dombuilder.hpp

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

#ifndef DOMBuilder_HEADER_GUARD_
#define DOMBuilder_HEADER_GUARD_

/*
 * The Apache Software License, Version 1.1
 *
 * Copyright (c) 2002 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
 *    software without prior written permission. For written
 *    permission, please contact apache\@apache.org.
 *
 * 5. Products derived from this software may not be called "Apache",
 *    nor may "Apache" appear in their name, without prior written
 *    permission of the Apache Software Foundation.
 *
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED.  IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
 * 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) 2001, International
 * Business Machines, Inc., http://www.ibm.com .  For more information
 * on the Apache Software Foundation, please see
 * <http://www.apache.org/>.
 */

/*
 * $Id: DOMBuilder.hpp,v 1.11 2003/03/07 19:58:58 tng Exp $
 *
 */


#include <xercesc/util/XercesDefs.hpp>

XERCES_CPP_NAMESPACE_BEGIN


class DOMErrorHandler;
class DOMEntityResolver;
class DOMInputSource;
class DOMBuilderFilter;
class DOMNode;
class DOMDocument;
class Grammar;

/**
 * DOMBuilder provides an API for parsing XML documents and building the
 * corresponding DOM document tree. A DOMBuilder instance is obtained from
 * the DOMImplementationLS interface by invoking its createDOMBuilder method.
 * This implementation also allows the applications to install an error and
 * an entity handler (useful extensions to the DOM specification).
 *
 * @since DOM Level 3
 *
 */
class CDOM_EXPORT DOMBuilder
{
protected :
    // -----------------------------------------------------------------------
    //  Hidden constructors
    // -----------------------------------------------------------------------
    /** @name Hidden constructors */
    //@{    
    DOMBuilder() {};
    //@}

private:    
    // -----------------------------------------------------------------------
    // Unimplemented constructors and operators
    // -----------------------------------------------------------------------
    /** @name Unimplemented constructors and operators */
    //@{
    DOMBuilder(const DOMBuilder &);
    DOMBuilder & operator = (const DOMBuilder &);
    //@}

public:
    // -----------------------------------------------------------------------
    //  All constructors are hidden, just the destructor is available
    // -----------------------------------------------------------------------
    /** @name Destructor */
    //@{
    /**
     * Destructor
     *
     */
    virtual ~DOMBuilder() {};
    //@}

    // -----------------------------------------------------------------------
    //  Class types
    // -----------------------------------------------------------------------
    /** @name Public Constants */
    //@{
    /**
     * Action types for use in parseWithContext.
     *
     * <p> <code>ACTION_REPLACE</code>:
     * Replace the context node with the result of parsing the input source.
     * For this action to work the context node must be an
     * <code>DOMElement</code>, <code>DOMText</code>, <code>DOMCDATASection</code>,
     * <code>DOMComment</code>, <code>DOMProcessingInstruction</code>, or
     * <code>DOMEntityReference</code> node.</p>
     *
     * <p> <code>ACTION_APPEND</code>:
     * Append the result of parsing the input source to the context node. For
     * this action to work, the context node must be an <code>DOMElement</code>.</p>
     *
     * <p> <code>ACTION_INSERT_AFTER</code>:
     * Insert the result of parsing the input source after the context node.
     * For this action to work the context nodes parent must be an
     * <code>DOMElement</code>.</p>
     *
     * <p> <code>ACTION_INSERT_BEFORE</code>:
     * Insert the result of parsing the input source before the context node.
     * For this action to work the context nodes parent must be an
     * <code>DOMElement</code>.</p>
     *
     * @see parseWithContext(...)
     * @since DOM Level 3
     */
    enum ActionType
    {
        ACTION_REPLACE            = 1,
        ACTION_APPEND_AS_CHILDREN = 2,
        ACTION_INSERT_AFTER       = 3,
        ACTION_INSERT_BEFORE      = 4
    };
    //@}

    // -----------------------------------------------------------------------
    //  Virtual DOMBuilder interface
    // -----------------------------------------------------------------------
    /** @name Functions introduced in DOM Level 3 */
    //@{

    // -----------------------------------------------------------------------
    //  Getter methods
    // -----------------------------------------------------------------------

    /**
      * Get a pointer to the error handler
      *
      * This method returns the installed error handler. If no handler
      * has been installed, then it will be a zero pointer.
      *
      * <p><b>"Experimental - subject to change"</b></p>
      *
      * @return The pointer to the installed error handler object.
      * @since DOM Level 3
      */
    virtual DOMErrorHandler* getErrorHandler() = 0;

    /**
      * Get a const pointer to the error handler
      *
      * This method returns the installed error handler.  If no handler
      * has been installed, then it will be a zero pointer.
      *
      * <p><b>"Experimental - subject to change"</b></p>
      *
      * @return A const pointer to the installed error handler object.
      * @since DOM Level 3
      */
    virtual const DOMErrorHandler* getErrorHandler() const = 0;

    /**
      * Get a pointer to the entity resolver
      *
      * This method returns the installed entity resolver.  If no resolver
      * has been installed, then it will be a zero pointer.
      *
      * <p><b>"Experimental - subject to change"</b></p>
      *
      * @return The pointer to the installed entity resolver object.
      * @since DOM Level 3
      */
    virtual DOMEntityResolver* getEntityResolver() = 0;

    /**
      * Get a const pointer to the entity resolver
      *
      * This method returns the installed entity resolver. If no resolver
      * has been installed, then it will be a zero pointer.
      *
      * <p><b>"Experimental - subject to change"</b></p>
      *
      * @return A const pointer to the installed entity resolver object.
      * @since DOM Level 3
      */
    virtual const DOMEntityResolver* getEntityResolver() const = 0;

    /**
      * Get a pointer to the application filter
      *
      * This method returns the installed application filter. If no filter
      * has been installed, then it will be a zero pointer.
      *
      * <p><b>"Experimental - subject to change"</b></p>
      *
      * @return The pointer to the installed application filter.
      * @since DOM Level 3
      */
    virtual DOMBuilderFilter* getFilter() = 0;

    /**
      * Get a const pointer to the application filter
      *
      * This method returns the installed application filter. If no filter
      * has been installed, then it will be a zero pointer.
      *
      * <p><b>"Experimental - subject to change"</b></p>
      *
      * @return A const pointer to the installed application filter
      * @since DOM Level 3
      */
    virtual const DOMBuilderFilter* getFilter() const = 0;

    // -----------------------------------------------------------------------
    //  Setter methods
    // -----------------------------------------------------------------------
    /**
      * Set the error handler
      *
      * This method allows applications to install their own error handler
      * to trap error and warning messages.
      *
      * <i>Any previously set handler is merely dropped, since the parser
      * does not own them.</i>
      *
      * <p><b>"Experimental - subject to change"</b></p>
      *
      * @param handler  A const pointer to the user supplied error
      *                 handler.
      *
      * @see #getErrorHandler
      * @since DOM Level 3
      */
    virtual void setErrorHandler(DOMErrorHandler* const handler) = 0;

    /**
      * Set the entity resolver
      *
      * This method allows applications to install their own entity
      * resolver. By installing an entity resolver, the applications
      * can trap and potentially redirect references to external
      * entities.
      *
      * <i>Any previously set resolver is merely dropped, since the parser
      * does not own them.</i>
      *
      * <p><b>"Experimental - subject to change"</b></p>
      *
      * @param handler  A const pointer to the user supplied entity
      *                 resolver.
      *
      * @see #getEntityResolver
      * @since DOM Level 3
      */
    virtual void setEntityResolver(DOMEntityResolver* const handler) = 0;

    /**
      * Set the application filter
      *
      * When the application provides a filter, the parser will call out to
      * the filter at the completion of the construction of each Element node.
      * The filter implementation can choose to remove the element from the
      * document being constructed (unless the element is the document element)
      * or to terminate the parse early. If the document is being validated
      * when it's loaded the validation happens before the filter is called.
      *
      * <i>Any previously set filter is merely dropped, since the parser
      * does not own them.</i>
      *
      * <p><b>"Experimental - subject to change"</b></p>
      *
      * @param filter  A const pointer to the user supplied application
      *                filter.
      *
      * @see #getFilter
      * @since DOM Level 3
      */
    virtual void setFilter(DOMBuilderFilter* const filter) = 0;

    // -----------------------------------------------------------------------
    //  Feature methods
    // -----------------------------------------------------------------------
    /**
      * Set the state of a feature
      *
      * It is possible for a DOMBuilder to recognize a feature name but to be
      * unable to set its value.
      *
      * <p><b>"Experimental - subject to change"</b></p>
      *
      * See http://xml.apache.org/xerces-c/program-dom.html#DOMBuilderFeatures for
      * the list of supported features.
      *
      * @param name  The feature name.
      * @param state The requested state of the feature (true or false).
      * @exception DOMException
      *     NOT_SUPPORTED_ERR: Raised when the DOMBuilder recognizes the
      *     feature name but cannot set the requested value.
      *     <br>NOT_FOUND_ERR: Raised when the DOMBuilder does not recognize
      *     the feature name.
      *
      * @see #setFeature
      * @see #canSetFeature
      * @since DOM Level 3
      */
    virtual void setFeature(const XMLCh* const name, const bool state) = 0;

    /**
      * Look up the value of a feature.
      *
      * <p><b>"Experimental - subject to change"</b></p>
      *
      * @param name The feature name.
      * @return The current state of the feature (true or false)
      * @exception DOMException
      *     NOT_FOUND_ERR: Raised when the DOMBuilder does not recognize
      *     the feature name.
      *
      * @see #getFeature
      * @see #canSetFeature
      * @since DOM Level 3
      */
    virtual bool getFeature(const XMLCh* const name) const = 0;

    /**