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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> 
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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> 
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                                                    <th style="color: #707070; font: normal 14px/20px Arial, sans-serif; text-align: left; vertical-align: top; padding: 2px 0">Assignee:</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">Attachments:</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">Components:</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">Created:</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">Reporter:</th> 
                                                    <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="dleszyk" id="email_dleszyk" href="https://hibernate.atlassian.net/secure/ViewProfile.jspa?name=dleszyk" style="color:#6c797f;; color: #3b73af; text-decoration: none">Dominik Łeszyk</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">In an unidirectional one-to-many relation, with a join column on many side, Hibernate seems to forget about nulling foreign keys when removing object on 'one' side if entities are instrumented. </p> <p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0">In my test-case (please see it attached) there is Garage entity keeping a set of Cars entities. During removal (without bytecode enhancement) of Garage entity, Hibernate issues the following statements:</p> 
                                                        <div class="code panel" style="border-width: 1px;; border: 1px solid #cccccc; background: #f5f5f5; font-size: 12px; line-height: 1.333; font-family: monospace; border: 1px solid #cccccc; -moz-border-radius: 3px; border-radius: 3px; margin: 9px 0">
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                                                                <pre class="code-java" style="margin: 10px 0 0; margin-top: 0; max-height: 30em; overflow: auto; white-space: pre-wrap; word-wrap: normal">
Hibernate:
    update
        Car
    set
        GARAGE_ID=<span class="code-keyword" style="color: #000091">null</span>
    where
        GARAGE_ID=?
Hibernate:
    delete
    from
        Garage
    where
        id=?
</pre> 
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                                                        </div> <p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0">However when entities are instrumented using 'enableLazyInitialization' mode, the first SQL statement is not generated which leads to constraint violation when the delete statement is executed.</p> <p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0">In order to run my test-case with bytecode enhancement (which fails), please issue the following command:</p> 
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                                                            <div class="codeContent panelContent" style="padding: 9px 12px"> 
                                                                <pre class="code-java" style="margin: 10px 0 0; margin-top: 0; max-height: 30em; overflow: auto; white-space: pre-wrap; word-wrap: normal">
mvn clean install -P enhancement
</pre> 
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                                                        </div> <p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0">A build run without 'enhancement' profile works correctly.</p> <p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0">Please note that this happens only when 'enableLazyInitialization' mode is on; other modes doesn't cause this issue.</p> </td> 
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