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From "Niklas Therning (JIRA)" <j...@apache.org>
Subject [jira] Resolved: (DIRMINA-146) ByteBuffer.wrap(byte[] n, int offset, int length) calls clear() on the wrapped NIO buffer
Date Sun, 18 Dec 2005 18:21:34 GMT
     [ http://issues.apache.org/jira/browse/DIRMINA-146?page=all ]
     
Niklas Therning resolved DIRMINA-146:
-------------------------------------

    Resolution: Fixed

> ByteBuffer.wrap(byte[] n, int offset, int length) calls clear() on the wrapped NIO buffer
> -----------------------------------------------------------------------------------------
>
>          Key: DIRMINA-146
>          URL: http://issues.apache.org/jira/browse/DIRMINA-146
>      Project: Directory MINA
>         Type: Bug
>     Versions: 0.9
>     Reporter: Niklas Therning
>     Assignee: Niklas Therning
>      Fix For: 0.9.1

>
> clear() is called on the underlying NIO buffer wrapping the byte array. The consequence
is that the position is set to 0 and the limit is set to capacity (the length of the wrapped
array). Since this method should behave exactly as the NIO ByteBuffer equivalent the position
should be set to offset and the limit should be set to offset+length.
> Whenever an existing NIO ByteBuffer is wrapped in a MINA ByteBuffer the NIO buffer is
cleared. That may not always be desirable. I suggest that the call to clear() is removed from
DefaultByteBuffer.init(). That would take care of the bug described above. If the user wishes
to wrap an NIO buffer she would have to make sure it is cleared if that is desired.
> NOTE: This isn't a problem in MINA 0.8. clear() isn't called on the wrapped NIO buffer
in DefaultByteBuffer.init(). Does anyone know why this was introduced in 0.9?

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