/* * JBoss, Home of Professional Open Source * Copyright 2005, JBoss Inc., and individual contributors as indicated * 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.jbpm.instantiation; import java.lang.reflect.InvocationTargetException; import java.lang.reflect.Method; import org.apache.commons.logging.Log; import org.apache.commons.logging.LogFactory; import org.dom4j.Element; public class BeanInstantiator extends FieldInstantiator { protected void setPropertyValue(Class clazz, Object newInstance, String propertyName, Element propertyElement) { // create the setter method name from the property name String setterMethodName = "set" + Character.toUpperCase(propertyName.charAt(0)) + propertyName.substring(1); // find the setter method Method method = findSetter(clazz, setterMethodName); // if the setter method was found if (method != null) { // make it accessible method.setAccessible(true); // invoke it Class propertyType = method.getParameterTypes()[0]; Object value = getValue(propertyType, propertyElement); try { method.invoke(newInstance, new Object[] { value }); } catch (IllegalArgumentException e) { log.error("could not set '" + propertyName + "' to: " + value, e); } catch (IllegalAccessException e) { log.error(getClass() + " has no access to " + method, e); } catch (InvocationTargetException e) { log.error(method + " threw exception", e.getCause()); } } else { log.error("property '" + propertyName + "' has no setter method"); } } private Method findSetter(Class clazz, String setterMethodName) { do { Method[] methods = clazz.getDeclaredMethods(); for (int i = 0; i < methods.length; i++) { Method method = methods[i]; if (method.getName().equals(setterMethodName) && method.getParameterTypes().length == 1) return method; } clazz = clazz.getSuperclass(); } while (clazz != null); return null; } private static final Log log = LogFactory.getLog(BeanInstantiator.class); }