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
50class IPersistent;
51
52// The base class:
53
54class XMLElementMapping {
55public:													// *** data
56	const BString									element;
57
58public:													// *** 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
69template <class T>
70class Mapping :
71	public	XMLElementMapping {
72public:
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
84struct _mapping_ptr_less {
85public:
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