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    }