Guillaume VON TOKARSKI ( https://hibernate.atlassian.net/secure/ViewProfile.jspa?accountId=5a9c818... ) *updated* an issue
Hibernate ORM ( https://hibernate.atlassian.net/browse/HHH?atlOrigin=eyJpIjoiNWM3ZmM0NWQ2... ) / Bug ( https://hibernate.atlassian.net/browse/HHH-16241?atlOrigin=eyJpIjoiNWM3Zm... ) HHH-16241 ( https://hibernate.atlassian.net/browse/HHH-16241?atlOrigin=eyJpIjoiNWM3Zm... ) Unable to read/write/query attribute on type with AttributeConverter ( https://hibernate.atlassian.net/browse/HHH-16241?atlOrigin=eyJpIjoiNWM3Zm... )
Change By: Guillaume VON TOKARSKI ( https://hibernate.atlassian.net/secure/ViewProfile.jspa?accountId=5a9c818... )
The model has {{java.time.YearMonth}} attributes being mapped to integers on the DB (MariaDB)
Here is how it was used:
{code:java}@Convert(converter = YearMonthConverter.class)
@Column(name = "month", nullable = false)
private YearMonth month;{code}
And here is the converter class (based on Jakarta now):
{code:java}public class YearMonthConverter implements AttributeConverter<YearMonth, Integer> {
@Override
public Integer convertToDatabaseColumn(YearMonth attribute) {
return attribute == null ? null : (attribute.getYear() * 100) + attribute.getMonth().getValue();
}
@Override
public YearMonth convertToEntityAttribute(Integer dbData) {
return dbData == null ? null : YearMonth.of(dbData / 100, dbData % 100);
}
}{code}
I’ve got Adding a MAX demo project to the ticket with 2 errors:
* Persisting the entity gives {{PersistenceException}}:
** message: {{ ( conn=9 ) query on this column which fails You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near 'year_month, id) values (202212, 1)' at line 1}}
* Searching the entity with {{=}} gives a {{PersistenceException}}:
** query: {{SELECT de FROM DemoEntity de WHERE de.yearMonth = :yearMonth}}
** message: {{Converting org.hibernate.exception.SQLGrammarException to JPA PersistenceException : JDBC exception executing SQL [select d1_0.id,d1_0.year_month from demo_table d1_0 where d1_0.year_month=?]}}
* Searching the following error entity with {{MAX}} gives an {{IllegalArgumentException}} :
** query: {{ SELECT MAX(de.yearMonth) FROM DemoEntity de}}
** message: {{ org.hibernate.QueryException: Parameter 1 of function max() has type COMPARABLE, but argument is of type java.time.YearMonth}}
It’s worth noticing that the ORM is able to read/write this column from the DB, it only fails to run functions like MIN or MAX.
The debugging took me to a section of the code in {{ArgumentTypesValidator}} where the code considers that the node type {{YearMonth}} is incompatible with the {{FunctionParameterType}} {{COMPARABLE}}.
Let me know if there is anything else that I can provide.
( https://hibernate.atlassian.net/browse/HHH-16241#add-comment?atlOrigin=ey... ) Add Comment ( https://hibernate.atlassian.net/browse/HHH-16241#add-comment?atlOrigin=ey... )
Get Jira notifications on your phone! Download the Jira Cloud app for Android ( https://play.google.com/store/apps/details?id=com.atlassian.android.jira.... ) or iOS ( https://itunes.apple.com/app/apple-store/id1006972087?pt=696495&ct=EmailN... ) This message was sent by Atlassian Jira (v1001.0.0-SNAPSHOT#100217- sha1:65be9f2 )