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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-9345" style="color: #3b73af; text-decoration: none"><img src="cid:jira-generated-image-static-bug-f4bc775d-60af-4542-b7f8-9d19cca2761d" height="16" width="16" border="0" align="absmiddle" alt="Bug" style="vertical-align: text-bottom" /></a> <a href="https://hibernate.atlassian.net/browse/HHH-9345" style="color: #3b73af; text-decoration: none">HHH-9345</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-9345" style="color: #3b73af; text-decoration: none">Nested "treat (x as Type)" aren’t supported</a> </span>
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Affects Versions:
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4.3.6
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Unassigned
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query-hql
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16/Aug/2014 23:19 PM
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hibernate core jpa21 HQL
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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="Etienne Miret" id="email_Etienne Miret" href="https://hibernate.atlassian.net/secure/ViewProfile.jspa?name=Etienne+Miret" style="color:#6c797f;; color: #3b73af; text-decoration: none">Etienne Miret</a>
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<p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0 0">Section 4.4.4.1 of the JPA 2.1 specification (which gives the syntax for path expressions) explicitly allows nested "treat as" statements, yet they are not currently supported by Hibernate. The following test case throws a QuerySyntaxExpression:</p>
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<b>TreatTest.java</b>
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<pre class="code-java" 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">public</span> class TreatTest <span class="code-keyword" style="color: #000091">extends</span> BaseCoreFunctionalTestCase {
@Override
<span class="code-keyword" style="color: #000091">public</span> <span class="code-object" style="color: #910091">String</span>[] getMappings() {
<span class="code-keyword" style="color: #000091">return</span> <span class="code-keyword" style="color: #000091">new</span> <span class="code-object" style="color: #910091">String</span>[] { <span class="code-quote" style="color: #009100">"hql/Animal.hbm.xml"</span> };
}
@Test
<span class="code-keyword" style="color: #000091">public</span> void nestedTreatTest() {
<span class="code-keyword" style="color: #000091">final</span> Session s = openSession();
s.createQuery( <span class="code-quote" style="color: #009100">"from Animal h where treat ( treat ( h as Human ).father as Human ).pets is empty"</span> );
}
}
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<p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0 0">The stacktrace of the thrown expression is:</p>
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<pre class="code-java" style="margin: 10px 0 0 0; max-height: 30em; overflow: auto; white-space: pre-wrap; word-wrap: normal">
org.hibernate.hql.internal.ast.QuerySyntaxException: expecting <span class="code-quote" style="color: #009100">"as"</span>, found '(' near line 1, column 58 [from org.hibernate.test.hql.Animal h where treat ( treat ( h as Human ).father as Human ).pets is empty]
        at org.hibernate.hql.internal.ast.QuerySyntaxException.convert(QuerySyntaxException.java:91)
        at org.hibernate.hql.internal.ast.ErrorCounter.throwQueryException(ErrorCounter.java:109)
        at org.hibernate.hql.internal.ast.QueryTranslatorImpl.parse(QueryTranslatorImpl.java:304)
        at org.hibernate.hql.internal.ast.QueryTranslatorImpl.doCompile(QueryTranslatorImpl.java:203)
        at org.hibernate.hql.internal.ast.QueryTranslatorImpl.compile(QueryTranslatorImpl.java:158)
        at org.hibernate.engine.query.spi.HQLQueryPlan.<init>(HQLQueryPlan.java:126)
        at org.hibernate.engine.query.spi.HQLQueryPlan.<init>(HQLQueryPlan.java:88)
        at org.hibernate.engine.query.spi.QueryPlanCache.getHQLQueryPlan(QueryPlanCache.java:167)
        at org.hibernate.internal.AbstractSessionImpl.getHQLQueryPlan(AbstractSessionImpl.java:301)
        at org.hibernate.internal.AbstractSessionImpl.createQuery(AbstractSessionImpl.java:239)
        at org.hibernate.internal.SessionImpl.createQuery(SessionImpl.java:1800)
        at org.hibernate.test.hql.TreatTest.whereTreatTest(TreatTest.java:95)
</pre>
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<p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0 0">My pull request for <a href="https://hibernate.atlassian.net/browse/HHH-9342" title="HQL "x member of treat(y as Type).collections" fails to parse" class="issue-link" data-issue-key="HHH-9342" style="color: #3b73af; text-decoration: none">HHH-9342</a> added support for nested "treat as" just after a "member of" construction, but it is currently the only place where nested treat as are supported. This new bug report is in order to support them everywhere where they should be allowed.</p>
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