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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-1731" style="color: #3b73af; text-decoration: none"><img src="cid:jira-generated-image-static-bug-30e8169e-782d-4b3d-afc4-c4abb4e00da5" height="16" width="16" border="0" align="absmiddle" alt="Bug" style="vertical-align: text-bottom" /></a> <a href="https://issues.jboss.org/browse/WELD-1731" style="color: #3b73af; text-decoration: none">WELD-1731</a>
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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-1731" style="color: #3b73af; text-decoration: none">Bogus circular injection warning when injecting two or more fields from same producer</a> </span>
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Affects Versions:
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2.1.2.Final
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Unassigned
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Components:
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Producers (Methods, Fields and Disposers)
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Created:
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01/Sep/14 4:17 PM
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Environment:
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WildFly 8.1.0.Final
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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="atijms" id="email_atijms" href="https://issues.jboss.org/secure/ViewProfile.jspa?name=atijms" style="color:#3b73af;; color: #3b73af; text-decoration: none">arjan tijms</a>
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Public (Everyone can see)
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<p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0 0">When a bean has two or more fields that are both injected by the same producer, and this producer is exactly created when the bean that is injected is also created, the first field is injected without any issues, but for every other field Weld logs the following bogus warning:</p>
<div class="code panel" style="border-width: 1px;; border: 1px solid #ccc; background: #f5f5f5; font-size: 12px; line-height: 1.333; font-family: monospace; border: 1px solid #ccc; -moz-border-radius: 3px 3px 3px 3px; border-radius: 3px 3px 3px 3px; margin: 9px 0">
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<pre class="code-java" style="margin: 10px 0 0 0; max-height: 30em; overflow: auto; white-space: pre-wrap; word-wrap: normal">
WELD-000018: Executing producer field or method [BackedAnnotatedMethod] @Produces <span class="code-keyword" style="color: #000091">public</span> test.ProducerBean.produce() on incomplete declaring bean Managed Bean [class test.ProducerBean] with qualifiers [@Any @Default] due to circular injection
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<p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0 0">The producer:</p>
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<pre class="code-java" style="margin: 10px 0 0 0; max-height: 30em; overflow: auto; white-space: pre-wrap; word-wrap: normal">
@ApplicationScoped
<span class="code-keyword" style="color: #000091">public</span> class ProducerBean {
@Produces
<span class="code-keyword" style="color: #000091">public</span> <span class="code-object" style="color: #910091">String</span> produce() {
<span class="code-keyword" style="color: #000091">return</span> <span class="code-quote" style="color: #009100">"test"</span>;
}
}
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<p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0 0">The bean that's injected:</p>
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<pre class="code-java" style="margin: 10px 0 0 0; max-height: 30em; overflow: auto; white-space: pre-wrap; word-wrap: normal">
@ApplicationScoped
<span class="code-keyword" style="color: #000091">public</span> class AppBean {
@Inject
<span class="code-keyword" style="color: #000091">private</span> <span class="code-object" style="color: #910091">String</span> string1;
@Inject
<span class="code-keyword" style="color: #000091">private</span> <span class="code-object" style="color: #910091">String</span> string2;
<span class="code-keyword" style="color: #000091">public</span> void print() {
<span class="code-object" style="color: #910091">System</span>.out.println(<span class="code-quote" style="color: #009100">"<span class="code-object" style="color: #910091; color: #009100">String</span> 1:"</span> + string1 + <span class="code-quote" style="color: #009100">" <span class="code-object" style="color: #910091; color: #009100">String</span> 2:"</span> + string2);
}
}
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<p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0 0">The problem seems to be that when the producer bean is created, an instance is pushed to <tt>CreationalContextImpl</tt> and ends up there in an <tt>incompleteInstances</tt> map. The producer bean is then created, the instance returned, and the producer method is called. This all happens correctly.</p>
<p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0 0">However, there is never any code anywhere that pops the instance from the <tt>incompleteInstances</tt> map, and the <tt>CreationalContextImpl</tt> that contains this map is re-used again and again, causing any bean that's created during injection to remain marked as an incomplete instance. So when the second field is injected, Weld encounters the producer bean in the <tt>incompleteInstances</tt> map and therefor assumes there must be a circular dependency, which of course isn't there.</p>
<p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0 0">A full reproducer can be found at <a href="https://github.com/arjantijms/weld-bogus-circular" class="external-link" rel="nofollow" style="color: #3b73af; text-decoration: none">https://github.com/arjantijms/weld-bogus-circular</a></p>
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