001// Copyright 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.ioc;
016
017/**
018 * Introduced for Tapestry 5.3, contains new methods to provide access to annotations on the class,
019 * and on methods of the class. In rare cases, the same annotation type will appear on the service interface
020 * and on the class (or method implementation in the class); the implementation annotation always
021 * has precedence over the interface annotation.
022 * 
023 * @since 5.3
024 */
025public interface AnnotationAccess
026{
027    /**
028     * Returns a provider for annotations on the service class and interface. This will reflect annotations defined by
029     * the implementation class itself, plus annotations defined by the service interface (implementation class
030     * annotations take precedence).
031     * @return an AnnotationProvider instance.
032     */
033    AnnotationProvider getClassAnnotationProvider();
034
035    /**
036     * Returns a provider for annotations of a method of the class. This includes annotations on
037     * the implementation method, plus annotations on the corresponding service interface method
038     * (if such a method exists), with precedence on the implementation class method annotations.
039     * @param methodName the name of the method.
040     * @param parameterTypes the types of the parameters of the method.
041     * @return an AnnotationProvider instance.     * 
042     */
043    AnnotationProvider getMethodAnnotationProvider(String methodName, Class... parameterTypes);
044
045}