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CXF jms integration
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reply from <a href="http://community.jboss.org/people/richard.opalka%40jboss.com">Richard Opalka</a> in <i>JBoss Web Services Development</i> - <a href="http://community.jboss.org/message/536448#536448">View the full discussion</a>
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<div class="jive-rendered-content"><p>Abbreviations:</p><p> * CXF - CXF integration layer</p><p> * ASIL - JBossWS Application Server Integration Layer</p><p> * SPI - JBossWS SPI - the only dependency reused cross different JBossWS abstractions</p><p> * DA - JBossWS Deployment Aspect</p><p> * UMDM - JBossWS Universal Meta Data Model</p><p> * JMS MD - AS JMS Meta Data</p><p> * AS API - compilation dependency on AS API classes</p><p> * IAC - in any case</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>Hi Jim,</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>   first approach is fundamentally wrong because:</p><p> * it would violate our abstractions</p><p> * it wouldn't reuse existing code/architecture</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>We cannot introduce <strong>JBossWSCXF*Deployers</strong> because we would introduce <strong>CXF -> AS API</strong> dependency. Only allowed dependency</p><p>is <a class="jive-link-external-small" href="http://www.jboss.org/file-access/default/members/jbossws/images/wsf.png">CXF -> SPI</a>. This is because AS architecture can/will change over time and we want to be AS agnostic IAC.</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>Yes, the solution 2 is little bit more complex one but we should always follow the golden programmers rule:</p><p><strong>Either do it properly or don't do it at all (</strong>otherwise our code would become unmaintanable in the future<strong>).</strong></p><p><strong><br/></strong></p><p>Here are my suggestions how we should proceed with <strong>approach 2</strong></p><p>(<strong>ensures proper abstractions, dependencies and code/architecture reuse</strong>):</p><p> * extend our UMDM (located in SPI) to provide JMS endpoint abstractions</p><p> * extend our DA framework to distinguish DA aspects intended to create web based endpoints and jms based endpoints</p><p> * update our ASIL (concretely WSDeploymentAspectDeployer) to distinguish between Web DAs and JMS DAs</p><p> * implement CXF DA that will map jboss-cxf.xml MD to our UMDM (ensures <a class="jive-link-external-small" href="http://www.jboss.org/file-access/default/members/jbossws/images/wsf.png">CXF -> SPI</a> dependency)</p><p> * implement ASIL DA that will create JMS MD from our UMDM (ensures <a class="jive-link-external-small" href="http://www.jboss.org/file-access/default/members/jbossws/images/wsf.png">ASIL -> SPI</a> dependency)</p><p> * implement CXF DA that will register plain JMS endpoints with CXF (ensures <a class="jive-link-external-small" href="http://www.jboss.org/file-access/default/members/jbossws/images/wsf.png">CXF -> SPI</a> dependency)</p></div>
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