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From Dinesh Bajaj <dinesh.ba...@ymail.com>
Subject Re: Problem storing an image in a Blob field in Java DB.
Date Fri, 12 Feb 2010 15:44:40 GMT

Hi Bryan, Kristian and Arin,

Many thanks for your replies.

The first post to this thread was also my first post to this forum, and I understand it was
therefore moderated. It appears that due to a technical fault, it was not forwarded to the
list members.

Coming back to the issue, I have now figured out the root cause of the problem.  The problem
was arising as I was invoking the method ImageIO.read(fis) on the FileInputStream instance,
before sending the same stream instance to the SetBinaryStream method.

I understand that reading the inputstream was causing the pointer to move to the end of the
stream, and therefore no data was getting stored in the Derby database. I amended the code,
and the problem is now fixed. What a great relieve as this problem was bugging me for the
last 3-4 days, and I can't believe that I couldn't figure it out earlier.

Anyways, many thanks for all your input.

Regards,
Dinesh


--- On Fri, 12/2/10, Bryan Pendleton <bpendleton@amberpoint.com> wrote:

From: Bryan Pendleton <bpendleton@amberpoint.com>
Subject: Re: Problem storing an image in a Blob field in Java DB.
To: "Derby Discussion" <derby-user@db.apache.org>
Date: Friday, 12 February, 2010, 8:57 PM

Dinesh Bajaj wrote:
>     preparedStatement.setBinaryStream(5, inputStream, file.length());

>     Message = Java exception: 'Input stream did not have exact amount of
>     data as the requested length.:

Can you show more of your actual code? It sounds like 'inputStream'
is not returning the data which is in 'file'.

Paste in a larger segment of your code, showing all the activity to
'inputStream' and 'file' since they were declared as variables.

thanks,

bryan




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