Package it.unimi.di.big.mg4j.query

Class FileSystemItem

java.lang.Object

javax.servlet.GenericServlet

javax.servlet.http.HttpServlet

it.unimi.di.big.mg4j.query.FileSystemItem

All Implemented Interfaces:

Serializable, Servlet, ServletConfig

public class FileSystemItem
extends HttpServlet

An item serving a file from the file system.

This kind of QueryServlet item will load into the browser the file specified by the parameter uri. Its only purpose is to work around security problems that forbid in some browsers (e.g., Firefox) to link a file in the file system from a page retrieved from an HTTP server.

When this class is loaded, it creates the singleton HttpFileServer and caches it to avoid class garbage collection.

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor	Description
FileSystemItem()

Method Summary

Modifier and Type	Method	Description
protected void	doGet(HttpServletRequest request, HttpServletResponse response)
protected void	doPost(HttpServletRequest request, HttpServletResponse response)
void	init()

Methods inherited from class javax.servlet.http.HttpServlet

doDelete, doHead, doOptions, doPut, doTrace, getLastModified, service, service

Methods inherited from class javax.servlet.GenericServlet

destroy, getInitParameter, getInitParameterNames, getServletConfig, getServletContext, getServletInfo, getServletName, init, log, log

Methods inherited from class java.lang.Object

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

Constructor Detail

FileSystemItem

public FileSystemItem()

Method Detail

init

public void init()

Overrides:

init in class GenericServlet

doGet

protected void doGet(HttpServletRequest request,
                     HttpServletResponse response)
              throws IOException

Overrides:

doGet in class HttpServlet

Throws:

IOException

doPost

protected void doPost(HttpServletRequest request,
                      HttpServletResponse response)
               throws IOException

Overrides:

doPost in class HttpServlet

Throws:

IOException