmd.Dispose();
|
|
Close();
|
|
}
|
|
}
|
|
}
|
|
/// <summary>
|
|
/// 执行带一个存储过程参数的的SQL语句。
|
|
/// </summary>
|
|
/// <param name="SQLString">SQL语句</param>
|
|
/// <param name="content">参数内容,比如一个字段是格式复杂的文章，有特殊符号，可以通过这个方式添加</param>
|
|
/// <returns>影响的记录数</returns>
|
|
public object ExecuteSqlGet(string SQLString, string content)
|
|
{
|
|
lock (lockob)
|
|
{
|
|
string sqlString = SQLString; string content1 = content;
|
|
IDbCommand cmd = _dbf.GetDBCommand(sqlString, _dbconn);
|
|
IDbDataParameter myParameter = _dbf.GetParameter("@content", DbType.String);
|
|
myParameter.Value = content1;
|
|
cmd.Parameters.Add(myParameter);
|
|
try
|
|
{
|
|
Open();
|
|
object obj = cmd.ExecuteScalar();
|
|
if ((Object.Equals(obj, null)) || (Object.Equals(obj, System.DBNull.Value)))
|
|
{
|
|
return null;
|
|
}
|
|
else
|
|
{
|
|
return obj;
|
|
}
|
|
}
|
|
catch (Exception E)
|
|
{
|
|
throw new Exception(E.Message);
|
|
}
|
|
finally
|
|
{
|
|
cmd.Dispose();
|
|
Close();
|
|
}
|
|
}
|
|
}
|
|
/// <summary>
|
|
/// 向数据库里插入图像格式的字段(和上面情况类似的另一种实例)
|
|
/// </summary>
|
|
/// <param name="strSQL">SQL语句</param>
|
|
/// <param name="fs">图像字节,数据库的字段类型为image的情况</param>
|
|
/// <returns>影响的记录数</returns>
|
|
public int ExecuteSqlInsertImg(string strSQL, byte[] fs)
|
|
{
|
|
lock (lockob)
|
|
{
|
|
string strSQL1 = strSQL; byte[] fs1=fs;
|
|
IDbCommand cmd = _dbf.GetDBCommand(strSQL1, _dbconn);
|
|
IDbDataParameter myParameter = _dbf.GetParameter("@fs", DbType.Binary);
|
|
myParameter.Value = fs1;
|
|
cmd.Parameters.Add(myParameter);
|
|
try
|
|
{
|
|
Open();
|
|
int rows = cmd.ExecuteNonQuery();
|
|
return rows;
|
|
}
|
|
catch (Exception E)
|
|
{
|
|
throw new Exception(E.Message);
|
|
}
|
|
finally
|
|
{
|
|
cmd.Dispose();
|
|
Close();
|
|
}
|
|
}
|
|
}
|
|
|
|
/// <summary>
|
|
/// 执行一条计算查询结果语句，返回查询结果（object）。
|
|
/// </summary>
|
|
/// <param name="SQLString">计算查询结果语句</param>
|
|
/// <returns>查询结果（object）</returns>
|
|
public object GetSingle(string SQLString)
|
|
{
|
|
lock (lockob)//20120510
|
|
{
|
|
sbsql.Clear();
|
|
sbsql.Append( SQLString);
|
|
using (IDbCommand cmd = _dbf.GetDBCommand(sbsql.ToString(), _dbconn))
|
|
{
|
|
try
|
|
{
|
|
Open();
|
|
object obj = cmd.ExecuteScalar();
|
|
if ((Object.Equals(obj, null)) || (Object.Equals(obj, System.DBNull.Value)))
|
|
{
|
|
return null;
|
|
}
|
|
else
|
|
{
|
|
return obj;
|
|
}
|
|
}
|
|
catch (Exception e)
|
|
{
|
|
Close();
|
|
throw new Exception(e.Message);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
/// <summary>
|
|
/// 执行查询语句，返回SqlDataReader(使用该方法切记要手工关闭SqlDataReader和连接)
|
|
/// </summary>
|
|
/// <param name="strSQL">查询语句</param>
|
|
/// <returns>SqlDataReader</returns>
|
|
public IDataReader ExecuteReader(string strSQL)
|
|
{
|
|
lock (lockob)
|
|
{
|
|
sbsql.Clear();
|
|
sbsql.Append( strSQL);
|
|
IDbCommand cmd = _dbf.GetDBCommand(sbsql.ToString(), _dbconn);
|
|
try
|
|
{
|
|
Open();
|
|
IDataReader myReader = _dbf.GetDataReader(cmd);
|
|
return myReader;
|
|
}
|
|
catch (Exception e)
|
|
{
|
|
throw new Exception(e.Message);
|
|
}
|
|
//finally //不能在此关闭，否则，返回的对象将无法使用
|
|
//{
|
|
// cmd.Dispose();
|
|
// Close();
|
|
//}
|
|
}
|
|
|
|
}
|
|
/// <summary>
|
|
/// 执行查询语句，返回DataSet
|
|
/// </summary>
|
|
/// <param name="SQLString">查询语句</param>
|
|
/// <returns>DataSet</returns>
|
|
public DataSet Query(string SQLString)
|
|
{
|
|
lock (lockob)
|
|
{
|
|
sbsql.Clear();
|
|
sbsql.Append(SQLString);
|
|
try
|
|
{
|
|
IDbCommand dbc = _dbf.GetDBCommand();
|
|
if (_dbtrans != null)
|
|
{
|
|
dbc.Transaction = _dbtrans;
|
|
}
|
|
dbc.Connection = _dbconn;
|
|
dbc.CommandText = sbsql.ToString();
|
|
IDbDataAdapter ida = _dbf.GetDataAdapter(dbc);
|
|
DataSet ds = new DataSet();
|
|
ida.Fill(ds);
|
|
return ds;
|
|
}
|
|
catch (Exception ex)
|
|
{
|
|
_DBConnInfo = ex.Message;
|
|
throw ex;
|
|
//return null;
|
|
}
|
|
}
|
|
}
|
|
/// <summary>
|
|
/// 执行查询语句，返回DataSet,设置命令的执行等待时间
|
|
/// </summary>
|
|
/// <param name="SQLString"></param>
|
|
/// <param name="Times"></param>
|
|
/// <returns></returns>
|
|
public DataSet Query(string SQLString, int Times)
|
|
{
|
|
lock (lockob)
|
|
{
|
|
string SQLString1 = SQLString; int tim = Times;
|
|
DataSet ds = new DataSet();
|
|
try
|
|
{
|
|
Open();
|
|
IDbCommand dbc = _dbf.GetDBCommand();
|
|
if (_dbtrans != null)
|
|
{
|
|
dbc.Transaction = _dbtrans;
|
|
}
|
|
dbc.Connection = _dbconn;
|
|
dbc.CommandText = SQLString1;
|
|
IDbDataAdapter command = _dbf.GetDataAdapter(dbc);
|
|
command.SelectCommand.CommandTimeout = tim;
|
|
command.Fill(ds);
|
|
}
|
|
catch (Exception ex)
|
|
{
|
|
throw new Exception(ex.Message);
|
|
}
|
|
return ds;
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
#endregion
|
|
|
|
#region 执行带参数的SQL语句
|
|
|
|
/// <summary>
|
|
/// 执行SQL语句，返回影响的记录数
|
|
/// </summary>
|
|
/// <param name="SQLString">SQL语句</param>
|
|
/// <returns>影响的记录数</returns>
|
|
public int ExecuteSql(string SQLString, params IDbDataParameter[] cmdParms)
|
|
{
|
|
lock (lockob)
|
|
{
|
|
string SQLString1 = SQLString; IDbDataParameter[] cmdParms1 = cmdParms;
|
|
using (IDbCommand cmd = _dbf.GetDBCommand())
|
|
{
|
|
try
|
|
{
|
|
PrepareCommand(cmd, _dbconn, null, SQLString1, cmdParms1);
|
|
int rows = cmd.ExecuteNonQuery();
|
|
cmd.Parameters.Clear();
|
|
return rows;
|
|
}
|
|
catch (Exception E)
|
|
{
|
|
throw new Exception(E.Message);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
/// <summary>
|
|
/// 执行多条SQL语句，实现数据库事务。
|
|
/// </summary>
|
|
/// <param name="SQLStringList">SQL语句的哈希表（key为sql语句，value是该语句的SqlParameter[]）</param>
|
|
public void ExecuteSqlTran(Hashtable SQLStringList)
|
|
{
|
|
lock (lockob)
|
|
{Hashtable SQLStringList1=SQLStringList;
|
|
Open();
|
|
TransBegin();
|
|
IDbCommand cmd = _dbf.GetDBCommand();
|
|
try
|
|
{
|
|
//循环
|
|
foreach (DictionaryEntry myDE in SQLStringList1)
|
|
{
|
|
string cmdText = myDE.Key.ToString();
|
|
IDbDataParameter[] cmdParms = (IDbDataParameter[])myDE.Value;
|
|
PrepareCommand(cmd, _dbconn, _dbtrans, cmdText, cmdParms);
|
|
int val = cmd.ExecuteNonQuery();
|
|
cmd.Parameters.Clear();
|
|
|
|
TransCommit();
|
|
}
|
|
}
|
|
catch
|
|
{
|
|
TransRollback();
|
|
throw;
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
|
|
|
|
/// <summary>
|
|
/// 执行一条计算查询结果语句，返回查询结果（object）。
|
|
/// </summary>
|
|
/// <param name="SQLString">计算查询结果语句</param>
|
|
/// <returns>查询结果（object）</returns>
|
|
public object GetSingle(string SQLString, params IDbDataParameter[] cmdParms)
|
|
{
|
|
lock (lockob)
|
|
{
|
|
string SQLString1 = SQLString; IDbDataParameter[] cmdParms1 = cmdParms;
|
|
using (IDbCommand cmd = _dbf.GetDBCommand())
|
|
{
|
|
try
|
|
{
|
|
PrepareCommand(cmd, _dbconn, null, SQLString1, cmdParms1);
|
|
object obj = cmd.ExecuteScalar();
|
|
cmd.Parameters.Clear();
|
|
if ((Object.Equals(obj, null)) || (Object.Equals(obj, System.DBNull.Value)))
|
|
{
|
|
return null;
|
|
}
|
|
else
|
|
{
|
|
return obj;
|
|
}
|
|
}
|
|
catch (Exception e)
|
|
{
|
|
throw new Exception(e.Message);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
/// <summary>
|
|
/// 执行查询语句，返回SqlDataReader (使用该方法切记要手工关闭SqlDataReader和连接)
|
|
/// </summary>
|
|
/// <param name="strSQL">查询语句</param>
|
|
/// <returns>SqlDataReader</returns>
|
|
public IDataReader ExecuteReader(string SQLString, params IDbDataParameter[] cmdParms)
|
|
{
|
|
lock (lockob)
|
|
{
|
|
string SQLString1=SQLString; IDbDataParameter[] cmdParms1 = cmdParms;
|
|
IDbCommand cmd = _dbf.GetDBCommand();
|
|
try
|
|
{
|
|
PrepareCommand(cmd, _dbconn, null, SQLString1, cmdParms1);
|
|
IDataReader myReader = _dbf.GetDataReader(cmd);
|
|
cmd.Parameters.Clear();
|
|
return myReader;
|
|
}
|
|
catch (Exception e)
|
|
{
|
|
throw new Exception(e.Message);
|
|
}
|
|
//finally //不能在此关闭，否则，返回的对象将无法使用
|
|
//{
|
|
// cmd.Dispose();
|
|
// Close();
|
|
//}
|
|
|
|
}
|
|
}
|
|
|
|
/// <summary>
|
|
/// 执行查询语句，返回DataSet
|
|
/// </summary>
|
|
/// <param name="SQLString">查询语句</param>
|
|
/// <returns>DataSet</returns>
|
|
public DataSet Query(string SQLString, params IDbDataParameter[] cmdParms)
|
|
{
|
|
lock (lockob)
|
|
{
|
|
string SQLString1 = SQLString; IDbDataParameter[] cmdParms1 = cmdParms;
|
|
IDbCommand cmd = _dbf.GetDBCommand();
|
|
PrepareCommand(cmd, _dbconn, null, SQLString1, cmdParms1);
|
|
IDataAdapter da = _dbf.GetDataAdapter(cmd);
|
|
|
|
DataSet ds = new DataSet();
|
|
try
|
|
{
|
|
da.Fill(ds);
|
|
cmd.Parameters.Clear();
|
|
}
|
|
catch (Exception ex)
|
|
{
|
|
throw new Exception(ex.Message);
|
|
}
|
|
return ds;
|
|
|
|
}
|
|
}
|
|
|
|
|
|
private void PrepareCommand(IDbCommand cmd, IDbConnection conn, IDbTransaction trans, string cmdText,
|
|
|
|
IDbDataParameter[] cmdParms)
|
|
{
|
|
Open();
|
|
cmd.Connection = _dbconn;
|
|
cmd.CommandText = cmdText;
|
|
if (trans != null)
|
|
cmd.Transaction = trans;
|
|
cmd.CommandType = CommandType.Text;//cmdType;
|
|
if (cmdParms != null)
|
|
{
|
|
|
|
|
|
foreach (IDbDataParameter parameter in cmdParms)
|
|
{
|
|
if ((parameter.Direction == ParameterDirection.InputOutput || parameter.Direction ==
|
|
|
|
ParameterDirection.Input) &&
|
|
(parameter.Value == null))
|
|
{
|
|
parameter.Value = DBNull.Value;
|
|
}
|
|
cmd.Parameters.Add(parameter);
|
|
}
|
|
}
|
|
}
|
|
|
|
#endregion
|
|
|
|
#region 存储过程操作
|
|
|
|
/// <summary>
|
|
/// 执行存储过程 (使用该方法切记要手工关闭SqlDataReader和连接)
|
|
/// </summary>
|
|
/// <param name="storedProcName">存储过程名</param>
|
|
/// <param name="parameters">存储过程参数</param>
|
|
/// <returns>SqlDataReader</returns>
|
|
public IDataReader RunProcedure(string storedProcName, IDataParameter[] parameters)
|
|
{
|
|
lock (lockob)
|
|
{
|
|
string storedProcName1 = storedProcName; IDataParameter[] parameters1 = parameters;
|
|
IDataReader returnReader;
|
|
Open();
|
|
IDbCommand command = BuildQueryCommand(_dbconn, storedProcName1, parameters1);
|
|
command.CommandType = CommandType.StoredProcedure;
|
|
returnReader = _dbf.GetDataReader(command);
|
|
//Close(); 不能在此关闭，否则，返回的对象将无法使用
|
|
return returnReader;
|
|
}
|
|
|
|
}
|
|
|
|
|
|
/// <summary>
|
|
/// 执行存储过程
|
|
/// </summary>
|
|
/// <param name="storedProcName">存储过程名</param>
|
|
/// <param name="parameters">存储过程参数</param>
|
|
/// <param name="tableName">DataSet结果中的表名</param>
|
|
/// <returns>DataSet</returns>
|
|
public DataSet RunProcedure(string storedProcName, IDataParameter[] parameters, string tableName)
|
|
{
|
|
lock (lockob)
|
|
{
|
|
string storedProcName1 = storedProcName; IDataParameter[] parameters1 = parameters; string tableName1 = tableName;
|
|
DataSet dataSet = new DataSet();
|
|
Open();
|
|
IDbDataAdapter sqlDA = _dbf.GetDataAdapter();
|
|
sqlDA.SelectCommand = BuildQueryCommand(_dbconn, storedProcName1, parameters1);
|
|
sqlDA.Fill(dataSet);
|
|
Close();
|
|
return dataSet;
|
|
}
|
|
|
|
}
|
|
/// <summary>
|
|
/// 获取管理任务表的主键索引
|
|
/// </summary>
|
|
/// <param name="tableName">表名称</param>
|
|
/// <returns></returns>
|
|
public int GetManageTableIndex(string tableName)
|
|
{
|
|
lock (lockob)
|
|
{
|
|
string tableName1 = tableName;
|
|
IDbCommand command;
|
|
// IDataParameter[] arParms = new IDataParameter[3];//20101028
|
|
IDataParameter[] arParms = new IDataParameter[2];//20201028
|
|
|
|
arParms[0] = _dbf.GetParameter("@pTableName", DbType.String);
|
|
arParms[0].Value = tableName1;
|
|
arParms[0].DbType = DbType.String;
|
|
|
|
|
|
arParms[1] = _dbf.GetParameter("@pReturnValue", DbType.Int32);
|
|
arParms[1].Direction = ParameterDirection.Output;
|
|
arParms[1].DbType = DbType.Int32;
|
|
//arParms[2] = _dbf.GetParameter("@pKeyFieldName", DbType.String);//20101028
|
|
//arParms[2].Value = "CONTROL_APPLY_ID";//20101028
|
|
//arParms[2].DbType = DbType.String;//20101028
|
|
try
|
|
{
|
|
command = BuildQueryCommand(_dbconn, "UP_GET_TABLEID", arParms);
|
|
command.ExecuteNonQuery();
|
|
|
|
}
|
|
catch (Exception ex)
|
|
{
|
|
throw (ex);
|
|
}
|
|
|
|
return (int)arParms[1].Value;
|
|
}
|
|
}
|
|
public int GetManageTableIndex(string tableName, bool IfSQLServer)
|
|
{
|
|
lock (lockob)
|
|
{
|
|
string tableName1 = tableName; bool IfSQLServer1 = IfSQLServer;
|
|
if (IfSQLServer1 == true)
|
|
{//20130510 IO_CONTROL_APPLY
|
|
return GetManageTableIndex(tableName1);
|
|
}
|
|
DataView DV = ExceSQL("select IO_CONTROL_APPLY_SEQ.NEXTVAL FROM DUAL").Tables[0].DefaultView;
|
|
try
|
|
{
|
|
if (DV.Count > 0)
|
|
{
|
|
return Convert.ToInt32(DV[0][0]);
|
|
}
|
|
else
|
|
{
|
|
return 1;
|
|
}
|
|
|
|
}
|
|
catch (Exception ex)
|
|
{
|
|
throw (ex);
|
|
}
|
|
|
|
}
|
|
}
|
|
|
|
public DataSet RunProcedure(string storedProcName, IDataParameter[] parameters, string tableName, int Times)
|
|
{
|
|
lock (lockob)
|
|
{
|
|
string storedProcName1 = storedProcName; IDataParameter[] parameters1 = parameters; string tableName1 = tableName; int Times1 = Times;
|
|
DataSet dataSet = new DataSet();
|
|
Open();
|
|
IDbDataAdapter sqlDA = _dbf.GetDataAdapter();
|
|
sqlDA.SelectCommand = BuildQueryCommand(_dbconn, storedProcName1, parameters1);
|
|
sqlDA.SelectCommand.CommandTimeout = Times1;
|
|
sqlDA.Fill(dataSet);
|
|
Close();
|
|
return dataSet;
|
|
}
|
|
}
|
|
|
|
|
|
/// <summary>
|
|
/// 构建 SqlCommand 对象(用来返回一个结果集，而不是一个整数值)
|
|
/// </summary>
|
|
/// <param name="_dbconn">数据库连接</param>
|
|
/// <param name="storedProcName">存储过程名</param>
|
|
/// <param name="parameters">存储过程参数</param>
|
|
/// <returns>SqlCommand</returns>
|
|
private IDbCommand BuildQueryCommand(IDbConnection _dbconn, string storedProcName, IDataParameter[]
|
|
|
|
parameters)
|
|
{
|
|
IDbCommand command = _dbf.GetDBCommand(storedProcName, _dbconn);
|
|
command.CommandType = CommandType.StoredProcedure;
|
|
foreach (IDataParameter parameter in parameters)
|
|
{
|
|
if (parameter != null)
|
|
{
|
|
// 检查未分配值的输出参数,将其分配以DBNull.Value.
|
|
if ((parameter.Direction == ParameterDirection.InputOutput || parameter.Direction ==
|
|
|
|
ParameterDirection.Input) &&
|
|
(parameter.Value == null))
|
|
{
|
|
parameter.Value = DBNull.Value;
|
|
}
|
|
command.Parameters.Add(parameter);
|
|
}
|
|
}
|
|
|
|
return command;
|
|
}
|
|
|
|
///// <summary>
|
|
///// 执行存储过程，返回影响的行数
|
|
///// </summary>
|
|
///// <param name="storedProcName">存储过程名</param>
|
|
///// <param name="parameters">存储过程参数</param>
|
|
///// <param name="rowsAffected">影响的行数</param>
|
|
///// <returns></returns>
|
|
//public int RunProcedure(string storedProcName, IDataParameter[] parameters, out int rowsAffected)
|
|
//{
|
|
|
|
// int result;
|
|
// Open();
|
|
// IDbCommand command = BuildIntCommand(_dbconn, storedProcName, parameters);
|
|
// rowsAffected = command.ExecuteNonQuery();
|
|
// result = (int)command.Parameters["ReturnValue"].Value;
|
|
// //Close();
|
|
// return result;
|
|
|
|
//}
|
|
|
|
///// <summary>
|
|
///// 创建 SqlCommand 对象实例(用来返回一个整数值)
|
|
///// </summary>
|
|
///// <param name="storedProcName">存储过程名</param>
|
|
///// <param name="parameters">存储过程参数</param>
|
|
///// <returns>SqlCommand 对象实例</returns>
|
|
//private IDbCommand BuildIntCommand(IDbConnection _dbconn, string storedProcName, IDataParameter[] parameters)
|
|
//{
|
|
// IDbCommand command = BuildQueryCommand(_dbconn, storedProcName, parameters);
|
|
// command.Parameters.Add(_dbf.GetParameter("ReturnValue",
|
|
// SqlDbType.Int, 4, ParameterDirection.ReturnValue,
|
|
// false, 0, 0, string.Empty, DataRowVersion.Default, null));
|
|
// return command;
|
|
//}
|
|
#endregion
|
|
|
|
|
|
#endregion
|
|
|
|
}
|
|
}
|