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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-12035" style="color: #3b73af; text-decoration: none"><img src="cid:jira-generated-image-avatar-525c252b-7f55-41b5-98bf-1a3e6e4552ec" height="16" width="16" border="0" align="absmiddle" alt="Bug" style="vertical-align: text-bottom"></a> <a href="https://hibernate.atlassian.net/browse/HHH-12035" style="color: #3b73af; text-decoration: none">HHH-12035</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-12035" style="color: #3b73af; text-decoration: none">NullPointerException when executing query with subqueries multiple times</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-525c252b-7f55-41b5-98bf-1a3e6e4552ec" height="16" width="16" border="0" align="absmiddle" alt="Bug" style="vertical-align: text-bottom"> Bug </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"> 5.2.11 </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"> bug-demonstrator.tar.gz </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"> 16/Oct/2017 09:19 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-63ff0594-2c8b-4f05-be91-7191054948d1" 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: 0; border-collapse: collapse; font: normal 14px/20px Arial, sans-serif; padding: 2px 0 2px 5px; vertical-align: top"> <a class="user-hover" rel="aslaski" id="email_aslaski" href="https://hibernate.atlassian.net/secure/ViewProfile.jspa?name=aslaski" style="color:#6c797f;; color: #3b73af; text-decoration: none">Adam Slaski</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">Consider the following code:</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">
<span class="code-keyword" style="color: #000091">final</span> Query q = session.createQuery(<span class="code-quote" style="color: #009100">"select e from com.example.bugdemonstrator.entities.E1 e <span class="code-keyword" style="color: #000091; color: #009100">inner</span> join fetch e.items where e.id IN :ids"</span>);
q.setParameterList(<span class="code-quote" style="color: #009100">"ids"</span>, Stream.of(0L,1L,2L,3L).collect(Collectors.toList()));
<span class="code-object" style="color: #910091">System</span>.out.println(q.list());
q.setParameterList(<span class="code-quote" style="color: #009100">"ids"</span>, Stream.of(4L,5L).collect(Collectors.toList()));
<span class="code-object" style="color: #910091">System</span>.out.println(q.list());
</pre>
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</div> <p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0">It is interrupted with NPE on the second <tt>q.list()</tt>. This is because <tt>QueryParameterBindingImpl</tt> doesn't clean <tt>parameterBindingMap</tt> between executions. </p> <p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0">The problem occurs only if query has subselects (more precisely when <tt>createSubselects</tt> in <tt>org.hibernate.loader.Loader#processResultSet</tt> evaluates to true). <br> Method <tt>org.hibernate.loader.Loader#createSubselects</tt> iterates over parameter bindings from the previous execution of a query, doesn't find them and throws NPE. </p> <p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0">side note:<br> method <tt>org.hibernate.hql.internal.ast.ParameterTranslationsImpl#getNamedParameterInfo</tt><br> should log debug info when parameter name not found. </p> <p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0">Steps to reproduce with attached tarball:</p>
<ol>
<li>unpack</li>
<li>mvn spring-boot:run</li>
</ol> <p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0">Stacktrace:</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">
Caused by: java.lang.NullPointerException
at org.hibernate.hql.internal.ast.ParameterTranslationsImpl.getNamedParameterSqlLocations(ParameterTranslationsImpl.java:68)
at org.hibernate.loader.hql.QueryLoader.getNamedParameterLocs(QueryLoader.java:602)
at org.hibernate.loader.Loader.buildNamedParameterLocMap(Loader.java:1101)
at org.hibernate.loader.Loader.createSubselects(Loader.java:1064)
at org.hibernate.loader.Loader.processResultSet(Loader.java:1029)
at org.hibernate.loader.Loader.doQuery(Loader.java:959)
at org.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:351)
at org.hibernate.loader.Loader.doList(Loader.java:2702)
at org.hibernate.loader.Loader.doList(Loader.java:2685)
at org.hibernate.loader.Loader.listIgnoreQueryCache(Loader.java:2517)
at org.hibernate.loader.Loader.list(Loader.java:2512)
at org.hibernate.loader.hql.QueryLoader.list(QueryLoader.java:502)
at org.hibernate.hql.internal.ast.QueryTranslatorImpl.list(QueryTranslatorImpl.java:384)
at org.hibernate.engine.query.spi.HQLQueryPlan.performList(HQLQueryPlan.java:216)
at org.hibernate.internal.SessionImpl.list(SessionImpl.java:1490)
at org.hibernate.query.internal.AbstractProducedQuery.doList(AbstractProducedQuery.java:1445)
at org.hibernate.query.internal.AbstractProducedQuery.list(AbstractProducedQuery.java:1414)
at com.example.bugdemonstrator.BugDemonstratorApplication.run(BugDemonstratorApplication.java:61)
at com.example.bugdemonstrator.BugDemonstratorApplication$$FastClassBySpringCGLIB$$de226c0f.invoke(<generated>)
at org.springframework.cglib.proxy.MethodProxy.invoke(MethodProxy.java:204)
at org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.invokeJoinpoint(CglibAopProxy.java:738)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:157)
at org.springframework.transaction.interceptor.TransactionInterceptor$1.proceedWithInvocation(TransactionInterceptor.java:99)
at org.springframework.transaction.interceptor.TransactionAspectSupport.invokeWithinTransaction(TransactionAspectSupport.java:282)
at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:96)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179)
at org.springframework.aop.framework.CglibAopProxy$DynamicAdvisedInterceptor.intercept(CglibAopProxy.java:673)
at com.example.bugdemonstrator.BugDemonstratorApplication$$EnhancerBySpringCGLIB$$bed30d97.run(<generated>)
at org.springframework.boot.SpringApplication.callRunner(SpringApplication.java:732)
... 12 more
</pre>
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