org.mycore.datamodel.ifs
Class MCRFileNodeServlet

java.lang.Object
  javax.servlet.GenericServlet
      javax.servlet.http.HttpServlet
          org.mycore.frontend.servlets.MCRServlet
              org.mycore.datamodel.ifs.MCRFileNodeServlet

All Implemented Interfaces:

Serializable, Servlet, ServletConfig

public class MCRFileNodeServlet
extends MCRServlet

This servlet delivers the contents of an MCRFilesystemNode to the client browser. If the node is a ordinary MCRFile, the contents of that file will be sent to the browser. If the node is an MCRFile with a MCRAudioVideoExtender, the message that starts the associated streaming player will be delivered. If the node is a MCRDirectory, the contents of that directory will be forwareded to MCRLayoutService as XML data to display a detailed directory listing.

Version:

$Revision: 15202 $ $Date: 2008-01-14 11:02:17 +0000 (Mo, 14 Jan 2008) $

Author:

Frank Lützenkirchen, Jens Kupferschmidt, Thomas Scheffler (yagee)

See Also:

Serialized Form

Field Summary

Fields inherited from class org.mycore.frontend.servlets.MCRServlet

BASE_URL_ATTRIBUTE, trustedProxies

Constructor Summary

MCRFileNodeServlet()

Method Summary

void	doGetPost(MCRServletJob job) Handles the HTTP request
protected void	errorPage(HttpServletRequest req, HttpServletResponse res, int error, String msg, Exception ex, boolean xmlstyle) Forwards the error to generate the output
protected long	getLastModified(HttpServletRequest request) allows browser to cache requests.
protected static String	getOwnerID(HttpServletRequest request)
protected void	layoutDirectory(HttpServletRequest req, HttpServletResponse res, Document jdom) Called to layout the directory structure

Methods inherited from class org.mycore.frontend.servlets.MCRServlet

buildRedirectURL, doGet, doGet, doPost, doPost, generateActiveLinkErrorpage, generateErrorPage, getBaseURL, getLayoutService, getProperty, getRemoteAddr, getServletBaseURL, getSession, handleException, init, initTrustedProxies, render, reportException, think

Methods inherited from class javax.servlet.http.HttpServlet

doDelete, doHead, doOptions, doPut, doTrace, 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

MCRFileNodeServlet

public MCRFileNodeServlet()

Method Detail

getLastModified

protected long getLastModified(HttpServletRequest request)

Description copied from class: MCRServlet

allows browser to cache requests. This method is usefull as it allows browsers to cache content that is not changed. Please overwrite this method in every Servlet that depends on "remote" data.

Overrides:

getLastModified in class MCRServlet

doGetPost

public void doGetPost(MCRServletJob job)
               throws IOException

Handles the HTTP request

Overrides:

doGetPost in class MCRServlet

Throws:

IOException

getOwnerID

protected static String getOwnerID(HttpServletRequest request)

layoutDirectory

protected void layoutDirectory(HttpServletRequest req,
                               HttpServletResponse res,
                               Document jdom)
                        throws IOException

Called to layout the directory structure

Parameters:

req - the html request

res - the html response

jdom - the jdom document

Throws:

IOException

See Also:

in JSPDocportal

errorPage

protected void errorPage(HttpServletRequest req,
                         HttpServletResponse res,
                         int error,
                         String msg,
                         Exception ex,
                         boolean xmlstyle)
                  throws IOException

Forwards the error to generate the output

Throws:

IOException

See Also:

overwritten in jspdocportal