列是 uuid 类型，但保存实体时表达式是 bytea 类型

Question

I have a problem saving entity with UUID field. I create a new instance, call setMyGuid(UUID.fromString(guid)); and then call save method of my CrudRepository . But it produces SQL with column value '<byte[]>' , not UUID/String.

binding parameter [8] as [BINARY] - [d720f7e2-69ec-4646-bd99-72545123f873]

I have hibernate.dialect set to org.hibernate.dialect.PostgreSQLDialect , I've tried to set also spring.jpa.database-platform , but nothing helps. Here is written , that UUID should map to SQL uuid.

Database is Postgres, column definition is:

@Column(name = "my_guid", nullable = false, unique = true, columnDefinition = "uuid")
private UUID myGuid;

Stack trace with library versions is there:

Caused by: org.postgresql.util.PSQLException: ERROR: column "my_guid" is of type uuid but expression is of type bytea
  You will need to rewrite or cast the expression.
  Position: 238
    at org.postgresql.core.v3.QueryExecutorImpl.receiveErrorResponse(QueryExecutorImpl.java:2676) ~[postgresql-42.5.1.jar:42.5.1]
    at org.postgresql.core.v3.QueryExecutorImpl.processResults(QueryExecutorImpl.java:2366) ~[postgresql-42.5.1.jar:42.5.1]
    at org.postgresql.core.v3.QueryExecutorImpl.execute(QueryExecutorImpl.java:356) ~[postgresql-42.5.1.jar:42.5.1]
    at org.postgresql.jdbc.PgStatement.executeInternal(PgStatement.java:496) ~[postgresql-42.5.1.jar:42.5.1]
    at org.postgresql.jdbc.PgStatement.execute(PgStatement.java:413) ~[postgresql-42.5.1.jar:42.5.1]
    at org.postgresql.jdbc.PgPreparedStatement.executeWithFlags(PgPreparedStatement.java:190) ~[postgresql-42.5.1.jar:42.5.1]
    at org.postgresql.jdbc.PgPreparedStatement.executeUpdate(PgPreparedStatement.java:152) ~[postgresql-42.5.1.jar:42.5.1]
    at net.sf.log4jdbc.sql.jdbcapi.PreparedStatementSpy.executeUpdate(PreparedStatementSpy.java:1080) ~[log4jdbc-log4j2-jdbc4.1-1.16.jar:?]
    at com.zaxxer.hikari.pool.ProxyPreparedStatement.executeUpdate(ProxyPreparedStatement.java:61) ~[HikariCP-5.0.1.jar:?]
    at com.zaxxer.hikari.pool.HikariProxyPreparedStatement.executeUpdate(HikariProxyPreparedStatement.java) ~[HikariCP-5.0.1.jar:?]
    at org.hibernate.engine.jdbc.internal.ResultSetReturnImpl.executeUpdate(ResultSetReturnImpl.java:197) ~[hibernate-core-6.1.6.Final.jar:6.1.6.Final]
    at org.hibernate.dialect.identity.GetGeneratedKeysDelegate.executeAndExtract(GetGeneratedKeysDelegate.java:57) ~[hibernate-core-6.1.6.Final.jar:6.1.6.Final]
    at org.hibernate.id.insert.AbstractReturningDelegate.performInsert(AbstractReturningDelegate.java:42) ~[hibernate-core-6.1.6.Final.jar:6.1.6.Final]
    at org.hibernate.persister.entity.AbstractEntityPersister.insert(AbstractEntityPersister.java:3327) ~[hibernate-core-6.1.6.Final.jar:6.1.6.Final]
    at org.hibernate.persister.entity.AbstractEntityPersister.insert(AbstractEntityPersister.java:3965) ~[hibernate-core-6.1.6.Final.jar:6.1.6.Final]
    at org.hibernate.action.internal.EntityIdentityInsertAction.execute(EntityIdentityInsertAction.java:80) ~[hibernate-core-6.1.6.Final.jar:6.1.6.Final]
    at org.hibernate.engine.spi.ActionQueue.execute(ActionQueue.java:653) ~[hibernate-core-6.1.6.Final.jar:6.1.6.Final]
    at org.hibernate.engine.spi.ActionQueue.addResolvedEntityInsertAction(ActionQueue.java:283) ~[hibernate-core-6.1.6.Final.jar:6.1.6.Final]
    at org.hibernate.engine.spi.ActionQueue.addInsertAction(ActionQueue.java:264) ~[hibernate-core-6.1.6.Final.jar:6.1.6.Final]
    at org.hibernate.engine.spi.ActionQueue.addAction(ActionQueue.java:322) ~[hibernate-core-6.1.6.Final.jar:6.1.6.Final]
    at org.hibernate.event.internal.AbstractSaveEventListener.addInsertAction(AbstractSaveEventListener.java:340) ~[hibernate-core-6.1.6.Final.jar:6.1.6.Final]
    at org.hibernate.event.internal.AbstractSaveEventListener.performSaveOrReplicate(AbstractSaveEventListener.java:286) ~[hibernate-core-6.1.6.Final.jar:6.1.6.Final]
    at org.hibernate.event.internal.AbstractSaveEventListener.performSave(AbstractSaveEventListener.java:192) ~[hibernate-core-6.1.6.Final.jar:6.1.6.Final]
    at org.hibernate.event.internal.AbstractSaveEventListener.saveWithGeneratedId(AbstractSaveEventListener.java:122) ~[hibernate-core-6.1.6.Final.jar:6.1.6.Final]
    at org.hibernate.event.internal.DefaultPersistEventListener.entityIsTransient(DefaultPersistEventListener.java:184) ~[hibernate-core-6.1.6.Final.jar:6.1.6.Final]
    at org.hibernate.event.internal.DefaultPersistEventListener.onPersist(DefaultPersistEventListener.java:129) ~[hibernate-core-6.1.6.Final.jar:6.1.6.Final]
    at org.hibernate.event.internal.DefaultPersistEventListener.onPersist(DefaultPersistEventListener.java:53) ~[hibernate-core-6.1.6.Final.jar:6.1.6.Final]
    at org.hibernate.event.service.internal.EventListenerGroupImpl.fireEventOnEachListener(EventListenerGroupImpl.java:107) ~[hibernate-core-6.1.6.Final.jar:6.1.6.Final]
    at org.hibernate.internal.SessionImpl.firePersist(SessionImpl.java:737) ~[hibernate-core-6.1.6.Final.jar:6.1.6.Final]
    at org.hibernate.internal.SessionImpl.persist(SessionImpl.java:721) ~[hibernate-core-6.1.6.Final.jar:6.1.6.Final]
    at jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:104) ~[?:?]
    at java.lang.reflect.Method.invoke(Method.java:578) ~[?:?]
    at org.springframework.orm.jpa.SharedEntityManagerCreator$SharedEntityManagerInvocationHandler.invoke(SharedEntityManagerCreator.java:307) ~[spring-orm-6.0.3.jar:6.0.3]
    at jdk.proxy2.$Proxy138.persist(Unknown Source) ~[?:?]
    at org.springframework.data.jpa.repository.support.SimpleJpaRepository.save(SimpleJpaRepository.java:610) ~[spring-data-jpa-3.0.0.jar:3.0.0]

Thanks for help.

Answer 1

Problem is in Dialect class. Uuid is registered only if version is >= 8.2, but when I check what getVersion() returns, it's 8.0 (default). PostgreSQL server is 15.1.

protected void registerColumnTypes(TypeContributions typeContributions, ServiceRegistry serviceRegistry) {
    if (this.getVersion().isSameOrAfter(8, 2)) {
                ddlTypeRegistry.addDescriptor(new DdlTypeImpl(3000, "uuid", this));
    }

You have to create Dialect class and specify version:

public class CustomPostgresDialect extends org.hibernate.dialect.PostgreSQLDialect {

    public CustomPostgresDialect() {
        super(DatabaseVersion.make(15, 1));
    }