Example usage for com.vaadin.server WrappedSession removeAttribute

Introduction

In this page you can find the example usage for com.vaadin.server WrappedSession removeAttribute.

Prototype

public void removeAttribute(String name);

Source Link

Document

Removes the object bound with the specified name from this session.

Usage

From source file:com.haulmont.cuba.web.sys.LinkHandler.java

License:Apache License

/**
 * Called to handle the link./* w w w  . j  a v a2  s  .c  o m*/
 */
public void handle() {
    try {
        String folderId = requestParams.get("folder");
        if (!StringUtils.isEmpty(folderId)) {
            AbstractSearchFolder folder = loadFolder(UUID.fromString(folderId));
            if (folder != null) {
                folders.openFolder(folder);
            } else {
                log.warn("Folder not found: {}", folderId);
            }
            return;
        }

        String screenName = requestParams.get("screen");
        if (screenName == null) {
            log.warn("ScreenId not found in request parameters");
            return;
        }

        WindowConfig windowConfig = AppBeans.get(WindowConfig.NAME);
        final WindowInfo windowInfo = windowConfig.getWindowInfo(screenName);
        if (windowInfo == null) {
            log.warn("WindowInfo not found for screen: {}", screenName);
            return;
        }

        UUID userId = getUUID(requestParams.get("user"));
        UserSession userSession = app.getConnection().getSession();
        if (userSession == null) {
            log.warn("No user session");
            return;
        }

        if (!(userId == null || userSession.getCurrentOrSubstitutedUser().getId().equals(userId))) {
            substituteUserAndOpenWindow(windowInfo, userId);
        } else {
            openWindow(windowInfo, requestParams);
        }
    } catch (AccessDeniedException e) {
        accessDeniedHandler.handle(e, app.getWindowManager());
    } catch (NoSuchScreenException e) {
        noSuchScreenHandler.handle(e, app.getWindowManager());
    } catch (EntityAccessException e) {
        entityAccessExceptionHandler.handle(e, app.getWindowManager());
    } finally {
        VaadinRequest request = VaadinService.getCurrentRequest();
        WrappedSession wrappedSession = request.getWrappedSession();
        wrappedSession.removeAttribute(AppUI.LAST_REQUEST_PARAMS_ATTR);
        wrappedSession.removeAttribute(AppUI.LAST_REQUEST_ACTION_ATTR);
    }
}

---

From source file:org.opencms.ui.error.CmsErrorUI.java

License:Open Source License

/**
 * Reads the error attributes from current session.<p>
 *//*from w  w w.  j a  va2s . com*/
private void readErrorAttributes() {

    WrappedSession session = getSession().getSession();
    m_requestedPage = (String) session.getAttribute(PATH);
    m_throwable = (Throwable) session.getAttribute(THROWABLE);

    // remove the attributes after read to keep the session clean
    session.removeAttribute(THROWABLE);
    session.removeAttribute(PATH);
}

---

From source file:org.vaadin.spring.security.managed.DefaultVaadinManagedSecurity.java

License:Apache License

/**
 * Clears the session of all attributes except some internal Vaadin attributes and reinitializes it. If Websocket
 * Push is used, the session will never be reinitialized since this throws errors on at least
 * Tomcat 8./* w  ww.j  a va  2 s .c o  m*/
 */
protected void clearAndReinitializeSession() {
    final VaadinRequest currentRequest = VaadinService.getCurrentRequest();
    final UI currentUI = UI.getCurrent();
    if (currentUI != null) {
        final Transport transport = currentUI.getPushConfiguration().getTransport();
        if (Transport.WEBSOCKET.equals(transport) || Transport.WEBSOCKET_XHR.equals(transport)) {
            LOGGER.warn(
                    "Clearing and reinitializing the session is currently not supported when using Websocket Push.");
            return;
        }
    }
    if (currentRequest != null) {
        LOGGER.debug("Clearing the session");
        final WrappedSession session = currentRequest.getWrappedSession();
        final String serviceName = VaadinService.getCurrent().getServiceName();
        final Set<String> attributesToSpare = new HashSet<String>();
        attributesToSpare.add(serviceName + ".lock");
        attributesToSpare.add(VaadinSession.class.getName() + "." + serviceName);
        for (String s : currentRequest.getWrappedSession().getAttributeNames()) {
            if (!attributesToSpare.contains(s)) {
                LOGGER.trace("Removing attribute {} from session", s);
                session.removeAttribute(s);
            }
        }
        LOGGER.debug("Reinitializing the session {}", session.getId());
        VaadinService.reinitializeSession(currentRequest);
        LOGGER.debug("Session reinitialized, new ID is {}",
                VaadinService.getCurrentRequest().getWrappedSession().getId());
    } else {
        LOGGER.warn(
                "No VaadinRequest bound to current thread, could NOT clear/reinitialize the session after login");
    }
}

---