1. problem with mapping inheritance! forum.hibernate.orgMapping documents: Hi every one! Ive got a problem with mapping inheritance: User.hbm.xml(This xml file, contains mapping for both user and lab classes, lab extends user): |
2. Inheritance forum.hibernate.orgI have a class B which extands class A. I am writing a HQL using these two classes. In B's mapping file i have only B's fields. When I execute the HQL A is replaced with B and I am getting exception that the field info is not found. like SELECT a,b,c FROM A a, B b, C c Where a.id ... |
3. Question regarding inheritance forum.hibernate.org@Entity @Table(name = "OBJECT") public class DataObject { .. @OneToMany(cascade = { CascadeType.ALL }) @MapKey(name="alias") private Map |
4. Question on mixing inheritance strategies forum.hibernate.orgHi: all: I am developing 3 classes, and they look like this: Class A{ long id; ..... } Class B extends A { String name; .... } For this inheritence, I am using table-per-class-hierarchy by using |
5. Inheritance and Hibernate.initialize forum.hibernate.orgHi, I'm having a problem with two one-to-many associations. These associations are with two subclasses of the same object. The problem occurs when I load my object, when Hibernate.initilize is executed an exception is thrown: org.hibernate.WrongClassException: Object with id: 4700. The id refers to an object of the other association. I saw the log and actually the id of the discriminator ... |
6. hibernate mapping for inheritance forum.hibernate.org |
7. Many-to-many to a inherited object retrieves all objects... forum.hibernate.orgHibernate version: 3.2.2 GA Mapping documents: UsuarioFront has 4 or 5 sets of MasterTable objects mapped as unidirectional many-to-many's. A MasterTable stores info in a class-per-hierarchy inheritance model, using a String discriminator. For readability purposes, only one set is shown in the code. Code: @Entity @PrimaryKeyJoinColumn(name="ID") @Table(name= "USUARIO_FRONT") public class UsuarioFront extends User implements Serializable { private Set |
8. Trouble with multiple inheritance forum.hibernate.orgExplanation of answers below Billable is an interface which is implemented by Advertiser and AffiliateUser. We do this so when we bill a user, we can use the interface instead of having to write extra code for both classes. The problem is that the concrete instance of this class is already mapped elsewhere, so I am getting this DuplicateMappingException. I looked ... |
9. Inheritance problem forum.hibernate.orgHibernate version: 3.2.2 Hibernate Annotations version: 3.3.0.GA Hibernate EntityManager version: 3.3.0.GA Database: MySql 5.0.27 JRE: 1.5.0_07 (Java HotSpot(TM) Server VM (build 1.5.0_07-87, mixed mode)) I'm having a problem loading objects where an inheritance hierarchy is involved. I have three entity types: Account WalletAccount extends Account InternalAccount extends WalletAccount None of these are abstract - an entity can be one of any ... |
10. not-found, map, inheritance forum.hibernate.orgi have classes like: class X{ map |
11. Problem with Inheritance forum.hibernate.orgHi, With a Inheritance strategy : table per subclass, I got the one super class A, which has two sub classes B, C. I try to retrieve a java.util.List of "C" from my database with hibernate but his class is A$$EnhancerByCGLIB$$ and in the Eclipse debug it is C. How can I Get C as type ?. Is it because I ... |
12. Newbie: inheritance mapping problem forum.hibernate.orgAuthor Message monique Post subject: Newbie: inheritance mapping problem Posted: Mon Jun 11, 2007 8:28 am Newbie Joined: Mon Jun 11, 2007 6:18 am Posts: 1 I need to refactor an existing application mappings. The trouble arises with the hierarchy: Movimento --> MovimentoIncasso Movimento --> MovimentoCassa Movimento --> MovimentoAttivo --> Fattura in database there are 3 tables : one ... |
13. inheritance mapping is failed forum.hibernate.orgI want to use inheritance mapping, but I am failed. Code: |
14. EHCaching and Inheritance? forum.hibernate.org |
15. preventing hibernate from creating cols from inherited props forum.hibernate.org |
16. How to Map Inherited Classes forum.hibernate.orgHi, maybe someone can give me a little jumpstart on the following problem: What i want to do is to build a base class with a set of fields and methods, that will be used in 3 subclasses. I try to describe the layout as best I can. Base Class Contact Contains Tables ContactID Addresses Phones Faxes Bank Info CreditCard Info ... |
17. inheritance question forum.hibernate.orgIn my project i'm using a table per class Mapping. Everything is working fine, but I have a page tha shows all itens in a single table, and the user identifies the object type by one flag. Like..... for example, we have a table with N payments, Card, cash etc ... all this itens card, cash extends the payment class and ... |
18. inheritance mapping question forum.hibernate.orgHi, I have following problem: Let class BasePerson represent base class of classes PersonA and PersonB. All classes needs to be mapped to single table (table-per-hierarchy), without need for discriminator, because don't want to have repeteable data in "person" table with different discriminator value. Second, BasePerson belong to CORE component, and PersonA belongs to ProjectA and PersonB belongs to ProjectB. Core ... |
19. Problems with inheritance mapping forum.hibernate.orgHi! I have two entities Project and FinishedProject. FinishedProject extends Project. Project has id and name. FinishedProject also has total_effort, iterations, total_loc. I'm ttying to map this association but I receive ecxeption when testing mappings and I can't figure out where is my fault. Please help! Thanks in advance! SQL: CREATE TABLE project( id INT PRIMARY KEY AUTO_INCREMENT NOT NULL, name ... |
20. InstantiationException launched with abstract inheritance forum.hibernate.orgHi, I think I've isolated the problem and I know when it happens but I'm not sure how to solve it. I have an inheritance hierarchy and imagine that A class is an abstract superclass and B is a concrete subclass (in fact I have more concrete classes but it's not specially important). The Java POJOs are defined like this, so ... |
21. InstantiationException with inconsistent inheritance tables forum.hibernate.orgNewbie Joined: Tue Oct 02, 2007 6:41 am Posts: 4 Hi, I have an abstract class PDBElement and two concrete subclasses Residue and Atom which inherits of it. These are my mapping files: Code: |
22. inheritance and queries forum.hibernate.orgHi, I set up an inheritance tree with inheritance type JOINED. The parent object User is a pretty simple one. The Child one Vendor is more complex. So, when I do a return getHibernateTemplate().find("from User where nickName=?", nickName); the query actually shows that it tries to query the vendor table as well. When I retrieve by id I get lots of ... |
23. multi level inheritance tree forum.hibernate.org |
24. Problems with inheritance mapping forum.hibernate.orgHi, I'm trying to implement a simple class inheritance mapping. I have one parent class and two subclasses which are mapped by the table per subclass strategy. The mapping looks like the following: Code: |
25. inheritance *only* on object-side forum.hibernate.orgHi all, I have a situation in which inheritance is only meaningful on the object side: I'd like to write java code around the superclass, but I will only ever query for instances of a subclass. I don't want to have a table for the parent class, because I expect huge numbers of entries on the subclasses and would rather not ... |
26. Inheritance depth? forum.hibernate.orgSay I have a class hierarchy such that Foo is primary superclass, having two subclasses Bar and Baz, and subclass Bar has two further subclasses of its own, Qux and Qax. Can I reflect this in a Hibernate XML mapping file using the table-per-hierarchy? Can a subclass contain further subclasses? The examples I've seen all stop with a single layer of ... |
27. Multi level inheritance forum.hibernate.orgHello forum, I need you solve me one trouble. I need to map the flowwing classes hierarchy: AbstractMachine (Abstract) + TCPIP_Machine (Abstract) + Pick800 + Pick800I + ... in follow versions + USB_Machine + UPick900 + ...in fllow versions We are developing a software that have to transfer and retrieve data to/from some machines. We are designing the database creating only ... |
28. inheritance forum.hibernate.org |
29. Multiple Inheritance Mapping forum.hibernate.orgI have 2 types of objects: UserObject and SchemaObject, which are respectively shown as trees in user UI and admin UI. The problem is that I have Project class which must be in both user UI and admin UI and it has both SchemaObject and UserObject as children. Therefore, I have to refactor my class hierarchy to have multiple inheritance Code: ... |
30. Mapping inheritance in cloned tables forum.hibernate.orgHi all, i've a question for mapping strategy in inheritance case of study. I've read guides and forum, but i can't find this specific case. I'm going to explain you: I have three classes Content ==> Media ==> Image Media is a particular specification of a content, and image is a particular specification of a media. In java code these three ... |
31. Inheritance mapping forum.hibernate.orgBeginner Joined: Mon May 26, 2008 3:34 am Posts: 31 Hello everyone, I am trying to map an inheritance relationship, but i am getting an error. This is my mapping file: Code: |
32. Can an entity inherit from another inherited entity? forum.hibernate.orgHi All, I am working on a Hibernate application and using annotations to define entities in the system. I am now facing a issue in which I am not very clear if the solution I have in mind is possible or not. I would like to know if it is possible to inherit an entity from an already inherited entity? My ... |
33. problem with inheritance forum.hibernate.orgHello everyone. I have encountered a problem with inheritance mapping. Here is my class hierarchy with annotations: @Entity @org.hibernate.annotations.Entity(polymorphism = PolymorphismType.EXPLICIT) @Table(name = "EXECUTORS") @Inheritance(strategy = InheritanceType.SINGLE_TABLE) @DiscriminatorColumn(name = "IS_GROUP", discriminatorType = DiscriminatorType.INTEGER) @Cache(usage = CacheConcurrencyStrategy.READ_WRITE) public abstract class Executor @Entity @DiscriminatorValue(value = "1") final public class Group extends Executor @Entity @DiscriminatorValue(value = "0") public class Actor extends Executor There is ... |
34. Problem with strategies for mapping inheritance forum.hibernate.orgHibernate version:3.2 Name and version of the database you are using:Oracle 10g I have been playing around with the different inheritance mapping strategies outlined in the "Java Persistence with Hibernate" book by Christian Baur and Gavin King, but I am still a little confused about the best strategy for my particular situation. I have tried searching the forum, but can't seem ... |
35. Problems with inheritance forum.hibernate.orgHi: I have a problem with my inheritance model: I have a hierarchical tree containing 64 subclasses in total. This in itself is not bad Except if I try to execute a query on the parent of the tree. Hibernate generates joins to all child tables in the SQL, but I just want the data from the parent entity, not the ... |
36. Adding 'multiple inheritance' in the FAQ forum.hibernate.org |
37. Problem with EntityKey for inheritance mappings forum.hibernate.orgHibernate version: 3.3.0 and 3.2.x Name and version of the database you are using: Oracle 10G Why is the EntityKey class using the rootEntityName instead of the entityName in equals and hashCode? Due to this we get the following problem. We have a abstract base class called Generic with several subclasses e.g G1, G2, G3 mapped as "Table per class hierarchy" ... |
38. Hibernate Inheritance issues forum.hibernate.orgNewbie Joined: Sun Sep 14, 2008 4:00 pm Posts: 1 Hibernate version:3.2.6 Code between sessionFactory.openSession() and session.close():I'm using Spring to do that Name and version of the database you are using: MySQL, version: 5.0.51b-community-nt Hi there, I am having a problem with Hibernate inheritance. In the system that I plan to create, I have three types of objects; a location, and ... |
39. Inheritance problem forum.hibernate.orgHello, I have the following inheritance: The problem is that a Manager can also be a Director, and when that happens I'm getting an org.hibernate.WrongClassException. I'm testing the query with Hibernate Tools and the HQL and generated query is: Code: SELECT DISTINCT m FROM Manager m LEFT JOIN m.foos WHERE m.id = :userId The generated query is: Code: select ... |
40. Querying Inheritance-based tables forum.hibernate.orgHi, I'm new to hibernate and I want to know if this is possible: @MappedSuperclass abstract class generalClass -string name --------------------------------- class firstNarrowClass extends generalClass @Id -long id ---------------------------------- class secondNarrowClass extends generalClass @Id -long id Here are my classes. From these classes, when I try to use HQL and execute the statement "FROM generalClass", it doesn't give me the right ... |
41. Problem with mapping inheritance forum.hibernate.orgAuthor Message Georg26 Post subject: Problem with mapping inheritance Posted: Tue Sep 30, 2008 1:11 pm Newbie Joined: Tue Sep 30, 2008 12:43 pm Posts: 3 Hello, im relative new to hibernate and constantly running into a problem for severall hours now. I hope you can help. Im building up a new web applikation and started developing my domain ... |
42. inheritance and mapping forum.hibernate.orgNewbie Joined: Fri Sep 26, 2008 4:45 am Posts: 17 Hi, I got the following exception while I'm trying to deploy my application Code: org.hibernate.MappingException: Repeated column in mapping for entity: ch.btc.datec.yamina.model.TypeAffaire column: typeCode (should be mapped with insert="fal se" update="false") with the following mapping and entity Code.java Code: @Entity @Inheritance(strategy=InheritanceType.SINGLE_TABLE) @DiscriminatorColumn( name="typeCode", ... |
43. Problem with JPA inheritance forum.hibernate.orgI have a very simple object hierarchy in my app which uses JPA for inheritence: Code: @Entity @Inheritance(strategy=InheritanceType.JOINED) public abstract class Party { private Long id; @Id @GeneratedValue public Long getId() { return id; } ... |
44. Inheritance Mapping: How do I do this? forum.hibernate.org |
45. single table inheritance forum.hibernate.orgI'm using single table inheritance. I'm using annotations as well. When I declare an attribute in one of the subclasses, it is not being added to the table as a field on schema generation. Unfortunately I'm unable to post my source. I have declared the @column (nullable=true) as I understand that the superclass will have this field as null. Other than ... |
46. Problem with multiple levels of inheritance forum.hibernate.orgI am having an issue with a multiple level inheritance problem, and I don't see any documents anywhere that talk about this. I have the following hierarchy Product -> ClientInformation -> PrintJob -> TrifoldBrochure the first three are abstract classes, and are each marked with @MappedSuperclass. the last one is a concrete subclass. I want to have just one table called ... |
47. Reverse enginering and inheritance forum.hibernate.org |
48. Using @DiscriminatorColumn for Inheritance forum.hibernate.orgHi, I am wondering if anyone can help. I have a set of classes Apple, Orange and Banana which all inherit from the Fruit class. I want to use the Single Table Strategy to persist all of the Fruit classes. I understand I can use a @DiscriminatorColumn('FruitType') in the Fruit class and the @DiscriminatorValue('Apple'), @DiscriminatorValue('Orange') and @DiscriminatorValue('Banana') in the Apple, Orange ... |
49. Inheritance question... what is the best way to handle this? forum.hibernate.orgI am just wondering how different people would handle the problem below. I have a Thread table/class that contains multiple Posts. Each Thread and Post have an author, which is associated with a User object. However, there is a Member object that extends the User, to allow for anonymous/unregistered posting. Now, lets say I want to use the following logic: Code: ... |
50. Circular reference on inheritance and one-to-one mapping forum.hibernate.orgHello, I have problems configuring some relationships. I have class SimplePrice and class RolledPrice, the second inherits the first. The cofiguration file is like this: Code: |
51. Will Inheritance Mapping solve my problem? forum.hibernate.org |
52. Is mixing of inheritance strategies possible? forum.hibernate.orgHello, I have a problem with inheritance strategies, namely, I would like to mix two types across one class hierarchy. The class hierarchy is as follows: Code: Participant +-----Person +------Visitor Between Participant and Person, I would like to use the JOINED strategy, and between Person and Visitor, the SINGLE_TABLE strategy. I have ... |
53. Entities, inheritance and cast problems forum.hibernate.org@Entity public class Population { ... private PopulationCriterion rootCriterion; @ManyToOne(optional = false, cascade = {CascadeType.ALL}, fetch = FetchType.LAZY) @JoinColumn(name = "ROOT_CRITERION_FK_") public PopulationCriterion getRootCriterion() { return this.rootCriterion; ... |
54. Combination of inheritance strategies forum.hibernate.orgTry This Code: |