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From "jxf jxf" <djsoft....@gmail.com>
Subject Re: [jira] Created: (LUCENENET-8) Throwing an exception as a result of a normal situation is extremely bad in .net
Date Sat, 01 Jul 2006 05:24:10 GMT
i think it can :
int charsRead = input.Read(buffer, newPosition, buffer.Length -
newPosition);
if (charsRead > 0)
  bufferLength += charsRead;



2006/7/1, Jo Inge Arnes (JIRA) <jira@apache.org>:
>
> 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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>
>

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