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https://issues.apache.org/jira/browse/OPENJPA-2849?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Mark Struberg resolved OPENJPA-2849.
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Resolution: Fixed
Resolved by fixing a very old bug in UnaryOp
> select(max) etc of LocalDate, LocalDateTime etc leads to ClassCastException
> ---------------------------------------------------------------------------
>
> Key: OPENJPA-2849
> URL: https://issues.apache.org/jira/browse/OPENJPA-2849
> Project: OpenJPA
> Issue Type: Bug
> Components: jdbc
> Affects Versions: 3.1.2
> Reporter: Mark Struberg
> Assignee: Mark Struberg
> Priority: Major
> Fix For: 3.1.3
>
>
> The following code leads to a ClassCastException:
> {noformat}
> final TypedQuery<LocalDate> maxLocalDateQry = em.createQuery("select
> max(t.localDateField) from Java8TimeTypes AS t", LocalDate.class);
> final LocalDate maxLocalDate = maxLocalDateQry.getSingleResult();
> assertEquals(VAL_LOCAL_DATE, maxLocalDate);
> {noformat}
> {noformat}
> Caused by: java.lang.ClassCastException: Cannot convert object "01.01.19
> 00:00" of type "class java.sql.Date" into an instance of "class
> java.time.LocalDate".
> at org.apache.openjpa.kernel.Filters.convert(Filters.java:336)
> at org.apache.openjpa.kernel.Filters.convert(Filters.java:264)
> at org.apache.openjpa.jdbc.kernel.exps.UnaryOp.load(UnaryOp.java:142)
> {noformat}
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