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From "Jo Inge Arnes (JIRA)" <j...@apache.org>
Subject [jira] Created: (LUCENENET-8) Throwing an exception as a result of a normal situation is extremely bad in .net
Date Sat, 01 Jul 2006 01:43:29 GMT
Throwing an exception as a result of a normal situation is extremely bad in .net
--------------------------------------------------------------------------------

         Key: LUCENENET-8
         URL: http://issues.apache.org/jira/browse/LUCENENET-8
     Project: Lucene.Net
        Type: Task

 Environment: Windows XP, Visual Studio 2003
    Reporter: Jo Inge Arnes


At the end of the FastCharStream.Refill() method, it says:

int charsRead = input.Read(buffer, newPosition, buffer.Length - newPosition);
if (charsRead <= 0)
   throw new System.IO.IOException("read past eof");
else
   bufferLength += charsRead;

When I run Lucene in the debugger, this causes an exception to be thrown all the time.
To me it looks like it is thrown as a result of a normal situation, not because of some critical
error.

Is this correct?

If this is the case, then the code is horrible. Throwing an exception in .NET is extremely
slow, and should never be thrown as a result of a normal situation. I repeat: "extremely slow"

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