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XResultTreeFrag.hpp

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00001 /*
00002  * The Apache Software License, Version 1.1
00003  *
00004  *
00005  * Copyright (c) 1999 The Apache Software Foundation.  All rights 
00006  * reserved.
00007  *
00008  * Redistribution and use in source and binary forms, with or without
00009  * modification, are permitted provided that the following conditions
00010  * are met:
00011  *
00012  * 1. Redistributions of source code must retain the above copyright
00013  *    notice, this list of conditions and the following disclaimer. 
00014  *
00015  * 2. Redistributions in binary form must reproduce the above copyright
00016  *    notice, this list of conditions and the following disclaimer in
00017  *    the documentation and/or other materials provided with the
00018  *    distribution.
00019  *
00020  * 3. The end-user documentation included with the redistribution,
00021  *    if any, must include the following acknowledgment:  
00022  *       "This product includes software developed by the
00023  *        Apache Software Foundation (http://www.apache.org/)."
00024  *    Alternately, this acknowledgment may appear in the software itself,
00025  *    if and wherever such third-party acknowledgments normally appear.
00026  *
00027  * 4. The names "Xalan" and "Apache Software Foundation" must
00028  *    not be used to endorse or promote products derived from this
00029  *    software without prior written permission. For written 
00030  *    permission, please contact apache@apache.org.
00031  *
00032  * 5. Products derived from this software may not be called "Apache",
00033  *    nor may "Apache" appear in their name, without prior written
00034  *    permission of the Apache Software Foundation.
00035  *
00036  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
00037  * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
00038  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
00039  * DISCLAIMED.  IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
00040  * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
00041  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
00042  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
00043  * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
00044  * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
00045  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
00046  * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
00047  * SUCH DAMAGE.
00048  * ====================================================================
00049  *
00050  * This software consists of voluntary contributions made by many
00051  * individuals on behalf of the Apache Software Foundation and was
00052  * originally based on software copyright (c) 1999, International
00053  * Business Machines, Inc., http://www.ibm.com.  For more
00054  * information on the Apache Software Foundation, please see
00055  * <http://www.apache.org/>.
00056  */
00057 #if !defined(XRESULTTREEFRAG_HEADER_GUARD_1357924680)
00058 #define XRESULTTREEFRAG_HEADER_GUARD_1357924680
00059 
00060 
00061 
00062 // Base header file.  Must be first.
00063 #include <XPath/XPathDefinitions.hpp>
00064 
00065 
00066 
00067 #include <XalanDOM/XalanDOMString.hpp>
00068 
00069 
00070 
00071 #if defined(XALAN_AUTO_PTR_REQUIRES_DEFINITION)
00072 #include <XPath/ResultTreeFragBase.hpp>
00073 #endif
00074 
00075 
00076 
00077 #include <Include/XalanAutoPtr.hpp>
00078 
00079 
00080 
00081 // Base class header file.
00082 #include <XPath/NodeRefListBase.hpp>
00083 #include <XPath/XObject.hpp>
00084 
00085 
00086 
00087 #include <XPath/XPathExecutionContext.hpp>
00088 
00089 
00090 
00091 class ResultTreeFragBase;
00092 class XResultTreeFrag;
00093 
00094 
00095 class XALAN_XPATH_EXPORT XResultTreeFrag : public XObject
00096 {
00097 public:
00098 
00099     typedef XPathExecutionContext::BorrowReturnResultTreeFrag   BorrowReturnResultTreeFrag;
00100 
00101 
00107     XResultTreeFrag(BorrowReturnResultTreeFrag&     val);
00108 
00115     XResultTreeFrag(const XResultTreeFrag&  source,
00116             bool                            deepClone = false);
00117 
00118     virtual
00119     ~XResultTreeFrag();
00120 
00121 
00122     // These methods are inherited from XObject ...
00123 
00124 #if defined(XALAN_NO_COVARIANT_RETURN_TYPE)
00125     virtual XObject*
00126 #else
00127     virtual XResultTreeFrag*
00128 #endif
00129     clone(void*     theAddress = 0) const;
00130 
00131     virtual XalanDOMString
00132     getTypeString() const;
00133   
00134     virtual double
00135     num() const;
00136 
00137     virtual bool
00138     boolean() const;
00139 
00140     virtual const XalanDOMString&
00141     str() const;
00142 
00143     virtual const ResultTreeFragBase&
00144     rtree(XPathExecutionContext&    executionContext) const;
00145 
00146     virtual const ResultTreeFragBase&
00147     rtree() const;
00148 
00149     virtual const NodeRefListBase&
00150     nodeset() const;
00151 
00152     virtual void
00153     ProcessXObjectTypeCallback(XObjectTypeCallback&     theCallbackObject);
00154 
00155     virtual void
00156     ProcessXObjectTypeCallback(XObjectTypeCallback&     theCallbackObject) const;
00157 
00158     // New member functions for node list compatibility...
00159     XalanNode*
00160     item(unsigned int   index) const;
00161 
00162     unsigned int
00163     getLength() const;
00164 
00165     unsigned int
00166     indexOf(const XalanNode*    theNode) const;
00167 
00168 private:
00169 
00170     class  NodeRefListBaseProxy : public NodeRefListBase
00171     {
00172     public:
00173 
00174         NodeRefListBaseProxy(const XResultTreeFrag&     theXResultTreeFrag);
00175 
00176         virtual
00177         ~NodeRefListBaseProxy();
00178 
00179         virtual XalanNode*
00180         item(unsigned int   index) const;
00181 
00182         virtual unsigned int
00183         getLength() const;
00184 
00185         virtual unsigned int
00186         indexOf(const XalanNode*    theNode) const;
00187 
00188     private:
00189 
00190         // Not implemented...
00191         NodeRefListBaseProxy(const NodeRefListBaseProxy&);
00192 
00193         const XResultTreeFrag&  m_xresultTreeFrag;      
00194     };
00195 
00196     // Data members...
00197     BorrowReturnResultTreeFrag      m_value;    
00198 
00199     mutable XalanDOMString          m_cachedStringValue;
00200 
00201     mutable double                  m_cachedNumberValue;
00202 
00203     const NodeRefListBaseProxy      m_nodeRefListBaseProxy;
00204 };
00205 
00206 
00207 
00208 #endif  // XRESULTTREEFRAG_HEADER_GUARD_1357924680

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