jpa-criteria

In my entity I have two fields : private LocalDate startDate = LocalDate.of(1900, 1, 1); private LocalDate endDate = LocalDate.of(3000, 1, 1); Using JPA Criteria API I want to select entities where LocalDate.now() > startDate and LocalDate.now() < endDate . I tried as following : predicates.add(builder.greaterThan(LocalDate.now(), path.<LocalDate> get(Entity_.startDate))); predicates.add(builder.lessThan(builder.currentDate(), path.<LocalDate> get(Entity_.endDate))); But I get this error : The method greaterThan(Expression<? extends Y>, Expression<? extends Y>) in the type CriteriaBuilder is

Say, I have the following entity class: Person.java @Entity public class Person { @Id private String name; private String[] cars; // Constructor, getters and setters } And the repository: PersonRepository.java public interface PersonRepository extends CrudRepository<Person, String> { // this is unclear! List<Person> getAllByCars...(String car) } Is there a method that returns all persons, whose car array contains one given car (the String parameter above)? For me, it seems that all supported JPA keywords can only deal with single elements, but not with arrays. Thanks for help! Ideally, You

Spring Boot here. I'm trying to wrap my head around JpaRepositories and Specifications when used in the context of implementing complex queries and am struggling to see the "forest through the trees" on several items. A canonical example of a Specification is as follows: public class PersonSpecification implements Specification<Person> { private Person filter; public PersonSpecification(Person filter) { super(); this.filter = filter; } public Predicate toPredicate(Root<Person> root, CriteriaQuery<?> cq, CriteriaBuilder cb) { Predicate p = cb.disjunction(); if (filter.getName() != null) { p

I want to create a multi field search in a Spring-Boot back-end. How to do this with a Specification<T> ? Environment Springboot Hibernate Gradle Intellij The UI in the front end is a Jquery Datatable. Each column allows a single string search term to be applied. The search terms across more than one column is joined by a and . I have the filters coming from the front end already getting populated into a Java object. Step 1 Extend JPA Specification executor public interface SomeRepository extends JpaRepository<Some, Long>, PagingAndSortingRepository<Some, Long>, JpaSpecificationExecutor {