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# StDOMNode.hpp

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    00001 #ifndef DOMSPtr_HEADER_GUARD_
    00002 #define DOMSPtr_HEADER_GUARD_
    00003
    00004 /*
    00005  * The Apache Software License, Version 1.1
    00006  *
    00007  * Copyright (c) 2001-2003 The Apache Software Foundation.  All rights
    00008  * reserved.
    00009  *
    00010  * Redistribution and use in source and binary forms, with or without
    00011  * modification, are permitted provided that the following conditions
    00012  * are met:
    00013  *
    00014  * 1. Redistributions of source code must retain the above copyright
    00015  *    notice, this list of conditions and the following disclaimer.
    00016  *
    00017  * 2. Redistributions in binary form must reproduce the above copyright
    00018  *    notice, this list of conditions and the following disclaimer in
    00019  *    the documentation and/or other materials provided with the
    00020  *    distribution.
    00021  *
    00022  * 3. The end-user documentation included with the redistribution,
    00023  *    if any, must include the following acknowledgment:
    00024  *       "This product includes software developed by the
    00025  *        Apache Software Foundation (http://www.apache.org/)."
    00026  *    Alternately, this acknowledgment may appear in the software itself,
    00027  *    if and wherever such third-party acknowledgments normally appear.
    00028  *
    00029  * 4. The names "Xerces" and "Apache Software Foundation" must
    00030  *    not be used to endorse or promote products derived from this
    00031  *    software without prior written permission. For written
    00032  *    permission, please contact apache\@apache.org.
    00033  *
    00034  * 5. Products derived from this software may not be called "Apache",
    00035  *    nor may "Apache" appear in their name, without prior written
    00036  *    permission of the Apache Software Foundation.
    00037  *
    00038  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
    00039  * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
    00040  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
    00041  * DISCLAIMED.  IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
    00042  * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
    00043  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
    00044  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
    00045  * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
    00046  * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
    00047  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
    00048  * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
    00049  * SUCH DAMAGE.
    00050  * ====================================================================
    00051  *
    00052  * This software consists of voluntary contributions made by many
    00053  * individuals on behalf of the Apache Software Foundation, and was
    00054  * originally based on software copyright (c) 2001, International
    00055  * Business Machines, Inc., http://www.ibm.com .  For more information
    00056  * on the Apache Software Foundation, please see
    00057  * <http://www.apache.org/>.
    00058  */
    00059
    00060 /*
    00061  * $Id: StDOMNode.hpp,v 1.2 2003/05/06 13:48:34 neilg Exp $
    00062  */
    00063
    00064 #include <xercesc/dom/DOMNode.hpp>
    00065 #include <xercesc/dom/DOMAttr.hpp>
    00066 #include <xercesc/dom/DOMElement.hpp>
    00067
    00068 XERCES_CPP_NAMESPACE_BEGIN
    00069
    00070 /* This class is a smart pointer implementation over DOMNode interface and
    00071 ** classes derived from it. It takes care of reference counting automatically.
    00072 ** Reference counting is optional so use of this class is experimental.
    00073 */
    00074 template <class T> class StDOMNode {
    00075     T* m_node;
    00076
    00077     static inline void INCREFCOUNT(T *x) { if (x != (T*)0) x->incRefCount(); }
    00078     static inline void DECREFCOUNT(T *x) { if (x != (T*)0) x->decRefCount(); }
    00079
    00080 public:
    00081     inline StDOMNode(T* node = (T*)0) : m_node(node) { INCREFCOUNT(m_node); }
    00082     inline StDOMNode(const StDOMNode& stNode) : m_node(stNode.m_node) { INCREFCOUNT(m_node); }
    00083     inline ~StDOMNode() { DECREFCOUNT(m_node); }
    00084
    00085     inline T* operator= (T *node)
    00086     {
    00087         if (m_node != node) {
    00088             DECREFCOUNT(m_node);
    00089             m_node = node;
    00090             INCREFCOUNT(m_node);
    00091         }
    00092         return (m_node);
    00093     }
    00094
    00095     inline bool operator!= (T* node) const { return (m_node != node); }
    00096     inline bool operator== (T* node) const { return (m_node == node); }
    00097
    00098     inline T& operator* () { return (*m_node); }
    00099     inline const T& operator* () const { return (*m_node); }
    00100     inline T* operator-> () const { return (m_node); }
    00101     inline operator T*() const { return (m_node); }
    00102     inline void ClearNode() { operator=((T*)(0)); }
    00103 };
    00104
    00105 #if defined(XML_DOMREFCOUNT_EXPERIMENTAL)
    00106     typedef StDOMNode<DOMNode> DOMNodeSPtr;
    00107 #else
    00108     typedef DOMNode* DOMNodeSPtr;
    00109 #endif
    00110
    00111 /* StDOMNode is a smart pointer implementation over DOMNode interface and
    00112 ** classes derived from it. It takes care of reference counting automatically.
    00113 ** Reference counting is optional so use of this class is experimental.
    00114 */
    00115 #if defined(XML_DOMREFCOUNT_EXPERIMENTAL)
    00116     typedef StDOMNode<DOMAttr> DOMAttrSPtr;
    00117 #else
    00118     typedef DOMAttr* DOMAttrSPtr;
    00119 #endif
    00120
    00121 /* StDOMNode is a smart pointer implementation over DOMNode interface and
    00122 ** classes derived from it. It takes care of reference counting automatically.
    00123 ** Reference counting is optional so use of this class is experimental.
    00124 */
    00125 #if defined(XML_DOMREFCOUNT_EXPERIMENTAL)
    00126     typedef StDOMNode<DOMElement> DOMElementSPtr;
    00127 #else
    00128     typedef DOMElement* DOMElementSPtr;
    00129 #endif
    00130
    00131 XERCES_CPP_NAMESPACE_END
    00132
    00133 #endif
    00134

Copyright © 2004 The Apache Software Foundation. All Rights Reserved.