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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;

import java.util.List;
import javax.faces.context.FacesContext;

/**
 * Represents a switch node in the flow graph.
 * When control passes to a switch node, for each of the {@link SwitchCase}s
 * returned from {@link #getCases}, call {@link SwitchCase#getCondition}.  If
 * the return is {@code true}, let the return from {@link SwitchCase#getFromOutcome}
 * be used to determine where to go next in the flow graph and terminate the traversal.
 * If none of the cases returned {@code true} let {@link #getDefaultOutcome}
 * be used to determine where to go next in the flow graph.
 * 
 * @since 2.2
 */
public abstract class SwitchNode extends FlowNode {
    
    
    /**
     * Return the cases in this switch.
     * 
     * @since 2.2
     * 
     * @return the cases in this switch
     */
    public abstract List getCases();

    /**
     * Return the default outcome in this switch.
     * 
     * @since 2.2
     * 
     * @param context the {@link FacesContext} for this request
     * 
     * @return the default outcome in this switch
     */
    public abstract String getDefaultOutcome(FacesContext context);
    
}