public static void parseLine(int lineNum, String line) throws IOException {
MessageHeader msgHdr = new MessageHeader(line.substring(0, 12));
MessageTypeHeader msgTypeHdr = new MessageTypeHeader(line.substring(12, 104));
int declaredMessageLength = msgHdr.getMessageLength();
int declaredRecordDataLength = msgTypeHdr.getRecordDataLength();
// Validation to ensure the line contents match the lengths declaration.
// 12 chars before the message length declaration.
// 104 chars before the record data length declaration.
if (declaredMessageLength + 12 == line.length()
&& declaredRecordDataLength + 104 == line.length()) {
writeToLog(lineNum + ": " + "Declared lengths match the actual line length.");
int currPos = 104;
while (true) {
RecordHeader rcdHdr = new RecordHeader(line.substring(currPos, currPos + 20));
int recordLength = rcdHdr.getRecordLength();
currPos = currPos + 20;
Record record;
if (keyMap.get(rcdHdr.getRecordType()) != null) {
// String recordText = line.substring(currPos - 1, currPos + recordLength - 1);
String recordText = line.substring(currPos, currPos + recordLength);
String recordReferenceId = "|";
// Build the reference identifier based on the record keys defined in the Key Map
for (Key key : keyMap.get(rcdHdr.getRecordType())) {
recordReferenceId =
recordReferenceId
+ recordText.substring(
key.getKeyPosition(), key.getKeyPosition() + key.getKeyLength())
+ "|";
}
record =
new Record(
rcdHdr.getRecordType(),
recordReferenceId,
rcdHdr.getRecordActionCode(),
recordText);
writeToLog(record.getText().length() + ": " + record.getText());
saveRecordToMap(record);
} else {
writeToLog("Record type " + rcdHdr.getRecordType() + " is not supported.");
}
currPos = currPos + recordLength;
if (currPos >= line.length()) {
break;
}
}
} else {
writeToLog(
lineNum
+ ": "
+ "Line is invalid. Declared message lengths do not match the actual length.");
}
}
