mcconnell 2004/03/31 10:05:23
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Log:
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Index: overview.xml
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<?xml version="1.0" encoding="UTF-8"?>
<document>
<properties>
<author email="dev@avalon.apache.org">Avalon Documentation Team</author>
<title>Apache Avalon</title>
</properties>
<body>
<section name="News and Information">
<ul>
<li>
03/12/2004 : <a href="news.html#12-MAR-2004: Avalon Adopts Single
Platform Strategy">Avalon Adopts Single Platform Strategy</a>
</li>
<li>
03/01/2004 : <a href="news.html#01-MAR-2004: Fortress + Excalibur
Release">New Fortress and Excalibur Component Release</a>
</li>
<li>
02/24/2004 : <a href="news.html#24-FEB-2004: Wiki Revisions">Wiki
Revisions</a>
</li>
<li>
02/12/2004 : <a href="news.html#12-FEB-2004: Avalon Adopts
JIRA">Avalon Adopts JIRA</a>
</li>
<li>
01/18/2004 : <a href="news.html#18-JAN-2004: MerlinDeveloper
Graduates From Incubator">MerlinDeveloper graduates from Apache Incubator</a>
</li>
<li>
12/06/2003 : <a href="news.html#06-DEC-2003: New Wiki Site">New
Wiki Site</a>
</li>
</ul>
</section>
<section name="What is it?">
<p>
Apache Avalon provides a complete platform for component
programming including a core framework, utilities, tools,
components and containers. By using key design patterns such as
Inversion of Control (IoC) and Seperation of Concerns (SoC),
Avalon achieves a number of advantages over traditional object
oriented programming frameworks:
</p>
<ul>
<li>No implementation lock</li>
<li>Low coupling between components</li>
<li>Component lifecycle management</li>
<li>Configuration management and easy to use API</li>
<li>Component meta-data framework and tools</li>
<li>Service dependecy management</li>
<li>Embeddable containers for standalone, J2EE and web
environments</li>
</ul>
<p>
In Component Oriented Programming (COP), reusable and
replaceable components can be assembled in a container to
provide application blocks. Blocks in turn can be used to build
anything from a client desktop application to an FTP server to a
web service. Avalon provides a variety of basic components and
default application blocks in order to help you quickly build
your own application solution.
</p>
<p>
Given this, the Avalon team aims to:
</p>
<ul>
<li>Provide a stable COP development platform (currently in
JAVA)</li>
<li>Create a rich set of client components API's and default
implementations</li>
<li>Develop complete container solutions</li>
<li>Explore and extend COP development practices</li>
</ul>
</section>
<section name="Avalon Products and Sub-Projects">
<ul>
<li><a
href="product/containers/index.html"><strong>Containers</strong></a>:
several complete container implementations used to host
components.
</li>
<li><a
href="product/framework/index.html"><strong>Framework</strong></a>:
provides a specification of design patterns and rules in the
form of interfaces.
</li>
<li><a
href="product/components/index.html"><strong>Components</strong></a>:
contains container related utilities and simple core
components.
</li>
</ul>
</section>
<section name="What Next">
<p>
If you're new to Avalon or COP in general, "Welcome!" You may
be now wondering where to start. The following should help you
find what you're looking for.
</p>
<subsection name="Container Users">
<p>
Avalon provides a number of containers such as Merlin and
Fortress. For information about containers in general, see the
<a href="product/containers/index.html">containers</a> section. For
other
Avalon-based or Avalon-related container solutions, see the <a
href="related/index.html">related projects</a> section. Avalon is
used in several external projects, such as Cocoon, OpenIM, and
others.
</p>
</subsection>
<subsection name="Component Developers">
<p>
If you're new to Avalon, be certain to check out the <a
href="doc/index.html">Articles</a> section, specifically, the
<a href="developing/index.html">Developing With Avalon</a> white paper
and the Getting Started Tutorial. You may also want to look at the
Cornerstone documentation to examine existing utilities and components.
</p>
</subsection>
<subsection name="Avalon Developers">
<p>
Whether you're a contributor or a committer, you'll should
familiarize yourself with the <a
href="community/process/code-standards.html">Coding Standards</a>
document. The <a href="community/index.html">Community</a>
section also reviews various standards, policies, and practices
within the Avalon community.
</p>
</subsection>
<subsection name="About Component Oriented Programming">
<p>
If you're interested in learning more about component oriented
programming, then in addition to the <a
href="doc/index.html">Articles</a> section, look at the
Framework documentation. The <a
href="http://avalon.apache.org/framework/index.html";>Framework</a>
project contains
sections of COP practices and is itself a good COP reference
implementation.
</p>
</subsection>
<subsection name="General Resources">
<p>
Don't forget to wade through the wealth of material on our <a
href="http://nagoya.apache.org/wiki/apachewiki.cgi?AvalonProjectPages";>
Wiki</a> site. The <a href="mailing-lists.html">mailing
lists</a> are also an excellent resource for support and more
information.
</p>
</subsection>
</section>
</body>
</document>
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