From: <glassfish_at_javadesktop.org>
Date: Fri, 15 Aug 2008 13:42:11 PDT
For an example of how I migrated a WebSphere app to GlassFish see
<a href="http://weblogs.java.net/blog/sekhar/archive/2008/02/migrating_websp.html">Migrating WebSphere BasicCalculator example to GlassFish</a>.
The general process is :
<ul>
<li>create a war file on WebSphere<br> </li>
<li>run the war file through GlassFish verifier tool. You can find the verifier tool in the GlassFish distribution. <gf-install>/bin. The verifier has proven to be a useful tool in migration and catches issues related to URL patterns, packing issues for e.g. </li>
<li>Migrate the WebSphere specific deployment descriptors and configuration files to GlassFish deployement descriptors. The GlassFish specific deployment descriptors are documented in <a href="http://docs.sun.com/app/docs/doc/819-3673/beaqi?a=view">http://docs.sun.com/app/docs/doc/819-3673/beaqi?a=view</a> . The migration tool on migrate2glassfish.dev.java.net site can help in migration of deployment descriptors but it supports older versions of the application servers.</li>
<li>Check the <a href="http://wiki.glassfish.java.net/Wiki.jsp?page=M2GMigrationGuide">http://wiki.glassfish.java.net/Wiki.jsp?page=M2GMigrationGuide</a> for known WebSphere -> GlassFish migration issues. I update and maintain this guide as more issues become known. So, if you encounter a migration issue not yet documented, please consider adding to the migration guide or at least post to this forum, so I can link to the migration guide. This would benefit the GlassFish community.</li>
<li>Instead of a war file, you can use an exploded directory (i.e. in a format you would get for e.g. by unjarring a war/ear file). </li>
<li>The Java EE AVK <a href="http://java.sun.com/j2ee/avk/">http://java.sun.com/j2ee/avk/</a> is useful for testing portability of you application to J2EE/Java EE APIs. At least for some of the examples I have been migrating and blogging about, I have not found the need to use the AVK.</li>
</ul>
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