https://openjdk.java.net/ 
/*
 * 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;


DocumentFragment is a "lightweight" or "minimal"
Document 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 Document object could
fulfill this role, a Document object can potentially be a
heavyweight object, depending on the underlying implementation. What is
really needed for this is a very lightweight object.
DocumentFragment is such an object.

Furthermore, various operations -- such as inserting nodes as children
of another Node -- may take DocumentFragment
objects as arguments; this results in all the child nodes of the
DocumentFragment being moved to the child list of this node.

The children of a DocumentFragment node are zero or more
nodes representing the tops of any sub-trees defining the structure of
the document. DocumentFragment 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 DocumentFragment might have only one
child and that child node could be a Text node. Such a
structure model represents neither an HTML document nor a well-formed XML
document.

When a DocumentFragment is inserted into a
Document (or indeed any other Node that may
take children) the children of the DocumentFragment and not
the DocumentFragment itself are inserted into the
Node. This makes the DocumentFragment very
useful when the user wishes to create nodes that are siblings; the
DocumentFragment acts as the parent of these nodes so that
the user can use the standard methods from the Node
interface, such as Node.insertBefore and
Node.appendChild.

See also the Document Object Model (DOM) Level 3 Core Specification.

/**
 * <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 {
}