How do I write an OutputStream to a String?

I'm using an ObjectOutputStream to serialize a LinkedList. I tried using a ByteArrayOutputStream and invoking the toString() method thereof, but it changes the first two entries in the array and throws off the readObject() method of the ObjectInputStream I'm reading it into. What can I do?

I'm not 100% sure if this idea will work but you are welcome to try if you are using an Oracle database. There may be better ways to do this, and I believe my answer is depnedent upon having oracle.
Are you familiar with the LONG RAW datatype in oracle?
Serialize the object(s) to a file so you have a source for an input stream.
Create a table with a LONG RAW field.
Create the row and retrieve the id with a null field for the LONG RAW.
Create a prepared statment with the long raw field as a parameter.
Read your file into an input stream into the parameters of the prepared statement as a binary stream (setBinaryStream).
Update the table for the given id.
Verfiy your result ( I would reccomend that you use some sort of db tool to just extract the data and do a file comparison between the file you used to insert, and what is retrieved).
Writing a file to a LONG RAW field (normally you would use BLOB but I have never had much luck with it) is one way that If you wanted to save a file (of any type) to a database that you could do it.
This process could get a bit tricky, but I will say I have written 4 meg pdf files to a database using it. You may want to do a search on the word blob (although as I said when I attempted to write to a blob in oracle I had problems, I used long raw instead which has a smaller limit to it's size) in the jdbc discussion group for writing a file to a database.
Hope this might be some help to you.
Good luck,
Dan Hughes
Question one: Why?
Question two: Then how can I store it in a database?
Is it even possible?

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For downloading binary content that is not text/html, the Oracle WebLogic Portal content management tools use javascript in an onclick event handler to set the window URL to the URL of a download pageflow controller: window.location = url. The content management tools are in a portal so it should be possible for you to do the same thing.
The url is a custom pageflow controller that streams the bytes to the response. It sounds like you already have a pageflow you could recycle to use in that way. You don't want to stay within your portlet pageflow because then you will be streaming bytes into the middle of a portal response. You want a separate download pageflow that you invoke directly, outside of the portal framework (in other words, don't invoke it by rendering a portlet that invokes the pageflow).
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It turns out that I get an unchecked warning when I
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I'm doing; please trust me." But the compiler still
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SELECT aaufnr aobjnr aauart atxjcd a~pspel
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Ammi.

Hi,
SELECT objnr objid aufnr
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I want to write 1 digital port from PXI-6536 with streaming to TDMS file.
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Attachments:
1.JPG ‏27 KB

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Message Edited by AndrewMc on 01-27-2010 11:21 AM
Thanks,
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digitalconvert.vi ‏13 KB

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