001/*
002 * Licensed to the Apache Software Foundation (ASF) under one or more
003 * contributor license agreements.  See the NOTICE file distributed with
004 * this work for additional information regarding copyright ownership.
005 * The ASF licenses this file to You under the Apache License, Version 2.0
006 * (the "License"); you may not use this file except in compliance with
007 * the License.  You may obtain a copy of the License at
008 *
009 *     http://www.apache.org/licenses/LICENSE-2.0
010 *
011 * Unless required by applicable law or agreed to in writing, software
012 * distributed under the License is distributed on an "AS IS" BASIS,
013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014 * See the License for the specific language governing permissions and
015 * limitations under the License.
016 */
017package org.apache.commons.jxpath.ri.model.dynamic;
018
019import java.util.Locale;
020
021import org.apache.commons.jxpath.DynamicPropertyHandler;
022import org.apache.commons.jxpath.JXPathBeanInfo;
023import org.apache.commons.jxpath.JXPathIntrospector;
024import org.apache.commons.jxpath.ri.QName;
025import org.apache.commons.jxpath.ri.model.NodePointer;
026import org.apache.commons.jxpath.ri.model.NodePointerFactory;
027import org.apache.commons.jxpath.ri.model.beans.NullPointer;
028import org.apache.commons.jxpath.util.ValueUtils;
029
030/**
031 * Implements NodePointerFactory for Dynamic classes like Map.
032 *
033 * @author Dmitri Plotnikov
034 * @version $Revision: 652845 $ $Date: 2008-05-02 13:46:46 -0400 (Fri, 02 May 2008) $
035 */
036public class DynamicPointerFactory implements NodePointerFactory {
037
038    /**
039     * Factory order constant.
040     */
041    public static final int DYNAMIC_POINTER_FACTORY_ORDER = 800;
042
043    public int getOrder() {
044        return DYNAMIC_POINTER_FACTORY_ORDER;
045    }
046
047    public NodePointer createNodePointer(
048        QName name,
049        Object bean,
050        Locale locale) {
051        JXPathBeanInfo bi = JXPathIntrospector.getBeanInfo(bean.getClass());
052        if (bi.isDynamic()) {
053            DynamicPropertyHandler handler =
054                ValueUtils.getDynamicPropertyHandler(
055                    bi.getDynamicPropertyHandlerClass());
056            return new DynamicPointer(name, bean, handler, locale);
057        }
058        return null;
059    }
060
061    public NodePointer createNodePointer(
062        NodePointer parent,
063        QName name,
064        Object bean) {
065        if (bean == null) {
066            return new NullPointer(parent, name);
067        }
068
069        JXPathBeanInfo bi = JXPathIntrospector.getBeanInfo(bean.getClass());
070        if (bi.isDynamic()) {
071            DynamicPropertyHandler handler =
072                ValueUtils.getDynamicPropertyHandler(
073                    bi.getDynamicPropertyHandlerClass());
074            return new DynamicPointer(parent, name, bean, handler);
075        }
076        return null;
077    }
078}