How to make hibernate insert an object and not update it

nestorjb · **Joined:** Sun Oct 26, 2003 9:02 pm **Posts:** 90

Hi

I wish to create a class based on a table with an id that everytime I save an object based on the class instead of updating the row in the table it creates a new row with a new Id.

Thanks in advance

dimas · **Posted:** Wed Nov 05, 2003 4:25 pm

I do not understand why you may need this... Why not just

obj = obj.clone();
obj.setId(null);
session.save(obj);

?

emmanuel · **Posted:** Wed Nov 05, 2003 7:15 pm

http://forum.hibernate.org/viewtopic.php?t=924779&highlight=clone

nestorjb · **Joined:** Sun Oct 26, 2003 9:02 pm **Posts:** 90

Hi

I checked out the other forum and is exactly the same problem. I know I can clone the objects but that means that I have to clone also the references. I read that there was a replicate method for this kind of problem but I can't find it in the API.

Thanks for the help

emmanuel · **Posted:** Thu Nov 06, 2003 11:05 am

nestorjb wrote:

I read that there was a replicate method for this kind of problem but I can't find it in the API.

It's on the 2.1 version.

nestorjb · **Joined:** Sun Oct 26, 2003 9:02 pm **Posts:** 90

Hi

2.1 is in beta right now. So the only workaround to this problem is to clone the objects?. Are there any other workaround.

Thanks for the help

emmanuel · **Posted:** Thu Nov 06, 2003 7:13 pm

As dimas said, does this work ?

Code:

myObj = session.load(...);
session.evict(myObj); // may not be useful
myObj.setId(null); //null assuming id is not primitive ; may not be useful because of explicit save usage
session.save(myObj);

nestorjb · **Joined:** Sun Oct 26, 2003 9:02 pm **Posts:** 90

Hi

Setting the Id column to null does not work. I get the following exception:

net.sf.hibernate.HibernateException: identifier of an instance of WhateverClass altered from 1020020 to null

Thanks