unique « ID « JPA Q&A

1. Unique Id in JPA (multi tenant) stackoverflow.com

I'm currently working on a multi tenant applcation which is using JPA (Hibernate). For some tables I need a sequential number thats unique for each tenant. Because of this I cannot ...

2. Using Hibernate to generate unique Id forum.hibernate.org

Hi all, I am facing a problem related to Ids management. My problem is: A has many B I have a business key (B.key) in B which is a string equals to A.id + B.nb where nb starts from 1 and increment one by one. It means first B of A, second B of A... I have problems creating B.id as ...

3. unique multiple keys (not comoposite id) forum.hibernate.org

I have a class with it's own unique ID that refers to 2 other classes through many-to-one mappings. Is there a way to indicate to hibernate that the values of the 2 mappings when combined should be unique? As an example, consider the following 3 tables create table A ( a_key INT PRIMARY KEY ..... ); create table B ( B_key ...

4. not able to generate unique id's using hybernate forum.hibernate.org

hi i have just started working with hibernate. i am not able to generate unique id's for the generator class. i am using pointbase server. i have tried generating the id's using all the classes mentioned in the net.sf.hibernate.id but was unsuccessful. could anyone help me in this issue?? i tried to map a simple object called jet using this xml ...

5. Unique Id's - Are they global? forum.hibernate.org

I have an application where multiple instances (of the application) are creating data that eventually need to be merged together. I was wondering if the uuid.hex generated id can be considered globally unique? The application runs in disconnected machines so the machine's IP address will not be unique for each machine in it disconnected state. Unless, uuid.hex also works with host ...

6. Updating/Creating -- Objects vs. their unique ids forum.hibernate.org

Hi, Say, for example, I have a State object. This State object has the following properties: id - the unique id shortName - the short name such as "WY" longName - the long name such as "Wyoming". Now say I have a Person object, which using a many to many association has a method getStatesVisited() that returns a Collection of State ...

7. get unique id from MultipleHiLoPerTableGenerator forum.hibernate.org

Hibernate version:3.0.5 Mapping documents: hilosequences sequencename highvalues

8. problem with SPID as unique id fortwo paralell sessions forum.hibernate.org

2.1.8 Hi, I'am a newbie on using Hibernate and really need some help. I have struggled with a problem for 2 days without finding any solution. The problem is that may application sometimes set up two session to a "sybase" database and create a ConnectionLock where the "spid" is unique primary key. The problem is that the second session get the ...