[hibernate-dev] JPA's allocationSize & SequenceHiLoGenerator

Hi, I would like to get some feedback on the SequenceHiLoGenerator impl. being used when specifying a value larger than 1 to the allocationSize parameter of the @SequenceGenerator annotation. I am indeed wondering why it isn't simply incrementing the sequence.nextval by one until it has consumed all values until sequence.nextval + allocationSize... The reason is two folded: 1/ Why would I want to fall back to such large row ids? 2/ What if some other system is accessing the sequence to insert row in the same table and eventually leads to duplicated values? Is there actually a good reason to use the HiLo algorithm to implement that feature and not the "simple way"? Am I missing something? Thanks, Alexander Snaps