1. Questions @ associations forum.hibernate.org |
2. Any good patterns for association management? forum.hibernate.orgThe question has been haunting me for month. I beleive it's a general one for anyone who wants to expose only interface rather than classes to outside the domain layer. Say we have two interfaces Foo and Bar, there is a one-to-many bidirectional association between them. Code: public interface Bar{ Foo getFoo(); } public interface Foo{ ... |
3. Generified Associations are not supported by hibernate? forum.hibernate.org@Entity @Table(schema = "cmn", name = "tb_lookup") @Inheritance(strategy = InheritanceType.SINGLE_TABLE) @DiscriminatorColumn(name = "fk_lkt", discriminatorType = DiscriminatorType.STRING) @SequenceGenerator(name = SimpleDomainObject.SEQUENCE_ALIAS, allocationSize = 1, sequenceName = "cmn.sq_lookup") public abstract class Lookup extends SimpleDomainObject { @Id private Long id; @Column(name = "title") private String title; ... |
4. association management method forum.hibernate.org |
5. Special one-to-many association forum.hibernate.orgHello everyone. I have a special problem to solve. I have a relationship like this in my database: Code: ____________________ _______________ | table one | ... |
6. Many-to-many-association (set) between 2 "union-subclas forum.hibernate.orgHibernate version: 3.2 Code: |
7. Populating associations from views forum.hibernate.orgHibernate version: Hibernate 3.0 I want to sometimes populate objects and their associations from a view, but also sometimes populate them "normally", allowing Hibernate to generate the SQL and joins. I have a standard parent-child, one-to-many relationship. For existing objects in the database, the normal Hibernate mapping suffices. But for objects that don't yet exist, I have a view that provides ... |
8. many-to-one association forum.hibernate.orgI have class A and class B with the following mapping files: (I use Hibernate 3.1 and HSQLDB 1.8.0) Code: |
9. many-to-many association forum.hibernate.orghi, i must implement a many-to-many association with an attribute put in the bridge table. as example, i have one table "Student" and one table "Courses". I wish to model the set of examinations for each students like that: create table Student(studentId string,....) create table Course(courseId string,...) create table StudentExams(studentId not null, courseId not null, vote string) where (studentId,courseId) is the ... |
10. association with oneself ??? forum.hibernate.orgHi everybody, My problem is very simple : - I have many objects (Entity class) - each Entity can be associated with others Entities Actually, I would like to have a base that looks like : ********* * Entity * ********* * id * * name * * ...etc...* * ****** * *************** * Entities_Links * *************** * entity_id1 * * ... |
11. Confused about associations forum.hibernate.orgI have the following two persistent classes representing tables: public class Item { private int id; private String item; private String description; private List components; } public class ItemComponents { private int id; private String parentItem; private String componentItem; private double quantityPerUnit; } I want to establish an association as follows (I will use SQL syntax:) select * from ItemComponents where ... |
12. Am I working this association correctly? forum.hibernate.orgCould someone please clarify something for me? This code doesn't error, but it doesn't save the 'call' object which is a child of 'checklist'. I would have hoped that when I call 'checklist.getSecurityCalls().put(...)' Hibernate would be smart enough to save (thereby generating the new call PK under the hood) or updating the existing object. Code: ... |
13. Can Hibernate manage my Many-toMany association? forum.hibernate.orgI have defined a MANY-TO-MANY relationship between two entities via a JoinTable. ALERT -------- alertId alertType ALERTCONTACTXREF ----------------------------- alertId contactId CONTACT ------------- contactId contactName The many to many association was defined on the alert entity. So there is this method on the alert entity: @Entity Alert { @Column Long alertId; @Column String alertType; @ManyToMany( fetch=FetchType.EAGER ) @JoinTable( name="ALERTCONTACTXREF", joinColumns= @JoinColumn( name="ALERTID", ... |
14. Association doesn't get retrieved. forum.hibernate.orgI have a user object with a many-to-many relationship table user_relationship. When I call user.getRelations(), it's null in the set. Any idea why? Is there something wrong in the "relations" mapping? Thanks. Here is the table DDL: CREATE TABLE user_relationship ( `id` VARCHAR(48) NOT NULL, `user_id` VARCHAR(48) NOT NULL, `friend_id` VARCHAR(48) NOT NULL, `relationship_flag_id` VARCHAR(2) NOT NULL DEFAULT 'F', PRIMARY KEY(`id`), ... |
15. many-to-many association forum.hibernate.orgIs there a possibility to remove rows in a many-to-many table created in hibernate? I've a Member table and a Publication table and the belonging link-table (member-publication table) So i've something like that in Member_publication table: Member_Id Publication_Id 1 ----> 2 1 ----> 3 2 ----> 2 That means member with id 1 has worked in publication 2 and 3 and ... |
16. Many-to-one associations for Hibernate forum.hibernate.orgFormula and |
17. NO CLUE: Aggregate, Association.... forum.hibernate.orgI have a similar probliem like this: Ship stores containers, container holds boxes, boxes have a weight. I now want to load those ships that have a total weight less than 100 tons. In SQL it would be something like: SELECT ship_id FROM ship, container, box WHERE ship.ship_id = (+)conatiner.ship_id AND container.container_id = (+)box.container_id GROUP BY ship.ship_id HAVING SUM(box.weight) < 100 ... |
18. birdirectional association doubt forum.hibernate.orgDear ALl, I am a newbie. I am struck with a very basic doubt in Hibernate, Let say we have two entities Customer and Account. Customer can have multiple accounts. Also, in two entities, we have bidirectional association. Now, given customerId, I can fetch customer and then accounts. Now, because association is bidirectional, we should be able to fetch account ... |
19. Newbie with question about one-to-many associations forum.hibernate.orgNewbie Joined: Tue Dec 05, 2006 7:40 am Posts: 14 Hi all, I was trying run examples from hibernate tutorial http://www.hibernate.org/hib_docs/v3/reference/en/html/associations.html 7.2.3. one to many my class map configuration: Code: |
20. One-to-one Association Question [2] forum.hibernate.orgHi All, I have been following the Hibernate Annotation document and have been experimenting with the one-to-one relationship to see which one fits for me. I definitely did not go with the association table because that is definitely not the way. I am doing the first one which is one-to-one association using shared primary keys. Everything is working when it comes ... |
21. QueryByExample with associations ? forum.hibernate.orgHi , I'm trying to achieve: Get all employees with the given manager. I am using hibernate Query By Example . But it is not returning any results. Employee employee = new Employee(); employee.setEmployeeName("ABC"); employee.setManager(manager); Criteria criteria = session.createCriteria(Employee.class). add(Example.create(employee ).excludeZeroes()); if(employee .getManager() != null) { criteria.createCriteria("manager").add( Example.create(employee .getManager()).excludeZeroes()); } Here are my POJOs. public Employee() extends Subordinate{ private String employeeName; ... |
22. many-to-many unidirec. association with multiple fetches pro forum.hibernate.orgNewbie Joined: Wed Sep 12, 2007 6:58 pm Posts: 2 Hi All, I have a problem with Hibernate. I spent several weeks trying to figure out what the problem is including browsing through this forum. I have a many-to-many unidirectional association between an entity A and B. So A holds several instances of B in a set, but B has no ... |
23. Hibernate Association forum.hibernate.orgSorry.. I haven't understand good.. where I must add that property? In serviceBasket? If yes, in Basket Imust not set nothing? Then, if I add that property (many-to-one), Imust add some code (of getting and setting) in java code? Thanks, Francesco This is my xml map : |
24. to new or not when comes to association? forum.hibernate.orgHi, I have some classes/code like this: public class Item { private Long id; private List |
25. CompositeUserType containing a may-to-one association forum.hibernate.orgI am trying to implement the CompositeUserType containing a many-to-one association, however I am unable to find any documentation on how to map this in my hbm files. Does anyone know how to do this? Here is an example: Code: |
26. Many to Many association forum.hibernate.orggetting EXCEPTION: ORA-00904: "ELT": invalid identifier while persisting a SET refrence to associated object. example: 1)---------------:classes:--------- class 1: public class Student implements Serializable { Integer id; String firstName; String lastName; Set courses; } class 2: public class Courses implements Serializable { private int id; private String course_name; private Set students; } 2)-------tables---------- table 1: Student(studentId PK,firstName,lastName) table 2: Courses(courseId PK,course_name) table ... |
27. reg:Many to one association forum.hibernate.org |
28. Association forum.hibernate.orgHi frndz, I am not familar in Association. Even tough i got little bit of idea from net. My Requirment is I have three table. Table1 Table2 Table3 Table1 is related with Table2 by one-to-many association. Table 2 is related with Table3 by one-to-one association. am going to save the Table1 object. It has to automatically save the data in table2,table3 ... |
29. How to page results from a Set-based association? forum.hibernate.org |
30. one-to-many association forum.hibernate.orgNewbie Joined: Thu May 01, 2008 4:53 pm Posts: 11 Hi Every One, I am using hibernate3.2.6 and oracle 10g and eclipse.I created general Java project in eclipse.I created two classes Event,Event_Organizer for two tables EVENTS and EVENT_ORGANIZERS. Here is my event.hbm.xml file: Code: ... |
31. many to many with association - need help forum.hibernate.orghi, I am new to the hibernate and trying to establish many to many relationship with association table. I have two tables A. Signal B. Force Signal can hv many forces and vice versa. i will have the association table called signalForce which is having extra information (Extra fields) called imactDirection and comment. i have also one component called project which ... |
32. Many-to-one association help forum.hibernate.orgHibernate version: 3.0 Name and version of the database you are using: Oracle 10g I am having trouble speeding up a simple many-to-one association, mapped with the following .hbm.xml configuration files: Each one of these (Associates)... Code: |
33. Help with one-to-one association forum.hibernate.orgPage 1 of 1 [ 1 post ] Previous topic | Next topic Author Message chachany Post subject: Help with one-to-one association Posted: Wed Jul 09, 2008 11:13 pm Newbie Joined: Wed Jul 09, 2008 4:12 pm Posts: 3 Hi there I'm having a problem figuring out (even after reading this ... |
34. Pesistence Of Simple Association forum.hibernate.org |
35. Many-to-one association confusion forum.hibernate.orgHi, I have 2 classes (1) Designation (2) Responsibility. A designation can have multiple responsibilities, so I created a Set for the same in the Designation Class to get all the responsibilities for a Designation. Below are the details: Class Designation { private Integer id; private String name; private Set |
36. Associations in hibernate forum.hibernate.orgHi I'm working on a small project which makes use of hibernate and spring mvc. I have a table by name 'tickets' it contains three columns namely 'application','component' and 'subcomponent' which are inturn three other tables in database. The relation between other three tables is that each application contains a set of components and each component contains a set of subcomponents. ... |
37. Advanced Hibernate Feat.s - Associations with ClassHierarchy forum.hibernate.org |
38. Many to many association forum.hibernate.orgI have a problem with a many-to-many association with Strings, whose not the id of the classes. My hbm-config; |
39. one-to-one associations in Hibernate forum.hibernate.orgIs it possible to declare in Hibernate a perfect one-to-one association between a shared primary key, this is, all the values in a PK column need to be exactly the same in another PK column. Generally, a one-to-one mapping defines a foreign key such as in the book, p. 279), but it just enforces that the ADDRESS_ID values appear in the ... |
40. Possible to use @SqlResultSetMapping with associations? forum.hibernate.org |
41. Item - Bid with a successfulBid association forum.hibernate.orgHi, I am trying to get the example from "Java Persistence with Hibernate" (2007 edition) to run: an Item can have zero, one, or more Bids and it can have a successfulBid. Here's my approach: Code: package org.hbf.basics.hibernate; import java.util.ArrayList; import java.util.Collection; import javax.persistence.Column; import javax.persistence.Entity; import javax.persistence.GeneratedValue; import javax.persistence.Id; import javax.persistence.JoinColumn; import javax.persistence.ManyToOne; import javax.persistence.OneToMany; import javax.persistence.OneToOne; import org.hibernate.Session; import ... |
42. Many-to-many association fetched multiple times forum.hibernate.orgNewbie Joined: Wed Feb 14, 2007 11:18 am Posts: 10 Hibernate v 3.2.6. Relationships in question are: PERSON <--- many to many bidirectional with join table ---> Registrations | | one to many | | Donations The Registrations collection is mapped as bag; donations are a Set. Here are snippets from the mapping docs: Code: |
43. Reverse engineering fails to generate association forum.hibernate.orgI'm probably making silly mistakes here, but I couldn't find the right documentation. The problem is that I'm defining an association, but the reverse-engineering process ignores it. Situation Table G913 is a legacy table; it has no primary key but a unique key over the fields WGR and FI_NR. Table REICHW is a table I'm free to redesign as needed. It ... |
44. Multiple one-to-one associations forum.hibernate.org |
45. critera for retrieving many-to-many association forum.hibernate.orgHi all I have a mapping such as A has a m-t-m B. I wish to retrieve all B which belongs to A, which is a very simple task using HQL, but as the filtering restrictions could vary, I'd like to use a criteria. HQL would look like: select b from A a left join a.b b where a.id = 1 ... |