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From "David Smiley (JIRA)" <>
Subject [jira] Commented: (IO-71) [io] PipedUtils
Date Mon, 11 Feb 2008 06:02:08 GMT


David Smiley commented on IO-71:

Sorry if I was not clear in my description.  I do in fact use PipedInput & Output streams
within my code to do much of the work.  I went to use them straight-up on a project but then
found some shortcomings (not necessarily a problem for everyone out there but for my project
any way).  There are two things that those JDK classes don't do: IOException and close() propagation.
 The reader of a PipedInputStream won't get the actual IOException of the problem if the other
side of the pipe pukes for whatever reason.  And closing the PipedInputStream doesn't close
a source InputStream from where the data actually came from in the first place.  And by the
way, the reading and writing needs to occur on separate threads which can be awkward.  My
PipedUtils wraps that up neatly to make all this easy.  See PipedUtilsTest which goes back
and forth through this process with a a bear minimum of code.

> [io] PipedUtils
> ---------------
>                 Key: IO-71
>                 URL:
>             Project: Commons IO
>          Issue Type: Improvement
>          Components: Utilities
>         Environment: Operating System: All
> Platform: All
>            Reporter: David Smiley
>            Priority: Minor
>             Fix For: 2.x
>         Attachments:
> I developed some nifty code that takes an OutputStream and sort  of  reverses it as if
it were an 
> InputStream.  Error passing and  handling  close is dealt with.  It needs another thread
to do the  work 
> which  runs in parallel.  It uses Piped streams.  I created  this because I  had to conform

> GZIPOutputStream to my framework  which demanded an  InputStream.
> See URL to source.

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