1. how to use a bidirectional many-to-many association forum.hibernate.orgHello, I am using hibernate 3.0. I have mapped a bidirectional many to many association beetwen two tables using an association table. My query are working fine, so my mapping seems ok. However, I just dont know how to create an association by code. I have classes A and B. A has a property called bSet and b has a property ... |
2. how to use a bidirectional many-to-many association forum.hibernate.orgHello, I am using hibernate 3.0. I have mapped a bidirectional many to many association beetwen two tables using an association table. My query are working fine, so my mapping seems ok. However, I just dont know how to create an association by code. I have classes A and B. A has a property called bSet and b has a property ... |
3. bidirectional many - to many relationships forum.hibernate.org |
4. Parent-Child, casecade, and efficient bidirectional assoc forum.hibernate.orgNo, it's not possible, unless you do it directly via JDBC. To add something to a proxied entity (the parent), the entity has to be deproxied. However, the rule that you must update both sides of a bidirectional association applies only when you intend to use the in-memory objects afterwards: if you don't, then you only have to update the side ... |
5. joined-subclass doesn't allow bidirectional association map forum.hibernate.orgHi, I have mapped several classes as joned-subclass. I need use bidirectional association mapping with joined tables, but element |
6. joined-subclass doesn't allow bidirectional association map forum.hibernate.org |
7. bidirectional association using joined table forum.hibernate.orgHi, it is possible to map bidirectional association usin joined table when the source class is mapped as a joined subclass? The schema dtd3.0 doesn't support element |
10. many-to-many Bidirectional entity issue forum.hibernate.orgI am trying to create 2 entities(User and Role) which has many-to-many bidirectional relationship among them. So 1 User can have multiple roles and 1 role can be associated with multiple users. When I use |
11. Trouble with bidirectional one to one and setEntity forum.hibernate.orgHi folks, I face a strange result when using setEntity in my queries when using bidirectional one to one association. I have reduced my probleme to the follow testcase : A [1]< -----------> [0..1] B Mapping file : Code: |
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13. Bidirectional with indexed collections: unnecessary updates? forum.hibernate.orgHi all, I would like to know if there a definitive answer regarding the issue of (potentially) unnecessary updates following inserts, when using bi-directional associations with indexed collections. Of course when I say "unnecessary" it is from my own point of view, there might be a good reason for this behavior but I do not see it. I have read the ... |
14. Eager Fetching with bidirectional association forum.hibernate.orgHibernate version: 3.1 Hi, I am encountering a problem with bidrectional eager fetching (whether many-to-many or many-to-one) and do not know how to fix it. I have 2 classes that are linked by a bidirectional many-to-many association: Product and Provider. When I try to fetch (by load method) my Product object, I seem to get a cartesian join even though I ... |
15. one-to-one bidirectional case forum.hibernate.orgHello, Im quiet new to hibernate but read everything i found on this topic without success. I actually found different possibilities but would like to know which would be correct in my case. I have a table A and a table B. Bot have the fields shipref and traffictype. It's a composite id. Now i have my Detail.hbm.xml which is mapping ... |
16. Bidirectional Relation only working one way forum.hibernate.orgHi there, I'm fairly new to hibernate but have so far managed quite well with mapping objects and pulling stuff from my mysql database. I'm having trouble with a particular relationship in my model, I have a class called group and another called category, what I'm trying to achieve is one-to-many relationship so that one group can have many categories, the ... |
17. Transient problem: Bidirectional cascade all-delete-orphan forum.hibernate.orgI'm getting a TransientObjectException when I'm trying to persist a graph of objects for the first time. This started after I added the cascade="all-delete-orphan". Perhaps this is due to the cycle of object references? ObjectRoot has a list of the As and the Bs. As refers to a B. B has a set of As. Any help would be appreciated. Hibernate ... |
18. Problem with foreign keys and bidirectional associations forum.hibernate.orgpublic class A { int id; B b; private void setId(int id) { this.id = id; } public int getId() { return id; } public void setB(B b) ... |
19. bidirectional many to many with one class forum.hibernate.orgHi, I've got a schema like... people (personid NUMBER, name VARCHAR); friends (personidA NUMBER, personidB NUMBER, yearsKnown NUMBER foreign key (personidA) references people(personid), foreign key (personidB) references people(personid)) so if a person has a friend that they've known for a number of years, it is necessary that the person is also a friend of the friend (get it?) if A friend ... |
20. Correct way to code a one-to-one bidirectional relationship forum.hibernate.orgWhat's the correct way to code a one-to-one bidirectional relationship in a POJO? Something like this perhaps, but you end up with mutual recursion: User.java public void setAddress(Address address) { this.address = address; address.setUser(this); } Address.java public void setUser(User user) { this.user = user; user.setAddress(this); } I suppose you could access the member variables directly, but that breaks encapsulation. Or should ... |
21. build bidirectional @OneToOne for sharing primary key cases forum.hibernate.orgHello Dear all if Using hibernate mapping file I know how to build bi directional one-to-one for sharing primary key cases. but how to build bi directional one to one with annotations for sharing primary key cases? Below is example from book (hibernate annotation docs) I didnot find bi directional example ,only one way. could any one give me some hints? ... |
22. unique key one propery and foreign key with bidirectional?? forum.hibernate.orgHellu, I have a class A and B. A contains a set of B's. The foreign keys of A are stored in B. I don't have a link from B to A. But still I like to put a unique constraint over a propery in B and the foreign key in B to A. How is this possible? I noticed that ... |
23. Cannot delete a parent object with bidirectional child refs! forum.hibernate.orgHi, I've been trying to get the parent/child example from chapter 21 of the reference documentation working without success. It seems very straight forward so I'm probably missing something obvious but I've spent the last few hours reading the forum and searching online without finding the answer. The mapping for the parent object is: |
24. non-bidirectional One-to-many and generator forum.hibernate.org |
25. ManyToMany Bidirectional Association Deletion Headaches forum.hibernate.orgI have four classes [User, Group, Role and Application] that have many to many relationships between them. I have followed the reference manual and made one side of each relationship the owner (with @JoinTable) and one side the non-owning side (with @ManyToMany(mappedBy="xxx"). There are then three relationships between these classes which I explain like this: User(owner), Group [USER_GROUP association table] Group(owner), ... |
26. bidirectional ManyToMany? forum.hibernate.orgHi, I set up two classes like in the documentation example in section 2.2.5.3.3.1. However, when I have a handle to a child object, the parent relation Set is empty. I do not explicitly set this relation, but expect it to be populated for me. There is a join table and I use this on the parent side (ReportModel): @ManyToMany( targetEntity=mil.darpa.tn.model.EventModel.class, ... |
27. Can I force update and insert on a bidirectional one-to-one? forum.hibernate.orgA have a bidirectional one-to-one mapping with a foreign key. |
28. bidirectional cached association problem forum.hibernate.orgHello! There is a weird behaviour in manipulating bidirectional association having inverse accociation end marked as cached (one-to-many, many-to-many, does not matter). For example, two classes Code: class A { List bs; } class B { List as; } one end of this association have to be mapped inverse, since both can update link table, let A.bs ... |
29. ManyToMany, bidirectional (not work as bidirectional). forum.hibernate.orgHi! Hibernate version: Hibernate Core 3.2.3 GA, Hibernate Annotations 3.3.0 GA; Spring 2.04; MySQL 5.037, InnoDB; jdk 1.5.0.11 Can't solve a problem myself, can't find answer in old topics. Bidirectional mapping does not work as one can expect. Code: @Entity public class User extends BaseModel { private static final long serialVersionUID = 1L; ... private ... |
30. OutOfMemoryException with bidirectional many-to-many forum.hibernate.orgHibernate v2.3.0. MySQL v5.0.18. WinXP SP2. Building bidirectional many-to-many, two tables plus mapping table. After approximately 100 objects, each additional object added in a given transaction results in reducing approximately 1% of the 60MB heap. Heap goes to zero, OutOfMemoryException occurs. These are not large objects, neither table. Have taken jmap and crash heap dumps. Analyzed with jhat. Nothing extraordinary. jhat ... |
31. One-to-many relationship: Unidirectional vs Bidirectional forum.hibernate.orgI also have the same question: Why should I use unidirectional @OneToMany relationships when the corresponding bi-directional relationships seem to perform better? In fact, that is what chapter 23 (Example: Parent/Child) of Hibernate manual says; that is, bidirectional uses less SQL statements during updates. In addition, with a bi-directional we can benefit from the Cascade operations. On the other hand, if ... |
32. bidirectional one-to-one with polymorphism forum.hibernate.orgI'm hoping somebody can point me at the documentation or an example that covers a situation such as this: class A { D dReference; } class B implements D{ A aReference; } class C implements D{ A aReference; } interface D { } The physical mapping will result in 3 tables, one each for classes A, B and C. And when ... |
33. bidirectional one-to-one with join fetching forum.hibernate.orgI am almost giving up and decided to hit the forums hoping to find an answer or at least a direction... It seems not possible to get a 1-1 bidirectional relationship between two tables (left and right) using a join fetch strategy. First of all, no I cant use lazy loading because I need to load an inmemory, disconnected cache from ... |
34. bidirectional any forum.hibernate.orgWill hibernate ever support bidirectional any associations? I mean where the reference is made by a pair of kind-id instead of a normal fk, so that the target could be of different kind~class~entity~table (of course, fk constraints should not be generated here). I've tried a number of workarounds but they are far from ideal (custom queries, @where clauses, unidirectional any associations). ... |
35. bidirectional one-to-many association on a join table forum.hibernate.orgpublic List getSupplementalTables() { List supplementalTables = new ArrayList(); for (Iterator it = getTables().iterator(); it.hasNext();) { AbstractTable table = (AbstractTable) it.next(); ... |
36. JOINing bidirectional generate too many SELECT statement. forum.hibernate.orgMy Problem/Questions are below... Mapping documents (Parent): |