inverse 2 « Map « JPA Q&A





1. Lazy Inverse Map Bug?    forum.hibernate.org

Newbie Joined: Thu Feb 08, 2007 9:46 am Posts: 4 Hibernate version: 3.2.1 Mapping documents: Code: ...

2. Inverse one-to-one mapping?    forum.hibernate.org

Hi, I'm trying to do a unidirectional one-to-one mapping for a legacy database where the primary key of the other side of the join is available on the owning side, but not the other way around... Code: class A { // PK String getNewGUID() ... // Regular property known to be unique and ...

3. list with inverse="true"    forum.hibernate.org

there seems to be some confusion as to whether version 3 does support list with inverse="true" without manually taking care of index. I have the follow parent child, User - Event ...

4. WHo can explain Inverse="true" in detail?    forum.hibernate.org

Hi, The both attributes may use in element. Cascade attribute is used to cascade the child entity, while saving/updating/deleting the parent entity. Inverse attribute is used to mention either parent or child entity can take care of the relationship for these entities. for example, - parent entity will take care of relationship handling for child.

5. Deleting inverse flagged many-to-many bidirectional object    forum.hibernate.org

Page 1 of 1 [ 1 post ] Previous topic | Next topic Author Message dmiranda Post subject: Deleting inverse flagged many-to-many bidirectional object Posted: Mon Sep 24, 2007 12:17 pm Newbie Joined: Fri Sep 21, 2007 5:58 pm Posts: 1 Hello, I am new to hibernate and am running into ...

7. one-to-one and inverse many-to-one w/out intermediate entity    forum.hibernate.org

I'm trying to map a one-to-one and one-to-many (or many-to-one) relationship between two entities, through an intermediate table, and it doesn't look like Hibernate supports this mapping without using an intermediate entity to join the two. Here's my schema: CREATE TABLE cap_sets ( cap_set_id serial primary key ); CREATE TABLE cap ( cap_id serial primary key, cap_set_id integer references cap_sets ON ...

8. Meaning of inverse=true    forum.hibernate.org

Hi, ( This is with context to One to Many or Many to Many associations ) I have been reading that inverse=true is used to indicate to hibernate as to which side of the association it needs to manage, because foreign key column is duplicated. I am unable to visualize this scenario, can someone explain this to me, in terms of ...

9. many to one mapping and inverse using JPA    forum.hibernate.org

I want some advice on mapping of the relationship between two entities. The two entities are Organization and person. A person belongs to one organization and an organization has more than one person. I can use manytoOne annotation and map the entities. However when i do that i add a new row of organiztion to the organization table whenever i add ...





10. "only inverse 1:M associations" error on non-inver    forum.hibernate.org

Hibernate version: 3.2 Hi, I have a parent-child relationship between 2 tables CHARGE and REMARK (REMARK references CHARGE with an ON DELETE CASCADE foreign key), here is an excerpt to Charge.hbm.xml: ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ...

11. What happen when I put "inverse=true" in the child    forum.hibernate.org

What happend when I will write "inverse=true" in the child class mapping instead of parent class mapping. For example: An organization have many employee and the mapping file contains following mapping: 1. Employee.hbm contains: 2. Organization.hbm contains: Thanks in ...

12. Initialization of inverse lazy collection - best practice    forum.hibernate.org

Newbie Joined: Wed Feb 14, 2007 11:18 am Posts: 10 Hibernate version: 3.1 Name and version of the database you are using: MySQL 5.0x I have a many-to-many association between Person and Address, mapped using a link table. Persons will share an Address, and Persons sharing an Address are identified as belonging in the same household or company. Thus, Person has ...

13. One-to-many inverse with parent and childs in the same table    forum.hibernate.org

Exception in thread "main" org.hibernate.PropertyAccessException: Exception occurred inside setter of xx.yy.Entry.childs at org.hibernate.property.BasicPropertyAccessor$BasicSetter.set(BasicPropertyAccessor.java:65) at org.hibernate.tuple.entity.AbstractEntityTuplizer.setPropertyValues(AbstractEntityTuplizer.java:337) at org.hibernate.tuple.entity.PojoEntityTuplizer.setPropertyValues(PojoEntityTuplizer.java:200) at org.hibernate.persister.entity.AbstractEntityPersister.setPropertyValues(AbstractEntityPersister.java:3566) at org.hibernate.engine.TwoPhaseLoad.initializeEntity(TwoPhaseLoad.java:129) at org.hibernate.loader.Loader.initializeEntitiesAndCollections(Loader.java:854) at org.hibernate.loader.Loader.doQuery(Loader.java:729) at org.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:236) at org.hibernate.loader.Loader.doList(Loader.java:2220) at org.hibernate.loader.Loader.listIgnoreQueryCache(Loader.java:2104) at org.hibernate.loader.Loader.list(Loader.java:2099) at org.hibernate.loader.criteria.CriteriaLoader.list(CriteriaLoader.java:94) at org.hibernate.impl.SessionImpl.list(SessionImpl.java:1569) at org.hibernate.impl.CriteriaImpl.list(CriteriaImpl.java:283) at xx.yy.zz.hibernate.SpringHibernateMenuDao.getRoots(SpringHibernateMenuDao.java:53) at xx.yy.zz.Test.main(Test.java:55) Caused by: java.lang.reflect.InvocationTargetException at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:597) at org.hibernate.property.BasicPropertyAccessor$BasicSetter.set(BasicPropertyAccessor.java:42) ... 15 more Caused ...

14. doubt on inverse y 2 updt stmnt y cant it b insrt & updt    forum.hibernate.org

hello every one Iam new to hibernate I have doubt on inverse attribute.I read several articles on inverse attribute i understood it partially.But i have few doubts.So can any one please clear my doubt. Say for one to many association which is bi directional With inverse=true at one side ,hibernate synchronizes the "many" side foreign key coloumn to database.So inverse avoids ...

15. inverse attribute my undrstng crrct or not canany one tell ?    forum.hibernate.org

Newbie Joined: Mon Jul 21, 2008 1:08 pm Posts: 3 Location: INDIA Hello everyone, Iam new to hibernate. I have doubt on inverse attribute.I read several articles on inverse attribute i understood it partially.But i have few doubts.So can any please clear my doubt. Say for one to many association With inverse=true at "one" side ,hibernate synchronizes the "many" side (foreign ...

16. understanding inverse    forum.hibernate.org

I have entity Person which has many EmailAddress. Class Person{ Set getEmailAddress(); Class EmailAddress { Person getPerson(); My understanding with inverse,it should be used on many side so I can use inverse=true on getPerson method and this means I make changes to Person from emailAddress and save emailAddress it will not save changes to person is this right ? I tried ...





17. inverse="true" confusion    forum.hibernate.org

.... .... parent has inverse="true" what this means ? here if I add a new child to the set in parent and persists parent will it save the new child ? or the child updates a ...

18. *** inverse="true" exact usecase    forum.hibernate.org

Hi, I have an Account and Detail tables with one-to-many association. Table 1: Name : Account Columns: account_id account_name Table 2: Name: Detail Columns : detail_id detail_name 1) Account is having a SET to maintain Details.Detail will be having a reference to Account.I can get the set of Details from Account object.,from the other side I will be getting account object ...

19. Attributte inverse, what is it for?    forum.hibernate.org

Inverse is the opposite of the Many-to-one association from the object. This prevents Hibernate from sending multiple SQL updates for one change. So if you add an item B to Object As collection of Bs and save it won't make changes you must set Bs parent to A to get it to persist.

20. Newbie.. Confused with hibernate cascade and inverse.    forum.hibernate.org

Hi All, I always wondered what cascade and inverse meant. I will tell what I have understood. Can someone please tell me if I am right or wrong? Assumption: Say there are two tables, parent and child. Parent has cid foreign key to child table's primary key childid. Cascade: None--> If Parent table is inserted with values, then child table is ...

21. Query on many-to-many without inverse option set    forum.hibernate.org

22. Using the inverse attribute on Parent and Child    forum.hibernate.org

23. Bidirectional inverse=true inserts null IDs in child    forum.hibernate.org

Newbie Joined: Wed Jun 17, 2009 5:44 pm Posts: 3 Hi All, I am challenged with this problem for a week and not able to resolve. Help me please.......... Problem description : 1. With following code as is, all child records are getting null IDs (like USER.FIRM_ID, GROUP.FIRM_ID, ROLE.USER_ID, ROLE.GROUP_ID) 2. If I set "inverse=false", then it works, but that is ...

24. "Inverse" Between    forum.hibernate.org

25. Parent being deleted before children despite inverse="true"    forum.hibernate.org

Hi Guys, Believe me, i've read and read and tried and tried :) Hibernate is issuing a delete to my parent Document before it issues a delete to the children Revision. Because revision has a many-to-one not-null="true" on column docId, this causing a constraint exception when the deletion is attempted with getHibernateTemplate().delete(doc) where doc is a fully initialized object + children. ...

26. One-to-Many Bidirectional Inverse Issue    forum.hibernate.org

Suppose i have one-to-many bidirectional association between Category and Item In Category.hbm.xml: and In Item.hbm.xml: Suppose i have a category with 2 items and now i am saving category object. insert into HBLEARN1.CATEGORY (CNAME, CID) values ...

27. issue with inverse=true in my mapping    forum.hibernate.org

Hi, I'll post the relevant part of my mapping. I have two classes : Art and Artist. An Artist owns a collection of Art and an Art belongs to one and only one Artist. The mapping for the Art class : Code:

28. Doubt regarding inverse attribute in hibernate    forums.oracle.com

Hello EveryOne i have doubt regrding inverse attribute in hibernate Say we have 2 classes(mapped to 2 tables respectively) Employee which holds properties like name,age,department_number EmployAddrs which holds street,city,state properties Every Employee has more than one address So Employee has one to many relationship with EmployAddrs. If we set inverse = true ,then biderctional flow of data is allowed.Does it mean ...