com.sun.enterprise.util.BeanUtils Maven / Gradle / Ivy
Go to download
Show more of this group Show more artifacts with this name
Show all versions of payara-micro Show documentation
Show all versions of payara-micro Show documentation
Micro Distribution of the Payara Project for IBM JDK
/*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
*
* Copyright (c) 2013 Oracle and/or its affiliates. All rights reserved.
*
* The contents of this file are subject to the terms of either the GNU
* General Public License Version 2 only ("GPL") or the Common Development
* and Distribution License("CDDL") (collectively, the "License"). You
* may not use this file except in compliance with the License. You can
* obtain a copy of the License at
* https://glassfish.dev.java.net/public/CDDL+GPL_1_1.html
* or packager/legal/LICENSE.txt. See the License for the specific
* language governing permissions and limitations under the License.
*
* When distributing the software, include this License Header Notice in each
* file and include the License file at packager/legal/LICENSE.txt.
*
* GPL Classpath Exception:
* Oracle designates this particular file as subject to the "Classpath"
* exception as provided by Oracle in the GPL Version 2 section of the License
* file that accompanied this code.
*
* Modifications:
* If applicable, add the following below the License Header, with the fields
* enclosed by brackets [] replaced by your own identifying information:
* "Portions Copyright [year] [name of copyright owner]"
*
* Contributor(s):
* If you wish your version of this file to be governed by only the CDDL or
* only the GPL Version 2, indicate your decision by adding "[Contributor]
* elects to include this software in this distribution under the [CDDL or GPL
* Version 2] license." If you don't indicate a single choice of license, a
* recipient has the option to distribute your version of this file under
* either the CDDL, the GPL Version 2 or to extend the choice of license to
* its licensees as provided above. However, if you add GPL Version 2 code
* and therefore, elected the GPL Version 2 license, then the option applies
* only if the new code is made subject to such option by the copyright
* holder.
*/
package com.sun.enterprise.util;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.util.ArrayList;
import java.util.Collection;
import java.util.HashMap;
import java.util.Map;
import java.util.logging.Level;
import java.util.logging.Logger;
/** Static methods which are handy to manipulate java beans
*
* @author martinmares
*/
public class BeanUtils {
/** Loads all getters to the Map.
*/
public static Map beanToMap(Object bean) throws InvocationTargetException {
if (bean == null) {
return null;
}
Map result = new HashMap();
Collection getters = getGetters(bean);
for (Method method : getGetters(bean)) {
try {
result.put(toAttributeName(method), method.invoke(bean));
} catch (IllegalAccessException ex) {
//Checked - can not happen
} catch (IllegalArgumentException ex) {
//Checked - can not happen
}
}
return result;
}
/** Sets values from map to provided bean.
*
* @param bean Set to its setters
* @param data key is attribute name and value is value to set
* @param ignoreNotExistingSetter if {@code false} and data contains key which
* does not point to any setter then IllegalArgumentException will be thrown
*/
public static void mapToBean(Object bean, Map data, boolean ignoreNotExistingSetter)
throws InvocationTargetException, IllegalArgumentException {
if (data == null || bean == null) {
return;
}
Class clazz = bean.getClass();
for (Map.Entry entry : data.entrySet()) {
try {
Method mtd = getSetter(bean, entry.getKey());
if (mtd == null) {
if (!ignoreNotExistingSetter) {
throw new IllegalArgumentException();
}
continue;
}
mtd.invoke(bean, entry.getValue());
} catch (IllegalAccessException ex) {
}
}
}
public static Collection getGetters(Object bean) {
if (bean == null) {
return null;
}
Collection result = new ArrayList();
for (Method method : bean.getClass().getMethods()) {
if (method.getDeclaringClass() == Object.class) {
continue;
}
if (method.getParameterTypes().length == 0) {
if ((method.getName().length() > 3 && method.getName().startsWith("get"))
|| (method.getName().length() > 2 && method.getName().startsWith("is"))) {
result.add(method);
}
}
}
return result;
}
public static Collection getSetters(Object bean) {
if (bean == null) {
return null;
}
Collection result = new ArrayList();
for (Method method : bean.getClass().getMethods()) {
if (method.getDeclaringClass() == Object.class) {
continue;
}
if (method.getParameterTypes().length == 1) {
if (method.getName().length() > 3 && method.getName().startsWith("set")) {
result.add(method);
}
}
}
return result;
}
/** Extract attribute name from getter or setter.
*
* @return IllegalArgumentException if method is not getter or setter.
*/
public static String toAttributeName(Method m) throws IllegalArgumentException {
String name = m.getName();
String result;
if (name.startsWith("get") || name.startsWith("set")) {
result = name.substring(3);
} else if (name.startsWith("is")) {
result = name.substring(2);
} else {
throw new IllegalArgumentException();
}
if (result.length() == 0) {
throw new IllegalArgumentException();
}
result = Character.toLowerCase(result.charAt(0)) + result.substring(1);
return result;
}
public static Method getSetter(Object bean, String attributeName) {
String methodName = "set" + Character.toUpperCase(attributeName.charAt(0)) + attributeName.substring(1);
for (Method m : bean.getClass().getMethods()) {
if (m.getParameterTypes().length == 1 && m.getName().equals(methodName)) {
return m;
}
}
return null;
}
}
© 2015 - 2024 Weber Informatics LLC | Privacy Policy