contenthandler.hpp

基于属性证书的访问控制源代码,由c++编写,包括openssl,xercesc等

    *            wrapping another exception.
    */
    virtual void endElement
	(
		const XMLCh* const uri,
		const XMLCh* const localname,
		const XMLCh* const qname
	) = 0;

  /**
    * Receive notification of ignorable whitespace in element content.
    *
    * <p>Validating Parsers must use this method to report each chunk
    * of ignorable whitespace (see the W3C XML 1.0 recommendation,
    * section 2.10): non-validating parsers may also use this method
    * if they are capable of parsing and using content models.</p>
    *
    * <p>SAX parsers may return all contiguous whitespace in a single
    * chunk, or they may split it into several chunks; however, all of
    * the characters in any single event must come from the same
    * external entity, so that the Locator provides useful
    * information.</p>
    *
    * <p>The application must not attempt to read from the array
    * outside of the specified range.</p>
    *
    * @param chars The characters from the XML document.
    * @param length The number of characters to read from the array.
    * @exception SAXException Any SAX exception, possibly
    *            wrapping another exception.
    * @see #characters
    */
    virtual void ignorableWhitespace
    (
        const   XMLCh* const    chars
        , const unsigned int    length
    ) = 0;

  /**
    * Receive notification of a processing instruction.
    *
    * <p>The Parser will invoke this method once for each processing
    * instruction found: note that processing instructions may occur
    * before or after the main document element.</p>
    *
    * <p>A SAX parser should never report an XML declaration (XML 1.0,
    * section 2.8) or a text declaration (XML 1.0, section 4.3.1)
    * using this method.</p>
    *
    * @param target The processing instruction target.
    * @param data The processing instruction data, or null if
    *        none was supplied.
    * @exception SAXException Any SAX exception, possibly
    *            wrapping another exception.
    */
    virtual void processingInstruction
    (
        const   XMLCh* const    target
        , const XMLCh* const    data
    ) = 0;

  /**
    * Receive an object for locating the origin of SAX document events.
    *
    * SAX parsers are strongly encouraged (though not absolutely
    * required) to supply a locator: if it does so, it must supply
    * the locator to the application by invoking this method before
    * invoking any of the other methods in the DocumentHandler
    * interface.
    *
    * The locator allows the application to determine the end
    * position of any document-related event, even if the parser is
    * not reporting an error.  Typically, the application will
    * use this information for reporting its own errors (such as
    * character content that does not match an application's
    * business rules). The information returned by the locator
    * is probably not sufficient for use with a search engine.
    *
    * Note that the locator will return correct information only
    * during the invocation of the events in this interface. The
    * application should not attempt to use it at any other time.
    *
    * @param locator An object that can return the location of
    *                any SAX document event. The object is only
    *                'on loan' to the client code and they are not
    *                to attempt to delete or modify it in any way!
    *
    * @see Locator#Locator
    */
    virtual void setDocumentLocator(const Locator* const locator) = 0;

  /**
    * Receive notification of the beginning of a document.
    *
    * <p>The SAX parser will invoke this method only once, before any
    * other methods in this interface or in DTDHandler (except for
    * setDocumentLocator).</p>
    *
    * @exception SAXException Any SAX exception, possibly
    *            wrapping another exception.
    */
    virtual void startDocument() = 0;

  /**
    * Receive notification of the beginning of an element.
    *
    * <p>The Parser will invoke this method at the beginning of every
    * element in the XML document; there will be a corresponding
    * endElement() event for every startElement() event (even when the
    * element is empty). All of the element's content will be
    * reported, in order, before the corresponding endElement()
    * event.</p>
    *
    * <p>Note that the attribute list provided will
    * contain only attributes with explicit values (specified or
    * defaulted): #IMPLIED attributes will be omitted.</p>
    *
    * @param uri The URI of the asscioated namespace for this element
	* @param localname The local part of the element name
	* @param qname The QName of this element
    * @param attrs The attributes attached to the element, if any.
    * @exception SAXException Any SAX exception, possibly
    *            wrapping another exception.
    * @see #endElement
    * @see Attributes#Attributes
    */
    virtual void startElement
    (
        const   XMLCh* const    uri,
        const   XMLCh* const    localname,
        const   XMLCh* const    qname,
        const   Attributes&     attrs
    ) = 0;

  /**
    * Receive notification of the start of an namespace prefix mapping.
    *
    * <p>By default, do nothing.  Application writers may override this
    * method in a subclass to take specific actions at the start of
    * each namespace prefix mapping.</p>
    *
    * @param prefix The namespace prefix used
    * @param uri The namespace URI used.
    * @exception SAXException Any SAX exception, possibly
    *            wrapping another exception.
    */
	virtual void startPrefixMapping
	(
		const	XMLCh* const	prefix,
		const	XMLCh* const	uri
	) = 0 ;

  /**
    * Receive notification of the end of an namespace prefix mapping.
    *
    * <p>By default, do nothing.  Application writers may override this
    * method in a subclass to take specific actions at the end of
    * each namespace prefix mapping.</p>
    *
    * @param prefix The namespace prefix used
    * @exception SAXException Any SAX exception, possibly
    *            wrapping another exception.
    */
	virtual void endPrefixMapping
	(
		const	XMLCh* const	prefix
	) = 0 ;

  /**
    * Receive notification of a skipped entity
    *
    * <p>The parser will invoke this method once for each entity
	* skipped.  All processors may skip external entities,
	* depending on the values of the features:<br>
	* http://xml.org/sax/features/external-general-entities<br>
	* http://xml.org/sax/features/external-parameter-entities</p>
	*
	* <p>Note: Xerces (specifically) never skips any entities, regardless
	* of the above features.  This function is never called in the
	* Xerces implementation of SAX2.</p>
    *
	* <p>Introduced with SAX2</p>
	*
    * @param name The name of the skipped entity.  If it is a parameter entity,
	* the name will begin with %, and if it is the external DTD subset,
	* it will be the string [dtd].
    * @exception SAXException Any SAX exception, possibly
    *            wrapping another exception.
    */
	virtual void skippedEntity
	(
		const	XMLCh* const	name
	) = 0 ;

    //@}
private :
    /* Unimplemented Constructors and operators */
    /* Copy constructor */
    ContentHandler(const ContentHandler&);
    /** Assignment operator */
    ContentHandler& operator=(const ContentHandler&);
};

XERCES_CPP_NAMESPACE_END

#endif