shamgod

2016年4月8日

JavaPersistenceWithHibernate第二版笔记-第七章-004Mapping a map(@MapKeyEnumerated 、 @MapKeyTemporal、@MapKeyColumn)

摘要：一、结构二、代码 1. 2. 3. 阅读全文

posted @ 2016-04-08 18:16 shamgod 阅读(561) 评论(0) 推荐(0)

JavaPersistenceWithHibernate第二版笔记-第七章-003Mapping an identifier bag(@OrderColumn、@ElementCollection、@CollectionTable、、)

摘要：一、结构二、代码 1. 2. 3. 不足之处，无论插入还是删除元素，Hibernate都需要update其他元素的位置阅读全文

posted @ 2016-04-08 18:08 shamgod 阅读(1443) 评论(0) 推荐(0)

JavaPersistenceWithHibernate第二版笔记-第七章-002Mapping an identifier bag(@CollectionId、@ElementCollection、@CollectionTable、@Type)

摘要：一、结构 A bag is an unordered collection that allows duplicate elements, like the java.util.Collection interface. Curiously, the Java Collections framewo 阅读全文

posted @ 2016-04-08 17:58 shamgod 阅读(384) 评论(0) 推荐(0)

JavaPersistenceWithHibernate第二版笔记-第七章-001Mapping a set(@ElementCollection、@CollectionTable、@JoinColumn、)

摘要：一、结构二、代码 1. 2. It doesn’t seem likely that you’d allow the user to attach the same image more than once to the same item, 阅读全文

posted @ 2016-04-08 17:39 shamgod 阅读(1889) 评论(0) 推荐(0)

JavaPersistenceWithHibernate第二版笔记-第六章-Mapping inheritance-009Polymorphic collections(@OneToMany(mappedBy = "user")、@ManyToOne、)

摘要：一、代码 1. 2. 3. 4. 5.测试阅读全文

posted @ 2016-04-08 15:21 shamgod 阅读(248) 评论(0) 推荐(0)

JavaPersistenceWithHibernate第二版笔记-第六章-Mapping inheritance-008Polymorphic many-to-one associations(@ManyToOne、@Inheritance、)

摘要：一、结构二、代码 1. 2. 3. 4. 5.测试阅读全文

posted @ 2016-04-08 15:12 shamgod 阅读(198) 评论(0) 推荐(0)

JavaPersistenceWithHibernate第二版笔记-第六章-Mapping inheritance-007Inheritance of embeddable classes(@MappedSuperclass、@Embeddable、@AttributeOverrides、、)

摘要：一、结构二、代码 1. 2. 3. 4. 5. 阅读全文

posted @ 2016-04-08 14:27 shamgod 阅读(568) 评论(0) 推荐(0)

JavaPersistenceWithHibernate第二版笔记-第六章-Mapping inheritance-006Mixing inheritance strategies(@SecondaryTable、@PrimaryKeyJoinColumn、<join fetch="select">)

摘要：一、结构 For example, you can map a class hierarchy to a single table, but, for a particular subclass, switch to a separate table with a foreign key–mappi 阅读全文

posted @ 2016-04-08 11:52 shamgod 阅读(398) 评论(0) 推荐(0)

2016年4月7日

JavaPersistenceWithHibernate第二版笔记-第六章-Mapping inheritance-005Table per subclass with joins(@Inheritance(strategy = InheritanceType.JOINED)、@PrimaryKeyJoinColumn、)

摘要：一、结构 The fourth option is to represent inheritance relationships as SQL foreign key associations. Every class/subclass that declares persistent proper 阅读全文

posted @ 2016-04-07 22:09 shamgod 阅读(396) 评论(0) 推荐(0)

JavaPersistenceWithHibernate第二版笔记-第六章-Mapping inheritance-004Table per class hierarchy(@Inheritance..SINGLE_TABLE)、@DiscriminatorColumn、@DiscriminatorValue、@DiscriminatorFormula)

摘要：一、结构 You can map an entire class hierarchy to a single table. This table includes columns for all properties of all classes in the hierarchy. The valu 阅读全文

posted @ 2016-04-07 21:40 shamgod 阅读(960) 评论(0) 推荐(0)

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