/* * 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.configuration; import java.io.Serializable; import java.lang.reflect.Field; import org.w3c.dom.Element; import org.jbpm.JbpmException; import org.jbpm.util.XmlUtil; public class FieldInfo implements Serializable { private final String fieldName; private final ObjectInfo fieldValueInfo; private static final long serialVersionUID = 1L; public FieldInfo(Element fieldElement, ObjectFactoryParser configParser) { // field name if (fieldElement.hasAttribute("name")) { fieldName = fieldElement.getAttribute("name"); } else { throw new JbpmException("missing name or setter attribute in property"); } // value info Element propertyValueElement = XmlUtil.element(fieldElement); fieldValueInfo = configParser.parse(propertyValueElement); } public void injectProperty(Object object, ObjectFactoryImpl objectFactory) { Object value = objectFactory.getObject(fieldValueInfo); Field field = findField(object.getClass()); try { field.set(object, value); } catch (IllegalAccessException e) { throw new JbpmException(getClass() + " has no access to " + field, e); } } private Field findField(Class type) { try { return type.getField(fieldName); } catch (NoSuchFieldException e) { for (Class ancestor = type; ancestor != Object.class; ancestor = ancestor.getSuperclass()) { try { Field field = ancestor.getDeclaredField(fieldName); field.setAccessible(true); return field; } catch (NoSuchFieldException e2) { // keep looking } } throw new JbpmException("missing field '" + "' in " + type); } } }