/// <summary>
/// 此函数只能在从库数据库连接中进行
/// </summary>
/// <param name="action"></param>
public static object ExecuteScalarSlave(CommandType commandType, string commandText, Action <DbCommand> onExecuted = null, params DbParameter[] commandParameters)
{
object result = null;
void Transfer(Exception ex)
{
if (InstanceSlave != null && InstanceSlave.Pool.ConnectionList.Count > 0)
{
result = InstanceSlave.ExecuteScalar(commandType, commandText, onExecuted, commandParameters);
}
else
{
result = InstanceMaster.ExecuteScalar(commandType, commandText, onExecuted, commandParameters);
}
}
try
{
Transfer(null);
}
catch (System.TimeoutException te)
{
WriteLog(te);
Transfer(te);
}
catch (System.Net.Sockets.SocketException ex)
{
WriteLog(ex);
Transfer(ex);
}
return(result);
}
/// <summary>
/// 此函数只能在从库数据库连接中进行
/// </summary>
/// <param name="action"></param>
public static void ExecuteDataReaderSlave(Action <DbDataReader> action, CommandType commandType, string commandText, Action <DbCommand> onExecuted = null, params DbParameter[] commandParameters)
{
void Transfer(Exception ex)
{
if (InstanceSlave != null && InstanceSlave.Pool.ConnectionList.Count > 0)
{
InstanceSlave.ExecuteDataReader(action, commandType, commandText, onExecuted, commandParameters);
}
else
{
InstanceMaster.ExecuteDataReader(action, commandType, commandText, onExecuted, commandParameters);
}
}
try
{
Transfer(null);
}
catch (System.TimeoutException te)
{
WriteLog(te);
Transfer(te);
}
catch (System.Net.Sockets.SocketException ex)
{
WriteLog(ex);
Transfer(ex);
}
}
/// <summary>
/// 封装多个查询结果集，以管道的形式
/// </summary>
/// <param name="master">是否在主库执行查询</param>
/// <param name="contexts">查询上下文对象</param>
/// <returns></returns>
public static List <List <dynamic> > ExecutePipeLine(bool master, params IQueryPipe[] contexts)
{
CheckNotNull.NotEmpty(contexts, nameof(contexts));
StringBuilder sb = new StringBuilder();
List <DbParameter> parameters = new List <DbParameter>();
foreach (var ctx in contexts)
{
sb.AppendLine(ctx.CommandText);
sb.Append(";");
parameters.AddRange(ctx.ParamList);
}
var cmdText = sb.ToString();
int pipeLine = contexts.Length;
List <List <dynamic> > result = new List <List <dynamic> >();
if (master)
{
CheckNotNull.NotNull(InstanceMaster, nameof(InstanceMaster));
InstanceMaster.ExecuteDataReaderPipe(dr =>
{
ExcutePipeResult(contexts, dr, pipeLine, result);
}, CommandType.Text, cmdText, parameters.ToArray());
}
else
{
CheckNotNull.NotNull(InstanceSlave, nameof(InstanceSlave));
InstanceSlave.ExecuteDataReaderPipe(dr =>
{
ExcutePipeResult(contexts, dr, pipeLine, result);
}, CommandType.Text, cmdText, parameters.ToArray());
}
return(result);
}
/// <summary>
/// 此函数只能在从库数据库连接中进行
/// </summary>
/// <param name="action"></param>
public static int ExecuteNonQuerySlave(CommandType commandType, string commandText, Action <DbCommand> onExecuted = null, params DbParameter[] commandParameters)
{
return(InstanceSlave.ExecuteNonQuery(commandType, commandText, onExecuted, commandParameters));
}