I have an entity with child one-to-one entity, that could be skipped. I decided to use @MapsId and use same identifier for both entities. But when CrudRepository fires "save" operation, it calls hibernate's method "merge" and saving crushes.
{code:java}
public class MapsIdTestCase extends BaseCoreFunctionalTestCase {
@Override
protected Class[] getAnnotatedClasses() {
return new Class[]{
Foo.class,
Bar.class
};
}
// If you use *.hbm.xml mappings, instead of annotations, add the mappings here.
@Override
protected String[] getMappings() {
return new String[]{};
}
// If those mappings reside somewhere other than resources/org/hibernate/test, change this.
@Override
protected String getBaseForMappings() {
return "org/hibernate/test/";
}
// Add in any settings that are specific to your test. See resources/hibernate.properties for the defaults.
@Override
protected void configure(Configuration configuration) {
super.configure(configuration);
configuration.setProperty(AvailableSettings.SHOW_SQL, Boolean.TRUE.toString());
configuration.setProperty(AvailableSettings.FORMAT_SQL, Boolean.TRUE.toString());
configuration.setProperty("hibernate.temp.use_jdbc_metadata_defaults", Boolean.FALSE.toString());
configuration.setProperty("cache.provider_class", "org.hibernate.cache.internal.NoCachingRegionFactory");
configuration.setProperty(Environment.DIALECT, "org.hibernate.dialect.Oracle10gDialect");
configuration.setProperty(Environment.ORDER_UPDATES, Boolean.TRUE.toString());
configuration.setProperty(Environment.AUTOCOMMIT, Boolean.FALSE.toString());
configuration.setProperty(Environment.USE_STREAMS_FOR_BINARY, Boolean.TRUE.toString());
configuration.setProperty(Environment.USE_SCROLLABLE_RESULTSET, Boolean.TRUE.toString());
configuration.setProperty(Environment.USE_NEW_ID_GENERATOR_MAPPINGS, Boolean.TRUE.toString());
//configuration.setProperty( AvailableSettings.GENERATE_STATISTICS, "true" );
}
// Add your tests, using standard JUnit.
@Test
public void mainTest() throws Exception {
final Long fooId = 500L;
doInHibernate(this::sessionFactory, session -> {
Foo foo = new Foo();
foo.setId(fooId);
foo.setName("Foo1");
session.save(foo);
});
doInHibernate(this::sessionFactory, session -> {
Foo foo = session.find(Foo.class, fooId);
Bar bar = foo.getBar();
if (bar == null) {
bar = new Bar(foo);
foo.setBar(bar);
}
bar.setName("Bar2");
session.merge(foo);
});
doInHibernate(this::sessionFactory, session -> {
Foo foo = session.find(Foo.class, fooId);
assertNotNull(foo.getBar());
});
}
@Entity
@Table(name = "TEST_FOO")
public static class Foo {
private Long id;
private String name;
private Bar bar;
@Id
@Column(name = "ID")
public Long getId() {
return id;
}
public void setId(Long id) {
this.id = id;
}
@Column(name = "name")
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
@OneToOne(cascade = CascadeType.ALL)
@JoinColumn(name = "foo_id")
public Bar getBar() {
return bar;
}
public void setBar(Bar bar) {
this.bar = bar;
}
}
@Entity
@Table(name = "TEST_BAR")
public static class Bar {
private Long id;
private Foo foo;
private String name;
public Bar() {
}
Bar(Foo foo) {
this.foo = foo;
}
@Id
@GeneratedValue(generator = "foreign")
@GenericGenerator(name = "foreign", strategy = "foreign", parameters = {
@org.hibernate.annotations.Parameter(name = "property", value = "foo")
})
@Column(name = "foo_id")
public Long getId() {
return id;
}
public void setId(Long id) {
this.id = id;
}
@OneToOne(mappedBy = "bar")
@MapsId("foo_id")
public Foo getFoo() {
return foo;
}
public void setFoo(Foo foo) {
this.foo = foo;
}
@Column(name = "name")
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
}
}
{code}
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