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HHH-12492 Test HQL Delete query with a subquery referencing the paren…
…t query's aliases
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...rc/test/java/org/hibernate/test/hql/DeleteQuerySubqueryReferencingTargetPropertyTest.java
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package org.hibernate.test.hql; | ||
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import javax.persistence.Entity; | ||
import javax.persistence.GeneratedValue; | ||
import javax.persistence.Id; | ||
import javax.persistence.ManyToOne; | ||
import javax.persistence.Query; | ||
import javax.persistence.criteria.CriteriaBuilder; | ||
import javax.persistence.criteria.CriteriaQuery; | ||
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import org.hibernate.jpa.test.BaseEntityManagerFunctionalTestCase; | ||
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import org.hibernate.testing.FailureExpected; | ||
import org.hibernate.testing.TestForIssue; | ||
import org.junit.Assert; | ||
import org.junit.Test; | ||
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import static org.hibernate.testing.transaction.TransactionUtil.doInJPA; | ||
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@TestForIssue(jiraKey = "HHH-12492") | ||
public class DeleteQuerySubqueryReferencingTargetPropertyTest extends BaseEntityManagerFunctionalTestCase { | ||
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@Override | ||
protected Class<?>[] getAnnotatedClasses() { | ||
return new Class<?>[] { Master.class, Detail.class }; | ||
} | ||
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@Test | ||
@FailureExpected(jiraKey = "HHH-12492") | ||
public void testSubQueryReferencingTargetProperty() { | ||
// prepare | ||
doInJPA( this::entityManagerFactory, entityManager -> { | ||
Master m1 = new Master(); | ||
entityManager.persist( m1 ); | ||
Detail d11 = new Detail( m1 ); | ||
entityManager.persist( d11 ); | ||
Detail d12 = new Detail( m1 ); | ||
entityManager.persist( d12 ); | ||
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Master m2 = new Master(); | ||
entityManager.persist( m2 ); | ||
} ); | ||
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doInJPA( this::entityManagerFactory, entityManager -> { | ||
// depending on the generated ids above this delete removes all masters or nothing | ||
// removal of all masters results in foreign key constraint violation | ||
// removal of nothing is incorrect since 2nd master does not have any details | ||
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// DO NOT CHANGE this query: it used to trigger a very specific bug caused | ||
// by the alias not being added to the generated query | ||
String d = "delete from Master m where not exists (select d from Detail d where d.master=m)"; | ||
Query del = entityManager.createQuery( d ); | ||
del.executeUpdate(); | ||
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// so check for exactly one master after deletion | ||
CriteriaBuilder builder = entityManager.getCriteriaBuilder(); | ||
CriteriaQuery<Master> query = builder.createQuery( Master.class ); | ||
query.select( query.from( Master.class ) ); | ||
Assert.assertEquals( 1, entityManager.createQuery( query ).getResultList().size() ); | ||
} ); | ||
} | ||
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@Entity(name = "Master") | ||
public static class Master { | ||
@Id | ||
@GeneratedValue | ||
private Integer id; | ||
} | ||
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@Entity(name = "Detail") | ||
public static class Detail { | ||
@Id | ||
@GeneratedValue | ||
private Integer id; | ||
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@ManyToOne(optional = false) | ||
private Master master; | ||
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public Detail(Master master) { | ||
this.master = master; | ||
} | ||
} | ||
} |