Java tutorial
/* * 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. */ /* * This file is available under and governed by the GNU General Public * License version 2 only, as published by the Free Software Foundation. * However, the following notice accompanied the original version of this * file and, per its terms, should not be removed: * * Copyright (c) 2004 World Wide Web Consortium, * * (Massachusetts Institute of Technology, European Research Consortium for * Informatics and Mathematics, Keio University). All Rights Reserved. This * work is distributed under the W3C(r) Software License [1] 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. * * [1] http://www.w3.org/Consortium/Legal/2002/copyright-software-20021231 */ package org.w3c.dom; /** * <code>DocumentFragment</code> is a "lightweight" or "minimal" * <code>Document</code> object. It is very common to want to be able to * extract a portion of a document's tree or to create a new fragment of a * document. Imagine implementing a user command like cut or rearranging a * document by moving fragments around. It is desirable to have an object * which can hold such fragments and it is quite natural to use a Node for * this purpose. While it is true that a <code>Document</code> object could * fulfill this role, a <code>Document</code> object can potentially be a * heavyweight object, depending on the underlying implementation. What is * really needed for this is a very lightweight object. * <code>DocumentFragment</code> is such an object. * <p>Furthermore, various operations -- such as inserting nodes as children * of another <code>Node</code> -- may take <code>DocumentFragment</code> * objects as arguments; this results in all the child nodes of the * <code>DocumentFragment</code> being moved to the child list of this node. * <p>The children of a <code>DocumentFragment</code> node are zero or more * nodes representing the tops of any sub-trees defining the structure of * the document. <code>DocumentFragment</code> nodes do not need to be * well-formed XML documents (although they do need to follow the rules * imposed upon well-formed XML parsed entities, which can have multiple top * nodes). For example, a <code>DocumentFragment</code> might have only one * child and that child node could be a <code>Text</code> node. Such a * structure model represents neither an HTML document nor a well-formed XML * document. * <p>When a <code>DocumentFragment</code> is inserted into a * <code>Document</code> (or indeed any other <code>Node</code> that may * take children) the children of the <code>DocumentFragment</code> and not * the <code>DocumentFragment</code> itself are inserted into the * <code>Node</code>. This makes the <code>DocumentFragment</code> very * useful when the user wishes to create nodes that are siblings; the * <code>DocumentFragment</code> acts as the parent of these nodes so that * the user can use the standard methods from the <code>Node</code> * interface, such as <code>Node.insertBefore</code> and * <code>Node.appendChild</code>. * <p>See also the <a href='http://www.w3.org/TR/2004/REC-DOM-Level-3-Core-20040407'>Document Object Model (DOM) Level 3 Core Specification</a>. */ public interface DocumentFragment extends Node { }