Java executeBatch()

Hi,

I am using executeBatch to pass multiple commands to MySql at once instead of passing then one by one. I am using the int [] that is returned by the method. Going through the array I get either a 1 or -1 as a result and was wondering what the -1 meant? I am using the executeBatch to call a procedure many times that inserts a new row unless it is a duplicate row which then performs an update.

I know that 0 or greater is successful execution.
-2 is Statement.SUCCESS_NO_INFO.
-3 is Statement.EXECUTE_FAILED.
But I am not sure what -1 means.

Thanks,

Carl