| /* |
| * Copyright (c) 2015, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. Oracle designates this |
| * particular file as subject to the "Classpath" exception as provided |
| * by Oracle in the LICENSE file that accompanied this code. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| package com.sun.org.apache.xpath.internal.jaxp; |
| |
| import java.util.Iterator; |
| import javax.xml.xpath.XPathException; |
| import javax.xml.xpath.XPathNodes; |
| import javax.xml.xpath.XPathEvaluationResult.XPathResultType; |
| import org.w3c.dom.Node; |
| import org.w3c.dom.NodeList; |
| |
| /** |
| * This class implements XPathNodes that represents a set of nodes selected by |
| * evaluating an expression. |
| */ |
| public class XPathNodesImpl implements XPathNodes { |
| Class<Node> elementType; |
| NodeList nodeList = null; |
| |
| public XPathNodesImpl(NodeList nodeList, Class<Node> elementType) { |
| this.nodeList = nodeList; |
| this.elementType = elementType; |
| } |
| |
| @Override |
| public Iterator<Node> iterator() { |
| return new NodeSetIterator<>(elementType); |
| } |
| |
| class NodeSetIterator<E> implements Iterator<E> { |
| int currentIndex; |
| Class<E> elementType; |
| NodeSetIterator(Class<E> elementType) { |
| this.elementType = elementType; |
| } |
| public boolean hasNext() { |
| if (nodeList != null) { |
| return currentIndex < nodeList.getLength(); |
| } |
| |
| return false; |
| } |
| |
| public E next() { |
| if (nodeList != null && nodeList.getLength() > 0) { |
| return elementType.cast(nodeList.item(currentIndex++)); |
| } |
| return null; |
| } |
| } |
| |
| @Override |
| public int size() { |
| if (nodeList != null) { |
| return nodeList.getLength(); |
| } |
| return 0; |
| } |
| |
| @Override |
| public Node get(int index) throws XPathException { |
| if (index <0 || index >= size()) { |
| throw new IndexOutOfBoundsException("Index " + index + " is out of bounds"); |
| } |
| if (nodeList != null) { |
| return nodeList.item(index); |
| } |
| return null; |
| } |
| } |