263 lines
9.0 KiB
C#
263 lines
9.0 KiB
C#
using System.Data.OracleClient;
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//using Oracle.DataAccess.Client;
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using System.Data;
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using System;
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using System.Data.Common;
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using System.Reflection;
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using CYQ.Data.Tool;
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using CYQ.Data.Cache;
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namespace CYQ.Data
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{
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internal class OracleDal : DbBase
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{
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/// <summary>
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/// 区分Oracle11和Oracle12的Dll名称。
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/// </summary>
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public static string ManagedName = "Managed";
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public OracleDal(ConnObject co)
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: base(co)
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{
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}
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protected override void AddReturnPara()
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{
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if (!Com.Parameters.Contains("ResultCount"))
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{
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AddParameters("ResultCount", DBNull.Value, DbType.Int32, -1, ParameterDirection.Output);//记录总数在最后一位
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}
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if (!Com.Parameters.Contains("ResultCursor"))
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{
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AddCustomePara("ResultCursor", ParaType.Cursor, DBNull.Value, null);
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}
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}
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internal override void AddCustomePara(string paraName, ParaType paraType, object value, string typeName)
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{
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if (IsUseOdpNet)
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{
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AddParaForOdpNet(paraName, paraType, value);
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}
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else
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{
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AddParaForOracleClient(paraName, paraType, value);
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}
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}
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private void AddParaForOracleClient(string paraName, ParaType paraType, object value)
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{
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if (Com.Parameters.Contains(paraName)) { return; }
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OracleParameter para = new OracleParameter();
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para.ParameterName = paraName;
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switch (paraType)
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{
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case ParaType.Cursor:
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case ParaType.OutPut:
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if (paraType == ParaType.Cursor)
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{
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para.OracleType = OracleType.Cursor;
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}
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else
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{
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para.OracleType = OracleType.NVarChar;
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para.Size = 4000;
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}
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para.Direction = ParameterDirection.Output;
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break;
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case ParaType.ReturnValue:
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para.OracleType = OracleType.Int32;
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para.Direction = ParameterDirection.ReturnValue;
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break;
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case ParaType.CLOB:
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case ParaType.NCLOB:
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para.OracleType = paraType == ParaType.CLOB ? OracleType.Clob : OracleType.NClob;
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para.Direction = ParameterDirection.Input;
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if (value != null)
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{
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para.Value = value;
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}
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break;
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}
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Com.Parameters.Add(para);
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}
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private void AddParaForOdpNet(string paraName, ParaType paraType, object value)
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{
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Assembly ass = GetAssembly();
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//工厂方法理解点
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DbParameter para = ass.CreateInstance("Oracle." + ManagedName + "DataAccess.Client.OracleParameter") as DbParameter;
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para.ParameterName = paraName;
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switch (paraType)
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{
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case ParaType.Cursor:
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case ParaType.OutPut:
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if (paraType == ParaType.Cursor)
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{
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para.GetType().GetProperty("OracleDbType").SetValue(para, OracleDbType.RefCursor, null);
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}
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else
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{
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para.DbType = DbType.String;
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para.Size = 4000;
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}
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para.Direction = ParameterDirection.Output;
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value = DBNull.Value;
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break;
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case ParaType.ReturnValue:
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para.DbType = DbType.Int32;
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para.Direction = ParameterDirection.ReturnValue;
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value = DBNull.Value;
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break;
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case ParaType.CLOB:
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case ParaType.NCLOB:
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para.GetType().GetProperty("OracleDbType").SetValue(para, paraType == ParaType.CLOB ? OracleDbType.Clob : OracleDbType.NClob, null);
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para.Direction = ParameterDirection.Input;
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if (value != null)
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{
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para.Value = value;
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}
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break;
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}
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Com.Parameters.Add(para);
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}
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public override char Pre
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{
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get
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{
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return ':';
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}
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}
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internal static Assembly GetAssembly()
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{
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object ass = CacheManage.LocalInstance.Get("OracleClient_Assembly");
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if (ass == null)
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{
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//try
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//{
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ass = Assembly.Load("Oracle." + ManagedName + "DataAccess");
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CacheManage.LocalInstance.Set("OracleClient_Assembly", ass, 10080);
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//}
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//catch(Exception err)
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//{
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// Error.Throw(errMsg);
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//}
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}
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return ass as Assembly;
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}
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/// <summary>
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/// 抽象工厂
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/// </summary>
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protected override DbProviderFactory GetFactory(string providerName)
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{
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if (IsUseOdpNet)
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{
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object factory = CacheManage.LocalInstance.Get("OracleClient_Factory");
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if (factory == null)
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{
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Assembly ass = GetAssembly();
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factory = ass.CreateInstance("Oracle." + ManagedName + "DataAccess.Client.OracleClientFactory");
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if (factory == null)
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{
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throw new System.Exception("Can't Create OracleClientFactory in Oracle." + ManagedName + "DataAccess.dll");
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}
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else
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{
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CacheManage.LocalInstance.Set("OracleClient_Factory", factory, 10080);
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}
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}
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return factory as DbProviderFactory;
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}
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else
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{
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return base.GetFactory(providerName);
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}
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}
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/// <summary>
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/// 值-1未初始化；0使用OracleClient；1使用DataAccess；2使用ManagedDataAccess
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/// </summary>
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internal static int clientType = -1;
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private static readonly object lockObj = new object();
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/// <summary>
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/// 是否使用Oracle的ODP.NET组件。
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/// </summary>
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private bool IsUseOdpNet
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{
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get
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{
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if (clientType == -1)
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{
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lock (lockObj)
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{
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if (clientType == -1)
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{
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if (AppConfig.GetConn(base.conn).IndexOf("host", StringComparison.OrdinalIgnoreCase) == -1)
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{
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clientType = 0;
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}
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else
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{
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string path = AppConst.RunFolderPath;
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if (System.IO.File.Exists(path + "Oracle." + ManagedName + "DataAccess.dll"))//Oracle 12
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{
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clientType = 2;
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}
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else if (System.IO.File.Exists(path + "Oracle.DataAccess.dll")) ////Oracle 11
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{
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ManagedName = "";
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clientType = 1;
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}
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else
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{
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clientType = 0;
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Log.WriteLog("Can't find Oracle.ManagedDataAccess.dll or Oracle.DataAccess.dll on the path:" + path);
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}
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}
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}
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}
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}
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return clientType > 0;
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}
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}
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protected override bool IsExistsDbName(string dbName)
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{
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return DBTool.TestConn(GetNewConn(dbName));
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}
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}
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internal enum OracleDbType
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{
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//BFile = 101,
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//Blob = 102,
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//Byte = 103,
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//Char = 104,
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Clob = 105,
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//Date = 106,
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//Decimal = 107,
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//Double = 108,
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//Long = 109,
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//LongRaw = 110,
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//Int16 = 111,
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//Int32 = 112,
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//Int64 = 113,
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//IntervalDS = 114,
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//IntervalYM = 115,
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NClob = 116,
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//NChar = 117,
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//NVarchar2 = 119,
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//Raw = 120,
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RefCursor = 121,
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//Single = 122,
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//TimeStamp = 123,
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//TimeStampLTZ = 124,
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//TimeStampTZ = 125,
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//Varchar2 = 126,
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//XmlType = 127,
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//Array = 128,
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//Object = 129,
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//Ref = 130,
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//BinaryDouble = 132,
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//BinaryFloat = 133,
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}
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} |