void perform() {
final String method = "perform()";
try {
prerequisites();
if (amount.compareTo(thresholdValue) < 0) {
randomSelection();
} else {
biasedRandomSelection();
}
} catch (DataNotFoundException e) {
if (LOG.isErrorEnabled()) {
LOG.error(method, "Data not found: " + e.getEMVTag(), e);
}
}
}
void doVelocityChecking() {
final String method = "doVelocityChecking()";
try {
int lowerLimit =
BinaryNumber.toInt(transaction.getData(EMVTag.LOWER_CONSECUTIVE_OFFLINE_LIMIT));
int upperLimit =
BinaryNumber.toInt(transaction.getData(EMVTag.UPPER_CONSECUTIVE_OFFLINE_LIMIT));
int lastOnlineATC = readLastOnlineATC();
if (lastOnlineATC == 0) {
indicateNewCard();
}
int atc = readATC();
if (LOG.isInfoEnabled()) {
LOG.info(method, "ATC: " + atc + ", Last Online ATC: " + lastOnlineATC);
}
int consecutiveOffline = atc - lastOnlineATC;
TVR tvr = transaction.getTVR();
if (consecutiveOffline > lowerLimit) {
tvr.getByte4().lowerConsecutiveOfflineLimitExceeded();
}
if (consecutiveOffline > upperLimit) {
tvr.getByte4().upperConsecutiveOfflineLimitExceeded();
}
} catch (IOException e) {
if (LOG.isErrorEnabled()) {
LOG.error(method, "Error reading data from ICC", e);
}
} catch (ProcessingStateException e) {
if (LOG.isErrorEnabled()) {
LOG.error(method, "Error reading data from ICC", e);
}
TVR tvr = transaction.getTVR();
tvr.getByte4().lowerConsecutiveOfflineLimitExceeded();
tvr.getByte4().upperConsecutiveOfflineLimitExceeded();
} catch (DataNotFoundException e) {
if (LOG.isDebugEnabled()) {
LOG.debug(method, "Data not found: " + e.getEMVTag());
}
}
}