Hi,

If I try the example of the page 167, I obtain the exception "reassociated object has dirty collection", because the collection of bids is dirty.

To solve this problem, is correct add "session.update(item);" before "session.lock(item, LockMode.READ);".

Thanks.

Yes, thats an error in the book. I'll add it to the errata.

I'm sorry but the errata reads:

167, code block, the explanation in the third paragraph ("saving the associated Bid by cascade") is wrong and needs a complete rewrite. Use saveOrUpdate() instead of lock().

This is a little unclear. Could you provide a more precise explanation of what the incorrect text and replacement text should be?

Also, it also isn't clear when the last update to the errata list was made. I know you made one fairly recently (for p. 37) but the update date is from December and didn't change.

Thanks much!

Dan

Please continue this discussion in the user forum, the usage of lock() is simply wrong and you should ignore the advise given in this paragraph. Correct would be to use saveOrUpdate().

I don't see an easy way how I can add timestamps to my errata updates. I think sorting them by page is the best we can do.

In other words, just ignore the whole paragraph and don't try to figure out what it means and why it doesn't really work like this.

Couldn't you manually write one in when you make the update? Like at the top or bottom, "The info was last updated at #####".

Just a thought.

Dan

I'm not trying to sound dense, but which paragraph? The one that begins "By default..." and ends "...has cascading enabled)."? And if so are you saying no part of that section of text is correct?

Thanks,

Dan

Ignore this: "before saving the new Bid by cascade (assuming that the association from Item to Bid has cascading enabled)."