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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=eyJpIjoiMGE3OTFhMWVjYTIwNGI5NmIzNGVhM2IwYWY5YzE5NmQiLCJwIjoiaiJ9" style="color: #3b73af; text-decoration: none">Hibernate ORM</a> / <a href="https://hibernate.atlassian.net/browse/HHH-14054?atlOrigin=eyJpIjoiMGE3OTFhMWVjYTIwNGI5NmIzNGVhM2IwYWY5YzE5NmQiLCJwIjoiaiJ9" style="color: #3b73af; text-decoration: none"><img src="cid:jira-generated-image-avatar-376a361b-e6f2-40eb-a0c9-0a1414e13de1" height="16" width="16" border="0" align="absmiddle" alt="Bug" style="vertical-align: text-bottom"></a> <a href="https://hibernate.atlassian.net/browse/HHH-14054?atlOrigin=eyJpIjoiMGE3OTFhMWVjYTIwNGI5NmIzNGVhM2IwYWY5YzE5NmQiLCJwIjoiaiJ9" style="color: #3b73af; text-decoration: none">HHH-14054</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-14054?atlOrigin=eyJpIjoiMGE3OTFhMWVjYTIwNGI5NmIzNGVhM2IwYWY5YzE5NmQiLCJwIjoiaiJ9" style="color: #3b73af; text-decoration: none">Hibernate insert/update ordering wrt unique constraints</a> </span> </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="koen.serneels" style="color:#6c797f;; color: #3b73af; text-decoration: none" id="email_koen.serneels" href="https://hibernate.atlassian.net/secure/ViewProfile.jspa?accountId=557058%3A956c77bd-dde9-4e6d-aafd-30082b747b74"> Koen Serneels </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"> <span class="diffcontext">Hi. In the example created for this issue (please see: [https://github.com/koen-serneels/hibernate-uc-violation|https://github.com/koen-serneels/hibernate-uc-violation]) is an entity with a single property ‘value’ and unique constraint. Initially there is an existing instance with it’s property ‘value’ equal to ‘val1’. When we now do following within the same transaction:<br><br>* change the value on the existing entity from “val1” to “val2”<br>* add a new entity with “val1”<br><br>We get a ConstraintViolationException because Hibernate is executing the insert before the update. Now, is this actually expected knowing that Hibernate knows about the unique constraint and that it would make more sense to perform the insert after the update or is this a bug</span> <span class="diffaddedchars" style="background-color:#ddfade;">/missing feature</span> <span class="diffcontext">? <br><br>Btw; I posted this first on the forum ([https://discourse.hibernate.org/t/hibernate-insert-update-ordering-wrt-unique-constraints/4201|https://discourse.hibernate.org/t/hibernate-insert-update-ordering-wrt-unique-constraints/4201]), but in absence of any response I started thinking this might be a bug/feature. Thanks\!</span> </td>
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