1<!doctype HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> 2<html> 3<!-- 4(C) Copyright 2002-10 Robert Ramey - http://www.rrsd.com . 5Use, modification and distribution is subject to the Boost Software 6License, Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at 7http://www.boost.org/LICENSE_1_0.txt) 8--> 9<head> 10<meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> 11<link rel="stylesheet" type="text/css" href="../../../boost.css"> 12<link rel="stylesheet" type="text/css" href="style.css"> 13<title>Serialization - Derivation from an Existing Archive</title> 14</head> 15<body link="#0000ff" vlink="#800080"> 16<table border="0" cellpadding="7" cellspacing="0" width="100%" summary="header"> 17 <tr> 18 <td valign="top" width="300"> 19 <h3><a href="../../../index.htm"><img height="86" width="277" alt="C++ Boost" src="../../../boost.png" border="0"></a></h3> 20 </td> 21 <td valign="top"> 22 <h1 align="center">Serialization</h1> 23 <h2 align="center">A Simple Logging Archive Class</h2> 24 </td> 25 </tr> 26</table> 27<hr> 28The purpose of this example is to help clarify the usage of the 29<a href="archives.html"><strong>Archive Concept</strong></a> 30so that one can implement his own archive classes. 31<a href="../example/simple_log_archive.hpp" target="simple_archive_hpp"> 32<code>simple_log_archive.hpp</code></a> implements a simple but useful 33archive class. This class can be used to send any serializable types 34on an output text stream in a readable format. Usage of this facility 35is trivially easy: 36 37<pre><code> 38#include "simple_log_archive.hpp" 39... 40// display the complete schedule 41simple_log_archive log(std::cout); 42log << schedule; 43</code></pre> 44 45and it produces the following output 46 47<pre><code> 48schedule 49 count 6 50 item 51 first 52 driver bob 53 hour 6 54 minute 24 55 second -> 56 stops 57 count 3 58 item -> 59 latitude 60 degrees 34 61 minutes 135 62 seconds 52.56 63 longitude 64 degrees 134 65 minutes 22 66 seconds 78.3 67... 68</code></pre> 69 70The complete example is <a href="../example/demo_simple_log.cpp" target="demo_simple_log_cpp"> 71<code>demo_simple_log.cpp</code></a>. Look at 72<a href="archive_reference.html#trivial">Trivial Archive</a> to get a 73better understanding of how this works. 74 75Also, note the following: 76<ul> 77 <li>Only 160 lines of code. 78 <li>Header only - linking with the serialization library not required. 79 <li>Displays ALL <a href="serialization.html"><strong>Serializable</strong></a> types. 80 <li>Lacks some features. 81 <ul> 82 <li>it will not display the data from the derived type given the pointer to a 83 polymorphic base class. That is, only displays the information of the base class. 84 To add that see the next example. 85 <li>doesn't display information serialized as binary data 86 </ul> 87</ul> 88 89<hr> 90<p><i>© Copyright <a href="http://www.rrsd.com">Robert Ramey</a> 2002-2010. 91Distributed under the Boost Software License, Version 1.0. (See 92accompanying file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt) 93</i></p> 94</body> 95</html> 96
