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  * JBoss, Home of Professional Open Source.
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 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * Lesser General Public License for more details.
 * You should have received a copy of the GNU Lesser General Public
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package org.picketbox.http.authentication;

This class maintains a cache of SavedRequest instances created from javax.servlet.http.HttpServletRequest instances. This class is to be used during authentication to help to retrieve previous informations from the request made for the first time before the authentication process begins. It also stores the cached request in the user session for later use, if necessary.

Pedro Silva
public class RequestCache {

Saves a javax.servlet.http.HttpServletRequest as a SavedRequest instance. All the state from the original request will be copied.

    public void saveRequest(HttpServletRequest request) {
        .put(getCurrentSession(request).getId(), new SavedRequest(request));


Returns the user session. If no session was created a exception is raised. A valid session must exist before invoking this method.

    private HttpSession getCurrentSession(HttpServletRequest request) {
        HttpSession session = request.getSession(true);
        if (session == null) {
            throw new IllegalStateException("Unable to cache the request. User session was not created.");
        return session;


Removes a cached request and stores it in the session.

        HttpSession session = getCurrentSession(request);
        SavedRequest savedRequest = this..remove(session.getId());
        return savedRequest;
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