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From "Trejkaz (JIRA)" <j...@apache.org>
Subject [jira] Created: (DERBY-4061) InputStream returned from Blob.getBinaryStream(long, long) terminates the stream by returning 0, should return -1
Date Mon, 16 Feb 2009 22:07:59 GMT
InputStream returned from Blob.getBinaryStream(long, long) terminates the stream by returning
0, should return -1
-----------------------------------------------------------------------------------------------------------------

                 Key: DERBY-4061
                 URL: https://issues.apache.org/jira/browse/DERBY-4061
             Project: Derby
          Issue Type: Bug
          Components: JDBC
    Affects Versions: 10.4.2.0
            Reporter: Trejkaz


Take the following code to copy a sub-stream from a BLOB:

Blob blob = rs.getBlob(1);
InputStream stream = blob.getBinaryStream(1000, 2000);
try {
  IOUtils.copy(stream, out);
} finally {
  stream.close();
}

This will loop forever in IOUtils.copy, as the InputStream is returning 0 at end of stream
instead of -1.  It probably should return -1 to comply with the Javadoc for InputStream.

Notes:
I have not yet checked Blob.getBinaryStream(), or any of the Clob methods, or the client driver.
 So some of these may have a similar issue.



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