Hibernate 5-createCriteria已弃用 [英] Hibernate 5 - createCriteria deprecated

问题描述

我需要一个帮助，以createCriteria的代码迁移Hibernate 5的代码，如下所示:

I need a help to migrate the code with createCriteria for Hibernate 5, the code is this below:

public Curso comDadosIguais(Curso curso) {
    return (Curso) this.session.createCriteria(Curso.class)
            .add(Restrictions.eq("codigo", curso.getCodigo()))
            .uniqueResult();
}

你能帮我吗?

推荐答案

您可以使用许多选项来从不推荐使用的Hibernate Criteria API进行迁移，这些只是马上想到的几个:

There are a number of options you can exercise to migrate from the deprecated Hibernate Criteria API, these are just a few that immediately come to mind:

• HQL/JPQL
• 命名查询
• JPA标准API

从HQL/JPQL的角度来看，您可以将查询重写为字符串:

From a HQL / JPQL perspective, you could rewrite your query as a string:

Curso result = session.createQuery( "FROM Curso WHERE codigo = :codigo" )
     .setParameter( "codigo", curso.getCodigo() )
     .uniqueResult();

您还可以使用@NamedQuery，它基本上是应用于实体或程序包的注释，您可以在其中提供HQL查询，就像上面看到的一样，以相同的方式为查询参数指定一个占位符，然后当您执行查询时，在运行时提供这些参数，例如:

You can also use a @NamedQuery which is basically an annotation you apply to an entity or a package where you supply a HQL query much like you see above, specifying a placeholder for your query parameters much in the same way and then supplying those parameters are runtime when you execute the query, like:

Curso result = session.createNamedQuery( "Curso.findByCodigo" )
     .setParameter( "codigo", curso.getCodigo() )
     .uniqueResult();

最后，您还可以考虑JPA Criteria API.如果您使用的是JPA EntityManager而不是Hibernate Session，则可以使用此功能.

And finally, you can also consider the JPA Criteria API. This is available if you're using a JPA EntityManager rather than a Hibernate Session.

CriteriaBuilder cb = entityManager.getCriteriaBuilder();
CriteriaQuery<Curso> query = cb.createQuery( Curso.class );
Root<Curso> root = query.from( Curso.class );

query.select( root )
     .where( cb.eq( root.get( "codigo" ), curso.getCodigo() ) );

Curso result = entityManager.createQuery( query ).getSingleResult();

这篇关于Hibernate 5-createCriteria已弃用的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！