anonymous wrote : 1) The default value with be '0'. How does the
entitymanager.merge differentiate between '0' default and a debtor.setId(0)?
I don't know. Pretty sure I've never had a row with a PK of 0. But I haven't
looked into the implementation code to see how Hibernate handles this case specifically.
As a general rule, I DO use the wrapper classes (ie. Long and Integer) for IDs so that I
have the ability to specify "null".
S,
ALR
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