[hibernate-dev] HHH-12125 - @GeneratedValue & 5.3

The background is all in the Jira, but the crux is this... it is better to allow a user to do this: @GeneratedValue( strategy=SEQUENCE, generator="my_seq") rather than: @GeneratedValue( strategy=SEQUENCE, generator="my_seq") @SequenceGenerator( name="my_seq", sequenceName="my_seq" ) You can see that `SequenceGenerator` is completely unnecessary in this case because it adds no new information beyond what is already available on the `@GeneratedValue`. This works great for `GeneratedValue#strategy=SEQUENCE` and `GeneratedValue#strategy=TABLE`, however consider this mapping: @GeneratedValue( strategy=AUTO, generator="increment" ) @GenericGenerator( name = "increment", strategy = "increment" ) Here we have the same underlying concern - the `@GenericGenerator` is just noise, it adds no additional information. In keeping with the work done as part of HHH-12125 it would be great to allow users to instead just say: @GeneratedValue( strategy=AUTO, generator="increment" ) The problem here is that this last one is actually the responsibility of `org.hibernate.boot.model.IdGeneratorStrategyInterpreter#determineGeneratorName` to interpret, but it is not passed the `GeneratedValue#generator` value. So the easiest solution would be to add an additional parameter to `IdGeneratorStrategyInterpreter#determineGeneratorName` for passing in the generator name. The concern here is that `IdGeneratorStrategyInterpreter` is defined in the API space and could very well have custom impls. A lesser solution wold be to add checks to the code that calls `IdGeneratorStrategyInterpreter#determineGeneratorName` to check for "magic" generator names before asking the `IdGeneratorStrategyInterpreter`. This is just a very inflexible and non-extensible solution, but maybe this works for 5.3 and we can adjust `IdGeneratorStrategyInterpreter` as part of 6.0. Thoughts?