WcsExceptionHandler.java

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package com.wcs.newsletter.util;

/*
 * #%L
 * Webstar Newsletter
 * %%
 * Copyright (C) 2013 Webstar Csoport Kft.
 * %%
 * This program 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 3 of the 
 * License, or (at your option) any later version.
 * 
 * This program 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 this program.  If not, see
 * <http://www.gnu.org/licenses/gpl-3.0.html>.
 * #L%
 */

/**
 *
 * @author csaba
 */


import java.util.Iterator;
import javax.faces.FacesException;
import javax.faces.application.NavigationHandler;
import javax.faces.application.ViewExpiredException;
import javax.faces.context.ExceptionHandler;
import javax.faces.context.ExceptionHandlerWrapper;
import javax.faces.context.FacesContext;
import javax.faces.event.AbortProcessingException;
import javax.faces.event.ExceptionQueuedEvent;
import javax.faces.event.ExceptionQueuedEventContext;

public class WcsExceptionHandler extends ExceptionHandlerWrapper {

    private ExceptionHandler wrapped;

    public WcsExceptionHandler(ExceptionHandler wrapped) {
        this.wrapped = wrapped;
    }

    @Override
    public ExceptionHandler getWrapped() {
        return this.wrapped;
    }

    @Override
    public void handle() throws FacesException {
        Iterable<ExceptionQueuedEvent> events = this.wrapped.getUnhandledExceptionQueuedEvents();
        for(Iterator<ExceptionQueuedEvent> it = events.iterator(); it.hasNext();) {
            ExceptionQueuedEvent event = it.next();
            ExceptionQueuedEventContext eqec = event.getContext();
            System.out.println("eqec.getException()"+eqec.getException());
            if(eqec.getException() instanceof ViewExpiredException || eqec.getException() instanceof AbortProcessingException) {
                FacesContext context = eqec.getContext();
                NavigationHandler navHandler = context.getApplication().getNavigationHandler();
 
                try {
                    navHandler.handleNavigation(context, null, "main.xhtml?faces-redirect=true&expired=true");
                }
                catch(Exception e){
                    System.out.println("exp"+e);
                }
                finally {
                    it.remove();
                }
            }
        }

        this.wrapped.handle();;
    }
}