| /* |
| * Copyright 2004,2005 The Apache Software Foundation. |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| package org.apache.axis2.saaj; |
| |
| import org.w3c.dom.Node; |
| import org.w3c.dom.NodeList; |
| |
| import java.util.ArrayList; |
| import java.util.Collections; |
| import java.util.List; |
| |
| /** |
| * The <code>NodeList</code> interface provides the abstraction of an ordered |
| * collection of nodes, without defining or constraining how this collection |
| * is implemented. <code>NodeList</code> objects in the DOM are live. |
| * <p>The items in the <code>NodeList</code> are accessible via an integral |
| * index, starting from 0. |
| * <p>See also the <a href='http://www.w3.org/TR/2000/REC-DOM-Level-2-Core-20001113'>Document Object Model (DOM) Level 2 Core Specification</a>. |
| */ |
| public class NodeListImpl implements NodeList { |
| |
| List mNodes; |
| |
| public static final NodeList EMPTY_NODELIST = new NodeListImpl( |
| Collections.EMPTY_LIST); |
| |
| /** |
| * Constructor and Setter is intensionally made package access only. |
| */ |
| NodeListImpl() { |
| mNodes = new ArrayList(); |
| } |
| |
| NodeListImpl(List nodes) { |
| this(); |
| mNodes.addAll(nodes); |
| } |
| |
| void addNode(org.w3c.dom.Node node) { |
| mNodes.add(node); |
| } |
| |
| void addNodeList(org.w3c.dom.NodeList nodes) { |
| for (int i = 0; i < nodes.getLength(); i++) { |
| mNodes.add(nodes.item(i)); |
| } |
| } |
| |
| /** |
| * Returns the <code>index</code>th item in the collection. If |
| * <code>index</code> is greater than or equal to the number of nodes in |
| * the list, this returns <code>null</code>. |
| * |
| * @param index Index into the collection. |
| * @return The node at the <code>index</code>th position in the |
| * <code>NodeList</code>, or <code>null</code> if that is not a valid |
| * index. |
| */ |
| public Node item(int index) { |
| if (mNodes != null && mNodes.size() > index) { |
| return (Node) mNodes.get(index); |
| } else { |
| return null; |
| } |
| } |
| |
| /** |
| * The number of nodes in the list. The range of valid child node indices |
| * is 0 to <code>length-1</code> inclusive. |
| */ |
| public int getLength() { |
| return mNodes.size(); |
| } |
| |
| } |