map « Composite « JPA Q&A





1. Map a composite key inside a composite key hibernate xml    stackoverflow.com

This is what I would like to do, map an object to another table that has the same primary keys. The below is an example, basically I have one object ...

2. JPA composite key mapping    coderanch.com

Hi everybody! I need help with JPA (Toplink) mapping. I have 3 classes: Products, ProductsDescription and ProductsDescriptionPK. Products has 1 ID: products_id ProductsDescription has 2 IDs: products_id and language_id which is in ProductsDescriptionPK, so ProductsDescription has EmbeddedId: ProductsDescriptionPK. Since 1 product can have many descriptions in different languages, I wish to bind @OneToMany Products with ProductsDescription by using products_id, but I ...

3. Mapping a Composite Foreing Key    forum.hibernate.org

Newbie Joined: Thu Feb 25, 2010 3:48 pm Posts: 2 Hi, I have a big problem on mapping composite pks into fks and I already tried a lot of manners... My doubt is how would you map a table like this below without using an aux class to represent the composite key? I've already tried a lot of things I found ...

4. Composite key mapping w/ hibernate v3.2.6 and jdk-6    forum.hibernate.org

Hi, I have problem to map a relationship table with both regular and composite foreign keys in it. Here is the details: Assume we have three tables: social_site(id, site_url) user(first_name, last_name, birth_day, gender). The PK is composite of first_name and last_name has_friend(social_site_id, user_first_name, user_last_name, friend_first_name, friend_last_name) Here, the has_friend table defines relationship beteen users for a given social site which basically ...

5. Help on mapping composite key    forum.hibernate.org

Author Message blackdogdz Post subject: Help on mapping composite key Posted: Tue May 03, 2011 7:37 am Newbie Joined: Tue May 03, 2011 7:32 am Posts: 3 Hello, i am facing a problem that i can't resolve i looked everywhere on forums but unable to get over it. i use JSF 2.0 for the views, and hibernate for persistance. ...

6. One to one mapping between 2 composite keys    forum.hibernate.org

7. Many to many mapping with composite keys    forum.hibernate.org

8. Mapping of Composite Keys    forum.hibernate.org

Mapping of Composite Keys I have two tables with the below definition CREATE TABLE VYA6CPP ( A6VN9K VARCHAR(9), A6VN8K VARCHAR(8), A6J2CD VARCHAR(20), PRIMARY KEY(A6VN9K, A6VN8K) ) CREATE TABLE MAMAM1 ( M1VIN1 VARCHAR(9), M1VIN2 VARCHAR(8), M1SHPR VARCHAR(4), PRIMARY KEY(M1VIN1, M1VIN2), FOREIGN KEY(M1VIN1, M1VIN2) REFERENCES VYA6CPP(A6VN9K, A6VN8K) ) Below are the entity definition. Code: @Entity @Table(name="MAMAM1") public class Mamam1 implements Serializable { ...

9. using ScrollableResults with mapping which has composite id    forum.hibernate.org

Hi.. i'm trying use ScrollableResults with the following snippet of my mapping file :- whenever i perform a query, (at the same time using ScrollableResults) on my table has more than 1 record with either 1 of the primary key having ...





10. Mapping a composite (Gamma 163)    forum.hibernate.org

Hi, I want to map a composite. I have the following class hierarchy. Code: public interface IComponent { //setters and getters for the common properties } public class Leaf implements IComponent{ //setters and getters for the common properties } public class CompositeElement implements IComponent{ //setter and getter for the common properties //access and modifiers for the IComponent List } I'd like ...

11. Mapping Composite keys    forum.hibernate.org

I would like an opinion and any pointers related to the following type of mapping. I realize the database structure is not ideal for hibernate. Unfortunately it cannot be changed at this time. ... Some properties

12. Maps & Composite Keys    forum.hibernate.org

I am having trouble implementing a map in Hibernate. I have checked out the message board, but have not found a close enough match for what I am trying to do. I am working from an existing Oracle DB, so I can not use Hibernate to derive the DDL. Here is my setup: 3 Java Classes ------------------- UsersTO - private long ...

13. one-to-many mapping with composite-id    forum.hibernate.org

Code:

17. Composite id & one to one Mapping    forum.hibernate.org

18. One-to-many mapping with a composite key    forum.hibernate.org

Newbie Joined: Tue Jul 20, 2004 6:04 am Posts: 4 Hi I am using hibernate version 2.1 with DB2 ver 8.1 FP3. I have two mapping files namely test_order and test_vehicle. test_order Code: ...

19. Many-to-many mappings with composite keys    forum.hibernate.org

Issue: I have 2 many-to-one associations, both using composite keys. The composite keys both share collumn 'b', which is also part of composite primary key. The Hibernate session fails to load unless I add attributes: update="false" insert="false" to the mapping. However if I add these attributes to the mapping I can no longer save new persistent instances, because hibernate attempts to ...

20. Incorrect composite key generated for many-to-many mapping    forum.hibernate.org

Hibernate version: HIbernate 2.1.4 Mapping documents: ...

21. many-to-many mapping challenge using composite-id    forum.hibernate.org

Hi, I'm having some trouble doing a many-to-many mapping on the following table-layout. As I see it the collection table is 'missing' an attribute. The application and role table are both using composite-id's. Hibernate version: 2.1.6 Mapping documents:

22. composite-id and maps -- not compatible?    forum.hibernate.org

I have to use maps (as opposed to POJOs) to map my business objects and am running into issues with entities that have a composite primary key (i.e. the mapping uses ). The problem is that Hibernate seems to be ignoring the class specified through the class attribute and silently creating a HashMap to store the individual fields. I need to ...

23. Many-to-many composite key mapping    forum.hibernate.org

24. set mapping with composite-id    forum.hibernate.org

I'm a newbie at hibernate, so if I've done something obvious and stupid, I apologize. I don't understand what I've done wrong here. I have a a Person class which is associated with 0..* addresses. Each Address has a key composed of the associated person (a number, in the database) and a "tag" (basically a name for the address). Everything seems ...

26. Mapping Composite Key using Hibernate:Help    forum.hibernate.org

Hi, I am using hibernate 2.0. I would like to know how to Map composite Key using the Hibernate. I am having one Database Table named RevenueAttributeLink in that I am having two Columns "revenueId" and "revenueattributeId" these two are composite key. My hibernate mapping XML I have written like this.I am using this Table to read the values returned from ...

27. one-to-many mapping with a composite key    forum.hibernate.org

Newbie Joined: Wed Aug 03, 2005 1:04 pm Posts: 4 I am new to hibernate and I have looked through the documentation and the forum and can't seem to find a solution to my problem. Not that this hasn't already been answered but I don't get it. I have two tables Peis301 and Peis480h. Peis301 has a foreign key EMSSAN that ...

28. [Mapping XML] composite-id    forum.hibernate.org

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29. How to map part of composite id as one-to-many set    forum.hibernate.org

Hi, I got a problem of mapping following relationships, Say: I have following three tables : Table_A: a_id (PK), a_version (PK) a_name Table_B: a_id (FK) a_version(FK) b_name, .. Table_C c_id, (PK) c_version, (PK) c_name, a_id, (FK) other_field, ... I tried to map aid and a_version of Table_A to composite id, it worked fine with one-to-many association with Table_B. But I didn't ...

30. Hibernate mapping and composite keys    forum.hibernate.org

Hibernate version: 3 I have a question regarding hibernate mappings and composite keys. I have 3 java classes whose data members I have shown below. A service is a static table with a number of provisioned services. Each subscriber has a servicelist which is a one to many relationship. The primary key (PK) for each table is indicated for each class. ...

32. How-to configure mapping with composite key ?    forum.hibernate.org

Oracle Database 10g Enterprise Edition Release 10.1.0.3.0 Hibernate version:3.0.5 Can't create mapping for tables: CREATE TABLE USER ( "DCODE" NUMBER NOT NULL ENABLE, "ECODE" NUMBER NOT NULL ENABLE, "MCODE" VARCHAR2(10) NOT NULL ENABLE, "UNAME" VARCHAR2(100), CONSTRAINT "PK_USER" PRIMARY KEY ("DCODE", "ECODE", "MCODE") CONSTRAINT FK_USER_OFFICE FOREIGN KEY ("DCODE", "MCODE") REFERENCES OFFICE ("CODE", "MCODE") ENABLE CREATE TABLE OFFICE ( "CODE" NUMBER NOT NULL ...

33. composite map-key    forum.hibernate.org

34. how to map composite-map-key?    forum.hibernate.org

Hi, I want to map a collection to hashmap. My questions: 1) Should create a class, for example, CMapKey as following? class CMapKey implements java.io.Serializable { private String propName; private String azType; } 2) Is ...

35. Mapping composite keys in one-many    forum.hibernate.org

Hibernate 2.1.6 Hi I have the following tables and keys client --> client (primary key) client_category -> client, classification_category, classification (composite key) classification -> classification_category, classification (composite key) I am able to map client.client with client_category.client How do I map the composite key client_classification[classification_category, classification ] with classification[classification_category, classification ] in the client_category hbm file thanks

36. Composite key part as map key?    forum.hibernate.org

37. Many-to-many mapping via idbag with composite key    forum.hibernate.org

All of our tables have a composite key in place, even M2M association tables. Our application assigns unique ID's to one element of the composite key in a save/update listener interceptor method, so we never specify generator tags in the hbm mapping files. Is there a way to use an idbag for many-to-many relationships that use a composite key as a ...

38. Composite keys, one-to-many mappings and ClassCastExceptions    forum.hibernate.org

Hi, I have been having problems with a one-to-many relationship with a composite id and was unable to get it to work until I introduced an id which was a concatentation of the columns in the composite key. Ideally I'd like the composite-id to work and was hoping some could explain what is gonig on. Here are the mapping files that ...

39. Using a composite key in a Set mapping    forum.hibernate.org

I have a pair of tables that share a composite key which I'd like to link with a one-to-many set association. I'd like to do something like this: Obviously, this isn't correct, as multiple tags are not supported. Is there a syntax which would support using a composite key as the ...

40. Help with mapping with composite-key    forum.hibernate.org

Composite id are never a good idea with Hibernate. It's recommended to define a technical id. Is your schema a legacy one ? I mean : is it new or already existing and used since a long time ? If new, you should define an id in studentexam. It would be the primary key. Then define the student_id as an ref ...

41. Composite id with map.    forum.hibernate.org

Newbie Joined: Fri Jul 28, 2006 12:13 pm Posts: 1 I have a hotel object with a composite id of (ctyhocn,locale) It has a map of images that are the same regardless of locale. I'm getting an exception thrown when I attempt to retrieve a hotel. Any idea what the issue is? Hibernate version: 3.1.3 Mapping documents: Code: ...

42. One to One mapping with a Composite Key    forum.hibernate.org

I have the following scenario: I have a BAPDocument object that has a composite key that is made up of the following fields: fiscalYear and documentNumber. The BAPDocument has an Employee object that also has a composite key that is made up of the following fields: fiscalYear and documentNumber. The BAPDocument object is mapped to a table called bbab20h and the ...

43.  mappings with composite keys    forum.hibernate.org

Hi, We're developing a new application and are reluctant to use surrogate keys for row identity, opting instead for the natural keys and so are using composite keys within Hibernate. We have decided this as we want to represent the data model independantly of any accessing framework. We've started ok so far, but we have 2 problems (described below). We probably ...

44. about composite-id mapping    forum.hibernate.org

Newbie Joined: Mon Oct 30, 2006 2:31 am Posts: 8 hi all, i have a master which has an id of sequence generator and my detail has 3 primary keys, one of those is master id. my mapping are the followings: my master Code: ...

45. composite key and many to one mapping    forum.hibernate.org

I'm not sure I understand the full question, but here is a quick start: If you have 3 classes representing your tables: - PrfVendorDetails - PRF_details - Vendor_master You will need to have an extra class to manage the composite key: PrfVendorDetailsId which includes the 2 properties you mention. Then have PrfVendorDetails include a property called id of type PrfVendorDetailsId. Then ...

46. primary composite-id and mapping    forum.hibernate.org

Hello... I have a problem with composite-id.. I have 2 tables. Each one having a composite primary key. The first composed-primary key is made with two columns and the second one is formed with the 2 columns of the first primary key plus 2 others columns. | Table 1 | | Table 2 | | | <====| | |composite-id | | ...

47. How can I map two keys without composite-id ??    forum.hibernate.org

I have this too tables: CREATE TABLE PersonalData( ID_PersonalData VARCHAR2(20) NOT NULL, ID_Person VARCHAR2(20) NOT NULL, other VARCHAR2(20) CONSTRAINT PK46 PRIMARY KEY (ID_PersonalData,ID_Person) ); CREATE TABLE Person ID_Person VARCHAR2(20) NOT NULL, otherfield VARCHAR2(20) CONSTRAINT PK31 PRIMARY KEY (ID_Person) ); And i need ID_PersonaData like a generated identifier .. How can i do that ? .. I never map two ids in ...

48. how to index a composite-map-key    forum.hibernate.org

I have the following two mappings: Code: ...

49. many-to-many mapping with composite keys on both sides    forum.hibernate.org

In our database tables, we have many instances of many to many relationships with composite keys on both sides. These types of composite key relationships are not unusual and have existed in every database I have ever worked with for the last 15 years. Here is an example relationship from our DB: Alert_subscription Table - primary key (ian, alert_subscription_type_id) Alert_subscription_Email_Map Table ...

50. Mapping with a composite-id    forum.hibernate.org

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51. composite key mapping    forum.hibernate.org

Dear all, I'm new to hibernate, I have create a mapping which have a composite key. mapping as follow, what i want to ...

52. one-to-one mapping, composite index, Wrong target passed    forum.hibernate.org

Explanation I was receiving a class cast exception which told me to set the "hibernate.cglib.use_reflection_optimizer=false" for more specific info. Upon doing that, I got a much more specific exception. I debugged the code to find the root cause and came up with this: In org.hibernate.property.BasicPropertyAccessor on line 105 , "return method.invoke(target, null)". The method is an instance method named "getCompanyNumber" in ...

53. Mapping with composite-id, impossible    forum.hibernate.org

54. Mapping Set with Composite Key    forum.hibernate.org

On first look, this simply looks like a question about compound primary keys, right? Composite primary keys are no mystery in Hibernate, and there are a few ways to implement them, includinging IdClass and EmbeddedId. Personally, I just use the Embeddable annotation if I can. Hibernate3 Tutorial on Using Composite Primary Keys: Mapping Compound Id Keys So, with a compound key ...

55. Please help....Hibernate Composite id mapping.    forum.hibernate.org

I have a table in database which has following mapping it does not work: Code: ---------------------------contact-phone.hbm.xml--------------------- ...

56. Composite key mapping    forum.hibernate.org

Hibernate 3 Hi, I'm trying to do the mapping for the following relationship: CartTable - ID (PK) - HeatKitModel - ProductID HeatKitModel is foreign key to HeatKitTable.ItemNumber ProductTable - ID (PK) - HeatKitTableName HeatKitTableName is foreign key to HeatKitTable HeatKitTable - TableName - ItemNumber (TableName & ItemNumber are composite key for HKTable) In my Cart class, I want to have a ...

57. One-to-many mapping with composite key    forum.hibernate.org

58. composite keys and many-to-one mappings    forum.hibernate.org

Hi Everyone, Let me start of by saying that I am new to Hibernate and ORM concepts so I apologize for any misuse of terms and unfamiliarity of concepts below. For the sake of simplicity, I have two Classes; State and Country which are setup as follows: NOTE: fields preceded by '#' are either a unique key or part of a ...

59. hibernate mapping composite-id    forums.oracle.com

Hello I have a table which has a primary key with two elements. My hibernate-tools plugin in Eclipse generated the mapping file with a composite-id which maps to a class with those two parameters. But hibernate gives me: "org.hibernate.MappingException: component class not found: CountrylanguageId" How can I get hibernate to see this class ?