org.mycore.frontend.fileupload
Class MCRUploadCommunicator

java.lang.Object
  org.mycore.frontend.fileupload.MCRUploadCommunicator

public class MCRUploadCommunicator
extends Object

This class is used by applets to communicate with the corresponding MCRUploadServlet servlet to execute tasks on the server. For example, the applet may invoke the createDocument method and pass it a document instance to create this document in the persistent datastore on the server side. The MCRUploadCommunicator does some marshalling etc. and sends the request to the MCRUploadServlet servlet that does the job.

Version:

$Revision: 13085 $ $Date: 2008-02-06 18:27:24 +0100 (Mi, 06 Feb 2008) $

Author:

Frank Lützenkirchen, Harald Richter, Jens Kupferschmidt, Thomas Scheffler (yagee)

See Also:

MCRUploadServlet

Field Summary

protected MCRUploadApplet	applet
protected static int	bufferSize
protected String	uid
protected MCRUploadProgressMonitor	upm
protected String	url

Constructor Summary

MCRUploadCommunicator(String url, String uploadId, MCRUploadApplet applet)

Method Summary

protected String	buildMD5String(File file) Calculates the MD5 checksum of the given local file *
protected void	cancelUploadSession()
protected long	countTotalBytes(Vector files)
protected InputStream	doPost(Hashtable parameters)
protected String	encodeParameters(Hashtable parameters)
protected void	endUploadSession()
protected Hashtable	getResponse(InputStream is)
protected Vector[]	listFiles(File[] selectedFiles) Creates a list of all files in the given directories
void	loadFiles(Vector[] list)
protected Object	send(Hashtable parameters)
protected void	startUploadSession(int numFiles)
void	uploadFile(String path, File file)
void	uploadFiles(File[] selectedFiles)

Methods inherited from class java.lang.Object

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

Field Detail

url

protected String url

uid

protected String uid

upm

protected MCRUploadProgressMonitor upm

applet

protected MCRUploadApplet applet

bufferSize

protected static final int bufferSize

See Also:

Constant Field Values

Constructor Detail

MCRUploadCommunicator

public MCRUploadCommunicator(String url,
                             String uploadId,
                             MCRUploadApplet applet)

Method Detail

uploadFiles

public void uploadFiles(File[] selectedFiles)

countTotalBytes

protected long countTotalBytes(Vector files)

loadFiles

public void loadFiles(Vector[] list)
               throws Exception

Throws:

Exception

uploadFile

public void uploadFile(String path,
                       File file)
                throws Exception

Throws:

Exception

listFiles

protected Vector[] listFiles(File[] selectedFiles)
                      throws Exception

Creates a list of all files in the given directories

Parameters:

selectedFiles - list of selected files or directories from filechooser

Throws:

Exception

startUploadSession

protected void startUploadSession(int numFiles)
                           throws IOException,
                                  MCRUploadException

Throws:

IOException

MCRUploadException

endUploadSession

protected void endUploadSession()
                         throws IOException,
                                MCRUploadException

Throws:

IOException

MCRUploadException

cancelUploadSession

protected void cancelUploadSession()
                            throws IOException,
                                   MCRUploadException

Throws:

IOException

MCRUploadException

send

protected Object send(Hashtable parameters)
               throws IOException,
                      MCRUploadException

Throws:

IOException

MCRUploadException

doPost

protected InputStream doPost(Hashtable parameters)
                      throws IOException

Throws:

IOException

encodeParameters

protected String encodeParameters(Hashtable parameters)

getResponse

protected Hashtable getResponse(InputStream is)
                         throws IOException,
                                MCRUploadException

Throws:

IOException

MCRUploadException

buildMD5String

protected String buildMD5String(File file)
                         throws Exception

Calculates the MD5 checksum of the given local file *

Throws:

Exception