001    // Copyright 2007 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    
015    package org.apache.tapestry5.ioc.internal;
016    
017    import org.apache.tapestry5.ioc.AnnotationProvider;
018    
019    import java.lang.annotation.Annotation;
020    
021    /**
022     * A null implementation of {@link AnnotationProvider}, used when there is not appropriate source of annotations.
023     */
024    public class NullAnnotationProvider implements AnnotationProvider
025    {
026        /**
027         * Always returns null.
028         */
029        public <T extends Annotation> T getAnnotation(Class<T> annotationClass)
030        {
031            return null;
032        }
033    
034    }