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<title>Serialization - Derivation from an Existing Archive</title>
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<h3><a href="../../../index.htm"><img height="86" width="277" alt="C++ Boost" src="../../../boost.png" border="0"></a></h3>
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<h1 align="center">Serialization</h1>
<h2 align="center">A Simple Logging Archive Class</h2>
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The purpose of this example help clarify the usage of the
<a href="archives.html"><strong>Archive Concept</strong></a>
so that one can implement his own archive classes.
<a href="../example/simple_log_archive.hpp" target="simple_archive_hpp">
<code>simple_log_archive.hpp</code></a> implements a simple but useful
archive class. This class can be used to send any serializable types
on an output text stream in a readable format. Usage of this facility
is trivially easy:
<pre><code>
#include "simple_log_archive.hpp"
...
// display the complete schedule
simple_log_archive log(std::cout);
log << schedule;
</code></pre>
and it produces the following output
<pre><code>
schedule
count 6
item
first
driver bob
hour 6
minute 24
second ->
stops
count 3
item ->
latitude
degrees 34
minutes 135
seconds 52.56
longitude
degrees 134
minutes 22
seconds 78.3
...
</code></pre>
The complete example is <a href="../example/demo_simple_log.cpp" target="demo_simple_log_cpp">
<code>demo_simple_log.cpp</code></a>. Look at
<a href="archive_reference.html#trivial">Trivial Archive</a> to get a
better understanding of how this works.
Also, note the following:
<ul>
<li>Only 160 lines of code.
<li>Header only - linking with the serialization library not required.
<li>Displays ALL <a href="serialization.html"><strong>Serializable</strong></a> types.
<li>Lacks some features.
<ul>
<li>it will not display the data from the derived type given the pointer to a
polymorphic base class. That is, only displays the information of the base class.
To add that see the next example.
<li>doesn't display information serialized as binary data
</ul>
</ul>
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<p><i>© Copyright <a href="http://www.rrsd.com">Robert Ramey</a> 2002-2010.
Distributed under the Boost Software License, Version 1.0. (See
accompanying file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
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