<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0" /> <base href="https://hibernate.atlassian.net" />
<title>Message Title</title>
</head>
<body class="jira" style="color: #333; font-family: Arial, sans-serif; font-size: 14px; line-height: 1.429">
<table id="background-table" cellpadding="0" cellspacing="0" width="100%" style="border-collapse: collapse; mso-table-lspace: 0pt; mso-table-rspace: 0pt; background-color: #f5f5f5; border-collapse: collapse; mso-table-lspace: 0pt; mso-table-rspace: 0pt">
<!-- header here -->
<tr>
<td id="header-pattern-container" style="padding: 0px; border-collapse: collapse; padding: 10px 20px">
<table id="header-pattern" cellspacing="0" cellpadding="0" border="0" style="border-collapse: collapse; mso-table-lspace: 0pt; mso-table-rspace: 0pt">
<tr>
<td id="header-avatar-image-container" valign="top" style="padding: 0px; border-collapse: collapse; vertical-align: top; width: 32px; padding-right: 8px"> <img id="header-avatar-image" class="image_fix" src="https://secure.gravatar.com/avatar/4370cc22dcc240125bf097909ddc30cf?d=mm&s=48" height="32" width="32" border="0" style="border-radius: 3px; vertical-align: top" />
</td>
<td id="header-text-container" valign="middle" style="padding: 0px; border-collapse: collapse; vertical-align: middle; font-family: Arial, sans-serif; font-size: 14px; line-height: 20px; mso-line-height-rule: exactly; mso-text-raise: 1px"> <a class="user-hover" rel="wrungel" id="email_wrungel" href="https://hibernate.atlassian.net/secure/ViewProfile.jspa?name=wrungel" style="color:#6c797f;; color: #3b73af; text-decoration: none">Maxim Frolov</a> <strong>created</strong> an issue
</td>
</tr>
</table>
</td>
</tr>
<tr>
<td id="email-content-container" style="padding: 0px; border-collapse: collapse; padding: 0 20px">
<table id="email-content-table" cellspacing="0" cellpadding="0" border="0" width="100%" style="border-collapse: collapse; mso-table-lspace: 0pt; mso-table-rspace: 0pt; border-spacing: 0; border-collapse: separate">
<tr>
<!-- there needs to be content in the cell for it to render in some clients -->
<td class="email-content-rounded-top mobile-expand" style="padding: 0px; border-collapse: collapse; color: #fff; padding: 0 15px 0 16px; height: 15px; background-color: #fff; border-left: 1px solid #ccc; border-top: 1px solid #ccc; border-right: 1px solid #ccc; border-bottom: 0; border-top-right-radius: 5px; border-top-left-radius: 5px; height: 10px; line-height: 10px; padding: 0 15px 0 16px; mso-line-height-rule: exactly">
</td>
</tr>
<tr>
<td class="email-content-main mobile-expand " style="padding: 0px; border-collapse: collapse; border-left: 1px solid #ccc; border-right: 1px solid #ccc; border-top: 0; border-bottom: 0; padding: 0 15px 0 16px; background-color: #fff">
<table class="page-title-pattern" cellspacing="0" cellpadding="0" border="0" width="100%" style="border-collapse: collapse; mso-table-lspace: 0pt; mso-table-rspace: 0pt">
<tr>
<td class="page-title-pattern-first-line " style="padding: 0px; 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-9460" style="color: #3b73af; text-decoration: none"><img src="cid:jira-generated-image-static-bug-714cc560-2791-4f6d-b9bf-37376f845f66" height="16" width="16" border="0" align="absmiddle" alt="Bug" style="vertical-align: text-bottom" /></a> <a href="https://hibernate.atlassian.net/browse/HHH-9460" style="color: #3b73af; text-decoration: none">HHH-9460</a>
</td>
</tr>
<tr>
<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-9460" style="color: #3b73af; text-decoration: none">Removing non-optional bidirectional @OneToOne association with cascade</a> </span>
</td>
</tr>
</table>
</td>
</tr>
<tr>
<td class="email-content-main mobile-expand wrapper-special-margin" style="padding: 0px; border-collapse: collapse; border-left: 1px solid #ccc; border-right: 1px solid #ccc; border-top: 0; border-bottom: 0; padding: 0 15px 0 16px; background-color: #fff; padding-top: 10px; padding-bottom: 5px">
<table class="keyvalue-table" style="border-collapse: collapse; mso-table-lspace: 0pt; mso-table-rspace: 0pt">
<tr>
<th style="color: #707070; font: normal 14px/20px Arial, sans-serif; text-align: left; vertical-align: top; padding: 2px 0">
Issue Type:
</th>
<td class="has-icon" style="padding: 0px; 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-bug-714cc560-2791-4f6d-b9bf-37376f845f66" height="16" width="16" border="0" align="absmiddle" alt="Bug" style="vertical-align: text-bottom" /> Bug
</td>
</tr>
<tr>
<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: 0px; border-collapse: collapse; font: normal 14px/20px Arial, sans-serif; padding: 2px 0 2px 5px; vertical-align: top">
4.3.6, 4.1.5
</td>
</tr>
<tr>
<th style="color: #707070; font: normal 14px/20px Arial, sans-serif; text-align: left; vertical-align: top; padding: 2px 0">
Assignee:
</th>
<td style="padding: 0px; border-collapse: collapse; font: normal 14px/20px Arial, sans-serif; padding: 2px 0 2px 5px; vertical-align: top">
Unassigned
</td>
</tr>
<tr>
<th style="color: #707070; font: normal 14px/20px Arial, sans-serif; text-align: left; vertical-align: top; padding: 2px 0">
Components:
</th>
<td style="padding: 0px; border-collapse: collapse; font: normal 14px/20px Arial, sans-serif; padding: 2px 0 2px 5px; vertical-align: top">
core
</td>
</tr>
<tr>
<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: 0px; border-collapse: collapse; font: normal 14px/20px Arial, sans-serif; padding: 2px 0 2px 5px; vertical-align: top">
28/Oct/2014 03:52 AM
</td>
</tr>
<tr>
<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: 0px; border-collapse: collapse; font: normal 14px/20px Arial, sans-serif; padding: 2px 0 2px 5px; vertical-align: top">
H2, Oracle
</td>
</tr>
<tr>
<th style="color: #707070; font: normal 14px/20px Arial, sans-serif; text-align: left; vertical-align: top; padding: 2px 0">
Priority:
</th>
<td class="has-icon" style="padding: 0px; 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-3742a1ee-ab2b-4704-ae8f-c280a2322715" height="16" width="16" border="0" align="absmiddle" alt="Major" style="vertical-align: text-bottom" /> Major
</td>
</tr>
<tr>
<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: 0px; border-collapse: collapse; font: normal 14px/20px Arial, sans-serif; padding: 2px 0 2px 5px; vertical-align: top"> <a class="user-hover" rel="wrungel" id="email_wrungel" href="https://hibernate.atlassian.net/secure/ViewProfile.jspa?name=wrungel" style="color:#6c797f;; color: #3b73af; text-decoration: none">Maxim Frolov</a>
</td>
</tr>
</table>
</td>
</tr>
<tr>
<td class="email-content-main mobile-expand issue-description-container" style="padding: 0px; border-collapse: collapse; border-left: 1px solid #ccc; border-right: 1px solid #ccc; border-top: 0; border-bottom: 0; padding: 0 15px 0 16px; background-color: #fff; padding-top: 5px; padding-bottom: 10px">
<table class="text-paragraph-pattern" cellspacing="0" cellpadding="0" border="0" width="100%" style="border-collapse: collapse; mso-table-lspace: 0pt; mso-table-rspace: 0pt; font-family: Arial, sans-serif; font-size: 14px; line-height: 20px; mso-line-height-rule: exactly; mso-text-raise: 2px">
<tr>
<td class="text-paragraph-pattern-container mobile-resize-text " style="padding: 0px; border-collapse: collapse; padding: 0 0 10px 0">
<p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0 0">Given a bidirectional @OneToOne relationship between Parent and Child Entity:</p>
<div class="code panel" style="border-style: solid;border-width: 1px;; border: 1px solid #ccc; background: #f5f5f5; font-size: 12px; line-height: 1.333; font-family: monospace; border: 1px solid #ccc; -moz-border-radius: 3px 3px 3px 3px; border-radius: 3px 3px 3px 3px; margin: 9px 0">
<div class="codeHeader panelHeader" style="border-bottom-width: 1px;border-bottom-style: solid;; border-bottom: 1px solid #ccc; padding: 9px 12px">
<b>Parent.java</b>
</div>
<div class="codeContent panelContent" style="padding: 9px 12px">
<pre class="code-java" style="margin: 10px 0 0 0; max-height: 30em; overflow: auto; white-space: pre-wrap; word-wrap: normal">
@Entity
<span class="code-keyword" style="color: #000091">public</span> class Parent {
@Id @GeneratedValue(strategy = GenerationType.IDENTITY)
@Column(unique = <span class="code-keyword" style="color: #000091">true</span>, nullable = <span class="code-keyword" style="color: #000091">false</span>)
<span class="code-keyword" style="color: #000091">private</span> <span class="code-object" style="color: #910091">Long</span> id;
@OneToOne(optional = <span class="code-keyword" style="color: #000091">false</span>, mappedBy = <span class="code-quote" style="color: #009100">"parent"</span>, cascade = ALL)
<span class="code-keyword" style="color: #000091">private</span> Child child;
...
}
</pre>
</div>
</div>
<div class="code panel" style="border-style: solid;border-width: 1px;; border: 1px solid #ccc; background: #f5f5f5; font-size: 12px; line-height: 1.333; font-family: monospace; border: 1px solid #ccc; -moz-border-radius: 3px 3px 3px 3px; border-radius: 3px 3px 3px 3px; margin: 9px 0">
<div class="codeHeader panelHeader" style="border-bottom-width: 1px;border-bottom-style: solid;; border-bottom: 1px solid #ccc; padding: 9px 12px">
<b>Child.java</b>
</div>
<div class="codeContent panelContent" style="padding: 9px 12px">
<pre class="code-java" style="margin: 10px 0 0 0; max-height: 30em; overflow: auto; white-space: pre-wrap; word-wrap: normal">
@Entity
<span class="code-keyword" style="color: #000091">public</span> class Child {
@Id @GeneratedValue(strategy = GenerationType.IDENTITY)
@Column(unique = <span class="code-keyword" style="color: #000091">true</span>, nullable = <span class="code-keyword" style="color: #000091">false</span>)
<span class="code-keyword" style="color: #000091">private</span> <span class="code-object" style="color: #910091">Long</span> id;
@OneToOne(optional=<span class="code-keyword" style="color: #000091">false</span>)
@JoinColumn(nullable=<span class="code-keyword" style="color: #000091">false</span>)
<span class="code-keyword" style="color: #000091">private</span> Parent parent;
...
}
</pre>
</div>
</div>
<p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0 0">The following test fails with org.hibernate.PropertyValueException: not-null property references a null or transient value: frol.Child.parent</p>
<div class="code panel" style="border-width: 1px;; border: 1px solid #ccc; background: #f5f5f5; font-size: 12px; line-height: 1.333; font-family: monospace; border: 1px solid #ccc; -moz-border-radius: 3px 3px 3px 3px; border-radius: 3px 3px 3px 3px; margin: 9px 0">
<div class="codeContent panelContent" style="padding: 9px 12px">
<pre class="code-java" style="margin: 10px 0 0 0; max-height: 30em; overflow: auto; white-space: pre-wrap; word-wrap: normal">
@Test
<span class="code-keyword" style="color: #000091">public</span> void deleteTest() {
EntityManagerFactory emf = Persistence.createEntityManagerFactory(<span class="code-quote" style="color: #009100">"onetone"</span>);
EntityManager em = emf.createEntityManager();
em.getTransaction().begin();
Parent a = <span class="code-keyword" style="color: #000091">new</span> Parent();
Child b = <span class="code-keyword" style="color: #000091">new</span> Child();
a.setChild(b);
b.setParent(a);
em.persist(a);
em.flush();
em.clear();
a = em.find(Parent.class, a.getId());
em.remove(a);
em.flush(); <span class="code-comment" style="color: #808080">// fails hier with: org.hibernate.PropertyValueException: not-<span class="code-keyword" style="color: #000091; color: #808080">null</span> property references a <span class="code-keyword" style="color: #000091; color: #808080">null</span> or <span class="code-keyword" style="color: #000091; color: #808080">transient</span> value : frol.Child.parent
</span>}
</pre>
</div>
</div>
<p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0 0">See also the <a href="http://stackoverflow.com/questions/26584474/removing-bidirectional-onetoone-association-with-cascade-on-one-side-and-non-op" class="external-link" rel="nofollow" style="color: #3b73af; text-decoration: none">test case on GitHub</a>.</p>
<p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0 0">I didn't find in JPA spec any restrictions on this kind of association.</p>
<p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0 0">Technically this kind of association can be persisted because the foreign key is on child side: first the persistence provider could delete the child and then its parent. But at runtime the deletion order seems to be different.</p>
<p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0 0">I found the following workarounds:</p>
<ul>
<li>
mark one end of the association as <em>optional</em>
</li>
<li>
make the association <em>unidirectional</em>
</li>
</ul>
<p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0 0">I use Hibernate 4.3.6.Final.</p>
<p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0 0">The problem also with Hibernate 4.1.5.Final but the exception is different. In this version Hibernate tries first to update the foreign key. Setting it to null causes ConsraintViolation because it is not nullable.</p>
</td>
</tr>
</table>
</td>
</tr>
<tr>
<td class="email-content-main mobile-expand " style="padding: 0px; border-collapse: collapse; border-left: 1px solid #ccc; border-right: 1px solid #ccc; border-top: 0; border-bottom: 0; padding: 0 15px 0 16px; background-color: #fff">
<table id="actions-pattern" cellspacing="0" cellpadding="0" border="0" width="100%" style="border-collapse: collapse; mso-table-lspace: 0pt; mso-table-rspace: 0pt; font-family: Arial, sans-serif; font-size: 14px; line-height: 20px; mso-line-height-rule: exactly; mso-text-raise: 1px">
<tr>
<td id="actions-pattern-container" valign="middle" style="padding: 0px; border-collapse: collapse; padding: 10px 0 10px 24px; vertical-align: middle; padding-left: 0">
<table align="left" style="border-collapse: collapse; mso-table-lspace: 0pt; mso-table-rspace: 0pt">
<tr>
<td class="actions-pattern-action-icon-container" style="padding: 0px; border-collapse: collapse; font-family: Arial, sans-serif; font-size: 14px; line-height: 20px; mso-line-height-rule: exactly; mso-text-raise: 0px; vertical-align: middle"> <a href="https://hibernate.atlassian.net/browse/HHH-9460#add-comment" target="_blank" title="Add Comment" style="color: #3b73af; text-decoration: none"> <img class="actions-pattern-action-icon-image" src="cid:jira-generated-image-static-comment-icon-88a39b92-643d-448d-9e1b-39799747d159" alt="Add Comment" title="Add Comment" height="16" width="16" border="0" style="vertical-align: middle" /> </a>
</td>
<td class="actions-pattern-action-text-container" style="padding: 0px; border-collapse: collapse; font-family: Arial, sans-serif; font-size: 14px; line-height: 20px; mso-line-height-rule: exactly; mso-text-raise: 4px; padding-left: 5px"> <a href="https://hibernate.atlassian.net/browse/HHH-9460#add-comment" target="_blank" title="Add Comment" style="color: #3b73af; text-decoration: none">Add Comment</a>
</td>
</tr>
</table>
</td>
</tr>
</table>
</td>
</tr>
<!-- there needs to be content in the cell for it to render in some clients -->
<tr>
<td class="email-content-rounded-bottom mobile-expand" style="padding: 0px; border-collapse: collapse; color: #fff; padding: 0 15px 0 16px; height: 5px; line-height: 5px; background-color: #fff; border-top: 0; border-left: 1px solid #ccc; border-bottom: 1px solid #ccc; border-right: 1px solid #ccc; border-bottom-right-radius: 5px; border-bottom-left-radius: 5px; mso-line-height-rule: exactly">
</td>
</tr>
</table>
</td>
</tr>
<tr>
<td id="footer-pattern" style="padding: 0px; border-collapse: collapse; padding: 12px 20px">
<table id="footer-pattern-container" cellspacing="0" cellpadding="0" border="0" style="border-collapse: collapse; mso-table-lspace: 0pt; mso-table-rspace: 0pt">
<tr>
<td id="footer-pattern-text" class="mobile-resize-text" width="100%" style="padding: 0px; border-collapse: collapse; color: #999; font-size: 12px; line-height: 18px; font-family: Arial, sans-serif; mso-line-height-rule: exactly; mso-text-raise: 2px">
This message was sent by Atlassian JIRA <span id="footer-build-information">(v6.4-OD-07-004#64005-<span title="29a0beaca7c693975974e1d5d9f869ecb60599fc" data-commit-id="29a0beaca7c693975974e1d5d9f869ecb60599fc}">sha1:29a0bea</span>)</span>
</td>
<td id="footer-pattern-logo-desktop-container" valign="top" style="padding: 0px; border-collapse: collapse; padding-left: 20px; vertical-align: top">
<table style="border-collapse: collapse; mso-table-lspace: 0pt; mso-table-rspace: 0pt">
<tr>
<td id="footer-pattern-logo-desktop-padding" style="padding: 0px; border-collapse: collapse; padding-top: 3px"> <img id="footer-pattern-logo-desktop" src="cid:jira-generated-image-static-footer-desktop-logo-73130935-1852-47b8-b710-d2271f81bfa6" alt="Atlassian logo" title="Atlassian logo" width="169" height="36" class="image_fix" />
</td>
</tr>
</table>
</td>
</tr>
</table>
</td>
</tr>
</table>
</body>
</html>