CODEWITHSUNDEEP
jpacriteria-api
user2190192
user2190192

Reputation: 43

JPA find entities where date is between start and end date that can be null using Criteria

CriteriaBuilder builder = em.getCriteriaBuilder();
    CriteriaQuery cQuery = builder.createQuery();
    Root<AcsTemplateDateJPA> root = cQuery.from(AcsTemplateDateJPA.class);
    ParameterExpression<Date> d = builder.parameter(Date.class);
    cQuery.where(builder.between(d, root.<Date>get("inservicedate"), root.<Date>get("outservicedate"))); 
    Query query = em.createQuery(cQuery.select(root.get("acstemplateid"))).setParameter(d, planDate, TemporalType.DATE);
    List results =query.getResultList();

here outService date can be null (the end is infinitely in the future) how i can add this condition?

Thanks,

Upvotes: 4

Views: 22139

Answers (2)

Nicu Jalba
Nicu Jalba

Reputation: 1

This should be self explanatory:

                @Override
                public Predicate toPredicate( Root<OrganizationCommission> root, CriteriaQuery<?> query,
                                              CriteriaBuilder cb )
                {
                    // The predicate validFrom - the column should contains null or values less than validityDate
                    Predicate validFrom = cb.or( root.get( OrganizationCommission_.validFrom ).isNull(),
                                                 cb.lessThanOrEqualTo(
                                                         root.get( OrganizationCommission_.validFrom ),
                                                         validityDate ) );
                    // The predicate validTo - the column should contains null or values greater than validityDate
                    Predicate validTo = cb.or( root.get( OrganizationCommission_.validTo ).isNull(),
                                               cb.greaterThanOrEqualTo( root.get( OrganizationCommission_.validTo ),
                                                                        validityDate ) );
                    Predicate predicate = cb.conjunction();
                    predicate.getExpressions().add( cb.and( validFrom, validTo ) );
                    return predicate;
                }

Upvotes: -2

perissf
perissf

Reputation: 16273

I would split the date comparison in two blocks, and test if outservicedate isNull(). Something like:

Predicate startPredicate = builder.greaterThanOrEqualTo(root.<Date>get("inservicedate"), d);
Path<Date> outServiceDate = root.<Date>get("outservicedate");
Predicate endPredicate = builder.or(builder.isNull(outServiceDate), builder.lessThanOrEqualTo(outServiceDate, d));
Predicate finalCondition = builder.and(startPredicate, endPredicate);

Upvotes: 14

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