    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 */
    017
    018package org.apache.commons.jxpath.ri.model.beans;
    019
    020import org.apache.commons.jxpath.ri.QName;
    021import org.apache.commons.jxpath.ri.model.NodePointer;
    022
    023/**
    024 * An iterator of attributes of a JavaBean. Returns bean properties as well as the "xml:lang" attribute.
    025 */
    026public class BeanAttributeIterator extends PropertyIterator {
    027
    028    private final NodePointer parent;
    029    private int position;
    030    private final boolean includeXmlLang;
    031
    032    /**
    033     * Constructs a new BeanAttributeIterator.
    034     *
    035     * @param parent parent pointer
    036     * @param qName   name of this bean
    037     */
    038    public BeanAttributeIterator(final PropertyOwnerPointer parent, final QName qName) {
    039        super(parent, qName.getPrefix() == null && (qName.getName() == null || qName.getName().equals("*")) ? null : qName.toString(), false, null);
    040        this.parent = parent;
    041        includeXmlLang = qName.getPrefix() != null && qName.getPrefix().equals("xml") && (qName.getName().equals("lang") || qName.getName().equals("*"));
    042    }
    043
    044    @Override
    045    public NodePointer getNodePointer() {
    046        return includeXmlLang && position == 1 ? new LangAttributePointer(parent) : super.getNodePointer();
    047    }
    048
    049    @Override
    050    public int getPosition() {
    051        return position;
    052    }
    053
    054    @Override
    055    public boolean setPosition(final int position) {
    056        this.position = position;
    057        if (includeXmlLang) {
    058            return position == 1 || super.setPosition(position - 1);
    059        }
    060        return super.setPosition(position);
    061    }
    062}