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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-11496" style="color: #3b73af; text-decoration: none"><img src="cid:jira-generated-image-avatar-a718eecf-26c0-4af7-b6c2-3e9ce655b338" height="16" width="16" border="0" align="absmiddle" alt="Bug" style="vertical-align: text-bottom"></a> <a href="https://hibernate.atlassian.net/browse/HHH-11496" style="color: #3b73af; text-decoration: none">HHH-11496</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-11496" style="color: #3b73af; text-decoration: none">Wrong insert order for OneToOne associations</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-a718eecf-26c0-4af7-b6c2-3e9ce655b338" 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"> 5.2.5, 5.2.7 </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"> 16/Feb/2017 09:35 AM </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">Environment:</th>
<td style="padding: 0; border-collapse: collapse; font: normal 14px/20px Arial, sans-serif; padding: 2px 0 2px 5px; vertical-align: top"> Wildfly 10.0 </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-19a7f7cc-e469-491e-b1c5-b299f7095be1" 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="ThomasGo" id="email_ThomasGo" href="https://hibernate.atlassian.net/secure/ViewProfile.jspa?name=ThomasGo" style="color:#6c797f;; color: #3b73af; text-decoration: none">Thomas Göttlich</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">Assume a simple bi-directional one-to-one relation A->B where B is the owning side of the association and A.b has an all cascade:</p>
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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">
@Entity
@Table( <span class="code-quote" style="color: #009100">"table_a"</span>)
<span class="code-keyword" style="color: #000091">class </span>A {
@Id
@Column( name = <span class="code-quote" style="color: #009100">"id"</span>)
<span class="code-keyword" style="color: #000091">private</span> <span class="code-object" style="color: #910091">int</span> id;
@OneToOne(mappedBy = <span class="code-quote" style="color: #009100">"a"</span>, cascade = CascadeType.ALL)
<span class="code-keyword" style="color: #000091">private</span> B b;
}
@Entity
@Table( <span class="code-quote" style="color: #009100">"table_b"</span>)
<span class="code-keyword" style="color: #000091">class </span>B {
@Id
@OneToOne
@JoinColumn( name = <span class="code-quote" style="color: #009100">"a_id"</span> )
<span class="code-keyword" style="color: #000091">private</span> A a;
}
</pre>
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</div> <p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0">We then create a new instance like this:</p>
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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">
A a = <span class="code-keyword" style="color: #000091">new</span> A();
a.setB( <span class="code-keyword" style="color: #000091">new</span> B() );
a.getB().setA( a );
em.persist( a ) ;
</pre>
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</div> <p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0">With hibernate.order_inserts = false this works as intended, i.e. first A is persisted and then B due to the cascade.</p> <p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0">However, with hibernate.order_inserts = true this breaks because the insert actions are incorrectly reordered. The problem seems to be in <em>org.hibernate.engine.spi.ActionQueue.InsertActionSorter# addParentChildEntityNames(AbstractEntityInsertAction, BatchIdentifier)</em> where there's this piece of code:</p>
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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">
<span class="code-keyword" style="color: #000091">if</span> ( type.isEntityType() && value != <span class="code-keyword" style="color: #000091">null</span> ) {
EntityType entityType = (EntityType) type;
<span class="code-object" style="color: #910091">String</span> entityName = entityType.getName();
batchIdentifier.getParentEntityNames().add( entityName );
}
</pre>
</div>
</div> <p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0">Here the problem is that the type for <em>A.b</em> is OneToOne which is an EntityType and hence B is assumed to be the parent of A. In a sense this is true since B is the owning side of the association but in terms of insert ordering A is the parent of B, i.e. A must be inserted first (as will be done without reordering).</p> <p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0">One way to fix this might be to check for OneToOneType and then for the value of foreignKeyType.</p> </td>
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