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<td class="page-title-pattern-first-line " style="padding: 0; 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-11167" style="color: #3b73af; text-decoration: none"><img src="cid:jira-generated-image-avatar-e97e1699-410e-4b1c-8083-d04837edc717" height="16" width="16" border="0" align="absmiddle" alt="Bug" style="vertical-align: text-bottom"></a> <a href="https://hibernate.atlassian.net/browse/HHH-11167" style="color: #3b73af; text-decoration: none">HHH-11167</a> </td>
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<td style="vertical-align: top;; padding: 0; 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-11167" style="color: #3b73af; text-decoration: none">Numeric type inference issues</a> </span> </td>
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<td class="has-icon" style="padding: 0; 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-e97e1699-410e-4b1c-8083-d04837edc717" 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: 0; border-collapse: collapse; font: normal 14px/20px Arial, sans-serif; padding: 2px 0 2px 5px; vertical-align: top"> 5.0.7, 5.2.2, 5.2.1 </td>
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<td style="padding: 0; border-collapse: collapse; font: normal 14px/20px Arial, sans-serif; padding: 2px 0 2px 5px; vertical-align: top"> Unassigned </td>
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<td style="padding: 0; border-collapse: collapse; font: normal 14px/20px Arial, sans-serif; padding: 2px 0 2px 5px; vertical-align: top"> numeric-type-inference-bug.zip </td>
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<td style="padding: 0; border-collapse: collapse; font: normal 14px/20px Arial, sans-serif; padding: 2px 0 2px 5px; vertical-align: top"> hibernate-core </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: 0; border-collapse: collapse; font: normal 14px/20px Arial, sans-serif; padding: 2px 0 2px 5px; vertical-align: top"> 11/Oct/2016 07:34 AM </td>
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<td class="has-icon" style="padding: 0; 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-e74b72aa-8da2-4b01-b608-4f263a279bbb" height="16" width="16" border="0" align="absmiddle" alt="Major" style="vertical-align: text-bottom"> Major </td>
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<td style="padding: 0; border-collapse: collapse; font: normal 14px/20px Arial, sans-serif; padding: 2px 0 2px 5px; vertical-align: top"> <a class="user-hover" rel="lpeter" id="email_lpeter" href="https://hibernate.atlassian.net/secure/ViewProfile.jspa?name=lpeter" style="color:#6c797f;; color: #3b73af; text-decoration: none">Peter Lang</a> </td>
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<td class="text-paragraph-pattern-container mobile-resize-text " style="padding: 0; border-collapse: collapse; padding: 0 0 10px"> <p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0; margin-top: 0">Please see the attached test cases.</p> <p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0">For some specific queries Hibernate fails to infer the correct parameter type and throws an exception when trying to get the result. I'm using the JPA Crtieria API. I've identified two cases that I think are somehow related. </p> <p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0">First when trying to execute a query that only contains parameters, like " ... WHERE 1 + 2 = 3". (I'm building queries dynamically from client request, that's how I can end up with such expressions.) Snippet from first test case:</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; border-radius: 3px; margin: 9px 0">
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<pre class="code-java" style="margin: 10px 0 0; margin-top: 0; max-height: 30em; overflow: auto; white-space: pre-wrap; word-wrap: normal">
CriteriaBuilder criteriaBuilder = entityManager.getCriteriaBuilder();
<span class="code-comment" style="color: #808080">// Entity can be anything, doesn't matter here
</span> CriteriaQuery<Stuff> criteriaQuery = criteriaBuilder.createQuery(Stuff.class);
Root<Stuff> root = criteriaQuery.from(Stuff.class);
ParameterExpression<<span class="code-object" style="color: #910091">Integer</span>> p1 = criteriaBuilder.parameter(<span class="code-object" style="color: #910091">Integer</span>.class);
ParameterExpression<<span class="code-object" style="color: #910091">Integer</span>> p2 = criteriaBuilder.parameter(<span class="code-object" style="color: #910091">Integer</span>.class);
ParameterExpression<<span class="code-object" style="color: #910091">Integer</span>> p3 = criteriaBuilder.parameter(<span class="code-object" style="color: #910091">Integer</span>.class);
Predicate predicate = criteriaBuilder.equal(criteriaBuilder.sum(p1, p2), p3);
criteriaQuery.select(root).where(predicate);
TypedQuery<Stuff> query = entityManager.createQuery(criteriaQuery);
query.setParameter(p1, 1);
query.setParameter(p2, 2);
query.setParameter(p3, 3);
<span class="code-comment" style="color: #808080">// Exception will be thrown, Hibernate fails to infer the type
</span> query.getResultList();
</pre>
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</div> <p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0">Hibernate fails to infer the type, while it's clearly available in the parameter (getJavaType()). It guesses Double (<a href="https://github.com/hibernate/hibernate-orm/blob/0a2a5c622e3eb30724e80bc8661c0ac55ebfb2be/hibernate-core/src/main/java/org/hibernate/hql/internal/ast/tree/BinaryArithmeticOperatorNode.java#L106" class="external-link" rel="nofollow" style="color: #3b73af; text-decoration: none">https://github.com/hibernate/hibernate-orm/blob/0a2a5c622e3eb30724e80bc8661c0ac55ebfb2be/hibernate-core/src/main/java/org/hibernate/hql/internal/ast/tree/BinaryArithmeticOperatorNode.java#L106</a>), and fails to cast. I don't think the guessing part is wrong, but that the type info is lost "somewhere along the way".</p> <p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0">I tried running similar queries with Hibernate's API (not quite familiar with it), using the two org.hibernate.query.Query.setParameter() methods, and it only works when I used the one where the type is declared explicitly. So if the JPA calls are "mapped" to the Hibernate API than it might be an issue with the mapping.</p> <p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0">The other issue, which I think is related is the inconsistencies in inference capabilities. When comparing numeric fields and/or parameter, the following can be observed (see second test case for actual code):</p> <p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0">int_param < long_param --> works<br> int_field < long_field --> works<br> int_param < long_field --> exception</p> </td>
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