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;
        }
    }
}