NetBeans generates JpaController with errors

Question

Hi, I am using NetBeans 6.8 for building Spring MVC application.

Technologies :

• Spring MVC 2.5
• Derby DB
• Hibernate for ORM
• GlassFish v3 server

I use New JPA Controller Classes from Entity Classes for adding ORM file. It is supposed to generate class for managing queries with my POJO files.

Problem is, that NetBeans generates following code, and won't compile :

public int getBrandCount() {
        EntityManager em = getEntityManager();
        try {
            CriteriaQuery cq = em.getCriteriaBuilder().createQuery();
            Root<Brand> rt = cq.from(Brand.class);
            cq.select(em.getCriteriaBuilder().count(rt));
            Query q = em.createQuery(cq);
            return ((Long) q.getSingleResult()).intValue();
        } finally {
            em.close();
        }
    }

At the picture, there is NetBeans error :

It looks like method getCriteriaBuilder of Entity Manager Interface is unimplemented. Or some other reason why I can't use it in code.

I don't know what other info should I provide, so please ask if anything comes to your mind.

Thanks

Answer 1

NetBeans is generating JPA 2.0 code so you need the JPA 2.0 API on your class path to compile your code (and a JPA 2.0 provider to run it). Since you're using Hibernate, here are the required libraries to use Hibernate Entity Manager 3.5.1-Final:

org.hibernate:hibernate-entitymanager:jar:3.5.1-Final:compile
+- org.hibernate:hibernate-core:jar:3.5.1-Final:compile
|  +- antlr:antlr:jar:2.7.6:compile
|  +- commons-collections:commons-collections:jar:3.2:compile
|  +- dom4j:dom4j:jar:1.6.1:compile
|  |  \- xml-apis:xml-apis:jar:1.0.b2:compile
|  \- javax.transaction:jta:jar:1.1:compile
+- org.hibernate:hibernate-annotations:jar:3.5.1-Final:compile
|  \- org.hibernate:hibernate-commons-annotations:jar:3.2.0.Final:compile
+- cglib:cglib:jar:2.2:compile
|  \- asm:asm:jar:3.1:compile
+- javassist:javassist:jar:3.9.0.GA:compile
\- org.hibernate.javax.persistence:hibernate-jpa-2.0-api:jar:1.0.0.Final:compile