org.mycore.frontend.fileupload
Class MCRSWFUploadHandlerMyCoRe

java.lang.Object
  org.mycore.frontend.fileupload.MCRUploadHandler
      org.mycore.frontend.fileupload.MCRSWFUploadHandlerMyCoRe

public class MCRSWFUploadHandlerMyCoRe
extends MCRUploadHandler

This class stores files uploaded from the client applet as derivates into the workflow.

Version:

$Revision: 15270 $ $Date: 2009-05-25 17:27:57 +0200 (Mon, 25 May 2009) $

Author:

Harald Richter, Jens Kupferschmidt, Frank Lützenkirchen

See Also:

MCRUploadHandler

Field Summary

Fields inherited from class org.mycore.frontend.fileupload.MCRUploadHandler

logger, uploadID, url

Constructor Summary

MCRSWFUploadHandlerMyCoRe(String docId, String derId, String mode, String url)
Creates MCRUploadHandler for MyCoRe

Method Summary

void	finishUpload() Finish upload, store derivate
long	receiveFile(String path, InputStream in, long length, String md5) When the applet uploads a file, this method is called so that the UploadHandler subclass can store the file on the server side.
void	startUpload(int numFiles) Start Upload for MyCoRe

Methods inherited from class org.mycore.frontend.fileupload.MCRUploadHandler

acceptFile, cancelUpload, getID, getRedirectURL, unregister

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

MCRSWFUploadHandlerMyCoRe

public MCRSWFUploadHandlerMyCoRe(String docId,
                                 String derId,
                                 String mode,
                                 String url)

Creates MCRUploadHandler for MyCoRe

Parameters:

docId - document to which derivate belongs

derId - derivate used to add files, if id="0" a new derivate is created

mode - "append" add files to derivate, replace old files "replace" add files to derivate, delete old files "create" add files to new derivate

url - when MCRUploadApplet is finished this url will be shown

Method Detail

startUpload

public void startUpload(int numFiles)
                 throws Exception

Start Upload for MyCoRe

Specified by:

startUpload in class MCRUploadHandler

Parameters:

numFiles - the number of files that the applet will upload

Throws:

Exception

receiveFile

public long receiveFile(String path,
                        InputStream in,
                        long length,
                        String md5)
                 throws Exception

Description copied from class: MCRUploadHandler

When the applet uploads a file, this method is called so that the UploadHandler subclass can store the file on the server side. When the UploadHandler could read less than length bytes from the InputStream at the time the InputStream has no data any more, the user at the remote side canceled upload during file transfer. The UploadHandler then can decide to delete the file, but must return the number of bytes stored. The UploadHandler can also compare the MD5 checksum calculated at the client side with its own checksum, to detect magical transfer errors. This method is not covered by a database transaction. The implementation has to handle transactions by itself.

Specified by:

receiveFile in class MCRUploadHandler

Parameters:

path - the path and filename of the file

in - the inputstream to read the content of the file from

length - the total file size as number of bytes. This may be 0, meaning that the file is empty or the file size is not known.

md5 - the md5 checksum calculated at the client applet side. This may be null, meaning that the md5 checksum is not known.

Returns:

the number of bytes that have been stored.

Throws:

Exception

finishUpload

public void finishUpload()
                  throws Exception

Finish upload, store derivate

Specified by:

finishUpload in class MCRUploadHandler

Throws:

Exception