Hibernate version:3

Hello,

I am trying to make a copy of an object and resave it as a new object.

I have tried everthing I can find but still get odd behavior(IE sometimes one will save properly, sometimes the changes will be in the old one saved etc.)

Basically I have an object with and ID, various fields, then an linkid.
I want to make a copy as it stands, remove the id and add it to the linkid and save, make changes to the original one and then save so I will have an exact copy of the object before the changes.

Thanks in advance,
--James

May be you can tell how u tried for this and what result u got.

Hello,

I have found one that seems to work, just wondering if there is anything wrong with copying them this way:

ObjectInputStream ois;
ObjectOutputStream oos;
ByteArrayInputStream bais;
ByteArrayOutputStream baos;
byte[] data;
Object copy;
// write object to bytes
baos = new ByteArrayOutputStream();
oos = new ObjectOutputStream(baos);
oos.writeObject(object);
oos.close();
// get the bytes
data = baos.toByteArray();
// construct an object from the bytes
bais = new ByteArrayInputStream(data);
ois = new ObjectInputStream(bais);
copy = (Object) ois.readObject();
ois.close();
return copy;

--James

You can accomplish this with cloning also.

Make your object cloneable
clone the original one
unset the id of the clone
Make changes to original
save both

You have to implement cloneable and I reverse eng my pojos from the database while developing and I havent figured out how to change the base design of the reverse eng of hibernate to include things like 'implements cloneable' etc.

--James

In that case your other solution should be fine.