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add more tests for @onDelete with various annotation-based mappings
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‎hibernate-core/src/test/java/org/hibernate/orm/test/ondeletecascade/OnDeleteCollectionTest.java

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/*
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* SPDX-License-Identifier: Apache-2.0
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* Copyright Red Hat Inc. and Hibernate Authors
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*/
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package org.hibernate.orm.test.ondeletecascade;
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import jakarta.persistence.ElementCollection;
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import jakarta.persistence.Entity;
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import jakarta.persistence.Id;
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import jakarta.persistence.Inheritance;
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import jakarta.persistence.InheritanceType;
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import org.hibernate.Hibernate;
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import org.hibernate.annotations.OnDelete;
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import org.hibernate.annotations.OnDeleteAction;
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import org.hibernate.testing.orm.junit.DialectFeatureChecks;
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import org.hibernate.testing.orm.junit.EntityManagerFactoryScope;
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import org.hibernate.testing.orm.junit.Jpa;
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import org.hibernate.testing.orm.junit.RequiresDialectFeature;
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import org.junit.jupiter.api.Test;
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import java.util.HashSet;
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import java.util.Set;
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import static org.junit.jupiter.api.Assertions.assertEquals;
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import static org.junit.jupiter.api.Assertions.assertFalse;
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import static org.junit.jupiter.api.Assertions.assertTrue;
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@Jpa(annotatedClasses =
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{OnDeleteCollectionTest.A.class},
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useCollectingStatementInspector = true)
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@RequiresDialectFeature(feature = DialectFeatureChecks.SupportsCascadeDeleteCheck.class)
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class OnDeleteCollectionTest {
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@Test void test(EntityManagerFactoryScope scope) {
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var inspector = scope.getCollectingStatementInspector();
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scope.inTransaction( em -> {
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A a = new A();
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a.id = 2;
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a.bs.add( "b" );
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em.persist( a );
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} );
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inspector.assertExecutedCount( 2 );
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inspector.clear();
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scope.inTransaction( em -> {
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A a = em.find( A.class, 2L );
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inspector.assertExecutedCount( 1 );
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assertEquals( 1, a.bs.size() );
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inspector.assertExecutedCount( 2 );
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assertTrue( Hibernate.isInitialized( a.bs ) );
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} );
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inspector.clear();
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scope.inTransaction( em -> {
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A a = em.find( A.class, 2L );
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inspector.assertExecutedCount( 1 );
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em.remove( a );
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assertFalse( Hibernate.isInitialized( a.bs ) );
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} );
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inspector.assertExecutedCount( 2 );
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scope.inTransaction( em -> {
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assertEquals( 0,
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em.createNativeQuery( "select count(*) from A_bs", Integer.class )
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.getSingleResultOrNull() );
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assertEquals( 0,
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em.createNativeQuery( "select count(*) from A", Integer.class )
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.getSingleResultOrNull() );
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});
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}
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@Entity(name = "A")
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@Inheritance(strategy = InheritanceType.JOINED)
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static class A {
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@Id
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long id;
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boolean a;
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@ElementCollection
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@OnDelete(action = OnDeleteAction.CASCADE)
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Set<String> bs = new HashSet<>();
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}
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}

‎hibernate-core/src/test/java/org/hibernate/orm/test/ondeletecascade/OnDeleteJoinedInheritanceTest.java

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/*
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* SPDX-License-Identifier: Apache-2.0
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* Copyright Red Hat Inc. and Hibernate Authors
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*/
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package org.hibernate.orm.test.ondeletecascade;
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import jakarta.persistence.Entity;
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import jakarta.persistence.Id;
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import jakarta.persistence.Inheritance;
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import jakarta.persistence.InheritanceType;
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import org.hibernate.annotations.OnDelete;
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import org.hibernate.annotations.OnDeleteAction;
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import org.hibernate.testing.orm.junit.DialectFeatureChecks;
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import org.hibernate.testing.orm.junit.EntityManagerFactoryScope;
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import org.hibernate.testing.orm.junit.Jpa;
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import org.hibernate.testing.orm.junit.RequiresDialectFeature;
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import org.junit.jupiter.api.Test;
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import static org.junit.jupiter.api.Assertions.assertEquals;
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@Jpa(annotatedClasses =
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{OnDeleteJoinedInheritanceTest.A.class,
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OnDeleteJoinedInheritanceTest.B.class,
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OnDeleteJoinedInheritanceTest.C.class},
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useCollectingStatementInspector = true)
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@RequiresDialectFeature(feature = DialectFeatureChecks.SupportsCascadeDeleteCheck.class)
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class OnDeleteJoinedInheritanceTest {
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@Test void test(EntityManagerFactoryScope scope) {
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var inspector = scope.getCollectingStatementInspector();
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scope.inTransaction( em -> {
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B b = new B();
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b.id = 1;
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em.persist( b );
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C c = new C();
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c.id = 2;
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em.persist( c );
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} );
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inspector.assertExecutedCount( 4 );
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inspector.clear();
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scope.inTransaction( em -> {
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A b = em.find( A.class, 1L );
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A c = em.getReference( A.class, 2L );
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inspector.assertExecutedCount( 1 );
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em.remove( b );
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em.remove( c );
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} );
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inspector.assertExecutedCount( 4 );
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scope.inTransaction( em -> {
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assertEquals( 0,
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em.createNativeQuery( "select count(*) from B", Integer.class )
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.getSingleResultOrNull() );
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assertEquals( 0,
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em.createNativeQuery( "select count(*) from C", Integer.class )
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.getSingleResultOrNull() );
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assertEquals( 0,
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em.createNativeQuery( "select count(*) from A", Integer.class )
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.getSingleResultOrNull() );
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});
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}
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@Entity(name = "A")
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@Inheritance(strategy = InheritanceType.JOINED)
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static class A {
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@Id
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long id;
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boolean a;
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}
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@Entity(name = "B")
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@OnDelete(action = OnDeleteAction.CASCADE)
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static class B extends A {
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long b;
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}
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@Entity(name = "C")
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@OnDelete(action = OnDeleteAction.CASCADE)
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static class C extends A {
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int c;
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}
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}

‎hibernate-core/src/test/java/org/hibernate/orm/test/ondeletecascade/OnDeleteManyToManyTest.java

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/*
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* SPDX-License-Identifier: Apache-2.0
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* Copyright Red Hat Inc. and Hibernate Authors
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*/
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package org.hibernate.orm.test.ondeletecascade;
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import jakarta.persistence.Entity;
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import jakarta.persistence.Id;
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import jakarta.persistence.Inheritance;
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import jakarta.persistence.InheritanceType;
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import jakarta.persistence.ManyToMany;
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import org.hibernate.Hibernate;
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import org.hibernate.annotations.OnDelete;
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import org.hibernate.annotations.OnDeleteAction;
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import org.hibernate.testing.orm.junit.DialectFeatureChecks;
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import org.hibernate.testing.orm.junit.EntityManagerFactoryScope;
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import org.hibernate.testing.orm.junit.Jpa;
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import org.hibernate.testing.orm.junit.RequiresDialectFeature;
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import org.junit.jupiter.api.Test;
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import java.util.HashSet;
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import java.util.Set;
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import static org.junit.jupiter.api.Assertions.assertEquals;
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import static org.junit.jupiter.api.Assertions.assertFalse;
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import static org.junit.jupiter.api.Assertions.assertTrue;
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@Jpa(annotatedClasses =
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{OnDeleteManyToManyTest.A.class,
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OnDeleteManyToManyTest.B.class},
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useCollectingStatementInspector = true)
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@RequiresDialectFeature(feature = DialectFeatureChecks.SupportsCascadeDeleteCheck.class)
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class OnDeleteManyToManyTest {
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@Test void test(EntityManagerFactoryScope scope) {
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var inspector = scope.getCollectingStatementInspector();
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scope.inTransaction( em -> {
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B b = new B();
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b.id = 1;
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em.persist( b );
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A a = new A();
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a.id = 2;
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a.bs.add( b );
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em.persist( a );
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} );
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inspector.assertExecutedCount( 3 );
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inspector.clear();
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scope.inTransaction( em -> {
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A a = em.find( A.class, 2L );
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inspector.assertExecutedCount( 1 );
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assertEquals( 1, a.bs.size() );
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inspector.assertExecutedCount( 2 );
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assertTrue( Hibernate.isInitialized( a.bs ) );
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} );
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inspector.clear();
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scope.inTransaction( em -> {
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A a = em.find( A.class, 2L );
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inspector.assertExecutedCount( 1 );
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em.remove( a );
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assertFalse( Hibernate.isInitialized( a.bs ) );
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} );
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inspector.assertExecutedCount( 2 );
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scope.inTransaction( em -> {
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assertEquals( 1,
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em.createNativeQuery( "select count(*) from B", Integer.class )
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.getSingleResultOrNull() );
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assertEquals( 0,
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em.createNativeQuery( "select count(*) from A_B", Integer.class )
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.getSingleResultOrNull() );
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assertEquals( 0,
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em.createNativeQuery( "select count(*) from A", Integer.class )
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.getSingleResultOrNull() );
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});
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}
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@Entity(name = "A")
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@Inheritance(strategy = InheritanceType.JOINED)
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static class A {
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@Id
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long id;
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boolean a;
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@ManyToMany
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@OnDelete(action = OnDeleteAction.CASCADE)
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Set<B> bs = new HashSet<>();
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}
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@Entity(name = "B")
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static class B {
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@Id
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long id;
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}
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}

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