/*
This file is part of Cyclos (www.cyclos.org).
A project of the Social Trade Organisation (www.socialtrade.org).
Cyclos is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
Cyclos is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with Cyclos; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
package nl.strohalm.cyclos.http;
import java.util.Enumeration;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletRequestWrapper;
import javax.servlet.http.HttpSession;
/**
* An {@link HttpServletRequest} which wraps another request, keeping track of changes. Any changes can be applied or reset.
* @author luis
*/
public class ResettableHttpServletRequest extends HttpServletRequestWrapper implements AttributeHolder, Resettable {
private ResettableAttributeHolder attributes;
private ResettableHttpSession session;
public ResettableHttpServletRequest(final HttpServletRequest request) {
super(request);
attributes = new ResettableAttributeHolder(AttributeHolder.Factory.request(request));
}
@Override
public void applyState() {
attributes.applyState();
if (session != null) {
session.applyState();
}
}
@Override
public Object getAttribute(final String name) {
return attributes.getAttribute(name);
}
@Override
public Enumeration<String> getAttributeNames() {
return attributes.getAttributeNames();
}
@Override
public HttpSession getSession() {
if (session != null) {
return session;
}
final HttpSession original = super.getSession();
session = new ResettableHttpSession(this, original);
return session;
}
@Override
public HttpSession getSession(final boolean create) {
if (session != null) {
return session;
}
final HttpSession original = super.getSession(create);
if (original != null) {
session = new ResettableHttpSession(this, original);
}
return session;
}
public void invalidateSession() {
session = null;
}
@Override
public void removeAttribute(final String name) {
attributes.removeAttribute(name);
}
@Override
public void resetState() {
attributes.resetState();
if (session != null) {
session.resetState();
}
}
@Override
public void setAttribute(final String name, final Object value) {
attributes.setAttribute(name, value);
}
}