HandlerBase.hpp
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- /*
- * The Apache Software License, Version 1.1
- *
- * Copyright (c) 1999-2000 The Apache Software Foundation. All rights
- * reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in
- * the documentation and/or other materials provided with the
- * distribution.
- *
- * 3. The end-user documentation included with the redistribution,
- * if any, must include the following acknowledgment:
- * "This product includes software developed by the
- * Apache Software Foundation (http://www.apache.org/)."
- * Alternately, this acknowledgment may appear in the software itself,
- * if and wherever such third-party acknowledgments normally appear.
- *
- * 4. The names "Xerces" and "Apache Software Foundation" must
- * not be used to endorse or promote products derived from this
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- *
- * 5. Products derived from this software may not be called "Apache",
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- * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
- * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- * ====================================================================
- *
- * This software consists of voluntary contributions made by many
- * individuals on behalf of the Apache Software Foundation, and was
- * originally based on software copyright (c) 1999, International
- * Business Machines, Inc., http://www.ibm.com . For more information
- * on the Apache Software Foundation, please see
- * <http://www.apache.org/>.
- */
- /*
- * $Log: HandlerBase.hpp,v $
- * Revision 1.5 2002/11/04 14:56:25 tng
- * C++ Namespace Support.
- *
- * Revision 1.4 2002/07/16 18:15:00 tng
- * [Bug 6070] warning unused variable in HandlerBase.hpp
- *
- * Revision 1.3 2002/06/06 20:39:16 tng
- * Document Fix: document that the returned object from resolveEntity is owned by the parser
- *
- * Revision 1.2 2002/02/20 18:17:01 tng
- * [Bug 5977] Warnings on generating apiDocs.
- *
- * Revision 1.1.1.1 2002/02/01 22:22:08 peiyongz
- * sane_include
- *
- * Revision 1.6 2000/03/02 19:54:35 roddey
- * This checkin includes many changes done while waiting for the
- * 1.1.0 code to be finished. I can't list them all here, but a list is
- * available elsewhere.
- *
- * Revision 1.5 2000/02/24 20:12:55 abagchi
- * Swat for removing Log from API docs
- *
- * Revision 1.4 2000/02/12 03:31:55 rahulj
- * Removed duplicate CVS Log entries.
- *
- * Revision 1.3 2000/02/12 01:27:19 aruna1
- * Documentation updated
- *
- * Revision 1.2 2000/02/06 07:47:57 rahulj
- * Year 2K copyright swat.
- *
- * Revision 1.1.1.1 1999/11/09 01:07:45 twl
- * Initial checkin
- *
- * Revision 1.2 1999/11/08 20:45:00 rahul
- * Swat for adding in Product name and CVS comment log variable.
- *
- */
- #ifndef HANDLERBASE_HPP
- #define HANDLERBASE_HPP
- #include <xercesc/sax/DocumentHandler.hpp>
- #include <xercesc/sax/DTDHandler.hpp>
- #include <xercesc/sax/EntityResolver.hpp>
- #include <xercesc/sax/ErrorHandler.hpp>
- #include <xercesc/sax/SAXParseException.hpp>
- XERCES_CPP_NAMESPACE_BEGIN
- class Locator;
- class AttributeList;
- /**
- * Default base class for handlers.
- *
- * <p>This class implements the default behaviour for four SAX
- * interfaces: EntityResolver, DTDHandler, DocumentHandler,
- * and ErrorHandler.</p>
- *
- * <p>Application writers can extend this class when they need to
- * implement only part of an interface; parser writers can
- * instantiate this class to provide default handlers when the
- * application has not supplied its own.</p>
- *
- * <p>Note that the use of this class is optional.</p>
- *
- * @see EntityResolver#EntityResolver
- * @see DTDHandler#DTDHandler
- * @see DocumentHandler#DocumentHandler
- * @see ErrorHandler#ErrorHandler
- */
- class SAX_EXPORT HandlerBase :
- public EntityResolver, public DTDHandler, public DocumentHandler
- , public ErrorHandler
- {
- public:
- /** @name Default handlers for the DocumentHandler interface */
- //@{
- /**
- * Receive notification of character data inside an element.
- *
- * <p>By default, do nothing. Application writers may override this
- * method to take specific actions for each chunk of character data
- * (such as adding the data to a node or buffer, or printing it to
- * a file).</p>
- *
- * @param chars The characters.
- * @param length The number of characters to use from the
- * character array.
- * @exception SAXException Any SAX exception, possibly
- * wrapping another exception.
- * @see DocumentHandler#characters
- */
- virtual void characters
- (
- const XMLCh* const chars
- , const unsigned int length
- );
- /**
- * Receive notification of the end of the document.
- *
- * <p>By default, do nothing. Application writers may override this
- * method in a subclass to take specific actions at the beginning
- * of a document (such as finalising a tree or closing an output
- * file).</p>
- *
- * @exception SAXException Any SAX exception, possibly
- * wrapping another exception.
- * @see DocumentHandler#endDocument
- */
- virtual void endDocument();
- /**
- * Receive notification of the end of an element.
- *
- * <p>By default, do nothing. Application writers may override this
- * method in a subclass to take specific actions at the end of
- * each element (such as finalising a tree node or writing
- * output to a file).</p>
- *
- * @param name The element type name.
- * @exception SAXException Any SAX exception, possibly
- * wrapping another exception.
- * @see DocumentHandler#endElement
- */
- virtual void endElement(const XMLCh* const name);
- /**
- * Receive notification of ignorable whitespace in element content.
- *
- * <p>By default, do nothing. Application writers may override this
- * method to take specific actions for each chunk of ignorable
- * whitespace (such as adding data to a node or buffer, or printing
- * it to a file).</p>
- *
- * @param chars The whitespace characters.
- * @param length The number of characters to use from the
- * character array.
- * @exception SAXException Any SAX exception, possibly
- * wrapping another exception.
- * @see DocumentHandler#ignorableWhitespace
- */
- virtual void ignorableWhitespace
- (
- const XMLCh* const chars
- , const unsigned int length
- );
- /**
- * Receive notification of a processing instruction.
- *
- * <p>By default, do nothing. Application writers may override this
- * method in a subclass to take specific actions for each
- * processing instruction, such as setting status variables or
- * invoking other methods.</p>
- *
- * @param target The processing instruction target.
- * @param data The processing instruction data, or null if
- * none is supplied.
- * @exception SAXException Any SAX exception, possibly
- * wrapping another exception.
- * @see DocumentHandler#processingInstruction
- */
- virtual void processingInstruction
- (
- const XMLCh* const target
- , const XMLCh* const data
- );
- /**
- * Reset the Docuemnt object on its reuse
- *
- * @see DocumentHandler#resetDocument
- */
- virtual void resetDocument();
- //@}
- /** @name Default implementation of DocumentHandler interface */
- //@{
- /**
- * Receive a Locator object for document events.
- *
- * <p>By default, do nothing. Application writers may override this
- * method in a subclass if they wish to store the locator for use
- * with other document events.</p>
- *
- * @param locator A locator for all SAX document events.
- * @see DocumentHandler#setDocumentLocator
- * @see Locator
- */
- virtual void setDocumentLocator(const Locator* const locator);
- /**
- * Receive notification of the beginning of the document.
- *
- * <p>By default, do nothing. Application writers may override this
- * method in a subclass to take specific actions at the beginning
- * of a document (such as allocating the root node of a tree or
- * creating an output file).</p>
- *
- * @exception SAXException Any SAX exception, possibly
- * wrapping another exception.
- * @see DocumentHandler#startDocument
- */
- virtual void startDocument();
- /**
- * Receive notification of the start of an element.
- *
- * <p>By default, do nothing. Application writers may override this
- * method in a subclass to take specific actions at the start of
- * each element (such as allocating a new tree node or writing
- * output to a file).</p>
- *
- * @param name The element type name.
- * @param attributes The specified or defaulted attributes.
- * @exception SAXException Any SAX exception, possibly
- * wrapping another exception.
- * @see DocumentHandler#startElement
- */
- virtual void startElement
- (
- const XMLCh* const name
- , AttributeList& attributes
- );
- //@}
- /** @name Default implementation of the EntityResolver interface. */
- //@{
- /**
- * Resolve an external entity.
- *
- * <p>Always return null, so that the parser will use the system
- * identifier provided in the XML document. This method implements
- * the SAX default behaviour: application writers can override it
- * in a subclass to do special translations such as catalog lookups
- * or URI redirection.</p>
- *
- * @param publicId The public identifer, or null if none is
- * available.
- * @param systemId The system identifier provided in the XML
- * document.
- * @return The new input source, or null to require the
- * default behaviour.
- * The returned InputSource is owned by the parser which is
- * responsible to clean up the memory.
- * @exception SAXException Any SAX exception, possibly
- * wrapping another exception.
- * @see EntityResolver#resolveEntity
- */
- virtual InputSource* resolveEntity
- (
- const XMLCh* const publicId
- , const XMLCh* const systemId
- );
- //@}
- /** @name Default implementation of the ErrorHandler interface */
- //@{
- /**
- * Receive notification of a recoverable parser error.
- *
- * <p>The default implementation does nothing. Application writers
- * may override this method in a subclass to take specific actions
- * for each error, such as inserting the message in a log file or
- * printing it to the console.</p>
- *
- * @param exception The warning information encoded as an exception.
- * @exception SAXException Any SAX exception, possibly
- * wrapping another exception.
- * @see ErrorHandler#warning
- * @see SAXParseException#SAXParseException
- */
- virtual void error(const SAXParseException& exception);
- /**
- * Report a fatal XML parsing error.
- *
- * <p>The default implementation throws a SAXParseException.
- * Application writers may override this method in a subclass if
- * they need to take specific actions for each fatal error (such as
- * collecting all of the errors into a single report): in any case,
- * the application must stop all regular processing when this
- * method is invoked, since the document is no longer reliable, and
- * the parser may no longer report parsing events.</p>
- *
- * @param exception The error information encoded as an exception.
- * @exception SAXException Any SAX exception, possibly
- * wrapping another exception.
- * @see ErrorHandler#fatalError
- * @see SAXParseException#SAXParseException
- */
- virtual void fatalError(const SAXParseException& exception);
- /**
- * Receive notification of a parser warning.
- *
- * <p>The default implementation does nothing. Application writers
- * may override this method in a subclass to take specific actions
- * for each warning, such as inserting the message in a log file or
- * printing it to the console.</p>
- *
- * @param exception The warning information encoded as an exception.
- * @exception SAXException Any SAX exception, possibly
- * wrapping another exception.
- * @see ErrorHandler#warning
- * @see SAXParseException#SAXParseException
- */
- virtual void warning(const SAXParseException& exception);
- /**
- * Reset the Error handler object on its reuse
- *
- * @see ErrorHandler#resetErrors
- */
- virtual void resetErrors();
- //@}
- /** @name Default implementation of DTDHandler interface. */
- //@{
- /**
- * Receive notification of a notation declaration.
- *
- * <p>By default, do nothing. Application writers may override this
- * method in a subclass if they wish to keep track of the notations
- * declared in a document.</p>
- *
- * @param name The notation name.
- * @param publicId The notation public identifier, or null if not
- * available.
- * @param systemId The notation system identifier.
- * @see DTDHandler#notationDecl
- */
- virtual void notationDecl
- (
- const XMLCh* const name
- , const XMLCh* const publicId
- , const XMLCh* const systemId
- );
- /**
- * Reset the DTD object on its reuse
- *
- * @see DTDHandler#resetDocType
- */
- virtual void resetDocType();
- /**
- * Receive notification of an unparsed entity declaration.
- *
- * <p>By default, do nothing. Application writers may override this
- * method in a subclass to keep track of the unparsed entities
- * declared in a document.</p>
- *
- * @param name The entity name.
- * @param publicId The entity public identifier, or null if not
- * available.
- * @param systemId The entity system identifier.
- * @param notationName The name of the associated notation.
- * @see DTDHandler#unparsedEntityDecl
- */
- virtual void unparsedEntityDecl
- (
- const XMLCh* const name
- , const XMLCh* const publicId
- , const XMLCh* const systemId
- , const XMLCh* const notationName
- );
- //@}
- };
- // ---------------------------------------------------------------------------
- // HandlerBase: Inline default implementations
- // ---------------------------------------------------------------------------
- inline void HandlerBase::characters(const XMLCh* const
- , const unsigned int)
- {
- }
- inline void HandlerBase::endDocument()
- {
- }
- inline void HandlerBase::endElement(const XMLCh* const)
- {
- }
- inline void HandlerBase::error(const SAXParseException&)
- {
- }
- inline void HandlerBase::fatalError(const SAXParseException& exception)
- {
- throw exception;
- }
- inline void
- HandlerBase::ignorableWhitespace( const XMLCh* const
- , const unsigned int)
- {
- }
- inline void HandlerBase::notationDecl( const XMLCh* const
- , const XMLCh* const
- , const XMLCh* const)
- {
- }
- inline void
- HandlerBase::processingInstruction( const XMLCh* const
- , const XMLCh* const)
- {
- }
- inline void HandlerBase::resetErrors()
- {
- }
- inline void HandlerBase::resetDocument()
- {
- }
- inline void HandlerBase::resetDocType()
- {
- }
- inline InputSource*
- HandlerBase::resolveEntity( const XMLCh* const
- , const XMLCh* const)
- {
- return 0;
- }
- inline void
- HandlerBase::unparsedEntityDecl(const XMLCh* const
- , const XMLCh* const
- , const XMLCh* const
- , const XMLCh* const)
- {
- }
- inline void HandlerBase::setDocumentLocator(const Locator* const)
- {
- }
- inline void HandlerBase::startDocument()
- {
- }
- inline void
- HandlerBase::startElement( const XMLCh* const
- , AttributeList&)
- {
- }
- inline void HandlerBase::warning(const SAXParseException&)
- {
- }
- XERCES_CPP_NAMESPACE_END
- #endif