    001// Copyright 2007, 2011 The Apache Software Foundation
    002//
    003// Licensed under the Apache License, Version 2.0 (the "License");
    004// you may not use this file except in compliance with the License.
    005// You may obtain a copy of the License at
    006//
    007//     http://www.apache.org/licenses/LICENSE-2.0
    008//
    009// Unless required by applicable law or agreed to in writing, software
    010// distributed under the License is distributed on an "AS IS" BASIS,
    011// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    012// See the License for the specific language governing permissions and
    013// limitations under the License.
    014
    015package org.apache.tapestry5.commons;
    016
    017import java.lang.annotation.Annotation;
    018
    019/**
    020 * A source of annotations. This interface is used to mask where the annotations come from (for example, from a Method,
    021 * a Class, or some other source).
    022 */
    023public interface AnnotationProvider
    024{
    025    /**
    026     * Searches for the specified annotation, returning the matching annotation instance.
    027     *
    028     * @param <T>
    029     * @param annotationClass used to select the annotation to return
    030     * @return the annotation, or null if not found
    031     */
    032    <T extends Annotation> T getAnnotation(Class<T> annotationClass);
    033}