Spring Framework example source code file (AnnotationBeanUtils.java)

This example Spring Framework source code file (AnnotationBeanUtils.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" ^TM.

Java - Spring Framework tags/keywords

annotation, annotationbeanutils, beanwrapper, beanwrapper, method, method, object, object, reflection, set, string, string, util

The Spring Framework AnnotationBeanUtils.java source code

/*
 * Copyright 2002-2008 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
 *
 *      http://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.beans.annotation;

import java.lang.annotation.Annotation;
import java.lang.reflect.Method;
import java.util.Arrays;
import java.util.HashSet;
import java.util.Set;

import org.springframework.beans.BeanWrapper;
import org.springframework.beans.PropertyAccessorFactory;
import org.springframework.util.ReflectionUtils;

/**
 * General utility methods for working with annotations in JavaBeans style.
 *
 * @author Rob Harrop
 * @author Juergen Hoeller
 * @since 2.0
 */
public abstract class AnnotationBeanUtils {

	/**
	 * Copy the properties of the supplied {@link Annotation} to the supplied target bean.
	 * Any properties defined in <code>excludedProperties will not be copied.
	 * @see org.springframework.beans.BeanWrapper
	 */
	public static void copyPropertiesToBean(Annotation ann, Object bean, String... excludedProperties) {
		Set<String> excluded =  new HashSet(Arrays.asList(excludedProperties));
		Method[] annotationProperties = ann.annotationType().getDeclaredMethods();
		BeanWrapper bw = PropertyAccessorFactory.forBeanPropertyAccess(bean);
		for (Method annotationProperty : annotationProperties) {
			String propertyName = annotationProperty.getName();
			if ((!excluded.contains(propertyName)) && bw.isWritableProperty(propertyName)) {
				Object value = ReflectionUtils.invokeMethod(annotationProperty, ann);
				bw.setPropertyValue(propertyName, value);
			}
		}
	}

}