1 | /* |
2 | * Copyright 2014 the original author or authors. |
3 | * |
4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
5 | * you may not use this file except in compliance with the License. |
6 | * You may obtain a copy of the License at |
7 | * |
8 | * http://www.apache.org/licenses/LICENSE-2.0 |
9 | * |
10 | * Unless required by applicable law or agreed to in writing, software |
11 | * distributed under the License is distributed on an "AS IS" BASIS, |
12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
13 | * See the License for the specific language governing permissions and |
14 | * limitations under the License. |
15 | */ |
16 | package org.springframework.batch.support; |
17 | |
18 | import org.springframework.core.annotation.AnnotationUtils; |
19 | |
20 | import java.lang.annotation.Annotation; |
21 | import java.lang.reflect.Method; |
22 | import java.util.HashSet; |
23 | import java.util.Set; |
24 | |
25 | /** |
26 | * Provides reflection based utilities for Spring Batch that are not available |
27 | * via Spring Core |
28 | * |
29 | * @author Michael Minella |
30 | * @since 2.2.6 |
31 | */ |
32 | public class ReflectionUtils { |
33 | |
34 | private ReflectionUtils() {} |
35 | |
36 | /** |
37 | * Returns a {@link java.util.Set} of {@link java.lang.reflect.Method} instances that |
38 | * are annotated with the annotation provided. |
39 | * |
40 | * @param clazz The class to search for a method with the given annotation type |
41 | * @param annotationType The type of annotation to look for |
42 | * @return a set of {@link java.lang.reflect.Method} instances if any are found, an empty set if not. |
43 | */ |
44 | public static final Set<Method> findMethod(Class clazz, Class<? extends Annotation> annotationType) { |
45 | |
46 | Method [] declaredMethods = org.springframework.util.ReflectionUtils.getAllDeclaredMethods(clazz); |
47 | Set<Method> results = new HashSet<Method>(); |
48 | |
49 | for (Method curMethod : declaredMethods) { |
50 | Annotation annotation = AnnotationUtils.findAnnotation(curMethod, annotationType); |
51 | |
52 | if(annotation != null) { |
53 | results.add(curMethod); |
54 | } |
55 | } |
56 | |
57 | return results; |
58 | } |
59 | } |