1. Unusual Hibernate inheritence mapping stackoverflow.comI've got a curious puzzle with an object-relational mapping, using Java and Hibernate. We have an existing schema that looks something like this: |
2. Hibernate @Id via inheritence stackoverflow.comI'm trying to duplicate something you can do in .Net but not having much luck. Is the following not possible in Java or am I just missing something? When ... |
3. Unable to use inheritence in hibernate stackoverflow.comPlease have a look at the following |
4. Hibernate: Mapping Inheritence coderanch.comThere are many ways to map a hierarchy: all in one table, table per subclass, table per concrete class, etc. I've only used the all-in-one table approach, but the documentation and Hibernate in Action are pretty good about describing these. My hierarchy consists of an abstract Device and two subclasses: TerminalDevice and PortableDevice. I'm using a single-column descriminator (tells Hibernate which ... |
5. hibernate inheritence problem coderanch.comHi I am facing some problem with inheritence table per subclass My Questionaire Class uses it's primary key questionaire_id in the Abstract class Question MultipleChoiceQuestion class extends Question class but the problem is when I insert into questionire that works fine but when I insert into MCSSQuestion class it doesnot insert.Could anyone knows this problem? Here is source code lecturer1=new Lecturers("Alan","asdf","asnd","xyz@cs.ac.bham.uk","asd"); ... |
6. Inheritence in hibernate coderanch.comWell, the question really comes down to OO and not Hibernate. When in Java OO would you find inheritance better than composition, or just that inheritance is the way to go with OO? The "Inheritance in Hibernate" is just that if you have an inheritance tree in Java then it is possible to map it to tables in Hibernate. Mark |
7. Inheritence in JPA coderanch.com |
8. @NamedQuery and @Inheritence using JPA in JSE java.net |
9. Inheritence mapping -use of subclass in another mapping file forum.hibernate.org |
10. Inheritence strategy - can you use both joined and single_ta forum.hibernate.orgI have a class hierarchy that looks something like this: class A is abstract class B is a concrete class, extends A class C is an abstract class, extends A classes C1, C2, and C3 are concrete classes, extends C. C1, C2, C3 have some transient data and do not have any additional data to be stored in the database. I ... |
11. Having issues with joined-subclass (inheritence) forum.hibernate.orgAuthor Message haytham Post subject: Having issues with joined-subclass (inheritence) Posted: Sun Aug 31, 2003 1:44 am Newbie Joined: Sun Aug 31, 2003 1:20 am Posts: 17 I am trying to use HIbernate with my inheritence hierarchy of Person, Parent Student. I have one table per class (I realized that this was not advised but this is the database ... |
12. Inheritence in multiple tables forum.hibernate.orgHi, is it possible to define class and subclass in the mapping, where the subclass rows will saved in a separate table. In the hibernate-mapping-2.0.dtd i found only the possibility to define a table in the class and not in the subclass. Is the strategy save all classes and subclasses in one table the only one supported by hibernate? Regards Axel ... |
13. Query Problem with inheritence forum.hibernate.orgHello, I am facing a problem while firing find query for an inheritence relation. Scenerio is: class Catalog catalog_id, ownerName, Name, description ^ class Query sid, parent_id I want to search query object based on passed filter criteria, some of which are on catalog attributes and some are on query. Code is : Query q = session.createQuery("select catalog from com.aceva.rms.catalog.Query catalog ... |
14. Exception while executing query related to inheritence forum.hibernate.orgI have implemented two classes B and C implements A(interface) schema is like |
15. select-before-update and inheritence forum.hibernate.orgI have a 1:M relationship where the 'many' side is a subclass. I want to use 'select-before-update' to prevent all of the 'many' objects from updating the database when they haven't changed during a saveOrUpdate (don't want triggers triggered). I'm using the detachment approach where I read the object graph in one session, close the session, (may) make changes, then use ... |
16. Using inheritence in the models forum.hibernate.org |
17. inheritence and containment mapping forum.hibernate.org |
18. Mapping a class with multiple inheritence forum.hibernate.orgCan anyone give a hibernate 2.1 example of how to map a class that implements two interfaces? Provided below is how we're mapping a class that is implementing OrderableItem, but we're wanting to have Asset also implement BuilderAsset. We want to be able to use BuilderAsset in Hibernate just as we're able to use OrderableItem. Do we have to include Asset ... |
19. Using setWhere on a collection of entities with Inheritence forum.hibernate.org |
20. Disable automatic inheritence mapping (using Postgresql) forum.hibernate.orgI'm having problems mapping the inheritence using a Postgresql. Since we already in the database (psql support table inheritence) have defined the inheritence between tables, should hibernate not really need to bother with this. But even if I don't specify anything when defining the annotations in the classes hibernate seems to be smart clever enought and finds the hiearchie that we've ... |
21. Inheritence mapping: what's best? subclass, joined-subclass forum.hibernate.orgI'm fairly new to hibernate (just a few weeks) and thought I'd short circuit a few days experimentation by asking what most people find is the best way to do inheritance mapping. I suppose the important considerations for me are (in order of priority): (don't worry if you can't cover all points - any info would be valuable) 1. Ability to ... |
22. Problems with 1:1/n:1 mapping and inheritence: StackOverflow forum.hibernate.orgNeed help with Hibernate? Read this first: http://www.hibernate.org/ForumMailingli ... AskForHelp Hibernate version: 2.1.6 Mapping documents: |
23. use of factories -- architecture problem with inheritence forum.hibernate.orgHello Sebastian, The Factory has meaning on the business side. The implementing classes are easily distinguishable (and buildable) based on a single string which has real user meaning. It's what the client code is presently using. So, as it stands, the Factory is already there and I'd hoped to be able to reuse it rather than maintaining the (effectively same) information ... |
24. one-to-many and inheritence mapping forum.hibernate.orgHi All, When a class has one-to-many relation with 2 sibling classes, and has cascade set to all, the siblings are being persisted with the primary key of the parent class and not their own. detailed explanation: I have a class Owner which has onetomany relations with 2 sibling classes (CalendarEvent and PlannerEvent, which extend TimedEvent). When I try and persist ... |
25. Mapping inheritence to the child.xml instead of parent.xml? forum.hibernate.orgHibernate version: 3.0 I'm trying to create an 'addon' type structure, where I have a Parent.har containing a Parent.class and a Parent.hbm.xml. Code: package mypackage; /** * @hibernate.class * table = "parents" * */ public class Parent { public Parent() { ... |
26. Named queries return duplicate rows with object inheritence forum.hibernate.orgWe have some special cases due to which we had to use this approach. I have a 'Vendor' object which is a persistent class in hibernate mappings. |
27. Help using Hibernate named native queries with inheritence forum.hibernate.org |
28. Mixing annotations and mapping while using inheritence forum.hibernate.orgI am new to annotations and would like to know if its possible to mix annotations with mappings while using inheritance strategies. For (e.g) if I have a hbm mapping file say A.hbm.xml Can I extend A and annotate it? Specifically, can I do something like this: @Entity @Table(name="B") @PrimaryKeyJoinColumn(name=B_id") public class B extends A { @Column(name="newCol", nullable=true, length=50) private String ... |
29. Problem with Inheritence - Noob question forum.hibernate.orgNeed help with Hibernate? Read this first: http://www.hibernate.org/ForumMailingli ... AskForHelp Hibernate version: 3.x Mapping documents: |