/**
* Creates a new count query for the given {@link
* org.springframework.data.jpa.domain.Specification}.
*
* @param spec can be {@literal null}.
* @return
*/
protected TypedQuery<Long> getCountQuery(Specification<M> spec) {
CriteriaBuilder builder = em.getCriteriaBuilder();
CriteriaQuery<Long> query = builder.createQuery(Long.class);
Root<M> root = applySpecificationToCriteria(spec, query);
if (query.isDistinct()) {
query.select(builder.countDistinct(root));
} else {
query.select(builder.count(root));
}
TypedQuery<Long> q = em.createQuery(query);
repositoryHelper.applyEnableQueryCache(q);
return q;
}
/**
* Creates a {@link javax.persistence.TypedQuery} for the given {@link
* org.springframework.data.jpa.domain.Specification} and {@link
* org.springframework.data.domain.Sort}.
*
* @param spec can be {@literal null}.
* @param sort can be {@literal null}.
* @return
*/
protected TypedQuery<M> getQuery(Specification<M> spec, Sort sort) {
CriteriaBuilder builder = em.getCriteriaBuilder();
CriteriaQuery<M> query = builder.createQuery(entityClass);
Root<M> root = applySpecificationToCriteria(spec, query);
query.select(root);
applyJoins(root);
if (sort != null) {
query.orderBy(toOrders(sort, root, builder));
}
TypedQuery<M> q = em.createQuery(query);
repositoryHelper.applyEnableQueryCache(q);
return applyLockMode(q);
}