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129 lines
3.7 KiB
C++
129 lines
3.7 KiB
C++
//
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// Entity.h
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//
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// $Id: //poco/1.4/XML/include/Poco/DOM/Entity.h#1 $
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//
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// Library: XML
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// Package: DOM
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// Module: DOM
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//
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// Definition of the DOM Entity class.
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//
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// Copyright (c) 2004-2006, Applied Informatics Software Engineering GmbH.
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// and Contributors.
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//
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// SPDX-License-Identifier: BSL-1.0
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//
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#ifndef DOM_Entity_INCLUDED
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#define DOM_Entity_INCLUDED
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#include "Poco/XML/XML.h"
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#include "Poco/DOM/AbstractContainerNode.h"
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#include "Poco/XML/XMLString.h"
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namespace Poco {
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namespace XML {
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class XML_API Entity: public AbstractContainerNode
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/// This interface represents an entity, either parsed or unparsed, in an XML
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/// document. Note that this models the entity itself not the entity declaration.
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/// Entity declaration modeling has been left for a later Level of the DOM
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/// specification.
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///
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/// The nodeName attribute that is inherited from Node contains the name of
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/// the entity.
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///
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/// An XML processor may choose to completely expand entities before the structure
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/// model is passed to the DOM; in this case there will be no EntityReference
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/// nodes in the document tree.
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///
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/// XML does not mandate that a non-validating XML processor read and process
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/// entity declarations made in the external subset or declared in external
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/// parameter entities. This means that parsed entities declared in the external
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/// subset need not be expanded by some classes of applications, and that the
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/// replacement value of the entity may not be available. When the replacement
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/// value is available, the corresponding Entity node's child list represents
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/// the structure of that replacement text. Otherwise, the child list is empty.
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///
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/// The resolution of the children of the Entity (the replacement value) may
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/// be lazily evaluated; actions by the user (such as calling the childNodes
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/// method on the Entity Node) are assumed to trigger the evaluation.
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///
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/// The DOM Level 1 does not support editing Entity nodes; if a user wants to
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/// make changes to the contents of an Entity, every related EntityReference
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/// node has to be replaced in the structure model by a clone of the Entity's
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/// contents, and then the desired changes must be made to each of those clones
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/// instead. Entity nodes and all their descendants are readonly.
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///
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/// An Entity node does not have any parent.
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{
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public:
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const XMLString& publicId() const;
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/// Returns the public identifier associated with
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/// the entity, if specified. If the public identifier
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/// was not specified, this is the empty string.
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const XMLString& systemId() const;
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/// Returns the system identifier associated with
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/// the entity, if specified. If the system identifier
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/// was not specified, this is the empty string.
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const XMLString& notationName() const;
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/// Returns, for unparsed entities, the name of the
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/// notation for the entity. For parsed entities, this
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/// is the empty string.
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// Node
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const XMLString& nodeName() const;
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unsigned short nodeType() const;
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protected:
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Entity(Document* pOwnerDocument, const XMLString& name, const XMLString& publicId, const XMLString& systemId, const XMLString& notationName);
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Entity(Document* pOwnerDocument, const Entity& entity);
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~Entity();
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Node* copyNode(bool deep, Document* pOwnerDocument) const;
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private:
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static const XMLString NODE_NAME;
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XMLString _name;
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XMLString _publicId;
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XMLString _systemId;
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XMLString _notationName;
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friend class Document;
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};
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//
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// inlines
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//
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inline const XMLString& Entity::publicId() const
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{
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return _publicId;
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}
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inline const XMLString& Entity::systemId() const
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{
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return _systemId;
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}
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inline const XMLString& Entity::notationName() const
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{
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return _notationName;
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}
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} } // namespace Poco::XML
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#endif // DOM_Entity_INCLUDED
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