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               <h1>Jakarta EE 9 Work</h1>
             </div>
           </div>
         </div>
         <div class="row">

             <div class="col-md-12">
                 <div id="preamble">
 <div class="sectionbody">
 <div class="paragraph">
 <p>This page is something of a work-in-progress, but attempts to serve as an entrypoint for anyone looking to get involved with this work.</p>
 </div>
 </div>
 </div>
 <div class="sect1">
 <h2 id="_challenge">Challenge</h2>
 <div class="sectionbody">
 <div class="paragraph">
 <p>Jakarta EE 9 removes a very small number of specifications, and doesn&#8217;t introduce functional changes to the specifications. It does, however, introduce a package
 rename, which will have a very wide impact. Not only do the specification jars and implementations in the server need to change their namespaces, user applications
 will need to change any references as well.</p>
 </div>
 </div>
 </div>
 <div class="sect1">
 <h2 id="_goals">Goals</h2>
 <div class="sectionbody">
 <div class="ulist">
 <ul>
 <li>
 <p>Try and maintain a single codebase for javax and jakarta. It&#8217;s tempting to fork master and embark on a massive renaming exercise. That&#8217;s complex as we&#8217;d need to do that for various dependencies as well, who may also have other branches and timelines. Having two code-bases also means that any changes need to be applied twice, and with renamed packages, its unlikely the git merging or cherry-picking will work.</p>
 </li>
 <li>
 <p>Be backwards compatible - One goal I had in my mined, is that if you have an application that uses javax, you&#8217;d probably like to be able to run it on a new Jakarta EE server. There are some options here - I quite like the idea of running the Transformer as a javaagent, so any applications deployed using the old namespaces are converted on the fly at the bytecode level.</p>
 </li>
 <li>
 <p>Tooling - I wonder what tooling we could potentially provide? One thought I had was a Maven plugin that can transform a war/ear file for you as part of a build.</p>
 </li>
 </ul>
 </div>
 </div>
 </div>
 <div class="sect1">
 <h2 id="_approaches">Approaches</h2>
 <div class="sectionbody">
 <div class="ulist">
 <ul>
 <li>
 <p>Eclipse Transformer</p>
 </li>
 </ul>
 </div>
 <div class="paragraph">
 <p>Investigate the use of the Eclipse Transformer (<a href="https://projects.eclipse.org/projects/technology.transformer">https://projects.eclipse.org/projects/technology.transformer</a>) to translate the server, and the example applications to the Jakarta namespace.</p>
 </div>
 <div class="paragraph">
 <p><a href="eclipse-transformer.html">Building and running the Eclipse Transformer</a></p>
 </div>
 <div class="ulist">
 <ul>
 <li>
 <p>???</p>
 </li>
 </ul>
 </div>
 </div>
 </div>
 <div class="sect1">
 <h2 id="_tasks_tracker">Tasks Tracker</h2>
 <div class="sectionbody">
 <div class="paragraph">
 <p>TBD: something will appear here soon</p>
 </div>
 </div>
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	<h1>Jakarta EE 9 Work</h1>
	</div>
	</div>
	</div>
	<div class="row">

	<div class="col-md-12">
	<div id="preamble">
	<div class="sectionbody">
	<div class="paragraph">
	<p>This page is something of a work-in-progress, but attempts to serve as an entrypoint for anyone looking to get involved with this work.</p>
	</div>
	</div>
	</div>
	<div class="sect1">
	<h2 id="_challenge">Challenge</h2>
	<div class="sectionbody">
	<div class="paragraph">
	<p>Jakarta EE 9 removes a very small number of specifications, and doesn’t introduce functional changes to the specifications. It does, however, introduce a package
	rename, which will have a very wide impact. Not only do the specification jars and implementations in the server need to change their namespaces, user applications
	will need to change any references as well.</p>
	</div>
	</div>
	</div>
	<div class="sect1">
	<h2 id="_goals">Goals</h2>
	<div class="sectionbody">
	<div class="ulist">
	<ul>
	<li>
	<p>Try and maintain a single codebase for javax and jakarta. It’s tempting to fork master and embark on a massive renaming exercise. That’s complex as we’d need to do that for various dependencies as well, who may also have other branches and timelines. Having two code-bases also means that any changes need to be applied twice, and with renamed packages, its unlikely the git merging or cherry-picking will work.</p>
	</li>
	<li>
	<p>Be backwards compatible - One goal I had in my mined, is that if you have an application that uses javax, you’d probably like to be able to run it on a new Jakarta EE server. There are some options here - I quite like the idea of running the Transformer as a javaagent, so any applications deployed using the old namespaces are converted on the fly at the bytecode level.</p>
	</li>
	<li>
	<p>Tooling - I wonder what tooling we could potentially provide? One thought I had was a Maven plugin that can transform a war/ear file for you as part of a build.</p>
	</li>
	</ul>
	</div>
	</div>
	</div>
	<div class="sect1">
	<h2 id="_approaches">Approaches</h2>
	<div class="sectionbody">
	<div class="ulist">
	<ul>
	<li>
	<p>Eclipse Transformer</p>
	</li>
	</ul>
	</div>
	<div class="paragraph">
	<p>Investigate the use of the Eclipse Transformer (<a href="https://projects.eclipse.org/projects/technology.transformer">https://projects.eclipse.org/projects/technology.transformer</a>) to translate the server, and the example applications to the Jakarta namespace.</p>
	</div>
	<div class="paragraph">
	<p><a href="eclipse-transformer.html">Building and running the Eclipse Transformer</a></p>
	</div>
	<div class="ulist">
	<ul>
	<li>
	<p>???</p>
	</li>
	</ul>
	</div>
	</div>
	</div>
	<div class="sect1">
	<h2 id="_tasks_tracker">Tasks Tracker</h2>
	<div class="sectionbody">
	<div class="paragraph">
	<p>TBD: something will appear here soon</p>
	</div>
	</div>
	</div>
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