problem « Association « JPA Q&A





1. Grails: Problem with nested associations in criteria builder    stackoverflow.com

I have a frustrating problem with the criteria builder. I have an application in which one user has one calendar, and a calendar has many entries. Seems straightforward enough, but when ...

2. problem with join table association object annotations    stackoverflow.com

to create join table association object annotations here is what I did

public class Candidature_FK implements Serializable{

private  Long idEtudiant;
private  Long idStructure;
...
} and
@Entity
@Table(name="Candidature") @IdClass(Candidature_FK.class) public class Candidature implements Serializable {
public Candidature() {

}

@Id
private  ...

3. Problem with reverse engineering a many-to-one unidirectional association with hibernate tools    stackoverflow.com


I'm using Hibernate tools 3.40 in Eclipse (Helios). I'm trying to generate POJOs from my DB (MSSQL 2008) with EJB3 style (i.e. JPA2.0 annotations).
Let's say I have two tables A and B ...

4. JPA problem one-to-one association cascade= PERSIST    stackoverflow.com

I have this ER model

   Message 0..1 <--> 0..1 MessageDetail
   PK:ID_MESSAGE          PK: ID_DETAIL 
     ...

5. Using One-to-Many associations with H2, JPA annotations and Hibernate Problem    stackoverflow.com

We're using a combination of H2, JPA annotations, Spring and Hibernate to develop our webapp. We're using H2 in compatiability mode with MODE=Oracle. We have an ItSystem class that has an one-to-many ...

6. HIBERNATE: Problem with ASSOCIATION combined with AGGREGATION    coderanch.com

I have a probliem quite like this: A Ship stores containers, a container holds boxes, boxes have a weight. I now want to load those ship objects that have a total weight less than 100 tons. In SQL it would be something like: SELECT ship.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 ...

7. Hibernate problem: One-To-Many association    coderanch.com

...

8. Problem with insertion with in table with associations    forum.hibernate.org

Newbie Joined: Tue Mar 23, 2010 5:32 pm Posts: 7 Hello Everyone, I have two tables Account and Account User. Account User is the child element in the Account table. And Account_Id is the Foreign Key in the Account User. And I am using Sequence generators to generate the primary keys in both the tables . My Account and Account User ...





10. Problem creating bidirection many-to-one association    forum.hibernate.org

...

11. many-to-one association problem    forum.hibernate.org

Thanks for your response shynate26. The query works when I use HQL, though I cannot see any difference in the SQL that Hibernate generates in both cases, see below. SQL generated by query using Criteria: Code: List staffScheduleList = session.createQuery( "from StaffSchedule ss where ss.staffId=:staffIdentifier").setLong("staffIdentifier",staffId).list(); select ...

12. Association problem!    forum.hibernate.org

Newbie Joined: Thu Dec 16, 2010 3:43 am Posts: 3 I'm very new in Hibernate. I can not fully understand the mappings of a association. Problem: I have 2 classes: [*]User [*]UserGroup A user belongs to one group, but a group can include many users. User class: Code: package ir.khorasancustoms.g2g.persistance; public class User { // ...

13. Problem with Many-to-one association and deletion    forum.hibernate.org

I've this bean with annotations (showing the relevant ones): Code: @Entity @Table(name = "Prodotti") @Inheritance(strategy = InheritanceType.SINGLE_TABLE) public class Prodotto { int id; String codice; double prezzo; double prezzoCanone; String descrizione; String note; ...

14. Problem with the Associations.    forum.hibernate.org

Hi, I am mapping few tables using xml based associations. The Condition is such that, when I fetch the data, the data need to be fetched with the condition that the deleted column should be 0 in all the tables, but I can give condition on the main query, so, the cascade select, would apply the filter condition on the first ...

15. Problem with many to one association    forum.hibernate.org

I have a class A and classes B and C which extend A. I have another class D which is member of A and A has many to one reltionship with D. There by B and C also have many-to-one relationship with D. When I try to access D from A, it gives CGLIB related Exception , saying that "Problem setting ...

16. One to Many Association problem    forum.hibernate.org

Hi All, I got a problem when I was mapping two associations 1:N from one entity and I'd like to know if you have an solution. It seens to be quite simple. The diagram is like that: B <-*------ A ------*--> C But when I try so make some operation with C the following exception is raised by the persistence layer: ...





17. Problem with one-to-many association (save)    forum.hibernate.org

hello, I try to make a one-to-many association from a class to itself but I got an error described at the end of this mail. Here is a part of the code of the class : ------JAVA ----------- public class Keyword { protected Set MyKeyWords; ......................................... ......................................... } ------JAVA ----------- ,here is a part of main code : -----JAVA--------------- Set myset ...

18. one-to-many Association Problem...    forum.hibernate.org

Hi guys, I have a strange behavior while updating an object which has a related Set of objects. I have an object "TitrePerception" which owns a Set of "Detail" objects. THis is an unidirectional assocation and the cardinality is 0->n. When I update the "Titreperception" object, Hibernate generates the right SQL update request, but adds another update SQL request on the ...

19. Problem of insertion with association    forum.hibernate.org

I have a class Utilisateur and class Evenement with a one-to-many association with the following code : Code: class Utilisateur { //... Set evenements; //... } class Evenement { //... } The association is uni-directionnal. The mapping ...

20. Problem with multiple one-to-many association and cascade    forum.hibernate.org

Hi, I have this porblem : I have a class A with two different associations towards a class B (ie, one with role1, and one with role2) Then I try to save A, and I want to save or update (or not ) B. So I defined two one-to-many relationship with the option cascade="save-update". But when it happens that the same ...

21. problems with ternary association and cascades    forum.hibernate.org

Hi all, I've been trying to map following scenario with no luck: Code: A--ABC--B | C When any of A, B or C is deleted should ABC be also deleted, but A,B and C should not be deleted (except for the one that was meant to be deleted, of course). I'd ...

22. Many-to-many association problem    forum.hibernate.org

Newbie Joined: Mon Jan 05, 2004 10:46 am Posts: 13 Hi, I have a many-to-many association (Category<->Items). If I look for a Category by Id I get a correct filled Category instance returned with all available Items in this Category, on the other hand if I search for an item I get the correct filled Item instance with all associated categories ...

23. ternary association problem    forum.hibernate.org

Hi, I'm getting a when I try to access a ternary: Code: net.sf.hibernate.MappingException: component class not found net.sf.hibernate.cfg.Binder.bindComponent(Binder.java:764) Here is my mapping file: Code:

24. Web Tier causing multiple session object association problem    forum.hibernate.org

Hi, I have a normal web application where I store a User type of object in the Http Session. When the user accesses a page, I call a Session.lock() on this User object to reassociate it, to assist with any updates or retrievals of lazy loaded data. The problem I have is that some pages may take a short time to ...

25. User / role many-to-many association problem    forum.hibernate.org

Hi, We are using Hibernate 2.0.3 with Hypersonic 1.7.2 database. We try representing a typical User / Role association with following mapping documents. Role mapping file :

26. Problem with reflexive association and second-level cache    forum.hibernate.org

Hi, The reflexive association: /** * Version represents any version of a project * @hibernate.class table="versions" proxy="com.recercai.ricase.change.Version" * @hibernate.cache usage="read-write" */ public class Version extends PersistentObject { /** * String that identifies this version */ private String versionNumber = null; /** * The parent Version */ private Version derivesFrom = null; /** * holds the list of subversions made from this ...

27. problem with associations    forum.hibernate.org

28. Problems invalidating OSCache, cascading associations    forum.hibernate.org

Beginner Joined: Mon Feb 09, 2004 6:49 am Posts: 21 Hi I've been stuck on this issue regarding OSCache and a simple object tree. I'm using Hibernate 2.1.2, OSCache 2.0.2, MS SQL server 2000 and jTDS 0.8 I have a object tree somewhat like this: A Holds a set of Bs / | \ B1 B2 B3 wich each holds a ...

29. problem with replicate() and many-to-many associations    forum.hibernate.org

Page 1 of 1 [ 1 post ] Previous topic | Next topic Author Message js Post subject: problem with replicate() and many-to-many associations Posted: Thu Jul 01, 2004 6:44 pm Newbie Joined: Wed Jun 30, 2004 12:47 pm Posts: 7 I have Mitarbeiter (employee) objects connected to Projekt (project) objects ...

30. many to one unidirectonal association problem    forum.hibernate.org

Beginner Joined: Wed Aug 04, 2004 9:01 pm Posts: 21 I have been doing posts without much response from anyone. I may have ignored a minor setting that may be taking hours and hours of my time away. Please help me out, otherwise I will be in doldrums. Below is a detailed description of my problem. The problem I am facing ...

31. Problem saving cascade associations    forum.hibernate.org

Author Message mpisano Post subject: Problem saving cascade associations Posted: Thu Aug 26, 2004 10:38 am Newbie Joined: Thu Aug 26, 2004 9:25 am Posts: 8 Hi all, I'm getting a foreign key constraint error at DB Level when I try to save an Agente (see below). As you see an Agente has a many-to-one association to DatosPersonales implemented ...

32. Problems with and association classes    forum.hibernate.org

Hi, I'm trying to implement multiple inheritance with . I understand how to use it. But my problem is that there's an association class called HabilitacaoBean that refers to a "any" object, and it's FK should be primary making a composed primary key with another one. But hibernate throws this exception and I don't know where update="false" and insert="false" should go.... ...

33. many-to-many association table persistence problem    forum.hibernate.org

Newbie Joined: Tue Aug 03, 2004 1:43 pm Posts: 7 Location: Chapel Hill, NC Anyone know why the many-to-many mappings below won't persist data into the association table (a2b)? All of the data gets persisted except the associtations, which is unfortunate since that's what I am most interested in. Nothing unusual in the logs and show_sql shows a query to 'a2b' ...

34. Ternary association logic problem    forum.hibernate.org

Hello, I have this relation that gives me headaches, I don't know how to map it to hibernate. I have three first-rank classes; User, Element and Parameter. An user has multiple elements and the user has multiple parameters per element. The relation looks like this: UserPerElementPerParameter(userid,elementid,parameterid). I tried a composite-element with an Element instance and one Parameter instance but then I ...

35. problem with many-to-many association example    forum.hibernate.org

Page 1 of 1 [ 1 post ] Previous topic | Next topic Author Message juan110470 Post subject: problem with many-to-many association example Posted: Tue Dec 14, 2004 3:04 pm Beginner Joined: Mon Dec 08, 2003 12:15 am Posts: 47 Hibernate version: 2.16 I am trying to follow the example in ...

36. Problem with cascades for many-to-many association    forum.hibernate.org

I have two tables (book and category) with a third table serving as a many-to-many assignment. What I'm trying to do is very simple, I want to add one or more categories to a book and then persist it. I can read everything great using the many-to-many mapping below, but when I add to the either the book's set of categories, ...

37. Simple one-to-one association - Very weird problem    forum.hibernate.org

Extremely wierd problem I am facing. My test setup is very simple: one-to-one association between user and address. Both tables use the uid column as the PK. [b]Mapping documents:[/b]

38. Invalid foreign key association problem    forum.hibernate.org

Hi, I have encounter a very simple problem on one-to-many mapping that associates two tables. But with a foreign key value in one table doesn't exists in the primary key value in another table. I did search through the forum and I know for a good relational model, values of a foreign key should either exists in the primary table or ...

40. Problem in One to Many Association    forum.hibernate.org

Actually i Have two classes Called ExamineeTest and ExamineeTestQuestion. ExamineeTest can Contain many ExamineeTestQuestion. I have specify following thing in ExamineeTest.hbm.xml : where examineeid is a field for examineetestquestion. and it is also a field of ExamineeTest and not a primary key. in ExamineeTestQuestion.hbm.xml is have specify :

41. problem with many-to-one association    forum.hibernate.org

Hibernate version:2 I am creating a small application to learn O/R Mapping, but I failed. Hope somebody here can give me a hand. here is the situation: there is a table named CATEGORY and its schema is CATEGORY (ID INT, NAME char(20), PARENT_ID INT). I created a POJO class named Category, which has four attributes Code: private int ...

42. Problem with multiple PK columns association set    forum.hibernate.org

Hey, im having a big problem with hibernate trying to map some multiple PK columns table as a set within another table. Let me show an example to make it easier to understand: TABLE NFS NUM_NFS ------- is a PK column SERIE_NFS ----- also a PK column ...(other columns that dont matter for the example) TABLE NFS_IT NUM_NFS ------- is a ...

43. Problem with name of an association (primer)    forum.hibernate.org

Newbie Joined: Tue Jun 28, 2005 10:20 am Posts: 15 Hello, i have figured out, that you can not use the name 'primer' for a many-to-one association in case you want to make a query. The mapping from below leads on my system (java 1.4.2 and Eclipse 3.1 with exadelstudiopro3.0.2preview) to the attached exeption. I needed one day to figure out ...

44. General persistence association problem.    forum.hibernate.org

I've recently started using hibernate for a University project and am trying to convert an application written using EJB CMP to hibernate. I realise that hibenate doesn't manage class associations like CMP, so "scaffolding code" has to be written to change both sides of the relationship. Is there an elegant way of making the relationship udpatable from both sides with the ...

45. Criteria problem : collection was not an association    forum.hibernate.org

Hi everybody ! I'm currently having a problem with the construction of a criteria. I have an Object called X which have a list of Y element. Y is a composite-element with reference to Z element. I have to construct a query which search any X objects which have at least 1 Z element in common with the list of Z ...

46. Assigning ID programatically and associations problem    forum.hibernate.org

Author Message jmikhail Post subject: Assigning ID programatically and associations problem Posted: Mon Oct 17, 2005 6:27 pm Newbie Joined: Tue Jun 07, 2005 1:08 pm Posts: 10 I'm running into a problem that I hope someone has some insight into. Our application is currently setting the id programatically in our base domain object's constructor. The mapping for the ...

47. Associations, Collections problem. How to do this..    forum.hibernate.org

Using: Eclipse version: 3.1 Hibernate version: 3.1 Hibernate Synchronizer version: 3.1.1 I have mappings like this: Assinantes: Code:

48. Problem with evict and cascading associations    forum.hibernate.org

Hibernate version: 3 / JBoss 4.0.3 SP 1 Hello, I've got a problem with evict together with cascading associations. For example given the following model: Class Person has association "memberOf" to class department. Class Person has another association "proxies" to class Person. Association "memberOf" is CascadeType=ALL. Person p1 is memberOf Department d1. Person p2 is memberOf the same Department. p2 is ...

49. Problem with deleting in a many-to-one association    forum.hibernate.org

I'm having big problems with this so I was hoping somebody could help. I have been looking in the archives the past two days and even though I've found similar problems, I couldn't find the same one as this and definitely haven't found any answers. :( My aim was to have a PROJECT table and a PERSON table with a foreign ...

50. Problem deleting with one-to-many associations.    forum.hibernate.org

I am getting a data integrity violation exception when trying to delete the top-most object in an object graph. I haven't been able to find any examples that parallel my design, so I'll try to explain it here. Hibernate version: 3.0.5 Consider four classes: E, ES, ER, and EI. E, ES, and ER all have collections of EI objects. So, while ...

51. Problem creating many-to-many association    forum.hibernate.org

I am tring to do a many-to-many mapping exactly like the Category/Item mapping described in Chapter 6 of the Manning book (page 226). In my situation, a Category has a Set of Item objects and the Item class has a Set of Category objects. What makes my situation different, and where I cannot find an answer in any of the forums ...

52. Problem in implementing one-to-many association    forum.hibernate.org

I want to try a one-many association. I have created 2 tables. Table1 and TableMany Table1 has pk1 as PK TableMany has pk1 as FK referring to pk1 of Table1 TableMany has PKOFTABLE2 as PK public class Table1 { private int intPK=0; private String column1=null; private String column2=null; private Set tableMany = new HashSet(); //get / setter for above } public ...

54. problem in an association many-to-on/one-to-many    forum.hibernate.org

Hi everybody! I have a problem when I try to associate two tables in of a database. These are my two files of mapping: ...

55. problem with hql in one to many association    forum.hibernate.org

Imagine you have 2 entities that their relation is one-to-many. like cat and kitten(a cat has many kittens). now I want to load cats properties. If I use "select o.name form cat as o" I will receive an object[] of names. If I want to load kittens of cats I cant use "select o.kittens from cat as o" (imagine cat has ...

56. Help, Insert in association table problem    forum.hibernate.org

Hibernate version: 3.0 Name and version of the database you are using: MySQL 5.0 I can't seem to add an entry onto my association table. Here's the setup: "Supplier" can have many "Book" "Book" can have many "Supplier" I have a join table called BookSupplier that takes both the PK's of Book and Supplier; and sets it as its own PK ...

57. problem in updating foreign key association table    forum.hibernate.org

Author Message vivek.devgun Post subject: problem in updating foreign key association table Posted: Thu Aug 10, 2006 1:55 am Newbie Joined: Thu Aug 10, 2006 1:14 am Posts: 1 Location: pune Hibernate version:3.1 My problem is i want to update the association table when ever a new intrument is associated to the portfolio but hibernate is first deleting the ...

58. problem with may to many association    forum.hibernate.org

I have two entity POJOs Student and Course and they are associated with many to many associatoin. The association was created using the code snippet shown below: @ManyToMany(targetEntity=Course.class,cascade=CascadeType.ALL) @JoinTable(name="student_course_map", joinColumns=@JoinColumn(name="student_id"), inverseJoinColumns=@JoinColumn(name="course_id") ) public Collection getCourses() { return _courses; } @ManyToMany(targetEntity=Student.class,cascade=CascadeType.ALL) @JoinTable(name="student_course_map", joinColumns=@JoinColumn(name="course_id"), inverseJoinColumns=@JoinColumn(name="student_id") ) public Collection get_student() { return _student; } The problem is when i delete any student, deletion is ...

59. Problem with associations to one class in different roles    forum.hibernate.org

Hello, I would like to associate one class in a one to one or one to many association in differnt roles. Addionally these associations should be navigatable in both directions!! Here a concrete example: class Person{ Address homeAddress Address workAddress } class Address{ Person person ... } Person can reference a home and a work address. Form the Address class I ...

60. basic association problem    forum.hibernate.org

I may be new to Hibernate but I've read post after post and document after document but for some reason my simple task does not work. Am I experiencing some odd dependency problem??? All I want to do is create a many-to-many relationship. Advise would be greatly appreciated. Changed names from basic event to person example with: ...

61. Problem with Many to many association    forum.hibernate.org

I have two pojos Files and User with many to many association. The code snippet of the pojos are: Code: @Entity @Table(name="FILE") public class Files implements Serializable{ private List users = new ArrayList(); @ManyToMany(targetEntity = User.class, cascade = { CascadeType.PERSIST,CascadeType.MERGE }) @JoinTable(name = "FILE_USER", joinColumns = { @JoinColumn(name = "FILE_ID") }, inverseJoinColumns = { @JoinColumn(name = "USER_ID") }) ...

62. problem to insert record with one-to-many association    forum.hibernate.org

Newbie Joined: Sun Feb 18, 2007 4:06 am Posts: 2 Hi! i work with:nebeans 5.5 , hibernate 3.0 and mysql i have two tables with one-to-many association : Message , Attach POJO classes : ///////////////////////Message.java package BEANs ; import java.util.HashSet; /** * * * @hibernate.class * table="MESSAGE" * */ public class Message { // ...

63. one-to-many association/ Delete problem    forum.hibernate.org

Hi All, I have a object "Application" that has a collection of configuration entries (configEntry). I only access the configuration entries through the Application object so I don't need a bidirectional association. ...

64. Problem with many-to-many associations and lazy    forum.hibernate.org

65. Problem with saving entites with non optional associations    forum.hibernate.org

Set up your mapping files correctly then. Hibernate can insert both of those classes into their tables and use any auto-generated values from the database in any foreign key fields with only one call to save. If your database has must exist on both ends then you should probably fix that first.

67. Problem w/ hibernate association.    forum.hibernate.org

Good day, I'm developing a web service application using java and sun appserver that connects to oracle database. I have 2 tables in my db, member_info and member_fingerprint table. I'm experiencing some problems using the association of hibernate w/ my setup tables. When i try to save a member_info, the execution goes perfectly but when i try to save a member_fingerprint ...

68. Problem with one-to-one (foreign-key association)    forum.hibernate.org

Newbie Joined: Mon Oct 08, 2007 3:29 am Posts: 1 Hi, I have a problem with a one-to-one relationship: I have two tables: "document" and "reference" There is a one-to-one relation between both. Each document has only one reference. A reference only references one document. In my application, I have a class called "catalog" which contains a list of references. I ...

69. one-to-many foreign key based association problem    forum.hibernate.org

Dear all, I have a one-to-many foreign key associated tables auto populate problem. (I want all the associated tables to get the Parent table's PK. My 1 Parent has 3 children). Code: ...

70. Hibernate Association Problem    forum.hibernate.org

Hi guys, I'm creating a web service application that uses hibernate. I created 2 java class namely Tbl_Member and Tbl_Dependents. Both of the classes comes with their own respective mapping file (hbm.xml). Now my problem is when i try to build my project (using netbeans 5.5), my compiler throws an error. Here's the error message when i tried to build my ...

71. Problem with Many-to-Many association    forum.hibernate.org

Hi, I have tried to structure the post so as to make everything as clear as possible ... can someone figure out where am i wrong with this ? Hibernate version: Using 3.x Mapping documents: Product_Parts Mapping file : ------------------------------------------- Code: ...

72. Problems in many-to-many association using 2 one-to-many.    forum.hibernate.org

Hi. I'm trying to map a many to many association with a entity association. I have Etapa, EtapaTarefa and Tarefa. The relation is always saved by Etapa. When i create the first time the relationship, everything works. When i update, the code inserts a new version of Etapa, and then (when is trying to update the relation) generates an exception. I ...

73. Criteria Joining Association Problem    forum.hibernate.org

74. Problem in many-to-one association    forum.hibernate.org

gishac Post subject: Posted: Sat Feb 23, 2008 2:07 pm Newbie Joined: Fri Feb 15, 2008 5:07 am Posts: 13 I'm using hibernate3.1 with spring 2.0, the complete log is: at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:1176) at org.springframework.orm.hibernate3.LocalSessionFactoryBean.newSessionFactory(LocalSessionFactoryBean.java:805) at org.springframework.orm.hibernate3.LocalSessionFactoryBean.buildSessionFactory(LocalSessionFactoryBean.java:745) at org.springframework.orm.hibernate3.AbstractSessionFactoryBean.afterPropertiesSet(AbstractSessionFactoryBean.java:134) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1202) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1172) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:428) at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:251) at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:156) at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:248) at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:160) at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveReference(BeanDefinitionValueResolver.java:261) at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveValueIfNecessary(BeanDefinitionValueResolver.java:109) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyPropertyValues(AbstractAutowireCapableBeanFactory.java:1100) at ...

76. Join tables association with addnl rows(problem with pk gen)    forum.hibernate.org

Need help with Hibernate? Read this first: http://www.hibernate.org/ForumMailingli ... AskForHelp hibernate3 I have a association where File and status are 2 different entities and i have a join table called filestatus which contains the fileId and StatusCode.I also have a additional column called lastUpdatedTime Stamp. The fileId is auto generated on a sequence. When i recieve a file i should save ...

77. Having problem in Hibernate one-to-many association    forum.hibernate.org

Hi, I am new to hibernate and going over Hibernate One-toMany mapping. I have created all necessary entries and which saving i am able to save records both in parent and child table. My child is a Set. My main problem is that while retrieving Parent, it is not populated with child values. It is showing Child as null. Can you ...

78. Problem with many-to-many association    forum.hibernate.org

...

79. Problems with many-to-one unidirectional association    forum.hibernate.org

Newbie Joined: Sun Mar 01, 2009 6:29 am Posts: 3 I have the following problem. I cannot get id of the associated entity, its always null, but the toString method inserts correct id. when I run hibernate with debug log level it maps correct parameters to queries when fetching the associated entity. I get equal results when the bytecode optimization is ...

80. Same column used in multiple associations problem?    forum.hibernate.org

I'm creating a sports related schema and have 3 entities: Sport, Team and Player. The DB primary key for for sport is sport_id while both Team and Player have composite primary keys consisting of sport_id (a foreign key to Sport obviously) and team_id or player_id. Sport and Team are fine but I'm running into an issue with Player which has foreign ...

81. One To Many Association Cascading Problem    forum.hibernate.org

82. Critial Problem with one-to-one association.    forum.hibernate.org

In hibernate, presently one-to-one associations are fetched non-lazily... I know that this is done because, hibernate requires to fire 1 sql to find whether proxy can be created or not... and if it has to fire 1 sql, then why not to load one-to-one object itself in 1 sql instead of creating proxy of it (in 1 sql). Consider my scenario.. ...