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                                        <table class="page-title-pattern" cellspacing="0" cellpadding="0" border="0" width="100%" style="border-collapse: collapse; mso-table-lspace: 0; mso-table-rspace: 0"> 
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                                                    <td class="page-title-pattern-first-line " style="padding: 0; 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-11426" style="color: #3b73af; text-decoration: none"><img src="cid:jira-generated-image-avatar-6a3b80ab-1e1a-425a-843c-ddc5eebb38e8" height="16" width="16" border="0" align="absmiddle" alt="Bug" style="vertical-align: text-bottom"></a> <a href="https://hibernate.atlassian.net/browse/HHH-11426" style="color: #3b73af; text-decoration: none">HHH-11426</a> </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">Change By:</th> 
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                                                    <th style="color: #707070; font: normal 14px/20px Arial, sans-serif; text-align: left; vertical-align: top; padding: 2px 0">Worked in:</th> 
                                                    <td style="padding: 0; border-collapse: collapse; font: normal 14px/20px Arial, sans-serif; padding: 2px 0 2px 5px; vertical-align: top"> <span class="diffcontext">5.2.</span> <span class="diffremovedchars" style="background-color:#ffe7e7;text-decoration:line-through;">2</span> <span class="diffaddedchars" style="background-color:#ddfade;">4</span> <span class="diffcontext">, 5.2.3, 5.2.</span> <span class="diffremovedchars" style="background-color:#ffe7e7;text-decoration:line-through;">4</span> <span class="diffaddedchars" style="background-color:#ddfade;">2</span> </td> 
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                                                    <td class="text-paragraph-pattern-container mobile-resize-text " style="padding: 0; border-collapse: collapse; padding: 0 0 10px"> <span class="diffcontext">The exception occurs on entityManagerFactory.getPersistenceUnitUtil().getIdentifier(entity), passing a detached and enhanced entity as argument. When I disable hibernate-enhance-maven-plugin or back to 5.2.2, the exception don't happens.<br><br>Stack Trace:<br><br>{quote}Exception in thread "pool-1-thread-1" java.lang.NullPointerException<br> at org.hibernate.jpa.internal.PersistenceUnitUtilImpl.getIdentifier(PersistenceUnitUtilImpl.java:74)<br> at br.com.flextotal.ServerInitListener.serverInit(Unknown Source)<br> at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)<br> at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)<br> at java.lang.Thread.run(Thread.java:745){quote}<br><br>I created a test case in this fork: https://github.com/edallagnol/hibernate-test-case-templates/tree/master/orm/hibernate-orm-5/src/</span> <span class="diffaddedchars" style="background-color:#ddfade;"><br><br>Edit: I can't test in 5.2.5, because of this exception: https://hibernate.atlassian.net/browse/HHH-11322</span> </td> 
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