On 20 March 2014 13:15, murali krishnan <[email protected]> wrote:
> Hi Team,
Is this about VFS? or about NET?
In any case, this is off-topic for the developer list.
Please subscribe to the user list and re-post there.
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>
>
> I have a question regarding the commons-net-3.3.jar. The below code snippet
> is from FTPClient.java (available in commons-net-3.3-sources.jar). I am
> calling the method retrieveFile to download a file from a FTP server. I
> just want to know whether this stores the entire file content in the memory
> or writes the file directly to the disk? Can you clarify my query please?
>
>
>
> public boolean retrieveFile(String remote, OutputStream local)
>
> throws IOException
>
> {
>
> return _retrieveFile(FTPCmd.RETR.getCommand(), remote, local);
>
> }
>
>
>
> /**
>
> * @since 3.1
>
> */
>
> protected boolean _retrieveFile(String command, String remote,
> OutputStream local)
>
> throws IOException
>
> {
>
> Socket socket = _openDataConnection_(command, remote);
>
>
>
> if (socket == null) {
>
> return false;
>
> }
>
>
>
> InputStream input = getBufferedInputStream(socket.getInputStream());
>
> if (__fileType == ASCII_FILE_TYPE) {
>
> input = new FromNetASCIIInputStream(input);
>
> }
>
>
>
> CSL csl = null;
>
> if (__controlKeepAliveTimeout > 0) {
>
> csl = new CSL(this, __controlKeepAliveTimeout,
> __controlKeepAliveReplyTimeout);
>
> }
>
>
>
> // Treat everything else as binary for now
>
> try
>
> {
>
> Util.copyStream(input, local, getBufferSize(),
>
> CopyStreamEvent.UNKNOWN_STREAM_SIZE,
> __mergeListeners(csl),
>
> false);
>
> } finally {
>
> Util.closeQuietly(input);
>
> Util.closeQuietly(socket);
>
> if (csl != null) {
>
> csl.cleanUp(); // fetch any outstanding keepalive replies
>
> }
>
> }
>
>
>
> // Get the transfer response
>
> boolean ok = completePendingCommand();
>
> return ok;
>
> }
>
>
>
> Regards
>
> Murali
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