reference « Relationship « JPA Q&A

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JPA Q&A » Relationship » reference 

1. Hibernate self-reference    stackoverflow.com

I'm having a problem with Hibernate annotion about self-reference on entity. In my situation, I have a BANK table in database, and each Bank will have a list of other connected Banks ...

2. Getting rid of redundant reference to owner in JPA    stackoverflow.com

I have these entities in JPA + Hibernate, Player and AvatarAttributeOwnership. The former has a Set of the latter, which defines which avatar attributes it owns.

@Entity
public class Player implements Serializable {



 ...

3. referencing another object without sefining a relationship?    forum.hibernate.org

lets say i have a Car object that has a private variable Owner owner and there are no annotation mappings set for that variable. if i retrieve an owner object from the db and then set the Car object's owner variable to it, then persist the Car object, will it hold a reference to that row in the owners table? or ...

4. one-to-many relationship with soft reference ???    forum.hibernate.org

Hi I have a not so peculiar requirement. But I couldnt figure out any way to map this relationship in *.hbm.xml files. Here is the problem. I have 3 tables. TABLE 1 CREATE TABLE entity_one ( oid VARCHAR2(50) NOT NULL, field1 VARCHAR2(50) NOT NULL, field2 VARCHAR2(50), PRIMARY KEY (oid) ); TABLE 2 CREATE TABLE entity_two ( oid VARCHAR2(50) NOT NULL, field1 ...

6. Need help with self-referencing relationship    forum.hibernate.org

I have a table that has a rescursive relationship like this. Table name: User has these columns user_id (pk) depend_user_id (fk) where depend_user_id has recursive assocation with user_id. The Hibernate mapping looks like the following Code: @Entity @Table (name = "USER") public class User { private int userId; private List children; private User parentUser; @Id @Column(name = "USER_ID", length = 4) ...

7. Issue many-to-one relationship with two different references    forum.hibernate.org

Hi, I'm also facing the issue like that. Tables created in MySQL: CREATE TABLE PARTY ( PARTY_ID INTEGER, PARTY_TYPE VARCHAR(60) NOT NULL, CONSTRAINT XPKPARTY PRIMARY KEY (PARTY_ID) )ENGINE=InnoDB DEFAULT CHARSET=latin1; CREATE TABLE ROLE ( ROLE_ID INTEGER, ROLE_TYPE VARCHAR(60) NOT NULL, CONSTRAINT XPKROLE PRIMARY KEY (ROLE_ID) )ENGINE=InnoDB DEFAULT CHARSET=latin1; CREATE TABLE PARTY_ROLE ( ROLE_ID INTEGER, PARTY_ID INTEGER, CONSTRAINT XPKPARTY_ROLE PRIMARY KEY (ROLE_ID, ...

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