JpaExtension.java 文件源码

public <T> void processAnnotatedType(@Observes ProcessAnnotatedType<T> event, BeanManager manager) {
    boolean hasPersistenceField = false;
    for (AnnotatedField<? super T> field : event.getAnnotatedType().getFields()) {
        if (field.isAnnotationPresent(PersistenceContext.class)
                || field.isAnnotationPresent(PersistenceUnit.class)) {
            hasPersistenceField = true;
            break;
        }
    }
    if (hasPersistenceField) {
        PersistenceAnnotatedType<T> pat = new PersistenceAnnotatedType<T>(manager, event.getAnnotatedType());
        beans.addAll(pat.getProducers());
        event.setAnnotatedType(pat);
    }
}