dom_documenttype.hpp

来自「IBM的解析xml的工具Xerces的源代码」· HPP 代码 · 共 176 行

/*
 * Copyright 1999-2002,2004 The Apache Software Foundation.
 * 
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * 
 *      http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

/*
 * $Id: DOM_DocumentType.hpp,v 1.5 2004/09/08 13:55:42 peiyongz Exp $
 */

#ifndef DOM_DocumentType_HEADER_GUARD_
#define DOM_DocumentType_HEADER_GUARD_

#include <xercesc/util/XercesDefs.hpp>
#include "DOM_Node.hpp"

XERCES_CPP_NAMESPACE_BEGIN


class DOM_NamedNodeMap;
class DocumentTypeImpl;

/**
 * Each <code>Document</code> has a <code>doctype</code> whose value
 * is either <code>null</code> or a <code>DocumentType</code> object.
 *
 * The <code>DOM_DocumentType</code> class provides access
 *  to the list of entities and notations that are defined for the document.
 * <p>The DOM Level 1 doesn't support editing <code>DocumentType</code> nodes.
 */
class DEPRECATED_DOM_EXPORT DOM_DocumentType: public DOM_Node {

public:
    /** @name Constructors and assignment operator */
    //@{
    /**
      * Default constructor for DOM_DocumentType.  The resulting object does not
      * refer to an actual DocumentType node; it will compare == to 0, and is similar
      * to a null object reference variable in Java.  It may subsequently be
      * assigned to refer to the actual DocumentType node.
      * <p>
      * A new DocumentType node for a document that does not already have one
      * can be created by DOM_Document::createDocumentType().
      *
      */
    DOM_DocumentType();

    /**
      * Constructor for a null DOM_DocumentType.
      * This allows passing 0 directly as a null DOM_DocumentType to
      * function calls that take DOM_DocumentType as parameters.
      *
      * @param nullPointer Must be 0.
      */
    DOM_DocumentType(int nullPointer);

    /**
      * Copy constructor.  Creates a new <code>DOM_Comment</code> that refers to the
      * same underlying node as the original.
      *
      *
      * @param other The object to be copied.
      */
    DOM_DocumentType(const DOM_DocumentType &other);


    /**
      * Assignment operator.
      *
      * @param other The object to be copied.
      */
    DOM_DocumentType & operator = (const DOM_DocumentType &other);

    /**
      * Assignment operator.  This overloaded variant is provided for
      *   the sole purpose of setting a DOM_Node reference variable to
      *   zero.  Nulling out a reference variable in this way will decrement
      *   the reference count on the underlying Node object that the variable
      *   formerly referenced.  This effect is normally obtained when reference
      *   variable goes out of scope, but zeroing them can be useful for
      *   global instances, or for local instances that will remain in scope
      *   for an extended time,  when the storage belonging to the underlying
      *   node needs to be reclaimed.
      *
      * @param val   Only a value of 0, or null, is allowed.
      */
    DOM_DocumentType & operator = (const DOM_NullPtr *val);

    //@}
    /** @name Destructor. */
    //@{
	 /**
	  * Destructor for DOM_DocumentType.  The object being destroyed is the reference
      * object, not the underlying DocumentType node itself.
	  *
	  */
    ~DOM_DocumentType();
    //@}

    /** @name Getter functions. */
    //@{
  /**
   * The name of DTD; i.e., the name immediately following the
   * <code>DOCTYPE</code> keyword in an XML source document.
   */
  DOMString       getName() const;

  /**
   * This function returns a  <code>NamedNodeMap</code> containing the general entities, both
   * external and internal, declared in the DTD. Parameter entities are not contained.
   * Duplicates are discarded.
   * <p>
   * Note: this functionality is not implemented in the initial release
   * of the parser, and the returned NamedNodeMap will be empty.
   */
  DOM_NamedNodeMap getEntities() const;


  /**
   * This function returns a named node map containing an entry for
   * each notation declared in a document's DTD.  Duplicates are discarded.
   *
   * <p>
   * Note: this functionality is not implemented in the initial release
   * of the parser, and the returned NamedNodeMap will be empty.
   */
  DOM_NamedNodeMap getNotations() const;
  //@}

    /** @name Functions introduced in DOM Level 2. */
    //@{
    /**
     * Get the public identifier of the external subset.
     *
     * @return The public identifier of the external subset.
     */
    DOMString     getPublicId() const;

    /**
     * Get the system identifier of the external subset.
     *
     * @return The system identifier of the external subset.
     */
    DOMString     getSystemId() const;

    /**
     * Get the internal subset as a string.
     *
     * @return The internal subset as a string.
     */
    DOMString     getInternalSubset() const;
    //@}

protected:
    DOM_DocumentType(DocumentTypeImpl *);

    friend class DOM_Document;
    friend class DOM_DOMImplementation;
};

XERCES_CPP_NAMESPACE_END

#endif