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From "Yun Lee (JIRA)" <j...@apache.org>
Subject [jira] Updated: (DERBY-3898) Blob.setBytes differs between embedded and client driver when the specified length is invalid
Date Sun, 08 Aug 2010 13:41:16 GMT

     [ https://issues.apache.org/jira/browse/DERBY-3898?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Yun Lee updated DERBY-3898:
---------------------------

    Attachment: derby-3898-1.stat
                derby-3898-1.patch

In the new patch, BlobSetBytesBoundaryTest.java has been added to run Boundary tests for Blob.setBytes().


Overall boundary check has been done in Blob.setBytes() and EmbedBlob.setBytes().Now they
can perform accordingly, not only for too big length, but also for offset and pos.

I have run relative tests, they were all OK. Please check it, thanks!

> Blob.setBytes differs between embedded and client driver when the specified length is
invalid
> ---------------------------------------------------------------------------------------------
>
>                 Key: DERBY-3898
>                 URL: https://issues.apache.org/jira/browse/DERBY-3898
>             Project: Derby
>          Issue Type: Bug
>          Components: JDBC
>    Affects Versions: 10.3.3.0, 10.4.2.0, 10.5.1.1, 10.6.1.0
>            Reporter: Kristian Waagan
>            Assignee: Yun Lee
>            Priority: Minor
>         Attachments: derby-3898-1.patch, derby-3898-1.stat, derby-3898-testcase.patch,
derby-3898-testcase.stat, Derby3898.java
>
>
> Blob.setBytes behaves differently with the embedded driver and the client driver.
> Assume a 1 byte array and a specified length of 2: Blob.setBytes(1, new byte[] {0x69},
0, 2)
> Embedded: IndexOutOfBoundsException (from java.io.RandomAccessFile.writeBytes or System.arraycopy)
> Client: succeeds, returns insertion count 1
> The behavior should be made consistent, but what is the correct behavior?
> From the Blob.setBytes JavaDoc:
> "Writes all or part of the given byte array to the BLOB value that this Blob object represents
and returns the number of bytes written. Writing starts at position pos in the BLOB  value;
len bytes from the given byte array are written. The array of bytes will overwrite the existing
bytes in the Blob object starting at the position pos. If the end of the Blob value is reached
while writing the array of bytes, then the length of the Blob value will be increased to accomodate
the extra bytes."

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