<div dir="ltr"><div><div><div>A further question on EJB injection, <br><br>In the Weld reference doc, performing injection on JavaEE component class:<br>To help the integrator, Weld provides WeldManager.fireProcessInjectionTarget() which returns the<br>InjectionTarget to use.<br><br></div>The statement was not mentioned when it talks about performing injection on EJBs. My question is that do we need to call the above method to fire the event.<br><br>Another observation with the code snippet on EJB section. It did not mention how the instance was created. I think 'it.produce()' needs to be there before the it.inject().<br><br>// Obtain the EjbDescriptor for the EJB<br>// You may choose to use this utility method to get the descriptor<br>EjbDescriptor<?> ejbDescriptor = beanManager.getEjbDescriptor(ejbName);<br>// Get an the Bean object<br>Bean<?> bean = beanManager.getBean(ejbDescriptor);<br>// Create the injection target<br>InjectionTarget it = deploymentBeanManager.createInjectionTarget(ejbDescriptor);<br>// Per instance required, create the creational context<br>CreationalContext<?> cc = deploymentBeanManager.createCreationalContext(bean);<br><br></div><div><b>.... missing the line... Object instance = it.produce()</b><br></div><div>// Perform injection and call initializers<br>it.inject(instance, cc);<br><br></div>Thanks<br></div>Emily<br><div><div><br><br></div></div></div><div class="gmail_extra"><br><div class="gmail_quote">On Fri, May 8, 2015 at 11:29 AM, Emily Jiang <span dir="ltr"><<a href="mailto:emijiang6@googlemail.com" target="_blank">emijiang6@googlemail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr"><div><div><div>Thank you Jozef for your helpful response! I have another clarification on the interceptors on JavaEE component classes. <br><br>EE7 spec states the JavaEE component classes, listed in Table EE.5-1, need to support interceptors. Take servlet for an example, which methods can be intercepted?<br><br></div>As the servlet classes are invoked by the container, according to CDI1.2 spec, it seems only service(ServletRequest, ServletResponse) can be intercepted. No other methods can be intercepted. <br><br>Normally customer applications override doPost or doGet, but they cannot be intercepted. I cannot see any value of support interceptors on Servlet. Anything I missed?<br></div>Thanks<span class="HOEnZb"><font color="#888888"><br></font></span></div><span class="HOEnZb"><font color="#888888">Emily<br></font></span></div><div class="HOEnZb"><div class="h5"><div class="gmail_extra"><br><div class="gmail_quote">On Thu, May 7, 2015 at 8:22 AM, Jozef Hartinger <span dir="ltr"><<a href="mailto:jharting@redhat.com" target="_blank">jharting@redhat.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
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Hi Emily, comments inline.<span><br>
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<div>On 05/06/2015 05:38 PM, Emily Jiang
wrote:<br>
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<div>I have a few questions on ejb integration on Weld. <br>
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1)Does Weld handle the instance creation for ejb (using
injectionTarget.produce) or delegate the instance creation
to EJB container? I guess Weld will create the instead as
it can manage decorators. If not, how can decorators be
managed? Please confirm.<br>
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Correct. Weld creates EJB instances using InjectionTarget.produce()<span><br>
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2) When Weld creates the EJB instance, how can the other
non-CDI aroundconstruct interceptors (such as the
interceptors defined via ejb-jar.xml or @Interceptors) be
passed in? I found out the WeldCreationContext and
AroundConstructCallback but I cannot find anything mentioned
in the weld reference doc. Is this the right plugin point?<br>
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Correct, AroundConstructCallback is the API you need to use. The
JavaDoc should be helpful. Let me know if anything is not clear.
I'll add a note about it to the refdoc.<span><br>
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3)If Weld creates the EJB instance, how can all interceptors
(cdi style and ejb style) be invoked? Will the instance need
to be passed back to EJB container together with all CDI
interceptors (get hold of them via
EjbEndpointServiceImpl.java) and EJB container needs to manage
the interceptors being invoked?<br>
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For interception type other than @AroundConstruct we leave it up to
the EJB implementation to handle interception. Information about CDI
interceptors is exposed to the EJB implementation via
EjbServices.registerInterceptors()<span><br>
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4)In Weld spec, it says you must register the
SessionBeanInterceptor as the inner most interceptor in the
stack for all EJBS. Can you clarify what inner most means? Does
this interceptor need to be the first EJB interceptor to be
called or the last EJB interceptor to be invoked?<br>
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Not sure why it says inner most - it should be outer most instead
that is it should be called as first so that the @RequestScope is
available for the other interceptors called later in the chain.<br>
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-- <br>
<div>Thanks<br>
Emily<br>
=================<br>
Emily Jiang<br>
<a href="mailto:ejiang@apache.org" target="_blank">ejiang@apache.org</a><br>
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</blockquote></div><br><br clear="all"><br>-- <br><div>Thanks<br>Emily<br>=================<br>Emily Jiang<br><a href="mailto:ejiang@apache.org" target="_blank">ejiang@apache.org</a><br></div>
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</div></div></blockquote></div><br><br clear="all"><br>-- <br><div class="gmail_signature">Thanks<br>Emily<br>=================<br>Emily Jiang<br><a href="mailto:ejiang@apache.org" target="_blank">ejiang@apache.org</a><br></div>
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