1) Have Reader Interface with read(), ... etc methods.
2) Create a concrete class for each type of record with Reader implementation.
3) Have Factory which will return a record type based on key.
Next,
in main or some other method...
FileStream<forInput2GBFile> List <listOfRecords> For all Records { Record record=RecordFactory.getRecord(Type); record.read(FileStream); listofRecords.add(record); }
Now you have all records in hand.
Advantages: ------------------------ 1) In future you can add more record types. 2) the record implementation is isolated. 3) fully encapsulated. 4) No fixed length as 50 chars. Specify the record length in the record class, so every record may have variable length of record size. 5) If you have any header then it will serve as Type input for Factory.
Post what you have so far so we can see exactly where you are stuck. What does it do or not do that isn't right?
A good question is never answered. It is not a bolt to be tightened into place but a seed to be planted and to bear more seed toward the hope of greening the landscape of the idea. John Ciardi
