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Jakarta Faces defines an MVC framework for building user interfaces for web applications, including UI components, state management, event handing, input validation, page navigation, and support for internationalization and accessibility.

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/*
 * Copyright (c) 1997, 2018 Oracle and/or its affiliates. All rights reserved.
 *
 * This program and the accompanying materials are made available under the
 * terms of the Eclipse Public License v. 2.0, which is available at
 * http://www.eclipse.org/legal/epl-2.0.
 *
 * This Source Code may also be made available under the following Secondary
 * Licenses when the conditions for such availability set forth in the
 * Eclipse Public License v. 2.0 are satisfied: GNU General Public License,
 * version 2 with the GNU Classpath Exception, which is available at
 * https://www.gnu.org/software/classpath/license.html.
 *
 * SPDX-License-Identifier: EPL-2.0 OR GPL-2.0 WITH Classpath-exception-2.0
 */

package javax.faces.flow.builder;

import javax.el.ValueExpression;

/**
 * Create a switch node in the current {@link javax.faces.flow.Flow}.
 * @since 2.2
 */

public abstract class SwitchBuilder implements NodeBuilder {
    
    /**
     * Create a switch case in the current switch.
     * @since 2.2
     *
     * @return the builder instance
     */
    
    public abstract SwitchCaseBuilder switchCase();
    
    /**
     * Set the default outcome of the current switch.
     * 
     * @param outcome A {@code ValueExpression} {@code String} that will be the 
     * default outcome of the switch.
     * @since 2.2
     * @throws NullPointerException if any of the parameters are {@code null}
     * 
     * @return the builder instance
     */
    
    public abstract SwitchCaseBuilder defaultOutcome(String outcome);
    
    /**
     * Set the default outcome of the current switch.
     * 
     * @param outcome A {@code ValueExpression} that will be the default outcome of the switch.
     * @throws NullPointerException if any of the parameters are {@code null}
     * 
     * @since 2.2
     *
     * @return the builder instance
     */
    
    public abstract SwitchCaseBuilder defaultOutcome(ValueExpression outcome);

    @Override
    public abstract SwitchBuilder markAsStartNode();

}