JDK14/Java14源码在线阅读

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 * Licensed to the Apache Software Foundation (ASF) under one or more
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 * (the "License"); you may not use this file except in compliance with
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 *      http://www.apache.org/licenses/LICENSE-2.0
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package com.sun.org.apache.xml.internal.dtm.ref;
import org.w3c.dom.Node;

/**
 * <code>DTMNodeList</code> gives us an implementation of the DOM's
 * NodeList interface wrapped around a DTM Iterator. The author
 * considers this something of an abominations, since NodeList was not
 * intended to be a general purpose "list of nodes" API and is
 * generally considered by the DOM WG to have be a mistake... but I'm
 * told that some of the XPath/XSLT folks say they must have this
 * solution.
 *
 * Please note that this is not necessarily equivlaent to a DOM
 * NodeList operating over the same document. In particular:
 * <ul>
 *
 * <li>If there are several Text nodes in logical succession (ie,
 * across CDATASection and EntityReference boundaries), we will return
 * only the first; the caller is responsible for stepping through
 * them.
 * (%REVIEW% Provide a convenience routine here to assist, pending
 * proposed DOM Level 3 getAdjacentText() operation?) </li>
 *
 * <li>Since the whole XPath/XSLT architecture assumes that the source
 * document is not altered while we're working with it, we do not
 * promise to implement the DOM NodeList's "live view" response to
 * document mutation. </li>
 *
 * </ul>
 *
 * <p>State: In progress!!</p>
 *
 */
public class DTMNodeListBase implements org.w3c.dom.NodeList {
    public DTMNodeListBase() {
    }

    //================================================================
    // org.w3c.dom.NodeList API follows

    /**
     * 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

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