com.nervousync.utils.BeanUtils Maven / Gradle / Ivy
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/*
* Licensed to the Nervousync Studio (NSYC) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You 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 com.nervousync.utils;
import java.io.IOException;
import java.util.Hashtable;
import net.sf.cglib.beans.BeanCopier;
import net.sf.cglib.core.Converter;
import com.nervousync.exceptions.beans.BeansException;
/**
* @author Steven Wee [email protected]
* @version $Revision: 1.0 $ $Date: Jun 25, 2015 2:55:15 PM $
*/
public final class BeanUtils {
private static Hashtable BEAN_COPIER_MAP = new Hashtable();
private BeanUtils() {
}
/**
* Copy the property values of the given source bean into the target bean.
* Note: The source and target classes do not have to match or even be derived
* from each other, as long as the properties match. Any bean properties that the
* source bean exposes but the target bean does not will silently be ignored.
*
This is just a convenience method. For more complex transfer needs,
* consider using a full BeanWrapper.
* @param orig the source bean
* @param dest the target bean
* @throws BeansException if the copying failed
*/
public static void copyProperties(Object orig, Object dest) throws BeansException {
BeanUtils.copyProperties(orig, dest, null);
}
/**
* Copy the property values of the given source bean into the target bean.
*
Note: The source and target classes do not have to match or even be derived
* from each other, as long as the properties match. Any bean properties that the
* source bean exposes but the target bean does not will silently be ignored.
*
This is just a convenience method. For more complex transfer needs,
* consider using a full BeanWrapper.
* @param orig the source bean
* @param dest the target bean
* @param converter converter instance
* @throws BeansException if the copying failed
*/
public static void copyProperties(Object orig, Object dest, Converter converter) throws BeansException {
BeanCopier beanCopier = null;
try {
String cacheKey = null;
if (converter == null) {
cacheKey = BeanUtils.generateKey(orig.getClass(), dest.getClass(), null);
} else {
cacheKey = BeanUtils.generateKey(orig.getClass(), dest.getClass(), converter.getClass());
}
if (BeanUtils.BEAN_COPIER_MAP.containsKey(cacheKey)) {
beanCopier = BeanUtils.BEAN_COPIER_MAP.get(cacheKey);
} else {
if (converter == null) {
beanCopier = BeanCopier.create(orig.getClass(), dest.getClass(), false);
} else {
beanCopier = BeanCopier.create(orig.getClass(), dest.getClass(), true);
}
BeanUtils.BEAN_COPIER_MAP.put(cacheKey, beanCopier);
}
beanCopier.copy(orig, dest, converter);
} catch (IOException e) {
throw new BeansException("Copy properties error! ", e);
}
}
private static String generateKey(Class origClass, Class destClass, Class converterClass) throws IOException {
if (converterClass == null) {
return SecurityUtils.MD5(origClass.getName() + "To" + destClass.getName());
} else {
return SecurityUtils.MD5(origClass.getName() + "To" + destClass.getName() + "Converter:" + converterClass.getName());
}
}
}