I was having the same problem - the answer so far was that the
datahandler stream is at some time read into some memory structure;
and therefore streaming is not entirely possible.
If there is any solution someone comes up with for that I would be
very interested, too!
regards
Martin
On Wed, 15 Dec 2004 11:15:29 -0000, Ian Jones <ijones_at_piper-group.com> wrote:
>
>
>
> Hi all,
>
>
>
> I'm using a DataHandler to download a file from our server to a local PC.
> This is working fine until the files get relatively large, e.g. I'm
> currently attempting to transfer a zipped up file that is about 30Mb, and
> then I the client reports an OutOfMemory error.
>
>
>
> Here's a code snippet of the point in the code where the error is occurring:
>
>
>
> logger.info("Requesting file");
>
>
>
> // ask for the file here
>
> DataHandler dh = client.getFile(filePath);
>
>
>
> logger.info("Got data handler");
>
>
>
> I get the first log message – "Requesting file" – and then the error. So it
> is the retrieval of the DataHandler from the server, by calling
> client.getFile() above, that is causing the error. The getFile() method on
> the server simply does this:
>
>
>
> public DataHandler getFile(String filename) throws RemoteException {
>
> return new DataHandler(new FileDataSource(new File(filename)));
>
> }
>
>
>
> I've increased the heap size of the java process running the client and this
> stops the problem occurring. Is this the only way to stop this happening?
> Or could I be doing something incorrectly to cause this problem? I need to
> be able to deal with transferring files up to about 500Mb.
>
>
>
> Any help will be greatly appreciated.
>
>
>
> Ian Jones
>
> Senior Analyst Developer
>
> Piper Group plc
>
> Email: ijones_at_piper-group.com
>
> Tel: + 44 (0) 1454 284900
>
> Fax: + 44 (0) 1454 284950
>
> www.piper-group.com
>
>
>
> Information contained in this e-mail is intended for the use of the
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> prohibited. The views expressed in this communication may not necessarily be
> the views held by Piper Group plc.
>
>
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