org.directwebremoting.extend
Interface DownloadManager

All Known Implementing Classes:

DataUrlDownloadManager, FileStoreDownloadManager, InMemoryDownloadManager, PurgingDownloadManager

public interface DownloadManager

A DownloadManager allows you to inject files into the system and then retrieve them via a servlet at some later date. Implementations of DownloadManager are responsible for defining a purge policy.

Author:

Joe Walker [joe at getahead dot ltd dot uk]

Method Summary

java.lang.String	addFileTransfer(FileTransfer transfer) Inject a file into the system for later download.
FileTransfer	getFileTransfer(java.lang.String id) Retrieve a FileGenerator given the id that it was stored under

Method Detail

addFileTransfer

java.lang.String addFileTransfer(FileTransfer transfer)
                                 throws java.io.IOException

Inject a file into the system for later download.

Parameters:

transfer - The representation of the file to inject

Returns:

A URL for how to allow download of this data at a later time

Throws:

java.io.IOException - If there are problems reading from the FileTransfer

getFileTransfer

FileTransfer getFileTransfer(java.lang.String id)
                             throws java.io.IOException

Retrieve a FileGenerator given the id that it was stored under

Parameters:

id - The id to lookup

Returns:

The matching FileGenerator or null if no match was found

Throws:

java.io.IOException