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From Marvin Humphrey <>
Subject Re: VInt's as prefix. Was: bytecount as prefix
Date Thu, 11 May 2006 15:24:34 GMT

On May 11, 2006, at 8:02 AM, Yonik Seeley wrote:

> Of course there is that *little* detail of backward compatability ;-)

There is that.  :)

Between using bytecounts as String prefixes, transitioning from  
modified UTF-8 to standard UTF-8, and potentially changing the  
definition of VInt, there are a lot of backards incompatible changes  
looming for the I/O classes.

Maybe we should consider loading differing subclasses of IndexInput/ 
IndexOutput based on the detected file format version?  If this were  
C, I'd use function pointers.  What's the best way to approximate  
that in Java?

Marvin Humphrey
Rectangular Research

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