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<html>
<head>
<META http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>Avalon Developer Design Documentation</title>
</head>
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<hr size="1" noshade="">
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</table>
<table border="0" cellpadding="0" cellspacing="0" width="100%">
<tr>
<td valign="top" width="1%"></td><td nowrap="1" valign="top" width="14%">
<br>
<font face="arial,helvetica,sanserif">
<br>
<br>
<a href="../"><font size="+1" color="#F3510C">Jakarta main</font></a>
<br>
<br>
<a href="../index.html"><font size="+1" color="#F3510C">Avalon main</font></a>
<br>
<br>
<font size="+1" color="#000000">About</font>
<br>
<font size="-1">
<ul>
<li>
<a href="index.html"><font size="-1">Overview</font></a>
</li>
<li>
<a href="changes.html"><font size="-1">Changes</font></a>
</li>
<li>
<a href="http://jakarta.apache.org/builds/jakarta-avalon/release/framework"><font size="-1">Download</font></a>
</li>
<li>
<a href="http://jakarta.apache.org/avalon/api/index.html"><font size="-1">API Docs</font></a>
</li>
<li>
<a href="diagrams/index.html"><font size="-1">Diagrams Docs</font></a>
</li>
</ul>
</font>
<br>
<br>
<font size="+1" color="#000000">Patterns and Design</font>
<br>
<font size="-1">
<ul>
<li>
<a href="patterns.html"><font size="-1">Patterns</font></a>
</li>
<li>
<a href="reuse-standards.html"><font size="-1">Reuse Standards</font></a>
</li>
<li>
<a href="inversion-of-control.html"><font size="-1">Inversion of Control</font></a>
</li>
<li>
<a href="separation-of-concerns.html"><font size="-1">Separation of Concerns</font></a>
</li>
<li>
<a href="security.html"><font size="-1">Security</font></a>
</li>
</ul>
</font>
<br>
<br>
<font size="+1" color="#000000">The API</font>
<br>
<font size="-1">
<ul>
<li>
<a href="what-is-a-component.html"><font size="-1">What is a Component?</font></a>
</li>
<li>
<a href="what-is-a-composer.html"><font size="-1">What is a Composer?</font></a>
</li>
<li>
<a href="lifecycle.html"><font size="-1">The Component Lifecycle</font></a>
</li>
<li>
<a href="designing-a-component.html"><font size="-1">Designing a Component</font></a>
</li>
</ul>
</font>
<br>
<br>
</font></td><td align="left" valign="top" width="*">
<title>Avalon Developer Design Documentation</title>
<center>
<table width="80%">
<tr>
<td bgcolor="#F3DD61">
<br>
<center>
<b><font face="arial,helvetica,sanserif" color="#000000">Avalon Developer Design Documentation</font></b>
</center>
<br>
</td>
</tr>
</table>
</center>
<br>
<font size="-2" face="arial,helvetica,sanserif" color="#000000">
<p>
<a href="mailto:"></a>
</p>
</font><font face="arial,helvetica,sanserif" color="#000000"></font>
<br>
<div align="right">
<table cellspacing="0" cellpadding="2" border="0" width="100%">
<tr>
<td bgcolor="#525D76"><font face="arial,helvetica,sanserif" color="#ffffff" size="+1"><b>Introduction</b></font></td>
</tr>
<tr>
<td><font face="arial,helvetica,sanserif" color="#000000">
<br>
<p align="justify">
The Avalon framework consists of interfaces
that define relationships between commonly used application components,
best-of-practice pattern enforcements, and several
lightweight convenience implementations of the generic components.
</p>
<p align="justify">
What that means is that we define the central interface <code>Component</code>.
We also define the relationship (contract) a component has with peers,
ancestors and children. This documentation introduces you to those patterns,
interfaces and relationships.
</p>
<div align="right">
<table cellspacing="0" cellpadding="2" border="0" width="99%">
<tr>
<td bgcolor="#525D76"><font face="arial,helvetica,sanserif" color="#ffffff" size="+0"><b>Target Audience</b></font></td>
</tr>
<tr>
<td><font face="arial,helvetica,sanserif" color="#000000">
<br>
<p align="justify">
This documentation is aimed towards developers who are interested
in the design principles of Avalon, or wish to develop code that
will be incorporated into Avalon.
</p>
</font></td>
</tr>
</table>
</div>
<br>
<div align="right">
<table cellspacing="0" cellpadding="2" border="0" width="99%">
<tr>
<td bgcolor="#525D76"><font face="arial,helvetica,sanserif" color="#ffffff" size="+0"><b>Theoretical Aspects of Component Development</b></font></td>
</tr>
<tr>
<td><font face="arial,helvetica,sanserif" color="#000000">
<br>
<p align="justify">
The following documents provide basic theoretical concepts that are applied
through-out Avalon's framework. It would be good for a prospective developer to
be at least passingly familiar with the concepts outlined in this document.
The documentation also provides links to outside sources which can be consulted
for further information.
</p>
<ol>
<li>
<a href="patterns.html">Patterns</a>
</li>
<li>
<a href="reuse-standards.html">Reuse Standards</a>
</li>
<li>
<a href="inversion-of-control.html">Inversion of Control</a>
</li>
<li>
<a href="separation-of-concerns.html">Separation of Concerns</a>
</li>
<li>
<a href="security.html">Security</a>
</li>
</ol>
</font></td>
</tr>
</table>
</div>
<br>
<div align="right">
<table cellspacing="0" cellpadding="2" border="0" width="99%">
<tr>
<td bgcolor="#525D76"><font face="arial,helvetica,sanserif" color="#ffffff" size="+0"><b>Concrete Descriptions of the Avalon Component model</b></font></td>
</tr>
<tr>
<td><font face="arial,helvetica,sanserif" color="#000000">
<br>
<p align="justify">
This section describes concrete examples of how the theoretical ideas
are applied within the context of Avalon.
</p>
<ol>
<li>
<a href="what-is-a-component.html">What is a Component?</a>
</li>
<li>
<a href="what-is-a-composer.html">What is a Composer?</a>
</li>
<li>
<a href="lifecycle.html">The Component Lifecycle</a>
</li>
<li>
<a href="designing-a-component.html">Designing a Component</a>
</li>
</ol>
</font></td>
</tr>
</table>
</div>
<br>
</font></td>
</tr>
</table>
</div>
<br>
</td>
</tr>
</table>
<br>
<table cellpadding="0" cellspacing="0" border="0" width="100%">
<tr>
<td>
<hr size="1" noshade="">
</td>
</tr>
<tr>
<td align="center"><font color="#525D76" size="-1" face="arial,helvetica,sanserif"><i>
Copyright ©1999-2002 by the Apache Software Foundation.
All Rights Reserved.
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