## Xalan-C++ API Documentation

### The Xalan C++ XSLT Processor Version 1.6

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# XPathConstructionContext.hpp

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    00001 /*
    00002  * The Apache Software License, Version 1.1
    00003  *
    00004  *
    00005  * Copyright (c) 1999-2002 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  * @author <a href="mailto:david_n_bertoni@lotus.com">David N. Bertoni</a>
    00058  */
    00059 #if !defined(XPATHCONSTRUCTIONCONTEXT_HEADER_GUARD_1357924680)
    00060 #define XPATHCONSTRUCTIONCONTEXT_HEADER_GUARD_1357924680
    00061
    00062
    00063
    00064 // Base include file.  Must be first.
    00065 #include <xalanc/XPath/XPathDefinitions.hpp>
    00066
    00067
    00068
    00069 #include <xalanc/XalanDOM/XalanDOMString.hpp>
    00070
    00071
    00072
    00073 XALAN_CPP_NAMESPACE_BEGIN
    00074
    00075
    00076
    00077 //
    00078 // An abstract class which provides support for constructing the internal
    00079 // representation  of a stylesheet.
    00080 //
    00081 class XALAN_XPATH_EXPORT XPathConstructionContext
    00082 {
    00083 public:
    00084
    00085     XPathConstructionContext();
    00086
    00087     virtual
    00088     ~XPathConstructionContext();
    00089
    00090
    00095     virtual void
    00096     reset() = 0;
    00097
    00107     virtual const XalanDOMString&
    00108     getPooledString(const XalanDOMString&   theString) = 0;
    00109
    00120     virtual const XalanDOMString&
    00121     getPooledString(
    00122             const XalanDOMChar*         theString,
    00123             XalanDOMString::size_type   theLength = XalanDOMString::npos) = 0;
    00124
    00130     virtual XalanDOMString&
    00131     getCachedString() = 0;
    00132
    00140     virtual bool
    00141     releaseCachedString(XalanDOMString&     theString) = 0;
    00142
    00143     class GetAndReleaseCachedString
    00144     {
    00145     public:
    00146
    00147         GetAndReleaseCachedString(XPathConstructionContext&     theConstructionContext) :
    00148             m_constructionContext(&theConstructionContext),
    00149             m_string(&theConstructionContext.getCachedString())
    00150         {
    00151         }
    00152
    00153         // Note non-const copy semantics...
    00154         GetAndReleaseCachedString(GetAndReleaseCachedString&    theSource) :
    00155             m_constructionContext(theSource.m_constructionContext),
    00156             m_string(theSource.m_string)
    00157         {
    00158             theSource.m_string = 0;
    00159         }
    00160
    00161         ~GetAndReleaseCachedString()
    00162         {
    00163             if (m_string != 0)
    00164             {
    00165                 m_constructionContext->releaseCachedString(*m_string);
    00166             }
    00167         }
    00168
    00169         XalanDOMString&
    00170         get() const
    00171         {
    00172             assert(m_string != 0);
    00173
    00174             return *m_string;
    00175         }
    00176
    00177         XPathConstructionContext&
    00178         getConstructionContext() const
    00179         {
    00180             return *m_constructionContext;
    00181         }
    00182
    00183     private:
    00184
    00185         // Not implemented...
    00186         GetAndReleaseCachedString&
    00187         operator=(const GetAndReleaseCachedString&);
    00188
    00189
    00190         // Data members...
    00191         XPathConstructionContext*   m_constructionContext;
    00192
    00193         XalanDOMString*             m_string;
    00194     };
    00195
    00196 };
    00197
    00198
    00199
    00200 XALAN_CPP_NAMESPACE_END
    00201
    00202
    00203
    00204 #endif  // XPATHCONSTRUCTIONCONTEXT_HEADER_GUARD_1357924680

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Xalan-C++ XSLT Processor Version 1.6 Copyright © 2000, 2001, 2002, 2003 The Apache Software Foundation. All Rights Reserved.