javax.faces.context.ExceptionHandlerFactory Maven / Gradle / Ivy

Go to download
Show more of this group Show more artifacts with this name
Show all versions of jsf-api Show documentation
This is the master POM file for Sun's Implementation of the JSF 2.1 Specification.
There is a newer version: 2.2.20
/*
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
 *
 * 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:
 * Oracle designates this particular file as subject to the "Classpath"
 * 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:
 * "Portions Copyright [year] [name of copyright owner]"
 *
 * Contributor(s):
 * If you wish your version of this file to be governed by only the CDDL or
 * only the GPL Version 2, indicate your decision by adding "[Contributor]
 * elects to include this software in this distribution under the [CDDL or GPL
 * Version 2] license."  If you don't indicate a single choice of license, a
 * recipient has the option to distribute your version of this file under
 * either the CDDL, the GPL Version 2 or to extend the choice of license to
 * its licensees as provided above.  However, if you add GPL Version 2 code
 * and therefore, elected the GPL Version 2 license, then the option applies
 * only if the new code is made subject to such option by the copyright
 * holder.
 */

package javax.faces.context;

import javax.faces.FacesWrapper;

/**
 * ExceptionHandlerFactory
 * is a factory object that creates (if needed) and returns a new {@link
 * ExceptionHandler} instance.
 *
 * 

 * There must be one ExceptionHandlerFactory instance per web
 * application that is utilizing JavaServer Faces.  This instance can be
 * acquired, in a portable manner, by calling:
 *
 * 
 *   ExceptionHandlerFactory factory = (ExceptionHandlerFactory)
 *    FactoryFinder.getFactory(FactoryFinder.EXCEPTION_HANDLER_FACTORY);
 * 
 *

 * 
 *
 * @since 2.0
 */

public abstract class ExceptionHandlerFactory implements FacesWrapper {


    /**
     * If this factory has been decorated, the 
     * implementation doing the decorating may override this method to provide
     * access to the implementation being wrapped.  A default implementation
     * is provided that returns null.
     */
    public ExceptionHandlerFactory getWrapped() {
        return null;
    }

    
    /**
     * Create and return a A new
     * ExceptionHandler instance.  The implementation must return
     * an ExceptionHandler instance suitable for the environment.
     * For example, in some cases it may be desirable for an 
     * ExceptionHandler to write error information
     * to the response instead of throwing exceptions as in the case of
     * Ajax applications. 
     */
    public abstract ExceptionHandler getExceptionHandler();
    
}