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// NamedNodeMap.h
//
// Library: XML
// Package: DOM
// Module: DOM
//
// Definition of the DOM NamedNodeMap interface.
//
// Copyright (c) 2004-2006, Applied Informatics Software Engineering GmbH.
// and Contributors.
//
// SPDX-License-Identifier: BSL-1.0
//
#ifndef DOM_NamedNodeMap_INCLUDED
#define DOM_NamedNodeMap_INCLUDED
#include "Poco/XML/XML.h"
#include "Poco/DOM/DOMObject.h"
#include "Poco/XML/XMLString.h"
namespace Poco {
namespace XML {
class Node;
class XML_API NamedNodeMap: public DOMObject
/// Objects implementing the NamedNodeMap interface are used to represent collections
/// of nodes that can be accessed by name. Note that NamedNodeMap does not inherit
/// from NodeList; NamedNodeMaps are not maintained in any particular order.
/// Objects contained in an object implementing NamedNodeMap may also be accessed
/// by an ordinal index, but this is simply to allow convenient enumeration
/// of the contents of a NamedNodeMap, and does not imply that the DOM specifies
/// an order to these Nodes.
///
/// NamedNodeMap objects in the DOM are live.
///
/// A NamedNodeMap returned from a method must be released with a call to
/// release() when no longer needed.
{
public:
virtual Node* getNamedItem(const XMLString& name) const = 0;
/// Retrieves a node specified by name.
virtual Node* setNamedItem(Node* arg) = 0;
/// Adds a node using its nodeName attribute. If a node with that name is already
/// present in this map, it is replaced by the new one.
/// As the nodeName attribute is used to derive the name which the node must
/// be stored under, multiple nodes of certain types (those that have a "special"
/// string value) cannot be stored as the names would clash. This is seen as
/// preferable to allowing nodes to be aliased.
virtual Node* removeNamedItem(const XMLString& name) = 0;
/// Removes a node specified by name. When this map contains the attributes
/// attached to an element, if the removed attribute is known to have a default
/// value, an attribute immediately appears containing the default value.
virtual Node* item(unsigned long index) const = 0;
/// Returns the index'th item in the map. If index is greater
/// than or equal to the number of nodes in the map, this
/// returns null.
virtual unsigned long length() const = 0;
/// Returns the number of nodes in the map. The range of valid
/// child node indices is 0 to length - 1 inclusive.
// DOM Level 2
virtual Node* getNamedItemNS(const XMLString& namespaceURI, const XMLString& localName) const = 0;
/// Retrieves a node specified by name.
virtual Node* setNamedItemNS(Node* arg) = 0;
/// Adds a node using its nodeName attribute.
/// If a node with that namespace URI and that local name is already
/// present in this map, it is replaced by the new one.
virtual Node* removeNamedItemNS(const XMLString& namespaceURI, const XMLString& localName) = 0;
/// Removes a node specified by name.
protected:
virtual ~NamedNodeMap();
};
} } // namespace Poco::XML
#endif // DOM_NamedNodeMap_INCLUDED
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