[xsd-users] multiple compressed data streams

[Tamir Bard]

Hi Boris, 

There are 8 streams of data that needs to be stored.
1. Each stream of data if of type LONG
2. Each stream of data is stored in (consecutive) blocks of 256K each.
3. Each stream of data may have 1 block (minimum) or up to 64 blocks of data (each block might have a slightly different size).
4. Since the total amount of data can be big, we need to parse/read those blocks of data locations only when the code asks for ant not 


Once the file is written, at later time those 8 streams of data blocks needs to editable (reducing number of blocks or adding).
Note: each data block will be compressed before written.

Can all of this be done using codesynthesis xsd?
Do you have an example code that does that?

Thanks, 
T. Bard


-----Original Message-----
From: Boris Kolpackov [mailto:boris at codesynthesis.com] 
Sent: Tuesday, July 30, 2013 3:57 AM
To: Tamir Bard
Cc: xsd-users at codesynthesis.com
Subject: Re: [xsd-users] multiple compressed data streams

Hi Tamir,

Tamir Bard <TAMIRB at MarvinTest.com> writes:

> I would like to store and read multiple compressed data streams.
> Each compressed data stream needs to be accessed (read and write) in 
> small chunks.

This is a very generic description of what you trying to do. Do you want to "store" as a file on disk, in a database, something else? What is a "data stream"? A file stream maybe? What is a "chunk"? Is it an XML document, a fragment of a document, something else? Without knowing more specifics, it is hard to suggest how it can be achieved.

You may find interesting the 'compression' and 'streaming' 
examples in the examples/cxx/tree/ directory.

Boris