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From Daniel John Debrunner <...@debrunners.com>
Subject Re: corrupt disk io storage factory for testing.
Date Fri, 15 Apr 2005 18:40:32 GMT
Suresh Thalamati wrote:
> 
> Hi,
> 
>  I  am looking at  creating a new corruptible storage factory by
> extending the engine's disk storage factory.
>  Purpose of this is to do explicitly corrupt the  IO and do some
> recovery testing.  Thought ideal place
>  for the corruptible storage factory is to be in the test code utilities
> not in the code line.  But  I ran into a simple obstacle ,
>  constructors in the  org.apache.derby.impl.io.DirFile etc are package
> protected. So I am  unable to extend the disk storage
>  factory classes successfully .

Why not make a proxy storage factory that delegates to another storage
factory, but performs any corruptions you require? Then the corruption
testing would be independent of the underlying storage and not tied to
the current disk implementation.

Dan.



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