001    /**
002     * Licensed to the Apache Software Foundation (ASF) under one or more
003     * contributor license agreements.  See the NOTICE file distributed with
004     * this work for additional information regarding copyright ownership.
005     * The ASF licenses this file to You under the Apache License, Version 2.0
006     * (the "License"); you may not use this file except in compliance with
007     * the License.  You may obtain a copy of the License at
008     *
009     *      http://www.apache.org/licenses/LICENSE-2.0
010     *
011     * Unless required by applicable law or agreed to in writing, software
012     * distributed under the License is distributed on an "AS IS" BASIS,
013     * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014     * See the License for the specific language governing permissions and
015     * limitations under the License.
016     */
017    package org.apache.camel.impl.scan;
018    
019    import java.lang.annotation.Annotation;
020    
021    import org.apache.camel.spi.PackageScanFilter;
022    import org.apache.camel.util.ObjectHelper;
023    
024    /**
025     * Package scan filter for testing if a given class is annotated with a certain annotation.
026     */
027    public class AnnotatedWithPackageScanFilter implements PackageScanFilter {
028    
029        private Class<? extends Annotation> annotation;
030        private boolean checkMetaAnnotations;
031    
032        public AnnotatedWithPackageScanFilter(Class<? extends Annotation> annotation) {
033            this(annotation, false);
034        }
035    
036        public AnnotatedWithPackageScanFilter(Class<? extends Annotation> annotation, boolean checkMetaAnnotations) {
037            this.annotation = annotation;
038            this.checkMetaAnnotations = checkMetaAnnotations;
039        }
040    
041        public boolean matches(Class<?> type) {
042            return type != null && ObjectHelper.hasAnnotation(type, annotation, checkMetaAnnotations);
043        }
044    
045        @Override
046        public String toString() {
047            return "annotated with @" + annotation.getSimpleName();
048        }
049    }