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From Daniel John Debrunner <...@apache.org>
Subject Re: Collation implementation WAS Re: Should COLLATION attribute related code go in BasicDatabase?
Date Thu, 15 Mar 2007 19:08:52 GMT
Mamta Satoor wrote:
> Dan, I am responding to this without thinking about a whole lot but 
> wanted to put it out. With this scheme of putting collation inside the 
> existing character type, are we going to impact the performance of 
> Derby's default collation which is UCS_BASIC? The goal from the 
> beginning has been to leave current SQLChar implementation as unaware of 
> the new collation requirement as possible. It's possible that your 
> suggestion does take that into account but I thought I would ask the 
> question if this approach is going to impact the performance of existing 
> Pre 10.3 upgraded to 10.3 or new 10.3 databases created with default 
> collation?

Not sure what you mean by "putting the collation inside the existing 
character type", but I think there will be no performance impact on 
SQLChar, I'm assuming all the setup is done when the activation is 
initialized. It's just flipping which runtime class does the comparisons.


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