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EE4J Compatible Implementation for Jakarta Faces API

There is a newer version: 4.1.1

/*
 * 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 com.sun.faces.application.annotation;

import java.lang.annotation.Annotation;

/**
 * Instances of this interface are responsible for scanning a Class
 * for a specific annotation types.
 *
 * Scanner implementations must be thread safe.
 */
interface Scanner {

    /**
     * @return the {@link java.lang.annotation.Annotation} this Scanner
     *  is responsible for handling.  NOTE: while a particular Scanner
     *  instance may handle a plural version of an Annotation in
     *  additional to a singular, this method must return the singular version
     *  only.
     */
    public Class getAnnotation();

    
    /**
     * Scan the target class for the {@link java.lang.annotation.Annotation}s this scanner handles.
     * @param clazz the target class
     * @return a new {@link RuntimeAnnotationHandler} instance capable of processing the
     *  annotations defined on this class.  If no relevant {@link java.lang.annotation.Annotation}s
     *  are found, return null.
     */
    public RuntimeAnnotationHandler scan(Class clazz);
    
}