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From David Leader <d.lea...@bio.gla.ac.uk>
Subject Re: Including a derby db within the same jar as the application
Date Tue, 30 Oct 2007 19:46:31 GMT
A PostScript to a PostScript, I wrote:

> A postscript to the solution to the problem:
> jdbc:derby:jar:(MyApp.jar)MyDB
> When I used exe4j to create a Windows .exe from MyApp.jar it worked  
> fine without specifying any derby properties.

But that was only because by chance I had the jar file in the same  
directory. ie the behaviour was just the same as the Mac application  
bundle. When I copied it to a virgin machine next day it couldn't  
find the db. Ouch!

So I had to tell exe4j where derby.system.home was as a VM parameter.  
Fortunately the exe4j help gave the magic address - %EXE4J_TEMPDIR%  
in this case, but obviously it depends on whatever exe maker you are  

Well that, I hope, is that - until my next Derby project. I'm happy  
with the way that Derby has behaved, but I'd like to ask a  
provocative question nevertheless, for which I'll start a new thread.


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