I was able to update to Spring 2.7.8 which mvn dependency:tree shows as
using hibernate 5.6.14.Final. I get the same results with that. If I
override the dependency to 5.6.15.Final I still get the same results.
The SQL datatype for the UUID field is CHAR(9) which was defined 20+ years
ago so I'm mimicking that in the Unit tests in the schema.sql file.
The join in the child table object is defined by:
@ManyToOne
@JoinColumn(name = "uuid")
private Person person;
And in the parent object by:
@OneToMany(fetch = FetchType.LAZY, mappedBy = "person", cascade =
{CascadeType.ALL}, orphanRemoval = true)
private Set surnames;
With the uuid value defined as:
@Id
@Column(name = "UUID")
@GeneratedValue(strategy = GenerationType.SEQUENCE, generator =
"personseq_generator")
private Integer uuid;
As I mentioned. it all worked before, it seems to work in Oracle outside of
unit tests, and using Derby for the unit tests so I'm perplexed as to why
it's not successful with H2.
Thanks,
Kris
On Friday, February 10, 2023 at 12:34:56 AM UTC-7 Evgenij Ryazanov wrote:
> Hello!
>
> 2.5.5 is too old and it has hibernate-core 5.4.32.Final in its
> dependencies, this version doesn't support any new versions of H2. You need
> to check version of Hibernate ORM actually used by your application and
> upgrade it to 5.6.15.Final or 6.1.7.Final if necessary.
>
> You also need to check SQL data types of columns with UUID values if you
> have them, because Hibernate ORM can incorrectly choose some wrong data
> type such as BINARY(255) for them, in historic versions of H2 it was
> acceptable, because it was incorrectly implemented as BINARY VARYING(255),
> but in new versions of H2 these data types have different
> standard-compliant implementations. The best data type for H2 is UUID, but
> BINARY(16) can also be used. Attempts to use BINARY(255) cause various
> problems, such as https://hibernate.atlassian.net/browse/HHH-15373
>
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