tomee-8.0/docs/application-composer/history.html - tomee-site-pub - Git at Google

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               <h1>Application Composer History</h1>
             </div>
           </div>
         </div>
         <div class="row">

             <div class="col-md-12">
                 <div id="preamble">
 <div class="sectionbody">
 <div class="paragraph">
 <p>ApplicationComposer can look like a long story but following it you&#8217;ll
 realize it is finally quite natural.</p>
 </div>
 </div>
 </div>
 <div class="sect1">
 <h2 id="_internal_tool">Internal tool</h2>
 <div class="sectionbody">
 <div class="paragraph">
 <p>TomEE (former OpenEJB) is an Application Server. One of the most
 important task writing an Application Server is to ensure the
 implemented features do what is expected. However it is hard to write N
 test applications, in N modules to ensure it works smoothly. In
 particular when you want to test a small part of the whole server.</p>
 </div>
 <div class="paragraph">
 <p>So you immediately think to mocking what is not needed. It works but has
 a big pitfall: test is often a noop or hide a lot of issues.</p>
 </div>
 <div class="paragraph">
 <p>So the idea came to be able to shortcut the part we don&#8217;t care much
 about runtime: the application packaging.</p>
 </div>
 <div class="paragraph">
 <p>Here what is the ApplicationComposer: an (originally test) API to create
 a EE application programmatically.</p>
 </div>
 </div>
 </div>
 <div class="sect1">
 <h2 id="_designs">Designs</h2>
 <div class="sectionbody">
 <div class="paragraph">
 <p>ApplicationComposer design was aligned on this simple need. An
 ApplicationComposer "test" (browsing other pages you&#8217;ll see it is much
 more than test today) is composed of mainly 2 parts:</p>
 </div>
 <div class="ulist">
 <ul>
 <li>
 <p>modules: methods describing a module of an application. It can be a
 persistence.xml, an ejb-jar.xml, a web.xml&#8230;&#8203;but all programmatically.</p>
 </li>
 <li>
 <p>configuration: container configuration allowing to interact with
 container (creating resources for instance)</p>
 </li>
 </ul>
 </div>
 </div>
 </div>
 <div class="sect1">
 <h2 id="_test_but_not_only">Test but not only</h2>
 <div class="sectionbody">
 <div class="paragraph">
 <p>ApplicationComposer was originally a JUnit only runner but was pretty
 quickly extended to TestNG too and today you can even use it to write
 <code>main(String[])</code> - even in a shade!</p>
 </div>
 <div class="paragraph">
 <p>API was greatly simplified and it allows you pretty easily to deploy
 with a simple shade a JAXRS/JAXWS/JMS service!</p>
 </div>
 </div>
 </div>
 <div class="sect1">
 <h2 id="_going_further">Going further</h2>
 <div class="sectionbody">
 <div class="paragraph">
 <p>If you want to go further you can browse:</p>
 </div>
 <div class="ulist">
 <ul>
 <li>
 <p><a href="getting-started.html">Getting Started</a></p>
 </li>
 <li>
 <p><a href="advanced.html">Advanced</a></p>
 </li>
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	<div class='page-header'>

	<h1>Application Composer History</h1>
	</div>
	</div>
	</div>
	<div class="row">

	<div class="col-md-12">
	<div id="preamble">
	<div class="sectionbody">
	<div class="paragraph">
	<p>ApplicationComposer can look like a long story but following it you’ll
	realize it is finally quite natural.</p>
	</div>
	</div>
	</div>
	<div class="sect1">
	<h2 id="_internal_tool">Internal tool</h2>
	<div class="sectionbody">
	<div class="paragraph">
	<p>TomEE (former OpenEJB) is an Application Server. One of the most
	important task writing an Application Server is to ensure the
	implemented features do what is expected. However it is hard to write N
	test applications, in N modules to ensure it works smoothly. In
	particular when you want to test a small part of the whole server.</p>
	</div>
	<div class="paragraph">
	<p>So you immediately think to mocking what is not needed. It works but has
	a big pitfall: test is often a noop or hide a lot of issues.</p>
	</div>
	<div class="paragraph">
	<p>So the idea came to be able to shortcut the part we don’t care much
	about runtime: the application packaging.</p>
	</div>
	<div class="paragraph">
	<p>Here what is the ApplicationComposer: an (originally test) API to create
	a EE application programmatically.</p>
	</div>
	</div>
	</div>
	<div class="sect1">
	<h2 id="_designs">Designs</h2>
	<div class="sectionbody">
	<div class="paragraph">
	<p>ApplicationComposer design was aligned on this simple need. An
	ApplicationComposer "test" (browsing other pages you’ll see it is much
	more than test today) is composed of mainly 2 parts:</p>
	</div>
	<div class="ulist">
	<ul>
	<li>
	<p>modules: methods describing a module of an application. It can be a
	persistence.xml, an ejb-jar.xml, a web.xml…but all programmatically.</p>
	</li>
	<li>
	<p>configuration: container configuration allowing to interact with
	container (creating resources for instance)</p>
	</li>
	</ul>
	</div>
	</div>
	</div>
	<div class="sect1">
	<h2 id="_test_but_not_only">Test but not only</h2>
	<div class="sectionbody">
	<div class="paragraph">
	<p>ApplicationComposer was originally a JUnit only runner but was pretty
	quickly extended to TestNG too and today you can even use it to write
	<code>main(String[])</code> - even in a shade!</p>
	</div>
	<div class="paragraph">
	<p>API was greatly simplified and it allows you pretty easily to deploy
	with a simple shade a JAXRS/JAXWS/JMS service!</p>
	</div>
	</div>
	</div>
	<div class="sect1">
	<h2 id="_going_further">Going further</h2>
	<div class="sectionbody">
	<div class="paragraph">
	<p>If you want to go further you can browse:</p>
	</div>
	<div class="ulist">
	<ul>
	<li>
	<p><a href="getting-started.html">Getting Started</a></p>
	</li>
	<li>
	<p><a href="advanced.html">Advanced</a></p>
	</li>
	</ul>
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