namespace WIS.Base.Data
{
/// <summary>
/// <table style="font-size:12px">
/// <tr><td><b>文 件 名</b>：DbObject.cs</td></tr>
/// <tr><td><b>功能描述</b>：数据层基类，提供对底层数据的基本操作</td></tr>
/// <tr><td><b>创 建 人</b>：夏春涛 xchuntao@163.com qq:23106676</td></tr>
/// <tr><td><b>创建时间</b>：2005-05-28 </td></tr>
/// </table>
/// </summary>
public class DbObject
{
#region 成员变量
/// <summary>
/// <table style="font-size:12px">
/// <tr><td><b>功能描述</b>：Oracle数据连接对象</td></tr>
/// <tr><td><b>创 建 人</b>：夏春涛 </td></tr>
/// <tr><td><b>创建时间</b>：2005-05-28 </td></tr>
/// </table>
/// </summary>
protected OracleConnection Connection;
/// <summary><table style="font-size:12px">
/// <tr><td><b>功能描述</b>：数据连接字符串</td></tr>
/// <tr><td><b>创 建 人</b>：夏春涛 </td></tr>
/// <tr><td><b>创建时间</b>：2005-05-28 </td></tr>
/// </table></summary>
private string connectionString;
#endregion
#region 构造函数
/// <summary><table style="font-size:12px">
/// <tr><td><b>功能描述</b>：构造函数，使用配置文件中的默认数据连接字符串ConnectionString，初始化数据连接对象 </td></tr>
/// <tr><td><b>创 建 人</b>：夏春涛 </td></tr>
/// <tr><td><b>创建时间</b>：2005-05-28 </td></tr>
/// </table></summary>
public DbObject()
{
connectionString = ConfigurationSettings.AppSettings.Get("ConnectionString");//从Web.Config中取得的连接字符串
Connection = new OracleConnection(connectionString);
}
/// <summary><table style="font-size:12px">
/// <tr><td><b>功能描述</b>：构造函数，根据指定的数据连接字符串，初始化数据连接对象</td></tr>
/// <tr><td><b>创 建 人</b>：夏春涛 </td></tr>
/// <tr><td><b>创建时间</b>：2005-05-28 </td></tr>
/// </table></summary>
/// <param name="newConnectionString">数据连接字符串</param>
public DbObject( string newConnectionString )
{
connectionString = newConnectionString;
Connection = new OracleConnection( connectionString );
}
#endregion
#region 私有方法
/// <summary><table style="font-size:12px">
/// <tr><td><b>功能描述</b>：创建一个OracleCommand对象，用于生成OracleDataReader </td></tr>
/// <tr><td><b>创 建 人</b>：夏春涛 </td></tr>
/// <tr><td><b>创建时间</b>：2005-05-28 </td></tr>
/// </table></summary>
/// <param name="storedProcName">存储过程名称</param>
/// <param name="parameters">存储过程的参数对象列表（数组）</param>
/// <returns>OracleCommand对象</returns>
private OracleCommand BuildCommand(string storedProcName, IDataParameter[] parameters)
{
OracleCommand command = new OracleCommand( storedProcName, Connection );
command.CommandType = CommandType.StoredProcedure;
foreach (OracleParameter parameter in parameters)
{
command.Parameters.Add( parameter );
}
return command;
}
#endregion
#region 运行存储过程
/// <summary>
/// <table style="font-size:12px">
/// <tr><td><b>功能描述</b>：运行存储过程，获取影响行数，返回存储过程运行结果 </td></tr>
/// <tr><td><b>创 建 人</b>：夏春涛 </td></tr>
/// <tr><td><b>创建时间</b>：2005-05-28 </td></tr>
/// </table>
/// </summary>
/// <param name="storedProcName">存储过程名称</param>
/// <param name="parameters">存储过程的参数对象列表（数组）</param>
/// <param name="rowsAffected">出参：执行存储过程所影响的记录行数</param>
/// <returns>存储过程的运行结果</returns>
public object RunProcedure(string storedProcName, IDataParameter[] parameters, out int rowsAffected )
{
object result;
//if(Connection.State.ToString() == "Closed") Connection.Open();
Connection.Open();
OracleCommand command = BuildCommand( storedProcName, parameters );
rowsAffected = command.ExecuteNonQuery();
//如果有"ReturnValue"参数则返回值，否则返回null
bool blnHasReturn = false;
for (int i=0;i<parameters.Length;i++)
{
if (parameters[i].Direction == ParameterDirection.ReturnValue)
{
blnHasReturn = true;
break;
}
}
if (blnHasReturn)
result = command.Parameters["ReturnValue"].Value;
else
result = null;
Connection.Close();
return result;
}
/// <summary><table style="font-size:12px">
/// <tr><td><b>功能描述</b>：运行存储过程，返回产生的OracleDataReader对象 </td></tr>
/// <tr><td><b>创 建 人</b>：夏春涛 </td></tr>
/// <tr><td><b>创建时间</b>：2005-05-28 </td></tr>
/// </table></summary>
/// <param name="storedProcName">存储过程名称</param>
/// <param name="parameters">存储过程的参数对象列表（数组）</param>
/// <returns>OracleDataReader对象</returns>
public OracleDataReader RunProcedure(string storedProcName, IDataParameter[] parameters )
{
OracleDataReader returnReader;
Connection.Open();
OracleCommand command = BuildCommand( storedProcName, parameters );
command.CommandType = CommandType.StoredProcedure;
returnReader = command.ExecuteReader();
//connection.Close();
return returnReader;
}
/// <summary><table style="font-size:12px">
/// <tr><td><b>功能描述</b>：运行存储过程，创建一个DataSet对象，
/// 将运行结果存入指定的DataTable中，返回DataSet对象 </td></tr>
/// <tr><td><b>创 建 人</b>：夏春涛 </td></tr>
/// <tr><td><b>创建时间</b>：2005-05-28 </td></tr>
/// </table></summary>
/// <param name="storedProcName">存储过程名称</param>
/// <param name="parameters">存储过程的参数对象列表（数组）</param>
/// <param name="tableName">数据表名称</param>
/// <returns>DataSet对象</returns>
public DataSet RunProcedure(string storedProcName, IDataParameter[] parameters, string tableName )
{
DataSet dataSet = new DataSet();
Connection.Open();
OracleDataAdapter sqlDA = new OracleDataAdapter();
sqlDA.SelectCommand = BuildCommand( storedProcName, parameters );
sqlDA.Fill( dataSet, tableName );
Connection.Close();
return dataSet;
}
/// <summary><table style="font-size:12px">
/// <tr><td><b>功能描述</b>：运行存储过程，将运行结果存入已有DataSet对象的指定表中，无返回值 </td></tr>
/// <tr><td><b>创 建 人</b>：夏春涛 </td></tr>
/// <tr><td><b>创建时间</b>：2005-05-28 </td></tr>
/// </table></summary>
/// <param name="storedProcName">存储过程名称</param>
/// <param name="parameters">存储过程的参数对象列表（数组）</param>
/// <param name="dataSet">DataSet对象</param>
/// <param name="tableName">数据表名称</param>
public void RunProcedure(string storedProcName, IDataParameter[] parameters, DataSet dataSet, string tableName )
{
Connection.Open();
OracleDataAdapter sqlDA = new OracleDataAdapter();
sqlDA.SelectCommand = BuildCommand( storedProcName, parameters );
sqlDA.Fill( dataSet, tableName );
Connection.Close();
}
#endregion
#region 运行SQL语句
/// <summary><table style="font-size:12px">
/// <tr><td><b>功能描述</b>：运行与写数据库相关的SQL语句，返回影响行数 </td></tr>
/// <tr><td><b>创 建 人</b>：夏春涛 </td></tr>
/// <tr><td><b>创建时间</b>：2005-05-28 </td></tr>
/// </table></summary>
/// <param name="sqlString">SQL语句</param>
/// <returns>影响行数</returns>
public int ExecNonQuery(string sqlString)
{
int RowAffected;
//if(Connection.State.ToString() == "Closed") Connection.Open();
Connection.Open();
OracleCommand command = new OracleCommand( sqlString, Connection );
RowAffected = command.ExecuteNonQuery();
Connection.Close();
return RowAffected;
}
/// <summary><table style="font-size:12px">
/// <tr><td><b>功能描述</b>：运行SQL语句，返回OracleDataReader对象 </td></tr>
/// <tr><td><b>创 建 人</b>：夏春涛 </td></tr>
/// <tr><td><b>创建时间</b>：2005-05-28 </td></tr>
/// </table></summary>
/// <param name="sqlString">SQL语句</param>
/// <returns>SqlDataReader对象</returns>
public OracleDataReader ExecSqlString(string sqlString)
{
OracleDataReader returnReader;
//if(Connection.State.ToString() == "Closed") Connection.Open();
Connection.Open();
OracleCommand command = new OracleCommand( sqlString, Connection );
returnReader = command.ExecuteReader();
//connection.Close();
return returnReader;
}
/// <summary><table style="font-size:12px">
/// <tr><td><b>功能描述</b>：运行SQL语句，返回DataSet对象 </td></tr>
/// <tr><td><b>创 建 人</b>：夏春涛 </td></tr>
/// <tr><td><b>创建时间</b>：2005-05-28 </td></tr>
/// </table></summary>
/// <param name="string">SQL语句</param>
/// <param name="tableName">数据表名称</param>
/// <returns>DataSet对象</returns>
public DataSet ExecSqlString(string sqlString, string tableName )
{
DataSet dataSet = new DataSet();
//if (Connection.State.ToString() == "Closed") Connection.Open();
Connection.Open();
OracleDataAdapter sqlDA = new OracleDataAdapter();
sqlDA.SelectCommand = new OracleCommand( sqlString, Connection );
sqlDA.Fill( dataSet, tableName );
Connection.Close();
return dataSet;
}
/// <summary><table style="font-size:12px">
/// <tr><td><b>功能描述</b>：运行SQL语句，将运行结果存入已有DataSet对象的指定表中，无返回值 </td></tr>
/// <tr><td><b>创 建 人</b>：夏春涛 </td></tr>
/// <tr><td><b>创建时间</b>：2005-05-28 </td></tr>
/// </table></summary>
/// <param name="sqlString">SQL语句</param>
/// <param name="dataSet">DataSet对象</param>
/// <param name="tableName">数据表名称</param>
public void ExecSqlString(string sqlString, DataSet dataSet, string tableName )
{
//if (Connection.State.ToString() == "Closed") Connection.Open();
Connection.Open();
OracleDataAdapter sqlDA = new OracleDataAdapter();
sqlDA.SelectCommand = new OracleCommand( sqlString, Connection );
sqlDA.Fill( dataSet, tableName );
Connection.Close();
}
/// <summary><table style="font-size:12px">
/// <tr><td><b>功能描述</b>：运行SQL语句，返回查询结果的第一行的第一列，忽略其它行或列 </td></tr>
/// <tr><td><b>创 建 人</b>：夏春涛 </td></tr>
/// <tr><td><b>创建时间</b>：2005-05-28 </td></tr>
/// </table></summary>
/// <param name="sqlString">SQL语句</param>
/// <returns>影响行数</returns>
public object ExecScalar(string sqlString)
{
object returnScalar;
//if (Connection.State.ToString() == "Closed") Connection.Open();
Connection.Open();
OracleCommand command = new OracleCommand( sqlString, Connection );
returnScalar = command.ExecuteScalar();
//Connection.Close();
return returnScalar;
}
#endregion
#region 关闭数据连接
/// <summary><table style="font-size:12px">
/// <tr><td><b>功能描述</b>：关闭数据连接 </td></tr>
/// <tr><td><b>创 建 人</b>：夏春涛 </td></tr>
/// <tr><td><b>创建时间</b>：2005-05-28 </td></tr>
/// </table></summary>
public void Close()
{
if(Connection.State.ToString() == "Open")
Connection.Close();
}
#endregion
#region 析构函数
/// <summary><table style="font-size:12px">
/// <tr><td><b>功能描述</b>：析构函数，善后处理，释放数据连接 </td></tr>
/// <tr><td><b>创 建 人</b>：夏春涛 </td></tr>
/// <tr><td><b>创建时间</b>：2005-05-28 </td></tr>
/// </table></summary>
~DbObject()
{
if(Connection.State.ToString() == "Open")
Connection.Close();
Connection.Dispose();
}
#endregion