class « Relationship « JPA Q&A

1. More than one relationship in two Hibernate Classes stackoverflow.com

Hibernate Gurus, I have a pesky issue and I don't really know how to solve my problem. I have a solution, however, I feel I may be reinventing the wheel. I have two ...

2. Hibernate multiple one-to-many relationships to the same class coderanch.com

I have multiple one-to-many relationships to the same class from a class. Is there a way to Map it? ... -------------------------------------------- class B { public String value; } -------------------------------------------- I just use B to save a ...

3. Many To Many relationship on same class forum.hibernate.org

Hi, I guess it's probably a common issue, but even after searching the forum, I don't find the answer I have an entity User, which contains 2 List One list is Friends, the other Family. Obviously this is a many to many relationship (one guy may have several friends or family, and one of his friend can have other User friend) ...

4. Common Class in a "many-to-many" relationship forum.hibernate.org

Regular Joined: Tue May 04, 2004 6:15 am Posts: 51 :) In the meanwhile I've played with it so things have now changed Hibernate version: 2.1.3 Mapping document Code: ...

5. where does logic for maintaing class relationships go? forum.hibernate.org

I have a class A that has a many-to-1 relationship with B and 1-to-many relationship with class C. Assume tables with class names exist. C has a foreign key to A. and A as a foreign key to B. Now by business needs are that when an instance of A is deleted, the FK column values referencing the A instance in ...

6. Newbie: Class Relationships and Hibernate Config forum.hibernate.org

Hibernate version: 3b4 I have read the docs (and am a little confused), I have also searched the forum (and google) and haven't found the answer to my question, which is: how I can get the below relationship to be mapped DB: user { id not null primary key, username } userdata {username, key, value } userdata.username = user.username however user.username ...

7. Getting relationship problem between classes forum.hibernate.org

Need help with Hibernate? Read this first: http://www.hibernate.org/ForumMailingli ... AskForHelp Hibernate version: Using with spring 1.2.2 Mapping documents: ...

8. many-to-one relationship with two tables but only one class forum.hibernate.org

I have one class: Car { - id:int ... - color:String } And two tables storing the information: CAR [ ID:INTEGER (PK) ... COLOR_ID:INTEGER (FK) ] COLOR [ ID:INTEGER (PK) NAME:STRING ] I've been trying to map the Car class to both tables, without any success. First i tried it with a , but it'd only work if a had the ...

9. Showing one-to-one relationship in annotated entity class forum.hibernate.org

@Entity @Table(name = "rp.batch") public class HBatch { private HBatchId key; public HBatch() { } // Property accessors @EmbeddedId @AttributeOverrides( { @AttributeOverride(name="id", column=@Column(name="id", unique=false, nullable=false, insertable=true, updatable=true) ), @AttributeOverride(name="classId", column=@Column(name="classId", ...

10. Multiple Relationships between two classes forum.hibernate.org

Hi, I'm new to Hibernate and I'm having trouble creating 2 relationships between the same two classes. I can get both relationships working correctly independently, but when I try to combine them I'm getting errors. Lets just say my first class is Items (for sale on an auction website) and my second class is Users The first relationship is a OneToMany, ...

11. One-to-one relationship using the same class forum.hibernate.org

Hi, I have a class named FinancialTransaction with some attributes, like date, amount, etc. But there are 3 that are important here: Type, siblingTransaction and target. The "type" attribute indicates if this is a Debit, Credit or Transfer FinancialTransaction. For Debit and Credit transactions, target and siblingTransaction attributes are irrelevant. But if I have a Transfer transaction I want to create ...