Blob.getBinaryStream(long,long) is off by one for the pos+len check
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Key: DERBY-4060
URL: https://issues.apache.org/jira/browse/DERBY-4060
Project: Derby
Issue Type: Bug
Components: JDBC
Affects Versions: 10.4.2.0
Reporter: Trejkaz
If you have a BLOB of length 20, and call blob.getBinaryStream(11,10), it will
give you an error:
java.sql.SQLException: Sum of position('11') and length('10') is greater
than the size of the LOB.
This is following word for word an error in the JDBC Javadoc:
SQLException - if pos is less than 1 or if pos is greater than the
number of bytes in the Blob or if pos + length is greater than the number of
bytes in the Blob
So it's checking 11 + 10 > 20, but it should check 11 + 10 > 21 (pos + len >
blob.length() + 1) to allow reading the last byte.
The Javadoc for Clob.getCharacterStream(long,long) has similar wording so it
may have the same issue.
Likewise, the client driver may have the same issue -- I haven't yet checked.
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