How to use

PersistenceProvider

in

org.jboss.forge.addon.javaee.jpa

private void initProviders()
{
 jpaProvider.setItemLabelConverter(PersistenceProvider::getName);
 // select Hibernate provider as the default one
 final PersistenceProvider hibernate = StreamSupport.stream(jpaProvider.getValueChoices().spliterator(), false)
      .filter(provider -> provider.getName().toLowerCase().contains("hibernate"))
      .findFirst()
      .orElseThrow(() -> new IllegalStateException("Hibernate Persistence Provider is not available"));
 jpaProvider.setDefaultValue(hibernate);
}

@SuppressWarnings({ "rawtypes", "unchecked" })
private MetaModelProvider lookupProvider()
{
 PersistenceCommonDescriptor config = (PersistenceCommonDescriptor) getFaceted().getFacet(JPAFacet.class)
      .getConfig();
 List<PersistenceUnitCommon> allPersistenceUnit = config.getAllPersistenceUnit();
 String providerName = allPersistenceUnit.size() > 0 ? allPersistenceUnit.get(0)
      .getProvider() : null;
 Imported<PersistenceProvider> services = SimpleContainer.getServices(getClass().getClassLoader(),
      PersistenceProvider.class);
 for (PersistenceProvider candidate : services)
 {
   try
   {
    if (Strings.compare(candidate.getProvider(), providerName))
    {
      return candidate.getMetaModelProvider();
    }
   }
   finally
   {
    services.release(candidate);
   }
 }
 // return Hibernate
 return services.get().getMetaModelProvider();
}

  public void validate() throws Exception
  {
   getContainer().validate(this);
   getProvider().validate(this);
  }
}