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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-10310" style="color: #3b73af; text-decoration: none"><img src="cid:jira-generated-image-avatar-4d8310b9-7603-40a6-b281-b2b80dd0d549" height="16" width="16" border="0" align="absmiddle" alt="Bug" style="vertical-align: text-bottom" /></a> <a href="https://hibernate.atlassian.net/browse/HHH-10310" style="color: #3b73af; text-decoration: none">HHH-10310</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-10310" style="color: #3b73af; text-decoration: none">Criteria API generates invalid JPQL for condition based on count subquery</a> </span>
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Change By:
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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="abstratt" id="email_abstratt" href="https://hibernate.atlassian.net/secure/ViewProfile.jspa?name=abstratt" style="color:#6c797f;; color: #3b73af; text-decoration: none">Rafael Chaves</a>
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<td class="text-paragraph-pattern-container mobile-resize-text " style="padding: 0px; border-collapse: collapse; padding: 0 0 10px 0"> <span class="diffcontext">My model has three entities:<br />- Taxi<br /> -</span> <span class="diffaddedchars" style="background-color:#ddfade;">-</span> <span class="diffcontext"> shift : Shift<br />- Driver<br /> -</span> <span class="diffaddedchars" style="background-color:#ddfade;">-</span> <span class="diffcontext"> taxi : Taxi<br />- Shift<br /> -</span> <span class="diffaddedchars" style="background-color:#ddfade;">-</span> <span class="diffcontext"> shiftsPerDay : int<br /><br />The following query in JPQL works fine:<br /><br />{code}<br />SELECT t FROM Taxi t WHERE (SELECT COUNT(d) FROM Driver d where d.taxi = t) < t.shift.shiftsPerDay<br />{code}<br /><br />however if I try to use the JPA criteria API:<br /><br />{code}<br /> return getEntityManager().createQuery(<br /> cq.distinct(true).where(<br /> cb.not(<br /> cb.greaterThanOrEqualTo(<br /> cb.count(driverSubquery.select(drivers).where(<br /> cb.equal(drivers.get("taxi"), taxi_))),<br /> taxi_.get("shift").get("shiftsPerDay")<br /> )<br /> )<br /> )<br /> ).getResultList();<br /><br />{code}<br /><br />it results in invalid JPQL:<br /><br />{code}<br />select distinct generatedAlias0 from taxi_fleet.Taxi as generatedAlias0 where count((select generatedAlias1 from taxi_fleet.Driver as generatedAlias1 where generatedAlias1.taxi=generatedAlias0))<generatedAlias0.shift.shiftsPerDay<br />{code}<br /><br />whereas this would be correct (note "select(count(...))" instead of "count(select ...)"):<br /><br />{code}<br />select distinct generatedAlias0 from taxi_fleet.Taxi as generatedAlias0 where (select count(generatedAlias1) from taxi_fleet.Driver as generatedAlias1 where generatedAlias1.taxi=generatedAlias0)<generatedAlias0.shift.shiftsPerDay<br />{code}</span>
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