{code:java}
package org.hibernate.jpa.test;
@Entity
public class Product {
@Id
@GeneratedValue
private Integer id;
@OneToMany(fetch = LAZY, cascade = ALL , orphanRemoval = true )
private List<Widget> widgets;
public Integer getId() {
return id;
}
public void setId(Integer id) {
this.id = id;
}
public void setWidgets(List<Widget> widgets) {
this.widgets = widgets;
}
}
{code}
{code:java}
package org.hibernate.jpa.test;
@Entity
public class Widget {
private String name;
private int id;
public Widget() {
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
@Id
@GeneratedValue
public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
}
{code}
{code:java}
//....
import com.google.common.collect.ImmutableList;
//....
public class EntityManagerTest extends BaseEntityManagerFunctionalTestCase {
//....
@Test
public void testSavingTwiceEntityWithImmutableCollection() {
EntityManager em = getOrCreateEntityManager();
em.getTransaction().begin();
Widget widget1 = new Widget();
widget1.setName("hammer");
Widget widget2 = new Widget();
widget2.setName("axel");
Product p = new Product();
p.setWidgets(ImmutableList.of(widget1, widget2));
em.persist(p);
p = em.getReference(Product.class,p.getId());
em.merge(p);
em.getTransaction().commit();
em.clear();
em.close();
}
}
{code}
Fails with:
{code:none}
java.lang.UnsupportedOperationException
at com.google.common.collect.ImmutableCollection.clear(ImmutableCollection.java:320)
at org.hibernate.collection.internal.PersistentBag.clear(PersistentBag.java:411)
at org.hibernate.type.CollectionType.replaceElements(CollectionType.java:545)
at org.hibernate.type.CollectionType.replace(CollectionType.java:721)
at org.hibernate.type.TypeHelper.replace(TypeHelper.java:167)
at org.hibernate.event.internal.DefaultMergeEventListener.copyValues(DefaultMergeEventListener.java:374)
at org.hibernate.event.internal.DefaultMergeEventListener.entityIsPersistent(DefaultMergeEventListener.java:184)
at org.hibernate.event.internal.DefaultMergeEventListener.onMerge(DefaultMergeEventListener.java:157)
at org.hibernate.event.internal.DefaultMergeEventListener.onMerge(DefaultMergeEventListener.java:65)
at org.hibernate.internal.SessionImpl.fireMerge(SessionImpl.java:905)
at org.hibernate.internal.SessionImpl.merge(SessionImpl.java:891)
at org.hibernate.jpa.test.EntityManagerTest.testSavingTwiceEntityWithImmutableCollection(EntityManagerTest.java:400)
{code}
Full test case available at \[1\].
Problem is visible also when using spring-data \[2\].
\[1\] https://github.com/hibernate/hibernate-orm/compare/master...bostko:test-merge-immutable
\[2\] https://github.com/bostko/test-spring-data |
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