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Cannot get update query to work with Hibernate


Cannot get update query to work with Hibernate

By : Felipe Tappata
Date : November 21 2020, 03:00 PM
will be helpful for those in need You should use @Transactional annotation so that the compiler knows that the transaction is manipulating the database, thus permits to perform Data Manipulation queries or it will simply execute it as a Data Definition Language query. Look at the code snippet below, for example,
code :
@Transactional
public Employee editEmployee(Employee employee) { //employee is the data you got through post
    return entityManager.merge(e1);

}


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Hibernate hibernate.hbm2ddl.auto=create/update/validate doesn't work for correctly for custom dialects?

Hibernate hibernate.hbm2ddl.auto=create/update/validate doesn't work for correctly for custom dialects?


By : user3623731
Date : March 29 2020, 07:55 AM
I wish this help you It's a bit strange, but hibernate somewhere in versions 3.4-3.6 changed binding of "text" mapping (actually hibernate have two types of mapping for long strings: clob and text).
In version 3.3 both mapping (clob and text) were mapped to Types.CLOB.
code :
public class SQLServer2000UnicodeDialect extends SQLServerDialect {

    public SQLServer2000UnicodeDialect(){
        super();
        ...
        registerColumnType( Types.CLOB, "ntext" );
        registerColumnType( Types.LONGVARCHAR, "ntext" );

        ...
    }
}
How to update the JPA/Hibernate @Version field in a Spring Data JPA @Modifying @Query query?

How to update the JPA/Hibernate @Version field in a Spring Data JPA @Modifying @Query query?


By : CatMario
Date : March 29 2020, 07:55 AM
Hope this helps You can add u.version=u.version+1 to the query. The updated @Querys look like this:
code :
import org.springframework.data.jpa.repository.Modifying;
import org.springframework.data.jpa.repository.Query;
import org.springframework.data.repository.CrudRepository;

public interface UserRepository extends CrudRepository<User, Long> {

    @Modifying
    @Query("UPDATE User u SET u.version=u.version+1, u.active = false WHERE u.id = ?1")
    void deactivate(Long id);

    @Modifying
    @Query("UPDATE User u SET u.version=u.version+1, u.active = false WHERE u.id IN :ids")
    void deactivateAll(@Param("ids") Long... ids);

    @Modifying
    @Query("UPDATE User u SET u.version=u.version+1, u.active = false WHERE u.id IN :ids")
    void deactivateAll(@Param("ids") Iterable<Long> ids);

}
Execute query with native query (update query) in Hibernate 5.x

Execute query with native query (update query) in Hibernate 5.x


By : user7960817
Date : March 29 2020, 07:55 AM
I think the issue was by ths following , Try to use @Transactional over your methods and use getCurrentSession() instead of the openSession()
And your code has session.close() statement which doesn't make sense any more, since the connection was already closed and managed by the spring. Try removing the session.close() statement and try again
Spring Hibernate @Data update vs raw UPDATE query: Optimistic Lock Exception despite @Transactional?

Spring Hibernate @Data update vs raw UPDATE query: Optimistic Lock Exception despite @Transactional?


By : Hemangi
Date : March 29 2020, 07:55 AM
will help you I'm not sure why you think that @Transactional should make your OptimisticLockingException go away. Optimistic locking is all about concurrency of different transactions.
It works by incrementing a version in each transaction and also checking on updates that the version is still unchanged from when the entity was loaded.
Hibernate model class config doesn't reflect in CREATE TABLE query with "hibernate.hbm2ddl.auto = update"

Hibernate model class config doesn't reflect in CREATE TABLE query with "hibernate.hbm2ddl.auto = update"


By : MillionSky
Date : March 29 2020, 07:55 AM
wish help you to fix your issue I'm working on a Spring(4.x)-Hibernate(5.2.x) web-application project. , With current version of jpa (hibernate provider),
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