[Quickfix-developers] checking for field before getting it?

[Rob K. <ro...@ri...>]

is there a way to check if a field exists in a message before trying to =
extract it.  For example the following code extracts FIX info into a =
data structure.  if one of the fields I try to extract are missing, my =
app will send a reject message.  without looking at the actual fix =
message string, I would like to see if a field is there before I try to =
get it.  If a particular field is not there, I can maybe fill it in with =
the correct data.  Any help would be appreciated.

public void Update(Fix42.SecurityStatus inMsg){
if(inMsg !=3D null)
{
	mSymbol =3D inMsg.getSymbol();
	mSecurityID =3D inMsg.getSecurityID();
	mSecurityType =3D inMsg.getSecurityType();
	mTradingSessionID =3D inMsg.getTradingSessionID();
	mUnsolicitedUndicator =3D inMsg.getUnsolicitedIndicator();
	mSecurityTradingstatus =3D inMsg.getSecurityTradingStatus();
	//mTransactTime =3D inMsg.getTransactTime();
	//mSecurityExchange =3D inMsg.getSecurityExchange();
	//mSecurityDesc =3D inMsg.getSecurityDesc();
	switch(mSecurityType.getValue())
	{
		case "OPT":
			mMaturityMonthYear =3D inMsg.getMaturityMonthYear();
			mMaturityDay =3D inMsg.getMaturityDay();
			mPutOrCall =3D inMsg.getPutOrCall();
			mStrikePrice =3D inMsg.getStrikePrice();
		break;
		case "FUT":
			mMaturityMonthYear =3D inMsg.getMaturityMonthYear();
			mMaturityDay =3D inMsg.getMaturityDay();
			break;
		}
	}=09
}