open static fun <T : Any> requiredUniqueResult(@Nullable results: MutableCollection<T>): T
Return a unique result object from the given Collection.
Throws an exception if 0 or more than 1 instance found.
results - the result Collection (can be null but is not expected to contain null elements)
IncorrectResultSizeDataAccessException - if more than one result object has been found in the given Collection
EmptyResultDataAccessException - if no result object at all has been found in the given Collection
Return
the unique result object
See Also
org.springframework.util.CollectionUtils#hasUniqueObject