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
017import org.apache.tapestry5.commons.AnnotationProvider;
018
019/**
020 * Introduced for Tapestry 5.3, contains new methods to provide access to annotations on the class,
021 * and on methods of the class. In rare cases, the same annotation type will appear on the service interface
022 * and on the class (or method implementation in the class); the implementation annotation always
023 * has precedence over the interface annotation.
024 * 
025 * @since 5.3
026 */
027public interface AnnotationAccess
028{
029    /**
030     * Returns a provider for annotations on the service class and interface. This will reflect annotations defined by
031     * the implementation class itself, plus annotations defined by the service interface (implementation class
032     * annotations take precedence).
033     * @return an AnnotationProvider instance.
034     */
035    AnnotationProvider getClassAnnotationProvider();
036
037    /**
038     * Returns a provider for annotations of a method of the class. This includes annotations on
039     * the implementation method, plus annotations on the corresponding service interface method
040     * (if such a method exists), with precedence on the implementation class method annotations.
041     * @param methodName the name of the method.
042     * @param parameterTypes the types of the parameters of the method.
043     * @return an AnnotationProvider instance.     * 
044     */
045    AnnotationProvider getMethodAnnotationProvider(String methodName, Class... parameterTypes);
046
047}