/// <summary>
/// 查询
/// </summary>
/// <returns></returns>
public DataTable Select(MySqlCommand cmd)
{
if (cmd == null)
{
throw new ArgumentNullException("cmd");
}
cmd.Connection = MysqlDBConnection.Current;
lock (cmd.Connection)
{
try
{
if (cmd.Connection.State != ConnectionState.Open)
{
cmd.Connection.Open();
}
using (MySqlDataAdapter da = new MySqlDataAdapter(cmd))
{
DataTable dt = new DataTable();
da.Fill(dt);
return(dt);
}
}
catch (MySqlException e)
{
if (!MysqlSDLHelper.Failback(e)) // 在MSSQL建立链接时出现网路相关问题
{
throw e;
}
return(this.Select(cmd));
}
}
}
/// <summary>
/// 更新
/// </summary>
/// <param name="cmd">命名行</param>
/// <returns></returns>
public int UpdateReturnInt(MySqlCommand cmd)
{
if (cmd == null)
{
throw new ArgumentNullException("cmd");
}
cmd.Transaction = this.Transaction;
return(MysqlSDLHelper.ExecuteNonQuery(cmd, this.Connection));
}
/// <summary>
/// 删除
/// </summary>
/// <returns></returns>
public bool Delete(MySqlCommand cmd)
{
if (cmd == null)
{
throw new ArgumentNullException("cmd");
}
cmd.Transaction = this.Transaction;
//
return(MysqlSDLHelper.ExecuteNonQuery(cmd, this.Connection) > 0);
}
/// <summary>
/// 插入一行
/// </summary>
/// <returns></returns>
public bool Insert(object value, string table)
{
if (value == null || string.IsNullOrEmpty(table))
{
throw new ArgumentException();
}
using (MySqlCommand cmd = MysqlSDLHelper.CreateInsert(value, table))
{
return(this.Insert(cmd));
}
}
/// <summary>
/// 更新
/// </summary>
/// <param name="value">映射的对象</param>
/// <param name="table">表</param>
/// <param name="key">主键</param>
/// <param name="where">条件</param>
/// <returns></returns>
public bool Update(object value, string table, string key, string where)
{
if (value == null || string.IsNullOrEmpty(table) || string.IsNullOrEmpty(key))
{
throw new ArgumentException();
}
using (MySqlCommand cmd = MysqlSDLHelper.CreateUpdate(value, table, key, where))
{
return(this.Update(cmd));
}
}
/// <summary>
/// 更新
/// </summary>
/// <param name="procedure">存储过程</param>
/// <param name="value">参数</param>
/// <returns></returns>
public bool Update(string procedure, object value)
{
if (string.IsNullOrEmpty(procedure))
{
throw new ArgumentException("procedure");
}
if (value == null)
{
throw new ArgumentNullException("value");
}
return(this.Update(MysqlSDLHelper.GetParameters(value), procedure));
}
/// <summary>
/// 插入一行
/// </summary>
/// <returns></returns>
public object InsertScalar(MySqlCommand cmd, params MySqlParameter[] parameters)
{
if (cmd == null)
{
throw new ArgumentNullException("cmd");
}
if (parameters != null)
{
cmd.Parameters.AddRange(parameters);
}
cmd.Transaction = this.Transaction;
return(MysqlSDLHelper.ExecuteScalar(cmd, this.Connection));
}