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<td class="page-title-pattern-first-line " style="padding: 0px; border-collapse: collapse; font-family: Arial, sans-serif; font-size: 14px; padding-top: 10px"> <a href="https://issues.jboss.org/browse/WELD" style="color: #3b73af; text-decoration: none">Weld</a> / <a href="https://issues.jboss.org/browse/WELD-2586" style="color: #3b73af; text-decoration: none"><img src="cid:jira-generated-image-avatar-e66dc679-cfcc-4038-9b5e-a9fb495b6411" height="16" width="16" border="0" align="absmiddle" alt="Bug" style="vertical-align: text-bottom"></a> <a href="https://issues.jboss.org/browse/WELD-2586" style="color: #3b73af; text-decoration: none">WELD-2586</a> </td>
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<td style="vertical-align: top;; padding: 0px; border-collapse: collapse; padding-right: 5px; font-size: 20px; line-height: 30px; mso-line-height-rule: exactly" class="page-title-pattern-header-container"> <span class="page-title-pattern-header" style="font-family: Arial, sans-serif; padding: 0; font-size: 20px; line-height: 30px; mso-text-raise: 2px; mso-line-height-rule: exactly; vertical-align: middle"> <a href="https://issues.jboss.org/browse/WELD-2586" style="color: #3b73af; text-decoration: none">CDI deployment fails when there are synthetic final methods in a class</a> </span> </td>
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<td class="has-icon" style="padding: 0px; border-collapse: collapse; font: normal 14px/20px Arial, sans-serif; padding: 2px 0 2px 5px; vertical-align: top"> <img src="cid:jira-generated-image-avatar-e66dc679-cfcc-4038-9b5e-a9fb495b6411" height="16" width="16" border="0" align="absmiddle" alt="Bug" style="vertical-align: text-bottom"> Bug </td>
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<td style="padding: 0px; border-collapse: collapse; font: normal 14px/20px Arial, sans-serif; padding: 2px 0 2px 5px; vertical-align: top"> 3.1.1.Final </td>
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<td style="padding: 0px; border-collapse: collapse; font: normal 14px/20px Arial, sans-serif; padding: 2px 0 2px 5px; vertical-align: top"> Unassigned </td>
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<td style="padding: 0px; border-collapse: collapse; font: normal 14px/20px Arial, sans-serif; padding: 2px 0 2px 5px; vertical-align: top"> 17/Jun/19 11:08 AM </td>
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<td style="padding: 0px; border-collapse: collapse; font: normal 14px/20px Arial, sans-serif; padding: 2px 0 2px 5px; vertical-align: top"> <a class="user-hover" rel="bbobcik" id="email_bbobcik" href="https://issues.jboss.org/secure/ViewProfile.jspa?name=bbobcik" style="color:#0052cc;; color: #3b73af; text-decoration: none">Boleslav Bobcik</a> </td>
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<td class="text-paragraph-pattern-container mobile-resize-text " style="padding: 0px; border-collapse: collapse; padding: 0 0 10px 0"> <p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0 0; margin-top: 0">A bean archive contains a bean class that is (as a post-compilation step) instrumented by ByteBuddy bytecode manipulation framework. As a consequence, certain hidden methods are added to the .class file; when examined with <b>javap</b> tool, these method generally look like:</p>
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<pre style="margin: 10px 0 0 0; margin-top: 0; max-height: 30em; overflow: auto; white-space: pre-wrap; word-wrap: normal; white-space: pre; word-break: normal; word-wrap: break-word; word-break: break-word; white-space: pre-wrap">final java.util.Queue someMethod$__orig$accessor$h7Z5pZSX(java.util.List, java.util.Set);
descriptor: (Ljava/util/List;Ljava/util/Set;)Ljava/util/Queue;
flags: ACC_FINAL, ACC_SYNTHETIC
Code:
stack=3, locals=3, args_size=3
0: aload_0
1: aload_1
2: aload_2
3: invokespecial #538
6: areturn
</pre>
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</div> <p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0 0">The methods are synthetic, final and package-private. This combination of attributes causes exception</p>
<blockquote style="margin: 10px 0 0 0; border-left: 1px solid #cccccc; color: #707070; margin-left: 19px; padding: 10px 20px">
<p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0 0; margin-top: 0">org.jboss.weld.exceptions.UnproxyableResolutionException: <a href="https://issues.jboss.org/browse/WELD-1480" title="Make it possible to restrict CDI context activation based on request URI" class="issue-link" data-issue-key="WELD-1480" style="color: #3b73af; text-decoration: none"><del>WELD-001480</del></a>: Bean type <br> class com.acme.SomeClass is not proxyable because it contains a final method final java.util.Queue com.acme.SomeClass.someMethod$__orig$accessor$h7Z5pZSX(java.util.List,java.util.Set)</p>
</blockquote> <p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0 0">I have determined that this is due to a check in org.jboss.weld.util.reflection.Reflections#getNonPrivateNonStaticFinalMethod() where only <b>final</b>, <b>private</b> and <b>static</b> method attributes are tested, disregarding <b>synthetic</b> attribute. However, according to a discussion at <a href="https://stackoverflow.com/questions/41750806/avoid-generation-of-final-accessor-methods" class="external-link" rel="nofollow" style="color: #3b73af; text-decoration: none">StackOverflow</a>, dependency injection frameworks ought to ignore synthetic members.</p> <p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0 0">I have locally modified Weld Core, class org.jboss.weld.util.reflection.Reflections, method getNonPrivateNonStaticMethod() as follows:</p>
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<pre class="code-java" style="margin: 10px 0 0 0; margin-top: 0; max-height: 30em; overflow: auto; white-space: pre-wrap; word-wrap: normal">
<span class="code-keyword" style="color: #000091">public</span> <span class="code-keyword" style="color: #000091">static</span> Method getNonPrivateNonStaticFinalMethod(<span class="code-object" style="color: #910091">Class</span><?> type) {
<span class="code-keyword" style="color: #000091">for</span> (<span class="code-object" style="color: #910091">Class</span><?> clazz = type; clazz != <span class="code-keyword" style="color: #000091">null</span> && clazz != <span class="code-object" style="color: #910091">Object</span>.class; clazz = clazz.getSuperclass()) {
<span class="code-keyword" style="color: #000091">for</span> (Method method : AccessController.doPrivileged(<span class="code-keyword" style="color: #000091">new</span> GetDeclaredMethodsAction(clazz))) {
<span class="code-keyword" style="color: #000091">if</span> (isFinal(method) && !isPrivate(method) && !isStatic(method) && !method.isSynthetic()) {
<span class="code-keyword" style="color: #000091">return</span> method;
}
}
}
<span class="code-keyword" style="color: #000091">return</span> <span class="code-keyword" style="color: #000091">null</span>;
}
</pre>
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</div> <p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0 0">This solution was then tested and appears to work correctly.</p> </td>
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