3:57 p.m.
Satish (
https://hibernate.atlassian.net/secure/ViewProfile.jspa?accountId=5f990cf...
) *updated* an issue
Hibernate ORM (
https://hibernate.atlassian.net/browse/HHH?atlOrigin=eyJpIjoiN2M4NGRmYTdi...
) / Bug (
https://hibernate.atlassian.net/browse/HHH-17031?atlOrigin=eyJpIjoiN2M4NG...
) HHH-17031 (
https://hibernate.atlassian.net/browse/HHH-17031?atlOrigin=eyJpIjoiN2M4NG...
) HQL - DELETE does not delete child entity. (
https://hibernate.atlassian.net/browse/HHH-17031?atlOrigin=eyJpIjoiN2M4NG...
)
Change By: Satish (
https://hibernate.atlassian.net/secure/ViewProfile.jspa?accountId=5f990cf...
)
{noformat}When using HQL to DELETE a parent entity,
the delete is not cascaded to child entity.
Here is a snippet of code that has the issues, detailed test case is below.
transaction.begin();
// Use HQL to delete the parent. With CASCADE.ALL,
// the child should be deleted. --- DOES NOT DELETE
Query query = em.createQuery("DELETE FROM ParentEntity WHERE id = :parentId");
query.setParameter("parentId", parentId);
query.executeUpdate();
transaction.commit();
But this piece of code cascades and deletes the child entity.
// Delete using EM ---- WORKS FINE!
int parentId = parentEntity1.getId();
transaction.begin();
ParentEntity retrievedParent = em.find(ParentEntity.class, parentId);
em.remove(retrievedParent);
transaction.commit();
-- Database tables needed for the test case
create table TEST.TEST_PARENT_TABLE
(
ID INTEGER not null primary key,
NAME VARCHAR(256)
);
create table TEST.TEST_CHILD_TABLE
(
ID INTEGER not null primary key,
NAME VARCHAR(256)
);{noformat}
----ParentEntity.java --------
{noformat}package com.example;
import jakarta.persistence.*;
import java.io.Serializable;
import org.hibernate.annotations.NotFound;
import org.hibernate.annotations.NotFoundAction;
@Entity
@Table(name = "TEST_PARENT_TABLE", schema = "TEST")
public class ParentEntity implements Serializable {
private Integer id;
private String name;
private ChildEntity childEntity;
@Id
@Column(name = "ID")
public Integer getId() {
return id;
}
public void setId(Integer id) {
this.id = id;
}
@Column(name = "NAME")
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
@OneToOne(cascade = CascadeType.ALL, fetch = FetchType.EAGER, orphanRemoval = true)
@PrimaryKeyJoinColumn(name = "ID")
@NotFound(action = NotFoundAction.IGNORE)
public ChildEntity getChildEntity() {
return childEntity;
}
public void setChildEntity(ChildEntity childEntity) {
this.childEntity = childEntity;
}{noformat}
--ChildEntity.java
{noformat}package com.example;
import jakarta.persistence.Column;
import jakarta.persistence.Entity;
import jakarta.persistence.Id;
import jakarta.persistence.Table;
import java.io.Serializable;
@Entity
@Table(name = "TEST_CHILD_TABLE", schema = "TEST")
public class ChildEntity implements Serializable {
private Integer id;
private String name;
@Id
@Column(name = "ID")
public Integer getId() {
return id;
}
public void setId(Integer id) {
this.id = id;
}
@Column(name = "NAME")
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
} {noformat}
--JUnit Test
{noformat} package com.example;
import static org.junit.Assert.assertNull;
import jakarta.persistence.EntityManager;
import jakarta.persistence.EntityManagerFactory;
import jakarta.persistence.EntityTransaction;
import jakarta.persistence.Query;
import org.junit.After;
import org.junit.Before;
import org.junit.Test;
public class TestParentChildRelationship {
private EntityManagerFactory emf;
private EntityManager em;
@Before
public void setup() {
emf = JpaConfig.getEntityManagerFactory();
em = emf.createEntityManager();
}
@After
public void tearDown() {
if (em != null) {
em.close();
}
if (emf != null) {
emf.close();
}
}
@Test
public void testParentChildRelationship() {
EntityTransaction transaction = em.getTransaction();
transaction.begin();
// Create Parent entity 1
ParentEntity parentEntity1 = new ParentEntity();
parentEntity1.setId(1);
parentEntity1.setName("parent entity 1");
ChildEntity childEntity1 = new ChildEntity();
childEntity1.setId(1);
childEntity1.setName("Child of parent entity 1");
parentEntity1.setChildEntity(childEntity1);
em.persist(parentEntity1);
// Create Parent entity 2
ParentEntity parentEntity2 = new ParentEntity();
parentEntity2.setId(2);
parentEntity2.setName("parent entity 2");
ChildEntity childEntity2 = new ChildEntity();
childEntity2.setId(2);
childEntity2.setName("Child of parent entity 2");
parentEntity2.setChildEntity(childEntity2);
em.persist(parentEntity2);
transaction.commit();
// Delete using EM
int parentId = parentEntity1.getId();
transaction.begin();
ParentEntity retrievedParent = em.find(ParentEntity.class, parentId);
em.remove(retrievedParent);
transaction.commit();
// Delete using HQL
parentId = parentEntity2.getId();
transaction = em.getTransaction();
transaction.begin();
// Use HQL to delete the parent .... with cascade all, the child should be deleted.
Query query = em.createQuery("DELETE FROM ParentEntity WHERE id = :parentId");
query.setParameter("parentId", parentId);
query.executeUpdate();
transaction.commit();
assertNull(
"Parent entity 1 should be deleted", em.find(ParentEntity.class,
parentEntity1.getId()));
assertNull(
"Parent entity 2 should be deleted", em.find(ParentEntity.class,
parentEntity2.getId()));
assertNull(
"Child entity 1 should be deleted along with the parent",
em.find(ChildEntity.class, childEntity1.getId()));
assertNull(
"Child entity 2 should be deleted along with the parent",
em.find(ChildEntity.class, childEntity2.getId()));
}
}{noformat}
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