@SuppressWarnings({"unchecked"})
private void cleanup() {
Session s = openSession();
s.beginTransaction();
s.createQuery("delete from SubItem").executeUpdate();
for (Hoarder hoarder : (List<Hoarder>) s.createQuery("from Hoarder").list()) {
hoarder.getItems().clear();
s.delete(hoarder);
}
for (Category category : (List<Category>) s.createQuery("from Category").list()) {
Item exampleItem = category.getExampleItem();
if (exampleItem != null) {
category.setExampleItem(null);
exampleItem.setCategory(null);
s.delete(category);
s.delete(exampleItem);
}
}
for (Item item : (List<Item>) s.createQuery("from Item").list()) {
Category category = item.getCategory();
item.setCategory(null);
if (category != null) {
category.setExampleItem(null);
}
s.delete(item);
}
s.createQuery("delete from Item").executeUpdate();
s.getTransaction().commit();
s.close();
}
@Test
public void testMergeMultipleEntityCopiesAllowedAndDisallowed() {
Item item1 = new Item();
item1.setName("item1 name");
Category category = new Category();
category.setName("category");
item1.setCategory(category);
category.setExampleItem(item1);
EntityManager em = getOrCreateEntityManager();
em.getTransaction().begin();
em.persist(item1);
em.getTransaction().commit();
em.close();
// get another representation of item1
em = getOrCreateEntityManager();
em.getTransaction().begin();
Item item1_1 = em.find(Item.class, item1.getId());
// make sure item1_1.category is initialized
Hibernate.initialize(item1_1.getCategory());
em.getTransaction().commit();
em.close();
em = getOrCreateEntityManager();
em.getTransaction().begin();
Item item1Merged = em.merge(item1);
// make sure item1Merged.category is also managed
Hibernate.initialize(item1Merged.getCategory());
item1Merged.setCategory(category);
category.setExampleItem(item1_1);
// now item1Merged is managed and it has a nested detached item
// and there is multiple managed/detached Category objects
try {
// the following should fail because multiple copies of Category objects is not allowed by
// CustomEntityCopyObserver
em.merge(item1Merged);
fail(
"should have failed because CustomEntityCopyObserver does not allow multiple copies of a Category. ");
} catch (IllegalStateException ex) {
// expected
} finally {
em.getTransaction().rollback();
}
em.close();
em = getOrCreateEntityManager();
em.getTransaction().begin();
item1 = em.find(Item.class, item1.getId());
assertEquals(category.getName(), item1.getCategory().getName());
assertSame(item1, item1.getCategory().getExampleItem());
em.getTransaction().commit();
em.close();
cleanup();
}
@Test
public void testTopLevelManyToOneChangedToNewEntity() {
Item item1 = new Item();
item1.setName("item1 name");
Category category = new Category();
category.setName("category");
item1.setCategory(category);
category.setExampleItem(item1);
Session s = openSession();
Transaction tx = s.beginTransaction();
s.persist(item1);
tx.commit();
s.close();
// get another representation of item1
s = openSession();
tx = s.beginTransaction();
Item item1_1 = (Item) s.get(Item.class, item1.getId());
tx.commit();
s.close();
// change many-to-one in top level to be a new (transient)
Category categoryNewer = new Category();
categoryNewer.setName("newer category");
item1.setCategory(categoryNewer);
// put the other representation in categoryNewer
categoryNewer.setExampleItem(item1_1);
s = openSession();
tx = s.beginTransaction();
Item item1Merged = (Item) s.merge(item1);
// the many-to-one from the top level item will win.
assertEquals(categoryNewer.getName(), item1Merged.getCategory().getName());
assertSame(item1Merged, item1Merged.getCategory().getExampleItem());
tx.commit();
s.close();
s = openSession();
tx = s.beginTransaction();
item1 = (Item) s.get(Item.class, item1.getId());
assertEquals(categoryNewer.getName(), item1.getCategory().getName());
assertSame(item1, item1.getCategory().getExampleItem());
// make sure original category is still there
Category categoryQueried =
(Category) s.createQuery("from Category c where c.name='category'").uniqueResult();
assertNotNull(categoryQueried);
// make sure original category has the same item.
assertSame(item1, categoryQueried.getExampleItem());
// set exampleItem to null to avoid constraint violation on cleanup.
categoryQueried.setExampleItem(null);
tx.commit();
s.close();
cleanup();
}
@Test
public void testNestedManyToOneChangedToNewEntity() {
Item item1 = new Item();
item1.setName("item1 name");
Category category = new Category();
category.setName("category");
item1.setCategory(category);
category.setExampleItem(item1);
Session s = openSession();
Transaction tx = s.beginTransaction();
s.persist(item1);
tx.commit();
s.close();
// get another representation of item1
s = openSession();
tx = s.beginTransaction();
Item item1_1 = (Item) s.get(Item.class, item1.getId());
tx.commit();
s.close();
// change many-to-one in nested entity to a new (transient) value
Category categoryNew = new Category();
categoryNew.setName("new category");
item1_1.setCategory(categoryNew);
item1.getCategory().setExampleItem(item1_1);
s = openSession();
tx = s.beginTransaction();
Item item1Merged = (Item) s.merge(item1);
// the many-to-one from the top level item will win.
assertEquals(category.getName(), item1Merged.getCategory().getName());
assertSame(item1Merged, item1Merged.getCategory().getExampleItem());
tx.commit();
s.close();
s = openSession();
tx = s.beginTransaction();
item1 = (Item) s.get(Item.class, item1.getId());
assertEquals(category.getName(), item1.getCategory().getName());
assertSame(item1, item1.getCategory().getExampleItem());
// make sure new category got persisted
Category categoryQueried =
(Category) s.createQuery("from Category c where c.name='new category'").uniqueResult();
assertNotNull(categoryQueried);
tx.commit();
s.close();
cleanup();
}
/** 4.テキストデータ読み込み時 */
public void characters(char[] ch, int offset, int length) {
String textData = new String(ch, offset, length);
// System.out.println("テキストデータ：" + textData);
if ("TotalResults".equals(currentQName)) totalResults = Integer.parseInt(textData);
if ("Item".equals(currentQName)) {
tmpItem = new Item();
tmpItem.setCategory(category);
}
if ("ASIN".equals(currentQName)) tmpItem.setAsin(textData);
else if ("DetailPageURL".equals(currentQName)) tmpItem.setDetailPageURL(textData);
else if ("SalesRank".equals(currentQName)) tmpItem.setSalesRank(Integer.parseInt(textData));
else if ("URL".equals(currentQName) && "SmallImage".equals(currentQName2))
tmpItem.setSmallImageURL(textData);
else if ("URL".equals(currentQName) && "MediumImage".equals(currentQName2))
tmpItem.setMediumImageURL(textData);
else if ("URL".equals(currentQName) && "LargeImage".equals(currentQName2))
tmpItem.setLargeImageURL(textData);
else if ("EAN".equals(currentQName)) tmpItem.setEan(textData);
else if ("Condition".equals(currentQName)
&& "OfferAttributes".equals(currentQName2)
&& "Offer".equals(currentQName3)) tmpItem.setCondition(textData);
else if ("Amount".equals(currentQName) && "ListPrice".equals(currentQName2))
tmpItem.setListPrice(Integer.parseInt(textData));
else if ("ReleaseDate".equals(currentQName)) tmpItem.setReleaseDate(textData);
else if ("Title".equals(currentQName)) tmpItem.setTitle(textData);
else if ("Amount".equals(currentQName)
&& "Price".equals(currentQName2)
&& "OfferListingId".equals(currentQName3))
tmpItem.setOfferPrice(Integer.parseInt(textData));
else if ("PercentageSaved".equals(currentQName))
tmpItem.setPercentageSaved(Integer.parseInt(textData));
else if ("AvailabilityType".equals(currentQName)) tmpItem.setAvailability(textData);
}
@SuppressWarnings({"unchecked"})
private void cleanup() {
EntityManager em = getOrCreateEntityManager();
em.getTransaction().begin();
for (Hoarder hoarder : (List<Hoarder>) em.createQuery("from Hoarder").getResultList()) {
hoarder.getItems().clear();
em.remove(hoarder);
}
for (Category category : (List<Category>) em.createQuery("from Category").getResultList()) {
if (category.getExampleItem() != null) {
category.setExampleItem(null);
em.remove(category);
}
}
for (Item item : (List<Item>) em.createQuery("from Item").getResultList()) {
item.setCategory(null);
em.remove(item);
}
em.createQuery("delete from Item").executeUpdate();
em.getTransaction().commit();
em.close();
}
@Test
public void testTopLevelManyToOneManagedNestedIsDetached() {
Item item1 = new Item();
item1.setName("item1 name");
Category category = new Category();
category.setName("category");
item1.setCategory(category);
category.setExampleItem(item1);
Session s = openSession();
Transaction tx = s.beginTransaction();
s.persist(item1);
tx.commit();
s.close();
// get another representation of item1
s = openSession();
tx = s.beginTransaction();
Item item1_1 = (Item) s.get(Item.class, item1.getId());
tx.commit();
s.close();
s = openSession();
tx = s.beginTransaction();
Item item1Merged = (Item) s.merge(item1);
item1Merged.setCategory(category);
category.setExampleItem(item1_1);
// now item1Merged is managed and it has a nested detached item
s.merge(item1Merged);
assertEquals(category.getName(), item1Merged.getCategory().getName());
assertSame(item1Merged, item1Merged.getCategory().getExampleItem());
tx.commit();
s.close();
s = openSession();
tx = s.beginTransaction();
item1 = (Item) s.get(Item.class, item1.getId());
assertEquals(category.getName(), item1.getCategory().getName());
assertSame(item1, item1.getCategory().getExampleItem());
tx.commit();
s.close();
cleanup();
}
@Test
public void testNestedManyToOneChangedToNull() {
Item item1 = new Item();
item1.setName("item1 name");
Category category = new Category();
category.setName("category");
item1.setCategory(category);
category.setExampleItem(item1);
Session s = openSession();
Transaction tx = s.beginTransaction();
s.persist(item1);
tx.commit();
s.close();
// get another representation of item1
s = openSession();
tx = s.beginTransaction();
Item item1_1 = (Item) s.get(Item.class, item1.getId());
tx.commit();
s.close();
// change many-to-one in nested entity to null.
item1_1.setCategory(null);
item1.getCategory().setExampleItem(item1_1);
s = openSession();
tx = s.beginTransaction();
Item item1Merged = (Item) s.merge(item1);
// the many-to-one from the top level item will win.
assertEquals(category.getName(), item1Merged.getCategory().getName());
assertSame(item1Merged, item1Merged.getCategory().getExampleItem());
tx.commit();
s.close();
s = openSession();
tx = s.beginTransaction();
item1 = (Item) s.get(Item.class, item1.getId());
assertEquals(category.getName(), item1.getCategory().getName());
assertSame(item1, item1.getCategory().getExampleItem());
tx.commit();
s.close();
cleanup();
}
@Test
@FailureExpected(jiraKey = "HHH-9239")
public void testNestedUnidirOneToManyBackrefWithRemovedElement() {
Item item1 = new Item();
item1.setName("item1 name");
SubItem subItem1 = new SubItem();
subItem1.setName("subItem1 name");
item1.getSubItemsBackref().add(subItem1);
SubItem subItem2 = new SubItem();
subItem2.setName("subItem2 name");
item1.getSubItemsBackref().add(subItem2);
Session s = openSession();
Transaction tx = s.beginTransaction();
s.persist(item1);
tx.commit();
s.close();
// get another representation of item1
s = openSession();
tx = s.beginTransaction();
Item item1_1 = (Item) s.get(Item.class, item1.getId());
Hibernate.initialize(item1_1.getSubItemsBackref());
tx.commit();
s.close();
// remove subItem1 from the nested Item
item1_1.getSubItemsBackref().remove(subItem1);
Category category = new Category();
category.setName("category");
item1.setCategory(category);
category.setExampleItem(item1_1);
s = openSession();
tx = s.beginTransaction();
Item item1Merged = (Item) s.merge(item1);
// the element should have been removed
assertEquals(1, item1Merged.getSubItemsBackref().size());
assertTrue(item1Merged.getSubItemsBackref().contains(subItem2));
tx.commit();
s.close();
s = openSession();
tx = s.beginTransaction();
item1 = (Item) s.get(Item.class, item1.getId());
assertEquals(1, item1.getSubItemsBackref().size());
assertTrue(item1.getSubItemsBackref().contains(subItem2));
// because cascade includes "delete-orphan" the removed SubItem should have been deleted.
subItem1 = (SubItem) s.get(SubItem.class, subItem1.getId());
assertNull(subItem1);
tx.commit();
s.close();
cleanup();
}
@Test
// @FailureExpected( jiraKey = "HHH-9106" )
public void testTopLevelUnidirOneToManyNoBackrefWithRemovedElement() {
Category category1 = new Category();
category1.setName("category1 name");
SubCategory subCategory1 = new SubCategory();
subCategory1.setName("subCategory1 name");
category1.getSubCategories().add(subCategory1);
SubCategory subCategory2 = new SubCategory();
subCategory2.setName("subCategory2 name");
category1.getSubCategories().add(subCategory2);
Session s = openSession();
Transaction tx = s.beginTransaction();
s.persist(category1);
tx.commit();
s.close();
// get another representation of category1
s = openSession();
tx = s.beginTransaction();
Category category1_1 = (Category) s.get(Category.class, category1.getId());
tx.commit();
s.close();
assertFalse(Hibernate.isInitialized(category1_1.getSubCategories()));
Item item = new Item();
item.setName("item");
category1.setExampleItem(item);
item.setCategory(category1_1);
category1.getSubCategories().remove(subCategory1);
s = openSession();
tx = s.beginTransaction();
Category category1Merged = (Category) s.merge(category1);
assertEquals(1, category1Merged.getSubCategories().size());
assertTrue(category1Merged.getSubCategories().contains(subCategory2));
tx.commit();
s.close();
s = openSession();
tx = s.beginTransaction();
category1 = (Category) s.get(Category.class, category1.getId());
assertEquals(1, category1.getSubCategories().size());
assertTrue(category1.getSubCategories().contains(subCategory2));
// cascade does not include delete-orphan, so subCategory1 should still be persistent.
subCategory1 = (SubCategory) s.get(SubCategory.class, subCategory1.getId());
assertNotNull(subCategory1);
tx.commit();
s.close();
cleanup();
}
@Test
@FailureExpected(jiraKey = "HHH-9239")
public void testNestedUnidirOneToManyBackrefWithNewElement() {
Item item1 = new Item();
item1.setName("item1 name");
SubItem subItem1 = new SubItem();
subItem1.setName("subItem1 name");
item1.getSubItemsBackref().add(subItem1);
Session s = openSession();
Transaction tx = s.beginTransaction();
s.persist(item1);
tx.commit();
s.close();
// get another representation of item1
s = openSession();
tx = s.beginTransaction();
Item item1_1 = (Item) s.get(Item.class, item1.getId());
Hibernate.initialize(item1_1.getSubItemsBackref());
tx.commit();
s.close();
Category category = new Category();
category.setName("category");
item1.setCategory(category);
// Add a new SubItem to the Item representation that will be in a nested association.
SubItem subItem2 = new SubItem();
subItem2.setName("subItem2 name");
item1_1.getSubItemsBackref().add(subItem2);
category.setExampleItem(item1_1);
s = openSession();
tx = s.beginTransaction();
Item item1Merged = (Item) s.merge(item1);
// The resulting collection should contain the added element
assertEquals(2, item1Merged.getSubItemsBackref().size());
assertEquals("subItem1 name", item1Merged.getSubItemsBackref().get(0).getName());
assertEquals("subItem2 name", item1Merged.getSubItemsBackref().get(1).getName());
tx.commit();
s.close();
s = openSession();
tx = s.beginTransaction();
item1 = (Item) s.get(Item.class, item1.getId());
assertEquals(2, item1.getSubItemsBackref().size());
assertEquals("subItem1 name", item1.getSubItemsBackref().get(0).getName());
assertEquals("subItem2 name", item1.getSubItemsBackref().get(1).getName());
tx.commit();
s.close();
cleanup();
}
@Test
// @FailureExpected( jiraKey = "HHH-9106" )
public void testTopLevelUnidirOneToManyBackrefWithRemovedElement() {
Item item1 = new Item();
item1.setName("item1 name");
SubItem subItem1 = new SubItem();
subItem1.setName("subItem1 name");
item1.getSubItemsBackref().add(subItem1);
SubItem subItem2 = new SubItem();
subItem2.setName("subItem2 name");
item1.getSubItemsBackref().add(subItem2);
Session s = openSession();
Transaction tx = s.beginTransaction();
s.persist(item1);
tx.commit();
s.close();
// get another representation of item1
s = openSession();
tx = s.beginTransaction();
Item item1_1 = (Item) s.get(Item.class, item1.getId());
tx.commit();
s.close();
assertFalse(Hibernate.isInitialized(item1_1.getSubItemsBackref()));
Category category = new Category();
category.setName("category");
item1.setCategory(category);
category.setExampleItem(item1_1);
// remove subItem1 from top-level Item
item1.getSubItemsBackref().remove(subItem1);
s = openSession();
tx = s.beginTransaction();
Item item1Merged = (Item) s.merge(item1);
// entity should have been removed
assertEquals(1, item1Merged.getSubItemsBackref().size());
tx.commit();
s.close();
s = openSession();
tx = s.beginTransaction();
item1 = (Item) s.get(Item.class, item1.getId());
assertEquals(1, item1.getSubItemsBackref().size());
subItem1 = (SubItem) s.get(SubItem.class, subItem1.getId());
// cascade does not include delete-orphan, so subItem1 should still be persistent.
assertNotNull(subItem1);
tx.commit();
cleanup();
}
/** 2.要素の開始タグ読み込み時 */
public void startElement(String uri, String localName, String qName, Attributes attributes) {
// System.out.println("要素開始:" + qName + ", ");
if ("Item".equals(qName)) {
tmpItem = new Item();
tmpItem.setCategory(category);
}
currentQName3 = currentQName2;
currentQName2 = currentQName;
currentQName = qName;
}
@Test
@FailureExpected(jiraKey = "HHH-9240")
public void testTopLevelUnidirOneToManyBackrefWithNewElement() {
Item item1 = new Item();
item1.setName("item1 name");
SubItem subItem1 = new SubItem();
subItem1.setName("subItem1 name");
item1.getSubItemsBackref().add(subItem1);
Session s = openSession();
Transaction tx = s.beginTransaction();
s.persist(item1);
tx.commit();
s.close();
// get another representation of item1
s = openSession();
tx = s.beginTransaction();
Item item1_1 = (Item) s.get(Item.class, item1.getId());
tx.commit();
s.close();
assertFalse(Hibernate.isInitialized(item1_1.getSubItemsBackref()));
Category category = new Category();
category.setName("category");
SubItem subItem2 = new SubItem();
subItem2.setName("subItem2 name");
item1.getSubItemsBackref().add(subItem2);
item1.setCategory(category);
category.setExampleItem(item1_1);
s = openSession();
tx = s.beginTransaction();
// The following will fail due to PropertyValueException because item1 will
// be removed from the inverted merge map when the operation cascades to item1_1.
Item item1Merged = (Item) s.merge(item1);
// top-level collection should win
assertEquals(2, item1.getSubItemsBackref().size());
tx.commit();
s.close();
s = openSession();
tx = s.beginTransaction();
item1 = (Item) s.get(Item.class, item1.getId());
assertEquals(2, item1.getSubItemsBackref().size());
tx.commit();
s.close();
cleanup();
}
@Test
@FailureExpected(jiraKey = "HHH-9239")
public void testNestedUnidirOneToManyNoBackrefWithRemovedElement() {
Category category1 = new Category();
category1.setName("category1 name");
SubCategory subCategory1 = new SubCategory();
subCategory1.setName("subCategory1 name");
category1.getSubCategories().add(subCategory1);
SubCategory subCategory2 = new SubCategory();
subCategory2.setName("subCategory2 name");
category1.getSubCategories().add(subCategory2);
Session s = openSession();
Transaction tx = s.beginTransaction();
s.persist(category1);
tx.commit();
s.close();
// get another representation of category1
s = openSession();
tx = s.beginTransaction();
Category category1_1 = (Category) s.get(Category.class, category1.getId());
Hibernate.initialize(category1_1.getSubCategories());
tx.commit();
s.close();
category1_1.getSubCategories().remove(subCategory2);
Item item = new Item();
item.setName("item");
category1.setExampleItem(item);
item.setCategory(category1_1);
s = openSession();
tx = s.beginTransaction();
Category category1Merged = (Category) s.merge(category1);
assertEquals(1, category1Merged.getSubCategories().size());
assertTrue(category1Merged.getSubCategories().contains(subCategory2));
tx.commit();
s.close();
s = openSession();
tx = s.beginTransaction();
category1 = (Category) s.get(Category.class, category1.getId());
assertEquals(1, category1.getSubCategories().size());
assertTrue(category1.getSubCategories().contains(subCategory2));
subCategory1 = (SubCategory) s.get(SubCategory.class, subCategory1.getId());
assertNull(subCategory1);
tx.commit();
s.close();
cleanup();
}
@Test
public void testTopLevelEntityNewerThanNested() {
Item item = new Item();
item.setName("item");
Category category = new Category();
category.setName("category");
Session s = openSession();
Transaction tx = s.beginTransaction();
s.persist(item);
s.persist(category);
tx.commit();
s.close();
// Get the Category from a different session.
s = openSession();
tx = s.beginTransaction();
Category category1_2 = (Category) s.get(Category.class, category.getId());
tx.commit();
s.close();
// Get and update the same Category.
s = openSession();
tx = s.beginTransaction();
Category category1_1 = (Category) s.get(Category.class, category.getId());
category1_1.setName("new name");
tx.commit();
s.close();
assertTrue(category1_2.getVersion() < category1_1.getVersion());
category1_1.setExampleItem(item);
item.setCategory(category1_2);
s = openSession();
tx = s.beginTransaction();
try {
// representation merged at top level is newer than nested representation.
category1_1 = (Category) s.merge(category1_1);
fail("should have failed because one representation is an older version.");
} catch (StaleObjectStateException ex) {
// expected
} finally {
tx.rollback();
s.close();
}
cleanup();
}
@Test
// @FailureExpected( jiraKey = "HHH-9106" )
public void testTopLevelUnidirOneToManyNoBackrefWithNewElement() {
Category category1 = new Category();
category1.setName("category1 name");
SubCategory subCategory1 = new SubCategory();
subCategory1.setName("subCategory1 name");
category1.getSubCategories().add(subCategory1);
Session s = openSession();
Transaction tx = s.beginTransaction();
s.persist(category1);
tx.commit();
s.close();
// get another representation of category1
s = openSession();
tx = s.beginTransaction();
Category category1_1 = (Category) s.get(Category.class, category1.getId());
tx.commit();
s.close();
assertFalse(Hibernate.isInitialized(category1_1.getSubCategories()));
SubCategory subCategory2 = new SubCategory();
subCategory2.setName("subCategory2 name");
category1.getSubCategories().add(subCategory2);
Item item = new Item();
item.setName("item");
category1.setExampleItem(item);
item.setCategory(category1_1);
s = openSession();
tx = s.beginTransaction();
Category category1Merged = (Category) s.merge(category1);
assertEquals(2, category1Merged.getSubCategories().size());
tx.commit();
s.close();
s = openSession();
tx = s.beginTransaction();
category1 = (Category) s.get(Category.class, category1.getId());
assertEquals(2, category1.getSubCategories().size());
tx.commit();
s.close();
cleanup();
}
@Test
public void testNestedDiffBasicProperty() {
Item item1 = new Item();
item1.setName("item1 name");
Category category = new Category();
category.setName("category");
item1.setCategory(category);
category.setExampleItem(item1);
Session s = openSession();
Transaction tx = s.beginTransaction();
s.persist(item1);
tx.commit();
s.close();
// get another representation of item1
s = openSession();
tx = s.beginTransaction();
Item item1_1 = (Item) s.get(Item.class, item1.getId());
tx.commit();
s.close();
// change basic property of nested entity
item1_1.setName("item1_1 name");
// change the nested Item to be the copy with the new name
item1.getCategory().setExampleItem(item1_1);
s = openSession();
tx = s.beginTransaction();
Item item1Merged = (Item) s.merge(item1);
// the name from the top level item will win.
assertEquals(item1.getName(), item1Merged.getName());
tx.commit();
s.close();
s = openSession();
tx = s.beginTransaction();
Item item1Get = (Item) s.get(Item.class, item1.getId());
assertEquals(item1.getName(), item1Get.getName());
tx.commit();
s.close();
cleanup();
}
@Test
public void testTopValueCollectionWithChangedElements() {
Item item1 = new Item();
item1.setName("item1 name");
Category category = new Category();
category.setName("category");
item1.getColors().add("red");
item1.setCategory(category);
category.setExampleItem(item1);
Session s = openSession();
Transaction tx = s.beginTransaction();
s.persist(item1);
tx.commit();
s.close();
// get another representation of item1
s = openSession();
tx = s.beginTransaction();
Item item1_1 = (Item) s.get(Item.class, item1.getId());
tx.commit();
s.close();
// add an element to collection in nested entity
item1.getColors().add("blue");
item1.getCategory().setExampleItem(item1_1);
s = openSession();
tx = s.beginTransaction();
Item item1Merged = (Item) s.merge(item1);
// the collection from the top level item will win.
assertEquals(2, item1Merged.getColors().size());
assertTrue(item1Merged.getColors().contains("red"));
assertTrue(item1Merged.getColors().contains("blue"));
tx.commit();
s.close();
s = openSession();
tx = s.beginTransaction();
item1 = (Item) s.get(Item.class, item1.getId());
assertEquals(2, item1.getColors().size());
assertTrue(item1.getColors().contains("red"));
assertTrue(item1.getColors().contains("blue"));
Hibernate.initialize(item1.getCategory());
tx.commit();
s.close();
// get another representation of item1
s = openSession();
tx = s.beginTransaction();
item1_1 = (Item) s.get(Item.class, item1.getId());
tx.commit();
s.close();
// remove the existing elements from collection in nested entity
item1.getColors().clear();
item1.getCategory().setExampleItem(item1_1);
s = openSession();
tx = s.beginTransaction();
item1Merged = (Item) s.merge(item1);
// the collection from the top level item will win.
assertTrue(item1Merged.getColors().isEmpty());
tx.commit();
s.close();
s = openSession();
tx = s.beginTransaction();
item1 = (Item) s.get(Item.class, item1.getId());
assertTrue(item1.getColors().isEmpty());
tx.commit();
s.close();
cleanup();
}
@Test
public void testCascadeFromDetachedToGT2DirtyRepresentations() {
Item item1 = new Item();
item1.setName("item1");
Category category1 = new Category();
category1.setName("category1");
item1.setCategory(category1);
Hoarder hoarder = new Hoarder();
hoarder.setName("joe");
Session s = openSession();
Transaction tx = session.beginTransaction();
s.persist(item1);
s.persist(hoarder);
tx.commit();
s.close();
// Get another representation of the same Item from a different session.
s = openSession();
Item item1_1 = (Item) s.get(Item.class, item1.getId());
s.close();
// item1 and item1_1 are unmodified representations of the same persistent entity.
assertFalse(item1 == item1_1);
assertTrue(item1.equals(item1_1));
// Get another representation of the same Item from a different session.
s = openSession();
Item item1_2 = (Item) s.get(Item.class, item1.getId());
s.close();
// item1_1 and item1_2 are unmodified representations of the same persistent entity.
assertFalse(item1 == item1_2);
assertTrue(item1.equals(item1_2));
item1_1.setName("item1_1");
item1_2.setName("item1_2");
// Update hoarder (detached) to references both representations.
item1.getCategory().setExampleItem(item1_2);
hoarder.getItems().add(item1);
hoarder.setFavoriteItem(item1_1);
hoarder.getFavoriteItem().getCategory();
s = openSession();
tx = s.beginTransaction();
hoarder = (Hoarder) s.merge(hoarder);
assertEquals(1, hoarder.getItems().size());
assertSame(hoarder.getFavoriteItem(), hoarder.getItems().iterator().next());
assertSame(hoarder.getFavoriteItem(), hoarder.getFavoriteItem().getCategory().getExampleItem());
assertEquals(item1.getId(), hoarder.getFavoriteItem().getId());
assertEquals(item1.getCategory(), hoarder.getFavoriteItem().getCategory());
assertEquals(item1.getName(), hoarder.getFavoriteItem().getName());
tx.commit();
s.close();
s = openSession();
tx = s.beginTransaction();
hoarder = (Hoarder) s.merge(hoarder);
assertEquals(1, hoarder.getItems().size());
assertSame(hoarder.getFavoriteItem(), hoarder.getItems().iterator().next());
assertSame(hoarder.getFavoriteItem(), hoarder.getFavoriteItem().getCategory().getExampleItem());
assertEquals(item1.getId(), hoarder.getFavoriteItem().getId());
assertEquals(item1.getCategory(), hoarder.getFavoriteItem().getCategory());
tx.commit();
s.close();
cleanup();
}