jpa 元模型

maven

   2.3.3

      ${project.name}
      
         
            org.springframework.boot
            spring-boot-maven-plugin
            
               
                  
                     repackage
                  
               
            
         
      

      
      

         
            org.apache.maven.plugins
            maven-compiler-plugin
            ${maven-compiler-plugin.version}
            

               
                  org.hibernate.jpamodelgen.JPAMetaModelEntityProcessor,lombok.launch.AnnotationProcessorHider$AnnotationProcessor
               

               ${java.version}
               ${java.version}
               

                  
                     org.projectlombok
                     lombok
                     ${lombok.version}
                  

                  
                  
                     org.hibernate
                     hibernate-jpamodelgen
                     ${hibernate.version}
                  
                  
                     org.glassfish.jaxb
                     jaxb-runtime
                     ${jaxb-runtime.version}
                  

               

            
         

      
      
   

   


      
         IDE
         




            
               org.hibernate
               hibernate-jpamodelgen
            

         
      


   

 org.hibernate
 hibernate-jpamodelgen
 provided

CriteriaBuilder builder = em.getCriteriaBuilder();

        CriteriaQuery query = builder.createQuery(UserRoleVo.class);

        Root postComment = query.from(UserEntity.class);
        Join post = postComment.join(UserEntity_.level);

        query.multiselect(
        postComment.get(UserEntity_.CODE).alias(UserEntity_.CODE),
        postComment.get(UserEntity_.TREE_ID).alias(UserEntity_.TREE_ID),
        post.get(RoleEntity_.TITLE_FILED).alias(RoleEntity_.TITLE_FILED)
        );

        query.where(
        builder.and(
        builder.like(
        post.get(RoleEntity_.NAME),
        "%工%"
        )
//                        ,
//                        builder.equal(
//                                post.get(RoleEntity_.details).get(RoleEntityDetails_.CREATED_BY),
//                                "Vlad Mihalcea"
//                        )
        )
        );

        List comments = entityManager
        .createQuery(query)
        .unwrap(Query.class)
        .getResultList();