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Re: JBoss : persistence and EntityManager injection
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created by <a href="http://community.jboss.org/people/zecas">zecas zecas</a> in <i>Beginner's Corner</i> - <a href="http://community.jboss.org/message/566437#566437">View the full discussion</a>
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<div class="jive-rendered-content"><blockquote class="jive-quote"><p><br/>Wolf-Dieter Fink wrote:</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>For me it is unclear how you call the method something.</p><p>Injection is nothing magic, the container must have a chance to do it.</p></blockquote><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p style="padding: 0pt; margin: 0pt;">First of all, Thanks for the help.</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p style="padding: 0pt; margin: 0pt;">I'm invoking the method in a servlet context listener defined in "web.xml".</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p style="padding: 0pt; margin: 0pt;">During the listener execution, I do something like:</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><pre class="jive-pre"><code class="jive-code jive-java">SimpleMessage sm = <font color="navy"><b>new</b></font> SimpleMessage!
();
sm.something();
</code></pre><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>If I inject the EntityManagerFactory in the listener class, it is successfully instantiated and available (not NULL), but inside that class, I'm not getting it with a value other than NULL.</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>Since I'm invoking the class from within a listener, which is inside the container, I was hoping (and testing) to get it to work ... to avoid having to pass it to the underlying class I'm invoking, and that will do the work.</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>(Understanding this behaviour will help to clarify some doubts I'm having for some time.)</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>Thanks.</p></div>
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