    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    package org.apache.commons.jxpath.ri.model.beans;
    018
    019    import org.apache.commons.jxpath.ri.QName;
    020    import org.apache.commons.jxpath.ri.model.NodePointer;
    021
    022    /**
    023     * An iterator of attributes of a JavaBean. Returns bean properties as
    024     * well as the "xml:lang" attribute.
    025     *
    026     * @author Dmitri Plotnikov
    027     * @version $Revision: 652845 $ $Date: 2008-05-02 12:46:46 -0500 (Fri, 02 May 2008) $
    028     */
    029    public class BeanAttributeIterator extends PropertyIterator {
    030        private NodePointer parent;
    031        private int position = 0;
    032        private boolean includeXmlLang;
    033
    034        /**
    035         * Create a new BeanAttributeIterator.
    036         * @param parent parent pointer
    037         * @param name name of this bean
    038         */
    039        public BeanAttributeIterator(PropertyOwnerPointer parent, QName name) {
    040            super(
    041                parent,
    042                (name.getPrefix() == null
    043                    && (name.getName() == null || name.getName().equals("*")))
    044                    ? null
    045                    : name.toString(),
    046                false,
    047                null);
    048            this.parent = parent;
    049            includeXmlLang =
    050                (name.getPrefix() != null && name.getPrefix().equals("xml"))
    051                    && (name.getName().equals("lang")
    052                    || name.getName().equals("*"));
    053        }
    054
    055        public NodePointer getNodePointer() {
    056            return includeXmlLang && position == 1 ? new LangAttributePointer(parent) : super.getNodePointer();
    057        }
    058
    059        public int getPosition() {
    060            return position;
    061        }
    062
    063        public boolean setPosition(int position) {
    064            this.position = position;
    065            if (includeXmlLang) {
    066                return position == 1 || super.setPosition(position - 1);
    067            }
    068            return super.setPosition(position);
    069        }
    070    }