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Hello dudes, i have to read and write a big text file, column delimited, every line is a very complex object and i must serialize that object to such line and read it back.
Does anyone here know a very good library or framework to the job?
Here is an example how it should be:
100050003peter norton 0004325234534543fdsfsdfsd545346645sdgfsdgsdfg
434333453lincoln a. 45435634gsdfgsdfgdf6564576gdfgdfgdfghdfghdfhg
Regards,
Edson
What are those lines supposed to mean? What are the delimeters? That gibberish hardly counts as an example, especially not with any specification or definitions ...Quote:
Originally Posted by lottalava
kind regards,
Jos
Its just a flat file delimited by field length.
Most programmers think of delimiters as special characters used to separate fields/records. Record layouts with fixed sized fields are another thing.
Then use multiple String.substring(...) methods to get each field.Quote:
Its just a flat file delimited by field length.
My idea is to use a kind of library or framework to process my POJOs and write then to a file, simple, just that.
Is this talking about the flat file you posted?Quote:
every line is a very complex object and i must serialize that object to such line and read it back.
How much processing is done to each record?
What is output after the processing?
What kind of library would be of any help?
Sounds like an old fashion data processing program:
read a record
process record
write a record
Yes it is, i found a library which would fill my needs, you put annotations in your POJO and that library write or read a file based in what you specify, it looks pretty handy. The problem is that it isn´t maintained by one year!
jfilehelpers