Hi,
what is the type of generator used when we use the following hibernate annotation


While using the hbm file, we have option of specifying generator using following tag


Do we have similar kind of option while using annotations.

I check the ouput while saving Message entity, and came across following o/p

select GC820NODE3.hibernate_sequence.nextval from dual

How does hibernate associate hibernate_sequence with GeneratedValue.

Thanks in advance.

directly copied from documentation.

@Id @GeneratedValue
@Column(name = "MESSAGE_ID")
private Long id;

If i try to use above statement. The hibernate_sequence sequence is being used, but i have not specified the sequence in my GeneratedValue. It means that hibernate_sequence is being used by default for Id generation.

In case 2 threads simultaneously try to save an object, how will the sequence number generation take place and will hibernate take care of deadlock situations.

There is no problem with multi threading. hybernate takes care of it.