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This is the master POM file for Oracle's Implementation of the JSF 2.2 Specification.
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/*
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 *
 * Copyright (c) 1997-2010 Oracle and/or its affiliates. All rights reserved.
 *
 * The contents of this file are subject to the terms of either the GNU
 * General Public License Version 2 only ("GPL") or the Common Development
 * and Distribution License("CDDL") (collectively, the "License").  You
 * may not use this file except in compliance with the License.  You can
 * obtain a copy of the License at
 * https://glassfish.dev.java.net/public/CDDL+GPL_1_1.html
 * or packager/legal/LICENSE.txt.  See the License for the specific
 * language governing permissions and limitations under the License.
 *
 * When distributing the software, include this License Header Notice in each
 * file and include the License file at packager/legal/LICENSE.txt.
 *
 * GPL Classpath Exception:
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 * exception as provided by Oracle in the GPL Version 2 section of the License
 * file that accompanied this code.
 *
 * Modifications:
 * If applicable, add the following below the License Header, with the fields
 * enclosed by brackets [] replaced by your own identifying information:
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package com.sun.faces.application;

import com.sun.faces.util.Util;
import java.util.HashSet;
import java.util.Map;
import java.util.Set;
import java.util.concurrent.ConcurrentHashMap;
import javax.faces.FacesException;
import javax.faces.event.PostAddToViewEvent;
import javax.faces.event.PostValidateEvent;
import javax.faces.event.PreValidateEvent;
import javax.faces.event.ComponentSystemEvent;
import javax.faces.event.PreRenderComponentEvent;
import javax.faces.event.PreRenderViewEvent;
import javax.faces.event.SystemEvent;

/**
 * Note: New, relevant spec'd ComponentSystemEvents must be added to the constructor
 */
public class NamedEventManager {

    private Map> namedEvents =
            new ConcurrentHashMap>();
    private Map>> duplicateNames =
             new ConcurrentHashMap>>();

    public NamedEventManager() {
        namedEvents.put("javax.faces.event.PreRenderComponent", PreRenderComponentEvent.class);
        namedEvents.put("javax.faces.event.PreRenderView", PreRenderViewEvent.class);
        namedEvents.put("javax.faces.event.PostAddToView", PostAddToViewEvent.class);
        namedEvents.put("javax.faces.event.PreValidate", PreValidateEvent.class);
        namedEvents.put("javax.faces.event.PostValidate", PostValidateEvent.class);
        namedEvents.put("preRenderComponent", PreRenderComponentEvent.class);
        namedEvents.put("preRenderView", PreRenderViewEvent.class);
        namedEvents.put("postAddToView", PostAddToViewEvent.class);
        namedEvents.put("preValidate", PreValidateEvent.class);
        namedEvents.put("postValidate", PostValidateEvent.class);
    }

    public void addNamedEvent(String name, Class event) {
        namedEvents.put(name, event);
    }

    public Class getNamedEvent(String name) {
        Class namedEvent = namedEvents.get(name);
        if (namedEvent == null) {
            try {
                namedEvent = Util.loadClass(name, this);
            } catch (ClassNotFoundException ex) {
                throw new FacesException ("An unknown event type was specified:  " + name, ex);
            }
        }
        if (!ComponentSystemEvent.class.isAssignableFrom(namedEvent)) {
                throw new ClassCastException();
        }

        return namedEvent;
    }

    public void addDuplicateName(String name, Class event) {
        Class registeredEvent = namedEvents.remove(name);
        Set> events = duplicateNames.get(name);
        if (events == null) {
            events = new HashSet>();
            duplicateNames.put(name, events);
        }
        events.add(event);
        if (registeredEvent != null) {
            events.add(registeredEvent);
        }
    }

    public boolean isDuplicateNamedEvent(String name) {
        return (namedEvents.get(name) != null) || (duplicateNames.get(name) != null);
    }
}