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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-9284" style="color: #3b73af; text-decoration: none"><img src="cid:jira-generated-image-static-bug-8df1c239-dc9f-4c96-83df-3a07f3ae2fae" height="16" width="16" border="0" align="absmiddle" alt="Bug" style="vertical-align: text-bottom" /></a> <a href="https://hibernate.atlassian.net/browse/HHH-9284" style="color: #3b73af; text-decoration: none">HHH-9284</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-9284" style="color: #3b73af; text-decoration: none">Joined subclass query is invalidly inner joining when it should outer join </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-8df1c239-dc9f-4c96-83df-3a07f3ae2fae" 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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4.3.5, 4.3.0.Final
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Assignee:
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Unassigned
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Components:
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entity-manager
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Created:
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10/Jul/2014 13:18 PM
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Environment:
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MS SQL Server <br /> Hibernate versions 4.3.0 - 4.3.5 all exhibit this behavior; 4.2.14 is fine.
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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="matthauck" id="email_matthauck" href="https://hibernate.atlassian.net/secure/ViewProfile.jspa?name=matthauck" style="color:#6c797f;; color: #3b73af; text-decoration: none">Matt Hauck</a>
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<p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0 0">I discovered the following problem trying to upgrade from hibernate 3.5 to 4.3. For background, we currently have a database schema that has a family of tables that use the joined subclass inheritance model. </p>
<p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0 0">The structure more or less goes like this:<br /> SuperParent has two children: `Custom` and `Ldap`. Let's ignore `Ldap`. `Custom` has a child named `Role`, which has a `@ManyToOne(nullable=false)` association with `Permissions`. </p>
<p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0 0">The problem is this: When I call `entityManager.find(Custom.class, id)`, it is over-zealously joining the permissions table with an `inner join`, which behavior begins at 4.3.0.Final. When I revert back one version to 4.2.14, it properly creates an `outer join` on the permissions table. </p>
<p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0 0">I expect the reason behind the inner join is the tightness of relationship with `Role` since it is non-nullable? But since what I am looking for is actually a `Custom` and not a `Role`, and so there will never be any permissions references to it, and so the lookup will always fail. </p>
<p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0 0">PS. My workaround for now is to only upgrade to 4.2.14, and additionally to hopefully undo some of this unnecessary hierarchy. </p>
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