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DStringPool.hpp

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00001 /*
00002  * The Apache Software License, Version 1.1
00003  * 
00004  * Copyright (c) 1999-2000 The Apache Software Foundation.  All rights
00005  * reserved.
00006  * 
00007  * Redistribution and use in source and binary forms, with or without
00008  * modification, are permitted provided that the following conditions
00009  * are met:
00010  * 
00011  * 1. Redistributions of source code must retain the above copyright
00012  *    notice, this list of conditions and the following disclaimer. 
00013  * 
00014  * 2. Redistributions in binary form must reproduce the above copyright
00015  *    notice, this list of conditions and the following disclaimer in
00016  *    the documentation and/or other materials provided with the
00017  *    distribution.
00018  * 
00019  * 3. The end-user documentation included with the redistribution,
00020  *    if any, must include the following acknowledgment:  
00021  *       "This product includes software developed by the
00022  *        Apache Software Foundation (http://www.apache.org/)."
00023  *    Alternately, this acknowledgment may appear in the software itself,
00024  *    if and wherever such third-party acknowledgments normally appear.
00025  * 
00026  * 4. The names "Xerces" and "Apache Software Foundation" must
00027  *    not be used to endorse or promote products derived from this
00028  *    software without prior written permission. For written 
00029  *    permission, please contact apache\@apache.org.
00030  * 
00031  * 5. Products derived from this software may not be called "Apache",
00032  *    nor may "Apache" appear in their name, without prior written
00033  *    permission of the Apache Software Foundation.
00034  * 
00035  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
00036  * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
00037  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
00038  * DISCLAIMED.  IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
00039  * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
00040  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
00041  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
00042  * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
00043  * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
00044  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
00045  * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
00046  * SUCH DAMAGE.
00047  * ====================================================================
00048  * 
00049  * This software consists of voluntary contributions made by many
00050  * individuals on behalf of the Apache Software Foundation, and was
00051  * originally based on software copyright (c) 1999, International
00052  * Business Machines, Inc., http://www.ibm.com .  For more information
00053  * on the Apache Software Foundation, please see
00054  * <http://www.apache.org/>.
00055  */
00056 
00057 
00058 //
00059 // file DStringPool.hpp
00060 //
00061 
00062 //
00063 //  This file is part of the internal implementation of the C++ XML DOM.
00064 //  It should NOT be included or used directly by application programs.
00065 //
00066 //  Applications should include the file <dom/DOM.hpp> for the entire
00067 //  DOM API, or DOM_*.hpp for individual DOM classes, where the class
00068 //  name is substituded for the *.
00069 //
00070 
00071 #ifndef DStringPool_HEADER_GUARD_
00072 #define DStringPool_HEADER_GUARD_
00073 
00074 #include <util/XercesDefs.hpp>
00075 #include <dom/DOMString.hpp>
00076 
00077 struct DStringPoolEntry;
00078 
00079 //
00080 // DStringPool is a hash table of DOMStrings.
00081 //  Each DOM Document maintains a DStringPool containing a DOMString
00082 //  for each Element tag name and Attribute Name that has been added
00083 //  to the document.  When creating additional elements or attributes,
00084 //  if the name has been seen before, the already existing string
00085 //  will be reused.
00086 //
00087 class DStringPool
00088 {
00089 public:
00090     DStringPool(int  hashTableSize);  
00091     ~DStringPool();
00092 
00093     const DOMString &getPooledString(const DOMString &in);
00094     const DOMString &getPooledString(const XMLCh *in);
00095 
00096     static const DOMString &getStaticString(const char *in, DOMString **loc);
00097 
00098 
00099 private:
00100     DStringPool(const DStringPool &other);      // Copy constructor and assignment
00101     void operator = (const DStringPool &other); //  of DStringPool are not supported.
00102 
00103     DStringPoolEntry **fHashTable;
00104     int              fHashTableSize;
00105 };
00106 
00107 #endif


Copyright © 2000 The Apache Software Foundation. All Rights Reserved.