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<a class="user-hover" rel="ThomasGo" id="email_ThomasGo" href="https://issues.jboss.org/secure/ViewProfile.jspa?name=ThomasGo" style="color:#003366;">Thomas Goettlich</a>
created <img src="https://issues.jboss.org/images/icons/health.gif" height="16" width="16" border="0" align="absmiddle" alt="Enhancement"> <a style='color:#003366;text-decoration:none;' href='https://issues.jboss.org/browse/WELD-1162'>WELD-1162</a>
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<a style='color:#003366;text-decoration:none;' href='https://issues.jboss.org/browse/WELD-1162'><strong>Intercept brigde methods with a different signature</strong></a>
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<strong style="font-weight:normal;color:#505050;">Issue Type:</strong>
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<img src="https://issues.jboss.org/images/icons/health.gif" height="16" width="16" border="0" align="absmiddle" alt="Enhancement"> Enhancement
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<strong style="font-weight:normal;color:#505050;">Affects Versions:</strong>
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1.1.5.Final </td>
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<strong style="font-weight:normal;color:#505050;">Assignee:</strong>
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Unassigned </td>
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<strong style="font-weight:normal;color:#505050;">Components:</strong>
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Interceptors and Decorators </td>
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<strong style="font-weight:normal;color:#505050;">Created:</strong>
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10/Jul/12 7:47 AM
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<strong style="font-weight:normal;color:#505050;">Description:</strong>
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<p style='margin-top:0;margin-bottom:10px;'>According to <a href="https://issues.jboss.org/browse/WELD-568" title="When overridden methods with covariant return types are intercepted, the result is a duplicate interceptor definition"><del>WELD-568</del></a> bridge methods for covariant return types should not be intercepted.</p>
<p style='margin-top:0;margin-bottom:10px;'>However, bridge methods that have a different signature, e.g. by using generics, should be interceptable.</p>
<p style='margin-top:0;margin-bottom:10px;'>Consider the following case using generic EJB methods:</p>
<div class="code panel" style="border-width: 1px;"><div class="codeContent panelContent">
<pre class="code-java"><span class="code-comment">//base definitions
</span><span class="code-keyword">public</span> class BaseParam {}
<span class="code-keyword">public</span> <span class="code-keyword">interface</span> BaseInterface<T <span class="code-keyword">extends</span> BaseParam> {
<span class="code-keyword">public</span> void doSomething( T param);
}
<span class="code-comment">//extension and ejb
</span><span class="code-keyword">public</span> class SpecialParam <span class="code-keyword">extends</span> BaseParam{}
<span class="code-keyword">public</span> <span class="code-keyword">interface</span> SpecialService <span class="code-keyword">extends</span> BaseInterface<SpecialParam> {}
@Stateless
@Local(SpecialService.class)
@SomeCDIInterceptorBinding
<span class="code-keyword">public</span> class SpecialServiceImpl <span class="code-keyword">implements</span> SpecialService {
<span class="code-keyword">public</span> void doSomething( SpecialParam param) {}
}
<span class="code-comment">//call in another EJB
</span>@EJB
<span class="code-keyword">private</span> SpecialService s;
...
s.doSomething(<span class="code-keyword">new</span> SpecialParam());</pre>
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<p style='margin-top:0;margin-bottom:10px;'>For this call the invocation context contains the method signature "SpecialServiceImpl.doSomething(BaseParam)" which is the bridge method generated due to the generic parameter.</p>
<p style='margin-top:0;margin-bottom:10px;'>However, the method "Beans.getInterceptableMethods(WeldClass)" ignores this method when registering the interceptor because it is a bridge method:</p>
<div class="code panel" style="border-width: 1px;"><div class="codeContent panelContent">
<pre class="code-java"><span class="code-object">boolean</span> businessMethod = !annotatedMethod.isStatic()
&& !annotatedMethod.isAnnotationPresent(Inject.class)
&& !annotatedMethod.getJavaMember().isBridge();</pre>
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<p style='margin-top:0;margin-bottom:10px;'>Due to this, calls to bridge methods within EJBs are not intercepted.</p>
<p style='margin-top:0;margin-bottom:10px;'>Possible solution:</p>
<p style='margin-top:0;margin-bottom:10px;'>Bridge methods are not ignored by default but are replaced by non-bridge methods having the same signature when the interceptable methods are collected. That should solve this issue as well as <a href="https://issues.jboss.org/browse/WELD-568" title="When overridden methods with covariant return types are intercepted, the result is a duplicate interceptor definition"><del>WELD-568</del></a>.</p>
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<strong style="font-weight:normal;color:#505050;">Environment:</strong>
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JBoss 7.1.0.Final
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<strong style="font-weight:normal;color:#505050;">Project:</strong>
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<a style="color:#003366;" href="https://issues.jboss.org/browse/WELD">Weld</a>
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<strong style="font-weight:normal;color:#505050;">Priority:</strong>
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<img src="https://issues.jboss.org/images/icons/priority_major.gif" height="16" width="16" border="0" align="absmiddle" alt="Major"> Major
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<strong style="font-weight:normal;color:#505050;">Reporter:</strong>
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<td style="color:#000000;font-family:Arial,FreeSans,Helvetica,sans-serif;font-size:12px;padding:0 0 10px 0;width:100%;">
<a class="user-hover" rel="ThomasGo" id="email_ThomasGo" href="https://issues.jboss.org/secure/ViewProfile.jspa?name=ThomasGo" style="color:#003366;">Thomas Goettlich</a>
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