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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.redhat.com/browse/WELD" style="color: #3b73af; text-decoration: none">Weld</a> / <a href="https://issues.redhat.com/browse/WELD-2614" style="color: #3b73af; text-decoration: none"><img src="cid:jira-generated-image-avatar-3332ad49-cf70-470a-8c55-c42607bcc058" height="16" width="16" border="0" align="absmiddle" alt="Bug" style="vertical-align: text-bottom"></a> <a href="https://issues.redhat.com/browse/WELD-2614" style="color: #3b73af; text-decoration: none">WELD-2614</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.redhat.com/browse/WELD-2614" style="color: #3b73af; text-decoration: none">Beans representing array types do not include Cloneable and Serializable in their type closures</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-3332ad49-cf70-470a-8c55-c42607bcc058" height="16" width="16" border="0" align="absmiddle" alt="Bug" style="vertical-align: text-bottom"> Bug </td>
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<th style="color: #707070; font: normal 14px/20px Arial, sans-serif; text-align: left; vertical-align: top; padding: 2px 0">Affects Versions:</th>
<td style="padding: 0px; border-collapse: collapse; font: normal 14px/20px Arial, sans-serif; padding: 2px 0 2px 5px; vertical-align: top"> 3.1.3.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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<th style="color: #707070; font: normal 14px/20px Arial, sans-serif; text-align: left; vertical-align: top; padding: 2px 0">Created:</th>
<td style="padding: 0px; border-collapse: collapse; font: normal 14px/20px Arial, sans-serif; padding: 2px 0 2px 5px; vertical-align: top"> 01/Mar/20 1:23 PM </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-static-minor-dde3efad-b958-42a0-9e09-2103f0f0b774" height="16" width="16" border="0" align="absmiddle" alt="Minor" style="vertical-align: text-bottom"> Minor </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="ljnelson" id="email_ljnelson" href="https://issues.redhat.com/secure/ViewProfile.jspa?name=ljnelson" style="color:#0066cc;; color: #3b73af; text-decoration: none">Laird Nelson</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">I am not sure whether this is a bug or a feature enhancement.</p> <p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0 0">When a bean of any kind reports its type closure, it ends up doing so using its <tt>getTypeClosure()</tt> method. The CDI specification says somewhere in section 11.4:</p> <p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0 0">"<tt>getTypeClosure()</tt> returns all types <b>to which the base type should be considered assignable</b>."</p> <p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0 0">Note the very careful wording here: it doesn't mention superclasses or interfaces, just assignability.</p> <p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0 0">Now consider an injection point like this:</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">
@Inject
<span class="code-keyword" style="color: #000091">private</span> <span class="code-object" style="color: #910091">Cloneable</span> foo;
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</div> <p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0 0">And a producer method like this:</p>
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@Produces
<span class="code-keyword" style="color: #000091">private</span> <span class="code-keyword" style="color: #000091">static</span> <span class="code-object" style="color: #910091">Integer</span>[] makeIntegers() {
<span class="code-keyword" style="color: #000091">return</span> <span class="code-keyword" style="color: #000091">new</span> <span class="code-object" style="color: #910091">Integer</span>[]{42};
}
</pre>
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</div> <p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0 0"><b>Leaving aside whether this would be ambiguous</b> (this would be a truly stupid injection point), should the producer method's return type (<tt>Integer[].class</tt>, one of its bean types) be considered assignable to an injection point of type <tt>Cloneable</tt>?</p> <p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0 0">Or, more precisely, should the return value of the producer method's <tt>Bean</tt> implementation's <tt>getTypeClosure()</tt> method include <tt>Cloneable</tt> (and <tt>Serializable</tt>)?</p> <p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0 0">I think it should.</p> <p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0 0">An array type does not have <tt>Cloneable</tt> in its superclass hierarchy (obviously) or its implemented interfaces, but <tt>Cloneable.class.isAssignableFrom(Integer[].class)</tt> returns <tt>true</tt> because the JLS <a href="https://docs.oracle.com/javase/specs/jls/se13/html/jls-4.html#jls-4.10.3" class="external-link" rel="nofollow" style="color: #3b73af; text-decoration: none">says it must</a>.</p> </td>
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