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Article #550

Re: indexed sequential files

#550
From: Christopher Clark
Date: Mon, 23 Mar 1998 00:00
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Peter van der Linden wrote:
> >Does anybody knows if there is any available java class to manage
> >indexed sequential files?
> I have not heard of anyone writing one, but a search on Gamelan
> may yield more info.

  Actually, there's a book out in bookstores (entitled "Java
Algorithms", I think), that builds a basic indexed-sequential file
structure with a B-Tree and Serialization as the data format.  As
somebody who never gets a clear answer as to what data to store
initially, I LIKE THIS!

> I bet it would be very simple to whisk up the basics of Indexed
> Sequential Access using a hashtable to store the key/offset pairs, and 
> keeping that hashtable in a separate file which is read in at the
> start of processing.   Use a random access file to store the data.

  Umm...  Hashtables aren't an ordered storage, which would make the
sequential part difficult...

@>-`--,--
Chris Clark                         kitanin@hotmail.com
Compudata Systems Consulting, Inc.  compudat@cadvision.com
                                    ICQ#9342023

  "Now, I wonder who the deuce that could have been?"
		-Sherlock Holmes
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From: Christopher Clark <compudat@cadvision.com>
Subject: Re: indexed sequential files
Date: 1998/03/23
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