org.springframework.batch.support.ReflectionUtils Maven / Gradle / Ivy
/*
* Copyright 2014 the original author or authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* https://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.springframework.batch.support;
import java.lang.annotation.Annotation;
import java.lang.reflect.Method;
import java.util.HashSet;
import java.util.Set;
import org.springframework.core.annotation.AnnotationUtils;
/**
* Provides reflection based utilities for Spring Batch that are not available
* via Spring Core
*
* @author Michael Minella
* @since 2.2.6
*/
public class ReflectionUtils {
private ReflectionUtils() {}
/**
* Returns a {@link java.util.Set} of {@link java.lang.reflect.Method} instances that
* are annotated with the annotation provided.
*
* @param clazz The class to search for a method with the given annotation type
* @param annotationType The type of annotation to look for
* @return a set of {@link java.lang.reflect.Method} instances if any are found, an empty set if not.
*/
@SuppressWarnings("rawtypes")
public static final Set findMethod(Class clazz, Class annotationType) {
Method [] declaredMethods = org.springframework.util.ReflectionUtils.getAllDeclaredMethods(clazz);
Set results = new HashSet<>();
for (Method curMethod : declaredMethods) {
Annotation annotation = AnnotationUtils.findAnnotation(curMethod, annotationType);
if(annotation != null) {
results.add(curMethod);
}
}
return results;
}
}