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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-10728" style="color: #3b73af; text-decoration: none"><img src="cid:jira-generated-image-avatar-e730d5fb-dc92-4e77-aa31-3d659d82f9db" height="16" width="16" border="0" align="absmiddle" alt="Bug" style="vertical-align: text-bottom"></a> <a href="https://hibernate.atlassian.net/browse/HHH-10728" style="color: #3b73af; text-decoration: none">HHH-10728</a> </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">Change By:</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="raykou" id="email_raykou" href="https://hibernate.atlassian.net/secure/ViewProfile.jspa?name=raykou" style="color:#6c797f;; color: #3b73af; text-decoration: none">raykou</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"> <span class="diffcontext">Sample code:<br>{code:java}<br>Set<Long> depts = new HashSet<>();<br>...<br>Case<Boolean> selectCase = builder.selectCase();<br>selectCase.otherwise(false);<br>selectCase.when(<br> builder.and(<br> builder.equal(join.get("actionPartyType"), ActionPartyType.DEPARTMENT),<br> join.get("actionPartyId").in(depts)<br> ),<br> true);<br>...<br>predicate = builder.and(predicate,</span> <span class="diffremovedchars" style="background-color: #ffe7e7; text-decoration:line-through;"> {color:red}</span> <span class="diffcontext">builder.equal(selectCase, true)</span> <span class="diffremovedchars" style="background-color: #ffe7e7; text-decoration:line-through;">{color}</span> <span class="diffcontext">);<br>query.where(predicate);<br>{code}<br><br>It find that CriteriaBuilder.equal will throws NullPointerException, below is the stacktrace<br><br>{code:java}<br>Caused by: java.lang.NullPointerException<br> at java.lang.Class.isAssignableFrom(Native Method)<br> at org.hibernate.jpa.criteria.ValueHandlerFactory.isNumeric(ValueHandlerFactory.java:52)<br> at org.hibernate.jpa.criteria.predicate.ComparisonPredicate.<init>(ComparisonPredicate.java:52)<br> at org.hibernate.jpa.criteria.CriteriaBuilderImpl.equal(CriteriaBuilderImpl.java:367)<br> at com.xxx.business.dao.wf.impl.ProcessInstanceDAOImpl$1.prepareQuery(ProcessInstanceDAOImpl.java:116)<br> at com.xxx.business.dao.wf.impl.ProcessInstanceDAOImpl$1.prepareQuery(ProcessInstanceDAOImpl.java:1)<br> at com.xxx.business.searching.CriteriaQuerySearch.executeGetRowsCount(CriteriaQuerySearch.java:78)<br> at com.xxx.business.searching.Search$2.call(Search.java:124)<br> at com.xxx.business.searching.Search$2.call(Search.java:1)<br> at com.xxx.business.dao.impl.DataAccessSupportImpl.executeWithTransaction(DataAccessSupportImpl.java:224)<br> ... 166 more<br>{code}<br><br>After checking the source code, it suspected that there is a bug in <br>{code:java}<br>org.hibernate.jpa.criteria.expression.SearchedCaseExpression<br>{code} cause the selectCase.getJavaType() always return null.<br><br>The javaType override logic of SearchedCaseExpression actually do nothing:<br><br>{code:java}<br>private Class<R> javaType; // overrides the javaType kept on tuple-impl so that we can adjust it<br><br>...<br><br>public Case<R> when(Expression<Boolean> condition, Expression<? extends R> result) {<br> WhenClause whenClause = new WhenClause( condition, result );<br> whenClauses.add( whenClause );<br> adjustJavaType( result );<br> return this;<br>}<br><br>@SuppressWarnings({"unchecked"})<br>private void adjustJavaType(Expression<? extends R> exp) {<br> if ( javaType == null ) {<br> javaType = (Class<R>) exp.getJavaType();<br> }<br>}<br><br>...<br><br>public Expression<R> otherwise(Expression<? extends R> result) {<br> this.otherwiseResult = result;<br> adjustJavaType( result );<br> return this;<br>}<br>{code}<br><br>I think it should call AbstractTupleElement.resetJavaType instead of adjustJavaType</span> </td>
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