Package org.kawanfw.sql.api.server.blob

Class DefaultBlobDownloadConfigurator

java.lang.Object

org.kawanfw.sql.api.server.blob.DefaultBlobDownloadConfigurator

All Implemented Interfaces:

BlobDownloadConfigurator

public class DefaultBlobDownloadConfigurator
extends Object
implements BlobDownloadConfigurator

Class that allows downloading Blob/Clobs. Default implementation.
It is not required nor recommended to extend this class or to develop another BlobDownloadConfigurator implementation.
Extend this class and override download(HttpServletRequest, File, OutputStream) only if you want to implement your own advanced download mechanism with special features: file chunking, recovery mechanisms, etc.

Author:

Nicolas de Pomereu

Constructor Summary

Constructors

Constructor	Description
DefaultBlobDownloadConfigurator()

Method Summary

Modifier and Type	Method	Description
void	download(javax.servlet.http.HttpServletRequest request, File file, OutputStream outputStream)	Simple copy of file to download on Servlet output stream.

Methods inherited from class java.lang.Object

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

Constructor Details

DefaultBlobDownloadConfigurator

public DefaultBlobDownloadConfigurator()

Method Details

download

public void download(javax.servlet.http.HttpServletRequest request,
File file,
OutputStream outputStream)
              throws IOException

Simple copy of file to download on Servlet output stream.

Specified by:

download in interface BlobDownloadConfigurator

Parameters:

request - the http servlet request. May be use to get supplemental parameters passed by client side.

file - the file to download corresponding to the blob id called by the client side

outputStream - the servlet output stream on which to download the file. Must *not* be closed at end of download, because it can be reused to send error message to client side after this method execution

Throws:

IOException - if any I/O exception occurs during the download