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<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-9594" style="color: #3b73af; text-decoration: none"><img src="cid:jira-generated-image-static-bug-9bd5ecbb-f77d-4483-97a2-61ce0c339cd9" height="16" width="16" border="0" align="absmiddle" alt="Bug" style="vertical-align: text-bottom" /></a> <a href="https://hibernate.atlassian.net/browse/HHH-9594" style="color: #3b73af; text-decoration: none">HHH-9594</a>
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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-9594" style="color: #3b73af; text-decoration: none">Inappropriate INNER JOIN on query with inheritance relations</a> </span>
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Issue Type:
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<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-9bd5ecbb-f77d-4483-97a2-61ce0c339cd9" height="16" width="16" border="0" align="absmiddle" alt="Bug" style="vertical-align: text-bottom" /> Bug
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Affects Versions:
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4.3.8
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Assignee:
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Unassigned
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Components:
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core, entity-manager
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Created:
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04/Feb/2015 02:36 AM
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Environment:
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linux, postgreSQL 9.3
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Labels:
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jpa21 HQL inheritance join
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Priority:
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Reporter:
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<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="jmvivo" id="email_jmvivo" href="https://hibernate.atlassian.net/secure/ViewProfile.jspa?name=jmvivo" style="color:#6c797f;; color: #3b73af; text-decoration: none">Jose Manuel Vivó Arnal</a>
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<p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0 0">I've declared model like this:</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">
@Entity
@Inheritance(strategy = InheritanceType.JOINED)
<span class="code-keyword" style="color: #000091">public</span> <span class="code-keyword" style="color: #000091">abstract</span> class Party {
....
....
}
@Entity
<span class="code-keyword" style="color: #000091">public</span> class Person <span class="code-keyword" style="color: #000091">extends</span> Party {
/**
*/
@NotNull
<span class="code-keyword" style="color: #000091">private</span> <span class="code-object" style="color: #910091">String</span> firstName;
/**
*/
@NotNull
<span class="code-keyword" style="color: #000091">private</span> <span class="code-object" style="color: #910091">String</span> lastName;
....
....
}
@Entity
<span class="code-keyword" style="color: #000091">public</span> class Organization <span class="code-keyword" style="color: #000091">extends</span> Party {
/**
*/
@NotEmpty
@NotNull
<span class="code-keyword" style="color: #000091">private</span> <span class="code-object" style="color: #910091">String</span> name;
....
....
}
@Entity
<span class="code-keyword" style="color: #000091">public</span> class WorkOrder {
....
....
/**
*/
@NotNull
@ManyToOne(fetch = FetchType.LAZY)
<span class="code-keyword" style="color: #000091">private</span> Party assignedTo;
}
</pre>
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<p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0 0">When I try to create a HQL query like this:</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-sql" style="margin: 10px 0 0 0; max-height: 30em; overflow: auto; white-space: pre-wrap; word-wrap: normal">
<span class="code-keyword" style="color: #000091">select</span> distinct entity
<span class="code-keyword" style="color: #000091">from</span> WorkOrder entity
....
....
left join treat(entity.assignedTo as Person) as assignedToPerson
left join treat(entity.assignedTo as Organization) as assignedToOrganization
<span class="code-keyword" style="color: #000091">where</span> .....
lower(assignedToPerson.firstName) like :1 or lower(assignedToPerson.lastName) like :1 or lower(assignedToOrganization.name) like :1
</pre>
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<p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0 0">it's translate to:</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-sql" style="margin: 10px 0 0 0; max-height: 30em; overflow: auto; white-space: pre-wrap; word-wrap: normal">
<span class="code-keyword" style="color: #000091">select</span>
distinct workorder0_.id as col_0_0_,
workorder0_.assigned_to as col_1_0_,
party6_.id as id1_66_,
....
....
party6_2_.name as name4_64_,
case when party6_1_.id is not null then 1 when party6_2_.id is not null then 2 when party6_.id is not null then 0 end as clazz_
<span class="code-keyword" style="color: #000091">from</span> public.work_order workorder0_ left outer
.....
....
left outer join public.party party6_ on workorder0_.assigned_to=party6_.id
inner join public.person party6_1_ on party6_.id=party6_1_.id
inner join public.organization party6_2_ on party6_.id=party6_2_.id
<span class="code-keyword" style="color: #000091">where</span> ....
or lower(party6_1_.first_name) like ?1
or lower(party6_1_.last_name) like ?1
or lower(party6_2_.name) like ?1
</pre>
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<p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0 0">As a <b>one <em>WorkOrder.assignedTo</em> can't be on both type at same time</b> I <em>always</em> get 0 records.</p>
<p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0 0">If I <b>change <em>inner join</em> of inheritance tables to <em>left join</em></b> I get the right result:</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-sql" style="margin: 10px 0 0 0; max-height: 30em; overflow: auto; white-space: pre-wrap; word-wrap: normal">
<span class="code-keyword" style="color: #000091">select</span>
distinct workorder0_.id as col_0_0_,
workorder0_.assigned_to as col_1_0_,
party6_.id as id1_66_,
....
....
party6_2_.name as name4_64_,
case when party6_1_.id is not null then 1 when party6_2_.id is not null then 2 when party6_.id is not null then 0 end as clazz_
<span class="code-keyword" style="color: #000091">from</span> public.work_order workorder0_ left outer
.....
....
left outer join public.party party6_ on workorder0_.assigned_to=party6_.id
left join public.person party6_1_ on party6_.id=party6_1_.id
left join public.organization party6_2_ on party6_.id=party6_2_.id
<span class="code-keyword" style="color: #000091">where</span> ....
or lower(party6_1_.first_name) like ?1
or lower(party6_1_.last_name) like ?1
or lower(party6_2_.name) like ?1
</pre>
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