Hibernate
/
hibernate-orm
mirror of https://github.com/hibernate/hibernate-orm
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

Document the new default of hibernate.timezone.default_storage in the migration guide 

Co-authored-by: Christian Beikov <christian.beikov@gmail.com>
This commit is contained in:
Yoann Rodière 2023-03-01 08:02:25 +01:00 committed by GitHub
parent c2ec272ef1
commit 8118ce2646
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 12 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

13
migration-guide.adoc
View File

@ -65,8 +65,19 @@ NOTE:: On MySQL, enums are now stored using the `ENUM` datatype by default
[[ddl-timezones]] [[ddl-timezones]]
=== Timezone and offset storage === Timezone and offset storage
`OffsetDateTime` and `ZonedDateTime` now always map to `TIMESTAMP WITH TIME ZONE` by default `hibernate.timezone.default_storage` now defaults to `DEFAULT`, meaning:
* if the database/dialect supports it, time zones of date/time values are stored by using the `timestamp with time zone` SQL column type;
* otherwise, time zones of date/time values are not stored, and date/time values are normalized to UTC.
In Hibernate ORM 5, time zones were not stored, but normalized to the time zone set in `hibernate.jdbc.time_zone`, the JVM time zone by default.
This discrepancy might lead to incorrect date/time being loaded from the database
for properties of type `OffsetDateTime` and `ZonedDateTime`
if your application was migrated from Hibernate ORM 5 and
was setting `hibernate.jdbc.time_zone` to a non-UTC timezone.
To revert to Hibernate ORM 5's behavior, set the configuration property `hibernate.timezone.default_storage` to `NORMALIZE`.
[[ddl-check]] [[ddl-check]]
=== Check constraints for boolean and enum mappings === Check constraints for boolean and enum mappings