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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-11543" style="color: #3b73af; text-decoration: none"><img src="cid:jira-generated-image-avatar-c5964112-dc1e-43c8-9e28-0825db3e46fe" height="16" width="16" border="0" align="absmiddle" alt="Bug" style="vertical-align: text-bottom"></a> <a href="https://hibernate.atlassian.net/browse/HHH-11543" style="color: #3b73af; text-decoration: none">HHH-11543</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-11543" style="color: #3b73af; text-decoration: none">Sometimes hibernate doesn't created constraint for foreign key in ManyToOne relationship</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-c5964112-dc1e-43c8-9e28-0825db3e46fe" height="16" width="16" border="0" align="absmiddle" alt="Bug" style="vertical-align: text-bottom"> Bug </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"> 5.2.8 </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"> 03/Mar/2017 10:53 AM </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"> Windows 10, MS SQL 2016 </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">Priority:</th>
<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-ddeb465f-2f99-441d-9ebd-167093741b42" 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="ivan.fedorov" id="email_ivan.fedorov" href="https://hibernate.atlassian.net/secure/ViewProfile.jspa?name=ivan.fedorov" style="color:#6c797f;; color: #3b73af; text-decoration: none">Ivan Fedorov</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">I have next hierarchy of classes/entities</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">
@Entity
@Table(name = <span class="code-quote" style="color: #009100">"Users"</span>)
@Inheritance(strategy = InheritanceType.TABLE_PER_CLASS)
<span class="code-keyword" style="color: #000091">public</span> <span class="code-keyword" style="color: #000091">abstract</span> <span class="code-keyword" style="color: #000091">class </span>User <span class="code-keyword" style="color: #000091">implements</span> Serializable {
@Id
@Column(name = <span class="code-quote" style="color: #009100">"UserID"</span>, unique = <span class="code-keyword" style="color: #000091">true</span>, nullable = <span class="code-keyword" style="color: #000091">false</span>)
@GeneratedValue(strategy = GenerationType.AUTO)
<span class="code-keyword" style="color: #000091">private</span> <span class="code-object" style="color: #910091">Long</span> userId;
}
@Entity
@Table(name = <span class="code-quote" style="color: #009100">"Tasks"</span>)
<span class="code-keyword" style="color: #000091">public</span> <span class="code-keyword" style="color: #000091">class </span>Task <span class="code-keyword" style="color: #000091">implements</span> Serializable {
@Id
@GeneratedValue(strategy = GenerationType.AUTO)
@Column(name = <span class="code-quote" style="color: #009100">"TaskID"</span>, 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> taskId;
@OneToMany(mappedBy = <span class="code-quote" style="color: #009100">"task"</span>, fetch = FetchType.LAZY, cascade = CascadeType.ALL)
<span class="code-keyword" style="color: #000091">private</span> Set<UserTask> users;
}
@Entity
@Table(name = <span class="code-quote" style="color: #009100">"RegularUsers"</span>)
<span class="code-keyword" style="color: #000091">public</span> <span class="code-keyword" style="color: #000091">class </span>RegularUser <span class="code-keyword" style="color: #000091">extends</span> User {
@OneToMany(mappedBy = <span class="code-quote" style="color: #009100">"regularUser"</span>, fetch = FetchType.LAZY, cascade = CascadeType.ALL)
<span class="code-keyword" style="color: #000091">private</span> Set<UserTask> tasks;
}
@Entity
@Table(name = <span class="code-quote" style="color: #009100">"UserTask"</span>)
<span class="code-keyword" style="color: #000091">public</span> <span class="code-keyword" style="color: #000091">class </span>UserTask <span class="code-keyword" style="color: #000091">implements</span> Serializable {
@Id
@GeneratedValue(strategy = GenerationType.AUTO)
@Column(name = <span class="code-quote" style="color: #009100">"UserTaskID"</span>, 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> userTaskId;
@ManyToOne(cascade = CascadeType.ALL, fetch = FetchType.LAZY)
@JoinColumn(name = <span class="code-quote" style="color: #009100">"UserID_FK"</span>, referencedColumnName = <span class="code-quote" style="color: #009100">"UserID"</span>)
<span class="code-keyword" style="color: #000091">private</span> RegularUser regularUser;
@ManyToOne(cascade = CascadeType.ALL, fetch = FetchType.LAZY)
@JoinColumn(name = <span class="code-quote" style="color: #009100">"TaskID_FK"</span>, referencedColumnName = <span class="code-quote" style="color: #009100">"TaskID"</span>)
<span class="code-keyword" style="color: #000091">private</span> Task task;
}
</pre>
</div>
</div> <p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0">In code above I've skipped all the setters, getters and constructors.</p> <p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0">When I run application, hibernate creates tables with all required columns but doesn't create constraint for foreign key for next field in table UserTask.</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">
@JoinColumn(name = <span class="code-quote" style="color: #009100">"UserID_FK"</span>, referencedColumnName = <span class="code-quote" style="color: #009100">"UserID"</span>)
<span class="code-keyword" style="color: #000091">private</span> RegularUser regularUser;
</pre>
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</div> <p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0">Nevertheless constraint for the field "private Task task;" is being created successfully. <br> In the execution output I see</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">
Hibernate:
create table RegularUsers (
UserID numeric(19,0) not <span class="code-keyword" style="color: #000091">null</span>,
primary key (UserID)
)
Hibernate:
create table Tasks (
TaskID numeric(19,0) not <span class="code-keyword" style="color: #000091">null</span>,
primary key (TaskID)
)
Hibernate:
create table UserTask (
UserTaskID numeric(19,0) not <span class="code-keyword" style="color: #000091">null</span>,
UserID_FK numeric(19,0),
TaskID_FK numeric(19,0),
primary key (UserTaskID)
)
Hibernate:
alter table RegularUsers
add constraint UK_n68f0rf3bjbec7ril2q103g10 unique (UserID)
Hibernate:
alter table UserTask
add constraint FKiguctfwkdscbv8l409lnbcfna
foreign key (TaskID_FK)
references Tasks
</pre>
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