relationship « Composite « JPA Q&A





1. Hibernate: Parent/Child relationship for a single table with composite key    stackoverflow.com

A similiar topic has already been covered, but without the problem of having a composite key in the table. Basically I am trying to get a hierarchy tree out of a single ...

2. one-to-many relationship with table having composite key    stackoverflow.com

This is the full code for mapping of the tables I am doing. But dont know why I am getting java heap space error. I am using Jboss server and the ...

3. Hibernate Mapping One to One relationship with composite id    coderanch.com

Hello, I want to know how to make the one to one relationship in hibernate mapping file(*.hbm.xml) and java classes I have two tables . MainTransaction and SubTransaction MainTransaction Table has four fields 1.Transaction ID (Primary Key) 2.BranchID 3.BranchName 4.BranchAddress BranchID and BranchName are foreinkey to link to SubTransaction Table.. SubTransaction Table has five fields 1.BranchID 2.BranchName 3.Location 4.Activity BranchID and ...

5. Hibernate annotations one to many relationship with composite primary key    coderanch.com

Hello everybody, First of all, kindly look at my design, I have two tables T1(a,b,c,d)- a is primary key T2(a,e) where (a,e) is composite primary key a is the foreign key referencing T1(a) T1 - T2 relationship is one to many. So I created three classes 1. C1 for T1 It has five fields - a,b,c,d, c2Set with setters & getters ...

6. One-to-one relationship with composite primary key    forum.hibernate.org

I am trying to establish a one-to-one relationship between Product and Translation entity classes. Product attributes: - sku (pk) - manuf (pk) - catalog (pk) - (Product attrs) Translation attributes: - sku (pk,fk) - manuf (pk,fk) - catalog (pk,fk) - (Translation attrs) I have a hibernate mapping similar to the following for Product: Code:

9. composite-id with a many-to-one relationship.    forum.hibernate.org

Sorry guys, but I'm trying to understand the cause of this problem. The first table (USERS) has very simple structure: CODE (int) PK NAME (String) The second table (DATA) has a more complex structure: DAY (int) PK CODE (int) PK VALUE1 (int) ... VALUEn (int) are the data there id a one-to-many relationship between the first table and the second table, ...





10. Composite key and one-to-many relationship    forum.hibernate.org

Author Message keviny Post subject: Composite key and one-to-many relationship Posted: Mon Oct 20, 2003 4:28 am Beginner Joined: Wed Aug 27, 2003 6:15 am Posts: 22 Hi all The first table, CMM_CODE_VALUE, has a single-column PK called CODE_VALUE_ID. This table is on the many-side of the relationship. The other table, CMM_SYSTEM_CODE, has a composite key of 2 columns, ...

11. Problem with One-To-One Composite Relationships    forum.hibernate.org

Hi again! I have another problem with Hibernate. I have a class with a one-to-one composite relationship with another class. This second class has a one-to-many relationship with a third class. We have problems with this schema, so when I save in DataBase the parent class (first class) I dont get saved instances of second class (I think the reason is ...

13. Composite Element and Many to one relationships    forum.hibernate.org

Hi there, Forgive me if the answer to my question is already on the forums, I have searched for some time now and havent been able to find equivilent thread. OK. As an example of my problem imagine 3 simple classes. Code: /** Class representing a Geographic region. For example: 'Rocky mountains', 'Patagonia', 'Russian Steppes'. */ Class Region { ...

14. Mapping a composite key one-to-many relationship    forum.hibernate.org

Newbie Joined: Tue Aug 24, 2004 8:41 am Posts: 15 Location: Amersfoort, the Netherlands Hibernate version 2.1 Name and version of the database you are using: MySQL 4.1.3 Hi everyone, I need to know how to write a mapping for the following problem: - Every product in our application has multiple title objects, one per locale. This is stored in a ...

15. Composite Parent/Child Hibernate Zero-To-Many Relationship    forum.hibernate.org

2.1.3 org.springframework.orm.hibernate.HibernateObjectRetrievalFailureException: No row with the given identifier exists: 0, of class: au.edu.tlf.lips.model.RightsType; nested exception is net.sf.hibernate.UnresolvableObjectException: No row with the given identifier exists: 0, of class: au.edu.tlf.lips.model.RightsType net.sf.hibernate.UnresolvableObjectException: No row with the given identifier exists: 0, of class: au.edu.tlf.lips.model.RightsType at net.sf.hibernate.UnresolvableObjectException.throwIfNull(UnresolvableObjectException.java:38) at net.sf.hibernate.impl.SessionImpl.internalLoad(SessionImpl.java:1943) at net.sf.hibernate.type.ManyToOneType.resolveIdentifier(ManyToOneType.java:68) at net.sf.hibernate.type.EntityType.resolveIdentifier(EntityType.java:232) at net.sf.hibernate.impl.SessionImpl.initializeEntity(SessionImpl.java:2194) at net.sf.hibernate.loader.Loader.doQuery(Loader.java:240) at net.sf.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:133) at net.sf.hibernate.loader.Loader.doList(Loader.java:955) at net.sf.hibernate.loader.Loader.list(Loader.java:946) at net.sf.hibernate.hql.QueryTranslator.list(QueryTranslator.java:834) at ...

16. One-to-many relationship and composite-id    forum.hibernate.org

Hibernate Version: 2 People, I have some use cases that we made a MasterDetail cadastre (like employees and their dependents). So, when I delete an employee, hibernate just sets as NULL the foreign key for employee in dependents table, but what i realy wants is that hibernate also delete all dependents for that employee, how can I do that? Does anybody ...





18. Many to many relationship with composite id    forum.hibernate.org

Hi, I'm trying to create a recursive many-to-many relationship. The entity has a composite id with three columns and uses a single foreign field to refer to itself again. I've been trying several combinations for the last day, but as far as I understand the hibernate documentation, perhaps this can't be done with the current database model. Unfortunately, I can't change ...

19. Help with Composite-id and parent/child relationship    forum.hibernate.org

Hi, I am new to hibernate. Checked the references and tutorials but not able to find a solution for my problem. I am unable to insert records in Parent and child relation tables at a time. I have the following tables. Table: Protocol protocol_id number; ( primary key ) protocol_name varchar2(50); Table: Protocol_properties protocol_id number; property_id number; property_value varchar2(50); primary key(protocol_id, ...

20. Many-to-many relationship with composite keys    forum.hibernate.org

Hi, I have a many to many relationship in between Group and Customer classes. Also Group and Customer classes having one-to-one relationship with Marchant class. hbm.xml mapping file as follows.

21. legacy: many/one-to-one relationship with composite key    forum.hibernate.org

Hibernate version: 3.0.5 Mapping documents: Code:

22. Need Help with Composite Id and Many to One relationship    forum.hibernate.org

I'm having a problem with trying to get a many-to-one mapping working. My table structures are as below: Code: create table ISSUE_STATUS_MASTER ( issue_status_id int not null, issue_status_desc varchar(15), primary key (issue_status_id) ) create table issue_stat_history( issue_status_id integer, environment_id integer, stat_date date, issue_count integer, primary key (issue_status_id,environment_id,stat_date) ) create table ENVIRONMENT_MASTER ( environment_id int not null, environment_desc varchar(15), primary key (environment_id) ...

25. how do you create a composite primary key relationship mappi    forum.hibernate.org

it tried this but i get an error Error while initializing hibernate: Could not read mappings from resource: /com//dao/hibernate/Sales.hbm.xml since the column attribute is defined twice in the above and is invalid... ...

26. Composite Key Many-To-One relationship problem    forum.hibernate.org

Author Message debapriya Post subject: Composite Key Many-To-One relationship problem Posted: Wed May 28, 2008 12:09 am Newbie Joined: Wed Apr 30, 2008 6:13 am Posts: 11 I have two tables called . 1)jp_summary SUM_POLNUM SUM_COMPANYCODE these two are composite key and the composite key is there in jp_notes table as foregin key 2)jp_notes My hibernate file for:jp_summary ...

27. Mapping relationship with partial composite key column    forum.hibernate.org

Working on Hibernate 3.2.4ga, calling Oracle 10. It is likely I am not setting this up properly; however, here is my case. I have 2 legacy database tables. The first table is called "TITLES". It contains a fk with the column name "TITL_BOOK_CAT". The second table is called "BOOKCAT_ACCESS" and contains a non-generated/non-sequential composite pk of columns named "BCCA_BOOK_CATEGORY" and "BCCA_ACCESS_LVL". ...

28. Composite keys unidirectional relationship    forum.hibernate.org

Hi, I have the below model ServiceDetails Class @Entity @Table(name = "service_details") @AssociationOverrides( { @AssociationOverride( name="id.serviceId", joinColumns = @JoinColumn(name = "Service_Id")), @AssociationOverride( name="id.bundleId", joinColumns = @JoinColumn(name = "Bundle_Id")) }) public class ServiceDetailsVO implements java.io.Serializable { private ServiceDetailsId id; private Boolean enabled; private Float unitPrice; public ServiceDetailsVO() { } public ServiceDetailsVO(ServiceDetailsId id) { this.id = id; } @EmbeddedId @AttributeOverrides( { @AttributeOverride(name = ...

29. Composite ID with many-to-one relationship. Please help!    forum.hibernate.org

Newbie Joined: Tue Mar 31, 2009 3:04 pm Posts: 2 I have an Animal that visits many Locations. So I have a one-to-many relationship. The hitch is that the LocationTable's unique id is a combination of 3 fields. I'm using the LocationPK class to model the composite id. I have looked for a solution online and have tried many things, but ...

30. JPA - One-to-many relationship with composite primary key    forum.hibernate.org

Newbie Joined: Thu Jul 23, 2009 10:11 am Posts: 2 Hello Everyone, I am trying to create a one-to-many uni-directional relationship between a 'User' entity and a 'PhoneNumber' entity with 'User' at the owning side of the relationship. The 'User' Entity has a compound primary key consisting of a 'username' and 'bsn'. Code: public class User implements java.io.Serializable { ...