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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-10454" style="color: #3b73af; text-decoration: none">Re: session.persist fails for OneToOne relation with optional=false and generator is IDENTITY/AUTO</a> </span> </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: 10px 0 0 0; margin-top: 0">The problem with this solution is it requires changes the database schema. Currently POST is Parent table and POSTDETAILS is the child table. With this solution I have to make POSTDETAILS as parent and POST and child table. I would say it is a good workaround but not a solution.</p> <p style="margin: 10px 0 0 0">Regarding the comment "need to persist first a Post in order to obtain its id, but you cannot do this without a PostDetails because of the optional = false option;". IMO, the right solution would be, Hibernate should insert the POST record first and then the PostDetails record, similar to what it does when optional=true. That way we don't get any ConstraintViolationException.</p> <p style="margin: 10px 0 0 0">Also also aligns with OneToMany mapping where we can have optional=false/true and Hibernate inserts the parent first then the child records.</p> </td>
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