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From "George Harley (JIRA)" <j...@apache.org>
Subject [jira] Closed: (HARMONY-849) [classlib][nio] FileChannel.read(ByteBuffer[] dsts) returns incorrect value and doesn't set the position of ByteBuffer[] in some cases.
Date Mon, 17 Jul 2006 14:04:22 GMT
     [ http://issues.apache.org/jira/browse/HARMONY-849?page=all ]

George Harley closed HARMONY-849.
---------------------------------


Verified by Andrew.

> [classlib][nio] FileChannel.read(ByteBuffer[] dsts) returns incorrect value and doesn't
set the position of ByteBuffer[] in some cases.
> ---------------------------------------------------------------------------------------------------------------------------------------
>
>                 Key: HARMONY-849
>                 URL: http://issues.apache.org/jira/browse/HARMONY-849
>             Project: Harmony
>          Issue Type: Bug
>          Components: Classlib
>            Reporter: Andrew Zhang
>         Assigned To: George Harley
>         Attachments: luni.native.diff, nio.diff
>
>
> FileChannel.read(ByteBuffer[] dsts) returns incorrect value and doesn't set the position
of ByteBuffer[] in some cases.
> Following test reproduces the bug:
>     public void test_read$LByteBuffer() throws Exception {
>         final int CAPACITY = 64;
>         final String content = "TEST CONTENT";
>         final long contentLength = content.length();
>         
>         File file = File.createTempFile("File_of_readOnlyFileChannel", "tmp");
>         FileOutputStream fos = new FileOutputStream(file);
>         try {
>             fos.write(content.getBytes());
>         } finally {
>             fos.close();
>         }
>         ByteBuffer[] readBuffers = new ByteBuffer[2];
>         readBuffers[0] = ByteBuffer.allocate(CAPACITY);
>         readBuffers[1] = ByteBuffer.allocate(CAPACITY);
>         FileChannel filechannel = new FileInputStream(file).getChannel();
>         long readCount = filechannel.read(readBuffers);
>         // Harmony fails on following two assertions
>         assertEquals(contentLength, readCount);
>         assertEquals(contentLength, readBuffers[0].position());
>     }
> The test passes against RI while fails against Harmony.
> I'll upload a patch to fix the problem soon. 
> Thanks!
> Best regards,
> Andrew

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