1 /* 2 * Copyright (c) 1999-2000, Eric Moon. 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions, and the following disclaimer. 11 * 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions, and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * 3. The name of the author may not be used to endorse or promote products 17 * derived from this software without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR "AS IS" AND ANY EXPRESS OR 20 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 21 * OF TITLE, NON-INFRINGEMENT, MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY 23 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 24 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 25 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 26 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR 27 * TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 28 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 29 */ 30 31 32 // XMLElementMapping.h 33 // * PURPOSE 34 // A simple class (template implementing a non-template 35 // base interface) to encapsulate the operation: 36 // "make an object for this XML element." 37 // 38 // * HISTORY 39 // e.moon 04oct99 Begun. 40 41 #ifndef __XMLElementMapping_H__ 42 #define __XMLElementMapping_H__ 43 44 #include <functional> 45 #include <String.h> 46 47 #include "cortex_defs.h" 48 __BEGIN_CORTEX_NAMESPACE 49 50 class IPersistent; 51 52 // The base class: 53 54 class XMLElementMapping { 55 public: // *** data 56 const BString element; 57 58 public: // *** interface 59 virtual ~XMLElementMapping() {} 60 XMLElementMapping( 61 const char* _element) : 62 element(_element) {} 63 64 virtual IPersistent* create() const =0; 65 }; 66 67 // The template: 68 69 template <class T> 70 class Mapping : 71 public XMLElementMapping { 72 public: 73 virtual ~Mapping() {} 74 Mapping( 75 const char* element) : 76 XMLElementMapping(element) {} 77 78 IPersistent* create() const { 79 return new T(); 80 } 81 }; 82 83 // compare pointers to Mappings by element name 84 struct _mapping_ptr_less : public std::binary_function<XMLElementMapping*,XMLElementMapping*,bool> { 85 public: 86 bool operator()(const XMLElementMapping* a, const XMLElementMapping* b) const { 87 return a->element < b->element; 88 } 89 }; 90 91 92 __END_CORTEX_NAMESPACE 93 #endif /*__XMLElementMapping_H__*/ 94