public static List <DBInterface.RTDBInterface.SignalComm> ReadTagList(string filter)
{
List <DBInterface.RTDBInterface.SignalComm> results = new List <DBInterface.RTDBInterface.SignalComm>();
DBInterface.RTDBInterface.LongPI.RTDbHelper rtdbhelperpi = null;
DBInterface.RTDBInterface.LongPGIM.RTDbHelper rtdbhelperpgim = null;
DBInterface.RTDBInterface.RTDbHelper rtdbhelper = null;
try
{
string tagfilter = filter; //这条语句经过测试可用。会返回所有标签
if (APPConfig.rtdb_Type == "PI") //PI数据库的情况下，使用PI长连接类
{
rtdbhelperpi = new DBInterface.RTDBInterface.LongPI.RTDbHelper();
results = rtdbhelperpi.GetTagList(tagfilter);
}
else if (APPConfig.rtdb_Type == "PGIM") //PGIM数据库的情况下，使用PI长连接类
{
rtdbhelperpgim = new DBInterface.RTDBInterface.LongPGIM.RTDbHelper();
results = rtdbhelperpgim.GetTagList(tagfilter);
}
else
{
rtdbhelper = new DBInterface.RTDBInterface.RTDbHelper();
results = rtdbhelper.GetTagList(tagfilter);
}
return(results);
}
catch (Exception ex)
{
ErrorFlag = true;
//RTDBHelper在底层（pgimhelper、goldenhelper）对异常进行处理，将异常信息记录到rtdbhelper.Exception中，并将异常转发
//在这里，如果Exception不为nulll，则说明底层捕捉到了异常信息，应该将底层捕捉到的Exception计入log
//如果Exception为null，则说明底层没有捕捉到异常信息。这里应该记录ex内容
string messageStr;
messageStr = String.Format("DAO层ReadTagList()错误：---------->");
logHelper.Error(messageStr);
string exceptionStr = "";
if (APPConfig.rtdb_Type == "PI") //PI数据库的情况下，使用PI长连接类
{
exceptionStr = rtdbhelperpi.Exception;
}
else if (APPConfig.rtdb_Type == "PGIM") //PGIM数据库的情况下，使用PI长连接类
{
exceptionStr = rtdbhelperpgim.Exception;
}
else
{
exceptionStr = rtdbhelper.Exception;
}
if (exceptionStr != null)
{
messageStr = String.Format("错误信息：rtdbhelper.GetTagList()错误。{0}", rtdbhelper.Exception);
}
else
{
messageStr = String.Format("错误信息：ReadTagList()未知错误。{0}", ex.ToString());
}
logHelper.Error(messageStr);
return(null);
}
}
