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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>
- </td>
- </tr>
- </table>
- <hr>
- The purpose of this example is to 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>
- <hr>
- <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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