HHH-17221 Add test for issue
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package org.hibernate.orm.test.subselect;
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import java.util.ArrayList;
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import java.util.List;
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import java.util.Objects;
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import org.hibernate.annotations.Fetch;
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import org.hibernate.annotations.FetchMode;
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import org.hibernate.testing.orm.junit.DomainModel;
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import org.hibernate.testing.orm.junit.JiraKey;
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import org.hibernate.testing.orm.junit.SessionFactory;
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import org.hibernate.testing.orm.junit.SessionFactoryScope;
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import org.junit.jupiter.api.BeforeAll;
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import org.junit.jupiter.api.Test;
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import jakarta.persistence.Column;
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import jakarta.persistence.Entity;
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import jakarta.persistence.FetchType;
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import jakarta.persistence.Id;
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import jakarta.persistence.IdClass;
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import jakarta.persistence.ManyToOne;
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import jakarta.persistence.OneToMany;
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import jakarta.persistence.Table;
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import jakarta.persistence.TypedQuery;
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import static org.junit.jupiter.api.Assertions.assertFalse;
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import static org.junit.jupiter.api.Assertions.assertNotNull;
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@DomainModel(
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annotatedClasses = {
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SubselectAndSingleAttributeIdClassTest.MyEntity.class,
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SubselectAndSingleAttributeIdClassTest.MyChild.class,
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SubselectAndSingleAttributeIdClassTest.MyGrandchild.class,
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}
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)
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@SessionFactory
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@JiraKey( "HHH-17221" )
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public class SubselectAndSingleAttributeIdClassTest {
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@BeforeAll
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public void setUp(SessionFactoryScope scope) {
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scope.inTransaction(
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session -> {
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MyEntity entity = new MyEntity( 1, List.of(
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new MyChild( 11, List.of( new MyGrandchild( 111 ), new MyGrandchild( 112 ) ) ),
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new MyChild( 12, List.of( new MyGrandchild( 121 ), new MyGrandchild( 122 ) ) )
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) );
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session.persist( entity );
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entity.getChildren().forEach( c -> {
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session.persist( c );
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c.getGrandchildren().forEach( session::persist );
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} );
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}
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);
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}
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@Test
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public void testSelect(SessionFactoryScope scope) {
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scope.inTransaction(
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session -> {
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TypedQuery<MyEntity> query = session.createQuery(
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"select e from MyEntity e where id = 1",
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MyEntity.class
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);
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for ( MyEntity entity : query.getResultList() ) {
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assertNotNull( entity.getChildren(), "Children are null" );
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for ( MyChild child : entity.getChildren() ) {
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assertFalse( child.getGrandchildren().isEmpty(), "GRANDCHILDRENDS are empty" );
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}
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}
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}
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);
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}
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@Entity(name = "MyEntity")
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@IdClass(MyEntityId.class)
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@Table(name = "MY_ENTITY")
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public static class MyEntity {
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@Id
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@Column(name = "ID", nullable = false, precision = 9)
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private Integer id;
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@OneToMany(mappedBy = "parent", fetch = FetchType.LAZY)
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private List<MyChild> children = new ArrayList<>();
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public MyEntity() {
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}
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public MyEntity(int id, List<MyChild> children) {
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this.id = id;
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this.children = new ArrayList<>( children );
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this.children.forEach( c -> c.setParent( this ) );
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}
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public List<MyChild> getChildren() {
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return children;
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}
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}
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public static class MyEntityId {
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@Column(name = "ID", nullable = false, precision = 9)
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private Integer id;
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public MyEntityId() {
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}
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public MyEntityId(Integer id) {
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this.id = id;
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}
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@Override
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public boolean equals(Object o) {
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if ( this == o ) {
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return true;
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}
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if ( o == null || getClass() != o.getClass() ) {
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return false;
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}
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MyEntityId that = (MyEntityId) o;
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return Objects.equals( id, that.id );
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}
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@Override
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public int hashCode() {
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return Objects.hash( id );
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}
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}
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@Entity(name = "MyChild")
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@IdClass(MyChildId.class)
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@Table(name = "MY_CHILD")
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public static class MyChild {
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@Id
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@Column(name = "ID", nullable = false, precision = 9)
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private Integer id;
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@ManyToOne(fetch = FetchType.LAZY)
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private MyEntity parent;
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@OneToMany(mappedBy = "child")
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@Fetch(FetchMode.SUBSELECT)
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private List<MyGrandchild> grandchildren = new ArrayList<>();
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public MyChild() {
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}
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public MyChild(int id, List<MyGrandchild> grandchildren) {
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this.id = id;
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this.grandchildren = new ArrayList<>( grandchildren );
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this.grandchildren.forEach( g -> g.setChild( this ) );
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}
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public void setParent(MyEntity parent) {
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this.parent = parent;
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}
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public List<MyGrandchild> getGrandchildren() {
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return grandchildren;
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}
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}
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public static class MyChildId {
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@Column(name = "ID", nullable = false, precision = 9)
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private Integer id;
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public MyChildId() {
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}
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public MyChildId(Integer id) {
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this.id = id;
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}
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@Override
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public boolean equals(Object o) {
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if ( this == o ) {
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return true;
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}
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if ( o == null || getClass() != o.getClass() ) {
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return false;
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}
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MyChildId that = (MyChildId) o;
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return Objects.equals( id, that.id );
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}
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@Override
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public int hashCode() {
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return Objects.hash( id );
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}
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}
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@Entity(name = "MyGrandchild")
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@IdClass(MyGrandchildId.class)
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@Table(name = "MY_GRANDCHILD")
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public static class MyGrandchild {
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@Id
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@Column(name = "ID", nullable = false, precision = 9)
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private Integer id;
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@ManyToOne(fetch = FetchType.LAZY)
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private MyChild child;
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public MyGrandchild() {
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}
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public MyGrandchild(int id) {
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this.id = id;
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}
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public void setChild(MyChild child) {
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this.child = child;
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}
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}
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public static class MyGrandchildId {
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@Column(name = "ID", nullable = false, precision = 9)
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private Integer id;
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public MyGrandchildId() {
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}
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public MyGrandchildId(Integer id) {
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this.id = id;
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}
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@Override
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public boolean equals(Object o) {
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if ( this == o ) {
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return true;
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}
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if ( o == null || getClass() != o.getClass() ) {
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return false;
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}
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MyGrandchildId that = (MyGrandchildId) o;
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return Objects.equals( id, that.id );
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}
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@Override
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public int hashCode() {
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return Objects.hash( id );
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}
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}
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}
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