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//
// NodeList.h
//
// Library: XML
// Package: DOM
// Module: DOM
//
// Definition of the DOM NodeList interface.
//
// Copyright (c) 2004-2006, Applied Informatics Software Engineering GmbH.
// and Contributors.
//
// SPDX-License-Identifier: BSL-1.0
//
#ifndef DOM_NodeList_INCLUDED
#define DOM_NodeList_INCLUDED
#include "Poco/XML/XML.h"
#include "Poco/DOM/DOMObject.h"
namespace Poco {
namespace XML {
class Node;
class XML_API NodeList: public DOMObject
/// The NodeList interface provides the abstraction of an ordered
/// collection of nodes, without defining or constraining how this
/// collection is implemented.
///
/// The items in the NodeList are accessible via an integral index,
/// starting from 0.
///
/// A NodeList returned from a method must be released with a call to
/// release() when no longer needed.
{
public:
virtual Node* item(unsigned long index) const = 0;
/// Returns the index'th item in the collection. If index is
/// greater than or equal to the number of nodes in the list,
/// this returns null.
virtual unsigned long length() const = 0;
/// Returns the number of nodes in the list. The range of valid
/// node indices is 0 to length - 1 inclusive.
protected:
virtual ~NodeList();
};
} } // namespace Poco::XML
#endif // DOM_NodeList_INCLUDED
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