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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-10412" style="color: #3b73af; text-decoration: none"><img src="cid:jira-generated-image-avatar-ed13f4a0-16a6-4d9e-9e80-ad327ee0df54" height="16" width="16" border="0" align="absmiddle" alt="Bug" style="vertical-align: text-bottom"></a> <a href="https://hibernate.atlassian.net/browse/HHH-10412" style="color: #3b73af; text-decoration: none">HHH-10412</a> </td>
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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-10412" style="color: #3b73af; text-decoration: none">case/when in criteria always casts resulting object which fails on mysql with boolean</a> </span> </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">Issue Type:</th>
<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-avatar-ed13f4a0-16a6-4d9e-9e80-ad327ee0df54" height="16" width="16" border="0" align="absmiddle" alt="Bug" style="vertical-align: text-bottom"> Bug </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">Affects Versions:</th>
<td style="padding: 0px; border-collapse: collapse; font: normal 14px/20px Arial, sans-serif; padding: 2px 0 2px 5px; vertical-align: top"> 5.0.6 </td>
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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"> Unassigned </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">Components:</th>
<td style="padding: 0px; border-collapse: collapse; font: normal 14px/20px Arial, sans-serif; padding: 2px 0 2px 5px; vertical-align: top"> hibernate-entitymanager </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: 0px; border-collapse: collapse; font: normal 14px/20px Arial, sans-serif; padding: 2px 0 2px 5px; vertical-align: top"> 05/Jan/2016 07:05 AM </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">Environment:</th>
<td style="padding: 0px; border-collapse: collapse; font: normal 14px/20px Arial, sans-serif; padding: 2px 0 2px 5px; vertical-align: top"> mysql/mariadb </td>
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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-major-d4d3774b-c86b-4ac3-8da0-92427947a509" height="16" width="16" border="0" align="absmiddle" alt="Major" style="vertical-align: text-bottom"> Major </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">Reporter:</th>
<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="msimka" id="email_msimka" href="https://hibernate.atlassian.net/secure/ViewProfile.jspa?name=msimka" style="color:#6c797f;; color: #3b73af; text-decoration: none">Martin Šimka</a> </td>
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<td class="text-paragraph-pattern-container mobile-resize-text " style="padding: 0px; border-collapse: collapse; padding: 0 0 10px 0"> <p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0 0; margin-top: 0">test <a href="https://github.com/hibernate/hibernate-orm/blob/master/hibernate-entitymanager/src/test/java/org/hibernate/jpa/test/criteria/simplecase/BasicSimpleCaseTest.java#L105" class="external-link" rel="nofollow" style="color: #3b73af; text-decoration: none">o.h.jpa.test.criteria.simplecase.BasicSimpleCaseTest#testCaseLiteralResult2</a> fails on mysql/mariadb</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 3px 3px 3px; border-radius: 3px 3px 3px 3px; margin: 9px 0">
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<pre class="code-java" style="margin: 10px 0 0 0; margin-top: 0; max-height: 30em; overflow: auto; white-space: pre-wrap; word-wrap: normal">
<span class="code-keyword" style="color: #000091">public</span> void testCaseLiteralResult2() {
EntityManager em = getOrCreateEntityManager();
em.getTransaction().begin();
CriteriaBuilder cb = em.getCriteriaBuilder();
CriteriaQuery<<span class="code-object" style="color: #910091">Boolean</span>> cq = cb.createQuery( <span class="code-object" style="color: #910091">Boolean</span>.class );
Root<Customer> expense_ = cq.from( Customer.class );
em.createQuery(
cq.distinct( <span class="code-keyword" style="color: #000091">true</span> ).where(
cb.equal( expense_.get( <span class="code-quote" style="color: #009100">"email"</span> ), <span class="code-quote" style="color: #009100">"@hibernate.com"</span> )
).multiselect(
cb.selectCase()
.when( cb.gt( cb.count( expense_ ), cb.literal( 0L ) ), <span class="code-keyword" style="color: #000091">true</span> )
.otherwise( <span class="code-keyword" style="color: #000091">false</span> )
)
).getSingleResult();
}
</pre>
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<div class="preformatted 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 3px 3px 3px; border-radius: 3px 3px 3px 3px; margin: 9px 0">
<div class="preformattedContent panelContent" style="padding: 9px 12px">
<pre style="margin: 10px 0 0 0; margin-top: 0; max-height: 30em; overflow: auto; white-space: pre-wrap; word-wrap: normal; white-space: pre; word-break: normal; word-wrap: break-word; word-break: break-word; white-space: pre-wrap">org.mariadb.jdbc.internal.common.QueryException: You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near 'bit) else cast(0 as bit) end as col_0_0_ from customer basicsimpl0_ where basics' at line 1
Query is:
sql : 'select distinct case when count(basicsimpl0_.id)>0 then cast(1 as bit) else cast(0 as bit) end as col_0_0_ from customer basicsimpl0_ where basicsimpl0_.email=?', parameters : ['@hibernate.com']
at org.mariadb.jdbc.internal.mysql.MySQLProtocol.getResult(MySQLProtocol.java:969)
at org.mariadb.jdbc.internal.mysql.MySQLProtocol.executeQuery(MySQLProtocol.java:1021)
at org.mariadb.jdbc.internal.mysql.MySQLProtocol.executeQuery(MySQLProtocol.java:1003)
at org.mariadb.jdbc.MySQLStatement.execute(MySQLStatement.java:271)
</pre>
</div>
</div> <p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0 0">cast to bit isn't supported in mysql/mariadb - <a href="https://mariadb.com/kb/en/mariadb/convert/" class="external-link" rel="nofollow" style="color: #3b73af; text-decoration: none">https://mariadb.com/kb/en/mariadb/convert/</a> </p> <p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0 0">possible workaround is to enclose resulting object in literal</p> <p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0 0">this fails:</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 3px 3px 3px; border-radius: 3px 3px 3px 3px; margin: 9px 0">
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<pre class="code-java" style="margin: 10px 0 0 0; margin-top: 0; max-height: 30em; overflow: auto; white-space: pre-wrap; word-wrap: normal">
when( cb.gt( cb.count( expense_ ), cb.literal( 0L ) ), <span class="code-keyword" style="color: #000091">true</span> )
</pre>
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</div> <p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0 0">this passes:</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 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; margin-top: 0; max-height: 30em; overflow: auto; white-space: pre-wrap; word-wrap: normal">
.when( cb.gt( cb.count( expense_ ), cb.literal( 0L ) ), cb.literal( <span class="code-keyword" style="color: #000091">true</span> ) )
</pre>
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