461 lines
16 KiB
C#
461 lines
16 KiB
C#
using System;
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using System.Collections.Generic;
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using System.Text;
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//using System.Data.OracleClient;
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using System.Data;
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using Oracle.ManagedDataAccess.Client;
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namespace StockDeduction.AppCode
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{
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public class OracleHelper
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{
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#region 构造函数
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public OracleHelper(string OracleConnStr)
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{
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ConnStr = OracleConnStr;
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}
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public OracleHelper()
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{
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}
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public OracleHelper(string Server, string Port, string Name, string UserName, string UserPwd)
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{
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//传入对应的 服务器名称 实例名 用户名 密码
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ConnStr = "Data Source=(DESCRIPTION =(ADDRESS = (PROTOCOL = TCP)(HOST = " + Server +
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")(PORT = " + Port + "))(CONNECT_DATA =(SERVER = DEDICATED)(SERVICE_NAME = " + Name +
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"))); User ID=" + UserName + "; PassWord=" + UserPwd + ";Connection Timeout = 5;";
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}
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#endregion
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#region 属性信息
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private string ConnStr = null;
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public string ConnString
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{
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set
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{
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ConnStr = value;
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}
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get
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{
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return ConnStr;
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}
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}
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#endregion
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#region 获得表名
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/// <summary>
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/// 获得数据库表名
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/// </summary>
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/// <returns></returns>
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public DataTable GetTableName()
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{
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using (OracleConnection OracleConn = new OracleConnection(ConnStr))
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{
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try
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{
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OracleConn.Open();
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DataTable dt = OracleConn.GetSchema("Tables", null);
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OracleConn.Close();
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return dt;
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}
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catch (Exception ex)
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{
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throw new Exception(ex.Message);
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}
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}
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}
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/// <summary>
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/// 获得数据库表名
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/// </summary>
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/// <returns></returns>
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public DataTable GetViewName()
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{
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using (OracleConnection OracleConn = new OracleConnection(ConnStr))
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{
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try
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{
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OracleConn.Open();
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DataTable dt = OracleConn.GetSchema("Views", null);
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OracleConn.Close();
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return dt;
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}
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catch (Exception ex)
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{
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throw new Exception(ex.Message);
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}
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}
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}
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/// <summary>
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/// 获得数据库表名
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/// </summary>
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/// <returns></returns>
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public DataTable GetTableName_Old()
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{
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using (OracleConnection oleConn = new OracleConnection(ConnStr))
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{
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DataSet ds = new DataSet();
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string SQLString = "select a.TABLE_NAME,b.COMMENTS from user_tables a,user_tab_comments b WHERE a.TABLE_NAME=b.TABLE_NAME order by TABLE_NAME ";
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try
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{
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oleConn.Open();
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OracleDataAdapter oleDa = new OracleDataAdapter(SQLString, oleConn);
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oleDa.Fill(ds, "temp");
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}
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catch (OracleException ex)
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{
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throw new Exception(ex.Message);
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}
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return ds.Tables[0];
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}
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}
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#endregion
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#region 测试连接
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/// <summary>
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/// 测试连接
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/// </summary>
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public void TestConn()
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{
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//测试连接
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using (OracleConnection OracleConn = new OracleConnection(ConnStr))
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{
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using (OracleCommand cmd = new OracleCommand())
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{
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try
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{
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OracleConn.Open();
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}
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catch (OracleException ex)
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{
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throw new Exception(ex.Message);
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}
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finally
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{
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OracleConn.Close();
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}
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}
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}
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}
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#endregion
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#region 执行SQL
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/// <summary>
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/// 执行SQL语句，返回受影响的行数
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/// </summary>
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/// <param name="SQLString">SQL语句</param>
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public int ExcuteSql(string SQLString)
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{
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using (OracleConnection OracleConn = new OracleConnection(ConnStr))
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{
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using (OracleCommand cmd = new OracleCommand(SQLString, OracleConn))
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try
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{
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OracleConn.Open();
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int rows = cmd.ExecuteNonQuery();
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OracleConn.Close();
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return rows;
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}
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catch (OracleException ex)
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{
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throw new Exception(ex.Message);
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}
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}
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}
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#endregion
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#region 执行SQL，返回对应的数据集
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/// <summary>
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/// 执行SQL，返回对应的数据集
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/// </summary>
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/// <param name="SQLString">执行的SQL语句</param>
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/// <param name="TableName">内存中的表名</param>
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/// <returns>返回对应的数据集</returns>
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public DataSet ExcuteSqlGetDataSet(string SQLString, string TableName = "Template")
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{
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using (OracleConnection oleConn = new OracleConnection(ConnStr))
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{
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DataSet ds = new DataSet();
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try
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{
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oleConn.Open();
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OracleDataAdapter oleDa = new OracleDataAdapter(SQLString, oleConn);
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oleDa.Fill(ds, TableName);
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}
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catch (OracleException ex)
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{
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throw new Exception(ex.Message);
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}
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return ds;
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}
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}
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#endregion
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#region 执行SQL事务
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public void ExecuteSqlTran(string SQLString)
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{
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using (OracleConnection conn = new OracleConnection(ConnStr))
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{
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conn.Open();
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using (OracleTransaction trans = conn.BeginTransaction())
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{
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OracleCommand cmd = new OracleCommand();
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cmd.Transaction = trans;
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cmd.Connection = conn;
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try
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{
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//执行SQL
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cmd.CommandText = SQLString;
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cmd.ExecuteNonQuery();
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trans.Commit();
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}
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catch (Exception ex)
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{
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trans.Rollback();
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throw new Exception(ex.Message);
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}
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finally
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{
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cmd.Dispose();
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trans.Dispose();
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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SQL事务
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/// </summary>
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/// <param name="SQLStringArray">SQL数组</param>
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public void ExecuteSqlTran(string[] SQLStringArray)
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{
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using (OracleConnection conn = new OracleConnection(ConnStr))
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{
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conn.Open();
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using (OracleTransaction trans = conn.BeginTransaction())
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{
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OracleCommand cmd = new OracleCommand();
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cmd.Transaction = trans;
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cmd.Connection = conn;
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try
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{
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//执行SQL
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for (int i = 0; i < SQLStringArray.Length; i++)
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{
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cmd.CommandText = SQLStringArray[i];
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cmd.ExecuteNonQuery();
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}
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trans.Commit();
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}
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catch (Exception ex)
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{
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trans.Rollback();
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throw new Exception(ex.Message);
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}
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finally
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{
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cmd.Dispose();
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trans.Dispose();
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}
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}
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}
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}
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public void ExecuteSqlTran(List<string> SQLStringArray)
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{
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using (OracleConnection conn = new OracleConnection(ConnStr))
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{
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conn.Open();
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using (OracleTransaction trans = conn.BeginTransaction())
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{
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OracleCommand cmd = new OracleCommand();
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cmd.Transaction = trans;
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cmd.Connection = conn;
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try
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{
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//执行SQL
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for (int i = 0; i < SQLStringArray.Count; i++)
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{
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cmd.CommandText = SQLStringArray[i].ToString();
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cmd.ExecuteNonQuery();
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}
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trans.Commit();
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}
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catch (Exception ex)
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{
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trans.Rollback();
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throw new Exception(ex.Message);
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}
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finally
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{
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cmd.Dispose();
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trans.Dispose();
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}
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}
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}
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}
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#endregion
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#region 更新数据表
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public void UpdateDataTable(DataTable dt, string SqlStr)
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{
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using (OracleConnection oracleConn = new OracleConnection(ConnStr))
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{
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oracleConn.Open();
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try
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{
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OracleDataAdapter oleDa = new OracleDataAdapter(SqlStr, oracleConn);
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OracleCommandBuilder builder = new OracleCommandBuilder();
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oleDa.Update(dt);
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}
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catch (System.Data.OleDb.OleDbException ex)
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{
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throw new Exception(ex.Message);
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}
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finally
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{
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oracleConn.Close();
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}
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}
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}
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public void UpdateDataTable(DataTable ParentTable, DataTable ChildTable, string[] SqlStr, string mainName)
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{
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using (OracleConnection oleConn = new OracleConnection(ConnStr))
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{
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DataSet oDs = new DataSet();
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oleConn.Open();
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try
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{
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//父表
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OracleDataAdapter oleDa = new OracleDataAdapter(SqlStr[0], oleConn);
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OracleCommandBuilder builder = new OracleCommandBuilder(oleDa);
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//子表
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OracleDataAdapter oleDa1 = new OracleDataAdapter(SqlStr[1], oleConn);
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OracleCommandBuilder builder1 = new OracleCommandBuilder(oleDa);
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oDs.Tables.Add(ParentTable);
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oDs.Tables.Add(ChildTable);
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oDs.Relations.Add(new DataRelation("ParentChild", oDs.Tables[0].Columns[mainName], oDs.Tables[1].Columns[mainName]));
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oleDa.Update(oDs.Tables[0]);
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oleDa1.Update(oDs.Tables[1]);
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}
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catch (OracleException ex)
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{
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throw new Exception(ex.Message);
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}
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finally
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{
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oleConn.Close();
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}
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}
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}
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#endregion
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#region 执行SQL,返回第一行第一列
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/// <summary>
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/// 执行SQL语句，返回受影响的行数
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/// </summary>
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/// <param name="SQLString">SQL语句</param>
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public object ExcuteSqlBackData(string SQLString)
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{
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using (OracleConnection oleConn = new OracleConnection(ConnStr))
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{
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using (OracleCommand cmd = new OracleCommand())
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{
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try
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{
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cmd.Connection = GetConn(oleConn);
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cmd.CommandText = SQLString;
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object rows = cmd.ExecuteScalar();
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CloseConn(oleConn);
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return rows;
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}
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catch (OracleException ex)
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{
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throw new Exception(ex.Message);
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}
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}
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}
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}
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#endregion
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#region 打开数据库及关闭数据库
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public OracleConnection GetConn(OracleConnection oleConn)
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{
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if (oleConn.State == ConnectionState.Closed)
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{
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oleConn.Open();
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}
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return oleConn;
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}
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public void CloseConn(OracleConnection oleConn)
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{
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if (oleConn.State == ConnectionState.Open)
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{
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oleConn.Close();
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}
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}
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#endregion
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#region 修正表的类型
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public void DBTable_GetSchemaFixDataType(DataTable dataTable, string tableName)
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{
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DataTable dataTable2 = ExcuteSqlGetDataSet("Select * from " + tableName + " where 1=2", "temp").Tables[0];
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//DataTable dataTable2 = _DataBaseHelper.ExecuteDataSet("Select * from " + tableName + " where 1=2").Tables[0];
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bool flag = false;
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foreach (DataRow dataRow in dataTable.Rows)
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{
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dataRow["Column_DefaultValue"] = dataRow["Column_DefaultValue"].ToString().Replace(" ", "").Replace("\"", "");
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dataRow["Column_IsNullable"] = dataRow["Column_IsNullable"].ToString().ToLower().Replace("no", "False").Replace("yes", "True").Replace("n", "False").Replace("y", "True").Replace("false", "False").Replace("true", "True");
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dataRow["Column_IsKey"] = dataRow["Column_IsKey"].ToString().ToLower().Replace("no", "False").Replace("yes", "True").Replace("n", "False").Replace("y", "True").Replace("false", "False").Replace("true", "True");
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if (string.IsNullOrEmpty(dataRow["Column_Comment"].ToString()))
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{
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dataRow["Column_Comment"] = dataRow["Column_Name"];
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}
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foreach (DataColumn dataColumn in dataTable2.Columns)
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{
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if (dataRow["Column_Name"].ToString().ToLower() == dataColumn.ColumnName.ToLower())
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{
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if (dataRow["Column_DataType"].ToString() != "System.Double")
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{
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dataRow["Column_DataType"] = dataColumn.DataType.ToString();
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break;
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}
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break;
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}
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}
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if (dataRow["Column_IsKey"].ToString() == "True")
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{
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flag = true;
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}
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}
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if (!flag)
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{
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string text = string.Empty;
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if (tableName.IndexOf("_") >= 0)
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{
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text = tableName.Substring(tableName.IndexOf("_") + 1);
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}
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else
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{
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text = tableName;
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}
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text += "_ID";
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foreach (DataRow dataRow2 in dataTable.Rows)
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{
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if (dataRow2["Column_Name"].ToString() == text)
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{
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dataRow2["Column_IsKey"] = "True";
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break;
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}
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}
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}
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dataTable.AcceptChanges();
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}
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#endregion
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}
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}
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