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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?atlOrigin=eyJpIjoiZTI4N2Q0M2Q2YjEzNGZiNTk3YzZiNjdkY2I4ZTg1MjMiLCJwIjoiaiJ9" style="color: #3b73af; text-decoration: none">Hibernate ORM</a> / <a href="https://hibernate.atlassian.net/browse/HHH-13129?atlOrigin=eyJpIjoiZTI4N2Q0M2Q2YjEzNGZiNTk3YzZiNjdkY2I4ZTg1MjMiLCJwIjoiaiJ9" style="color: #3b73af; text-decoration: none"><img src="cid:jira-generated-image-avatar-91dc97c1-41d7-46c3-a103-f86725fa24e0" height="16" width="16" border="0" align="absmiddle" alt="Bug" style="vertical-align: text-bottom"></a> <a href="https://hibernate.atlassian.net/browse/HHH-13129?atlOrigin=eyJpIjoiZTI4N2Q0M2Q2YjEzNGZiNTk3YzZiNjdkY2I4ZTg1MjMiLCJwIjoiaiJ9" style="color: #3b73af; text-decoration: none">HHH-13129</a> </td>
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<td style="vertical-align: top;; padding: 0; 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-13129?atlOrigin=eyJpIjoiZTI4N2Q0M2Q2YjEzNGZiNTk3YzZiNjdkY2I4ZTg1MjMiLCJwIjoiaiJ9" style="color: #3b73af; text-decoration: none">Cascaded merge fails for detached bytecode-enhanced entity with uninitialized ToOne</a> </span> </td>
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<td class="has-icon" style="padding: 0; 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-91dc97c1-41d7-46c3-a103-f86725fa24e0" 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: 0; border-collapse: collapse; font: normal 14px/20px Arial, sans-serif; padding: 2px 0 2px 5px; vertical-align: top"> 5.4.0.CR2 </td>
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<td style="padding: 0; 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: 0; 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: 0; border-collapse: collapse; font: normal 14px/20px Arial, sans-serif; padding: 2px 0 2px 5px; vertical-align: top"> 29/Nov/2018 09:10 AM </td>
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<td class="has-icon" style="padding: 0; 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-5b950912-8a6a-4a45-b6ee-26ef363d06b3" height="16" width="16" border="0" align="absmiddle" alt="Major" style="vertical-align: text-bottom"> Major </td>
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<td style="padding: 0; border-collapse: collapse; font: normal 14px/20px Arial, sans-serif; padding: 2px 0 2px 5px; vertical-align: top"> <a class="user-hover" rel="boleslaw.ziobrowski" id="email_boleslaw.ziobrowski" href="https://hibernate.atlassian.net/secure/ViewProfile.jspa?name=boleslaw.ziobrowski" style="color:#6c797f;; color: #3b73af; text-decoration: none">Bolek Ziobrowski</a> </td>
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<td class="text-paragraph-pattern-container mobile-resize-text " style="padding: 0; border-collapse: collapse; padding: 0 0 10px"> <p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0; margin-top: 0">Recently I enabled bytecode enhancement in an application using hibernate 5.2.17.Final (via maven plugin) .<br> The only option I use is <enableLazyInitialization>true</enableLazyInitialization> .<br> After that I noticed an unexpected LazyInitializationException in code that was working fine before the change .<br> Based on <a href="https://docs.jboss.org/hibernate/orm/5.3/userguide/html_single/chapters/pc/BytecodeEnhancement.html" class="external-link" rel="nofollow" style="color: #3b73af; text-decoration: none">https://docs.jboss.org/hibernate/orm/5.3/userguide/html_single/chapters/pc/BytecodeEnhancement.html</a> I added @LazyToOne(LazyToOneOption.NO_PROXY) on one ManyToOne relationship<br> This made lazy loading work but now if some code loads the entity without initializing this relationship, passes entity ouside of session scope and then tries to merge it in another session then it ends up with :<br> org.hibernate.LazyInitializationException: Unable to perform requested lazy initialization <span class="error">[classname]</span> - no session and settings disallow loading outside the Session<br> Which is a bit weird because the same code without @LazyToOne and bytecode instrumentation returns both entities .<br> Is this issue known/documented ?</p> <p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0">This lazy load exception is triggered by CascadeType.MERGE set in @ManyToOne annotation .</p> <p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0">I reproduced the issue with code fetched from latest master and will submit a pull request in a moment .</p> </td>
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