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[JBoss 6.0.0M3] Cannot use @EJB on jax-ws handler and webservice port
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reply from <a href="http://community.jboss.org/people/O.Bergner">Olaf Bergner</a> in <i>JBoss Web Services</i> - <a href="http://community.jboss.org/message/556964#556964">View the full discussion</a>
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<div class="jive-rendered-content"><p>I tried to debug the issue, alas without much luck. What puzzles me though when looking at the method</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>protected String findWithin(DeploymentUnit du, DeploymentUnit excludeChild, EjbReference reference)<br/>   {<br/>      String jndiName = find(du, reference);<br/>      if(jndiName != null)<br/>         return jndiName;<br/>      <br/>      List<DeploymentUnit> children = du.getChildren();<br/>      if(children != null)<br/>      {<br/>         for(DeploymentUnit child : children)<br/>         {<br/>            // already searched that one<br/>            if(child == excludeChild)<br/>               continue;<br/>            <br/>            jndiName = findWithin(child, null, reference);<br/>            if(jndiName != null)<br/>               return jndiName;<br/>         }<br/>      }<br/>      <br/>      DeploymentUnit parent = du.getParent();<br/>      if(parent != null)<br/>         return findWithin(parent, du, reference);<br/>      return null;<br/>   }</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>is the question how it is supposed to work. Let's say we have</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>app.ear</p><p>   |</p><p>   -- ejb1.jar</p><p>   |</p><p>   -- ejb2.jar</p><p>   |</p><p>   -- ejb3.jar</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>ejb1.jar contains an artifact referencing a session bean that resides in ejb3.jar. If I understand the code above correctly - and this is a BIG if - what will happen is what follows:</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>1. We start searching in ejb1.jar.</p><p>2. We try to find the referenced session bean in ejb1.jar itself. This fails.</p><p>3. We try to find the referenced session bean in one of ejb1.jar's children. There are no such children, so this fails, too.</p><p>4. We try to find the referenced session bean in ejb1.jar's parent, i.e. app.ear, telling this parent to exclude the current deployment unit, i.e. ejb1.jar.</p><p>5. We try to find - since app.ear itself does not contain any session beans - the referenced session bean in the list of app.ear's children minus ejb1.jar, i.e. [ejb2.jar, ejb3.jar].</p><p>6. Since ejb2.jar does not contain the referenced session bean either, we end up repeating steps 2 - 4, with ejb1.jar replaced by ejb2.jar.</p><p>7. We try to find the referenced session bean in the list of app.ear's children minus ejb2.jar, i.e. [ejb1.jar,ejb3.jar]. And now we are in trouble, since ...</p><p>8. We repeat steps 1 - 7 until we run out of stack space.</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>Could it be that the above algorithm only succeeds if</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>1. the number of children to app.ear is not greater than two OR</p><p>2. the referenced session bean resides in the same deployment unit as the referencing artifact OR</p><p>3. the referenced session bean resides in the deployment unit immediately following - from app.ear's perspective - the deployment unit containing the referencing artifact (ejb2.jar in our example)?</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>At least this seems to be implied by a casual analysis of the code above. But then again, I may be wrong and it's rather a problem in my code.</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>Cheers,</p><p>Olaf</p></div>
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