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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://hibernate.atlassian.net/browse/HHH" style="color: #3b73af; text-decoration: none">Hibernate ORM</a> / <a href="https://hibernate.atlassian.net/browse/HHH-10591" style="color: #3b73af; text-decoration: none"><img src="cid:jira-generated-image-avatar-39c88932-9f60-40bb-a30a-dd070de64e43" height="16" width="16" border="0" align="absmiddle" alt="Bug" style="vertical-align: text-bottom"></a> <a href="https://hibernate.atlassian.net/browse/HHH-10591" style="color: #3b73af; text-decoration: none">HHH-10591</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://hibernate.atlassian.net/browse/HHH-10591" style="color: #3b73af; text-decoration: none">Custom Scanner throws ClassCast when loaded from TempClassLoader</a> </span> </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">Issue Type:</th>
<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-39c88932-9f60-40bb-a30a-dd070de64e43" 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"> 5.1.0, 5.1.1 </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">Components:</th>
<td style="padding: 0px; border-collapse: collapse; font: normal 14px/20px Arial, sans-serif; padding: 2px 0 2px 5px; vertical-align: top"> hibernate-core </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"> 05/Mar/2016 07:58 AM </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-major-8c2a932a-d28f-4370-9f07-0866d8d15a87" height="16" width="16" border="0" align="absmiddle" alt="Major" style="vertical-align: text-bottom"> Major </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">Reporter:</th>
<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="janarioliver" id="email_janarioliver" href="https://hibernate.atlassian.net/secure/ViewProfile.jspa?name=janarioliver" style="color:#6c797f;; color: #3b73af; text-decoration: none">Janario Oliveira</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">We have built an internal Scanner to add classes from external dependencies based on a meta file.</p> <p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0 0">This used to work on Hibernate 4.3.8.Final but we are updating to the latest version (5.1.0.Final) and it throws an exception in WildFly because of TempClassLoader.</p> <p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0 0">Caused by: java.lang.ClassCastException: pkg.org.hibernate.jpa.test.packaging.temp_classloader.CustomAutoScanner cannot be cast to org.hibernate.boot.archive.scan.spi.Scanner<br> at org.hibernate.boot.model.process.internal.ScanningCoordinator.buildScanner(ScanningCoordinator.java:165)<br> ... 20 more</p> <p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0 0">I've create the scenario at my fork <a href="https://github.com/Janario/hibernate-orm/commit/6dda1fd07ddd5346b19c7182d991b8e36a11ff86" class="external-link" rel="nofollow" style="color: #3b73af; text-decoration: none">https://github.com/Janario/hibernate-orm/commit/6dda1fd07ddd5346b19c7182d991b8e36a11ff86</a><br> Custom scanner <a href="https://github.com/Janario/hibernate-orm/commit/6dda1fd07ddd5346b19c7182d991b8e36a11ff86#diff-ce09751ef9dbaa28b0acffe22efd376fR20" class="external-link" rel="nofollow" style="color: #3b73af; text-decoration: none">https://github.com/Janario/hibernate-orm/commit/6dda1fd07ddd5346b19c7182d991b8e36a11ff86#diff-ce09751ef9dbaa28b0acffe22efd376fR20</a></p> <p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0 0">TempClassLoader (similar to wildfly-jpa <a href="https://github.com/wildfly/wildfly/blob/master/jpa/subsystem/src/main/java/org/jboss/as/jpa/classloader/TempClassLoader.java#L64" class="external-link" rel="nofollow" style="color: #3b73af; text-decoration: none">https://github.com/wildfly/wildfly/blob/master/jpa/subsystem/src/main/java/org/jboss/as/jpa/classloader/TempClassLoader.java#L64</a>)<br> <a href="https://github.com/Janario/hibernate-orm/commit/6dda1fd07ddd5346b19c7182d991b8e36a11ff86#diff-5e427fcaa86edb0e68fc03e4cfadff1fR10" class="external-link" rel="nofollow" style="color: #3b73af; text-decoration: none">https://github.com/Janario/hibernate-orm/commit/6dda1fd07ddd5346b19c7182d991b8e36a11ff86#diff-5e427fcaa86edb0e68fc03e4cfadff1fR10</a></p> <p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0 0">As solution I have removed the tempClassLoader once it would fail with any instance returned. <br> Also the Hibernate Scanner doesn't load the entities classes, it reads as binary with javassist.<br> <a href="https://github.com/Janario/hibernate-orm/commit/67732206b25ba2ededf9466820e1db6b9193e53d#diff-2f4dcf938d3a977a4f6d23232a16d7e7L68" class="external-link" rel="nofollow" style="color: #3b73af; text-decoration: none">https://github.com/Janario/hibernate-orm/commit/67732206b25ba2ededf9466820e1db6b9193e53d#diff-2f4dcf938d3a977a4f6d23232a16d7e7L68</a></p> </td>
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