ClickHouse/base/poco/XML/include/Poco/DOM/NodeAppender.h

//
// NodeAppender.h
//
// Library: XML
// Package: DOM
// Module:  NodeAppender
//
// Definition of the NodeAppender class.
//
// Copyright (c) 2007, Applied Informatics Software Engineering GmbH.
// and Contributors.
//
// SPDX-License-Identifier:	BSL-1.0
//


#ifndef DOM_NodeAppender_INCLUDED
#define DOM_NodeAppender_INCLUDED


#include "Poco/DOM/Node.h"
#include "Poco/XML/XML.h"


namespace Poco
{
namespace XML
{


    class AbstractNode;
    class Element;


    class XML_API NodeAppender
    /// The NodeAppender class provides a very fast way to
    /// build larger DOM documents.
    ///
    /// In the DOM, child nodes are usually appended to a parent
    /// node using the appendChild() method. For nodes containing
    /// more than a few children, this method can be quite slow,
    /// due to the way it's implemented, and because of the
    /// requirements of the DOM specification.
    ///
    /// While the NodeAppender is being used on an Element, no
    /// children-modifying methods of that Element must be used.
    ///
    /// This class is not part of the DOM specification.
    {
    public:
        NodeAppender(Element * parent);
        /// Creates the NodeAppender for the given parent node,
        /// which must be an Element.

        ~NodeAppender();
        /// Destroys the NodeAppender.

        void appendChild(Node * newChild);
        /// Appends the node newChild to the end of the list of children of
        /// the parent node specified in the constructor.
        /// If the newChild is already in the tree, it is first removed.
        ///
        /// NewChild can be a DocumentFragment. In this case, all children
        /// of the fragment become children of the parent element.
        ///
        /// In order to speed up the function, no DOM events
        /// are fired.

    private:
        NodeAppender();
        NodeAppender(const NodeAppender &);
        NodeAppender & operator=(const NodeAppender &);

        Element * _pParent;
        AbstractNode * _pLast;
    };


}
} // namespace Poco::XML


#endif // #include "Poco/XML/XML.h"