{code:java}@Entity
@Table(name = "ENTITY_A")
public class EntityA {
@Id
@GeneratedValue(strategy = GenerationType.AUTO)
@Column(name = "ID")
Integer id;
@JoinColumn(name = "PARENT_ENTITY")
@ManyToOne
EntityA parent;
}{code}
{code:java} @Test
public void hhhXXXXTest() throws Exception {
try (Session s = openSession()) {
Transaction tx = s.beginTransaction();
EntityA entityA = new EntityA();
s.persist(entityA);
tx.commit();
}
try (Session s = openSession()) {
Query<EntityA> query = s.createQuery("select coalesce(par, a) from EntityA a left join a.parent par",
EntityA.class);
List<EntityA> actual = query.getResultList();
assertThat(actual).hasSize(1);
}
}{code}
{noformat}java.lang.NullPointerException: Cannot invoke "org.hibernate.metamodel.mapping.SqlExpressible.getJdbcMapping()" because the return value of "org.hibernate.sql.ast.tree.expression.Expression.getExpressionType()" is null
at org.hibernate.sql.results.internal.SqlSelectionImpl.getJdbcValueExtractor(SqlSelectionImpl.java:68)
at org.hibernate.sql.results.jdbc.internal.JdbcValuesResultSetImpl.readCurrentRowValues(JdbcValuesResultSetImpl.java:262)
at org.hibernate.sql.results.jdbc.internal.JdbcValuesResultSetImpl.advance(JdbcValuesResultSetImpl.java:243)
at org.hibernate.sql.results.jdbc.internal.JdbcValuesResultSetImpl.processNext(JdbcValuesResultSetImpl.java:84)
at org.hibernate.sql.results.jdbc.internal.AbstractJdbcValues.next(AbstractJdbcValues.java:29)
at org.hibernate.sql.results.internal.RowProcessingStateStandardImpl.next(RowProcessingStateStandardImpl.java:65)
at org.hibernate.sql.results.spi.ListResultsConsumer.consume(ListResultsConsumer.java:198)
at org.hibernate.sql.results.spi.ListResultsConsumer.consume(ListResultsConsumer.java:33)
at org.hibernate.sql.exec.internal.JdbcSelectExecutorStandardImpl.doExecuteQuery(JdbcSelectExecutorStandardImpl.java:362)
at org.hibernate.sql.exec.internal.JdbcSelectExecutorStandardImpl.executeQuery(JdbcSelectExecutorStandardImpl.java:168)
at org.hibernate.sql.exec.internal.JdbcSelectExecutorStandardImpl.list(JdbcSelectExecutorStandardImpl.java:93)
at org.hibernate.sql.exec.spi.JdbcSelectExecutor.list(JdbcSelectExecutor.java:31)
at org.hibernate.query.sqm.internal.ConcreteSqmSelectQueryPlan.lambda$new$0(ConcreteSqmSelectQueryPlan.java:109)
at org.hibernate.query.sqm.internal.ConcreteSqmSelectQueryPlan.withCacheableSqmInterpretation(ConcreteSqmSelectQueryPlan.java:302)
at org.hibernate.query.sqm.internal.ConcreteSqmSelectQueryPlan.performList(ConcreteSqmSelectQueryPlan.java:243)
at org.hibernate.query.sqm.internal.QuerySqmImpl.doList(QuerySqmImpl.java:518)
at org.hibernate.query.spi.AbstractSelectionQuery.list(AbstractSelectionQuery.java:367)
at org.hibernate.query.Query.getResultList(Query.java:119)
at org.hibernate.bugs.ORMUnitTestCase.hhhXXXXTest(ORMUnitTestCase.java:71)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:77)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.base/java.lang.reflect.Method.invoke(Method.java:568)
at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:59)
at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:56)
at org.hibernate.testing.junit4.ExtendedFrameworkMethod.invokeExplosively(ExtendedFrameworkMethod.java:45)
at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:26)
at org.junit.internal.runners.statements.RunAfters.evaluate(RunAfters.java:27)
at org.junit.internal.runners.statements.FailOnTimeout$CallableStatement.call(FailOnTimeout.java:299)
at org.junit.internal.runners.statements.FailOnTimeout$CallableStatement.call(FailOnTimeout.java:293)
at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)
at java.base/java.lang.Thread.run(Thread.java:833)
{noformat}
Failing test case to be attached and also available at [https://github.com/ratoaq2/HHH-16539|https://github.com/ratoaq2/HHH-16539|smart-link] |
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