/*
* JBoss, Home of Professional Open Source
* Copyright 2013, Red Hat, Inc. and individual contributors
* by the @authors tag. See the copyright.txt in the distribution for a
* full listing of individual contributors.
*
* This is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation; either version 2.1 of
* the License, or (at your option) any later version.
*
* This software is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this software; if not, write to the Free
* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA, or see the FSF site: http://www.fsf.org.
*/
package org.ajax4jsf.javascript;
import org.richfaces.log.Logger;
import org.richfaces.log.RichfacesLogger;
import java.beans.BeanInfo;
import java.beans.IntrospectionException;
import java.beans.Introspector;
import java.beans.PropertyDescriptor;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.text.MessageFormat;
/**
* @author Nick Belaevski
* @since 4.0
*/
final class PropertyUtils {
private static final PropertyDescriptor[] EMPTY_DESCRIPTORS_ARRAY = new PropertyDescriptor[0];
private static final Logger LOGGER = RichfacesLogger.APPLICATION.getLogger();
private PropertyUtils() {
// private constructor of pure utility methods class
}
public static PropertyDescriptor[] getPropertyDescriptors(Object bean) {
if (bean == null) {
throw new IllegalArgumentException("argument is null");
}
PropertyDescriptor[] descriptors = null;
try {
BeanInfo beanInfo = Introspector.getBeanInfo(bean.getClass());
descriptors = beanInfo.getPropertyDescriptors();
} catch (IntrospectionException e) {
LOGGER.error(e.getMessage(), e);
}
if (descriptors == null) {
descriptors = EMPTY_DESCRIPTORS_ARRAY;
}
return descriptors;
}
public static Object readPropertyValue(Object bean, PropertyDescriptor descriptor) throws Exception {
Method readMethod = descriptor.getReadMethod();
if (readMethod == null) {
throw new NoSuchMethodException(MessageFormat.format("Read method for property ''{0}'' not found",
descriptor.getName()));
}
try {
return readMethod.invoke(bean);
} catch (InvocationTargetException e) {
Throwable cause = e.getCause();
if (cause instanceof Exception) {
throw (Exception) cause;
} else if (cause instanceof Error) {
throw (Error) cause;
} else {
throw e;
}
}
}
}