From: Warren Young
Date: September 19 2005 7:04pm
Subject: Re: locable.h: strange design dessision??
List-Archive: http://lists.mysql.com/plusplus/4957
Message-Id: <432F0BA4.7090703@etr-usa.com>
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pps wrote:
> 
> As far as I understand this will allow people to download newer 
> mysqlpp.dll and just replace it without rebuilding, am I correct?

Within a major version, yes, that's the idea.

> What's ABI stands for?? :)

Application Binary Interface.  That is, a program using a dynamic or 
shared library version of MySQL++ has expectations such as object layout 
that must be preserved within a major version.  Essentially, we're 
promising not to break the ABI until v3.x.

> How many overrides for this class there might be? (1 or 2 more).

I anticipate only 2 right now, both of which I mentioned in my previous 
message.

> Anyways, threadingmodel classes could be all inside headers without .cpp 
> files... if that solves this problem

No, it doesn't help, because Lockable is used as a base class.  If its 
object layout changes, the ABI of classes derived from it also change.