Background: At the moment I am implementing the 'find(cret)' method to build a list of records which match some criteria. This function invokes 'read(recNo)' to grab a record for some processing and catches any RecordNotFoundException's etc etc.
My Assignment:In my assignment '1' indicates deleted, '0' indicates valid record.
Question:When I read in the 'delete byte' the value is empty. Can I safely assume 'empty' implies record is valid, or do I have a bug to sort out? (I was expecting '0').
Joined: Jun 23, 2003
I'm not so sure because all the other details are read OK, theres a total of approx 29/30 records.
Anton, did you have the same assignment as mine?
URLyBird Data file Format The format of data in the database file is as follows:
Start of file 4 byte numeric, magic cookie value. Identifies this as a data file 4 byte numeric, total overall length in bytes of each record 2 byte numeric, number of fields in each record
Schema description section. Repeated for each field in a record: 2 byte numeric, length in bytes of field name n bytes (defined by previous entry), field name 2 byte numeric, field length in bytes end of repeating block
Data section. Repeat to end of file: 1 byte "deleted" flag. 0 implies valid record, 1 implies deleted record Record containing fields in order specified in schema section, no separators between fields, each field fixed length at maximum specified in schema information
End of file
James [ November 26, 2004: Message edited by: James Clinton ]