Package net.kaczmarzyk.spring.data.jpa.domain

Class IsEmpty<T>

java.lang.Object
net.kaczmarzyk.spring.data.jpa.domain.PathSpecification<T>
net.kaczmarzyk.spring.data.jpa.domain.IsEmpty<T>
All Implemented Interfaces:
Serializable, WithoutTypeConversion, ZeroArgSpecification, org.springframework.data.jpa.domain.Specification<T>
public class IsEmpty<T> extends PathSpecification<T> implements WithoutTypeConversion, ZeroArgSpecification

Filters with "is empty" where-clause for collections (e.g. where customer.orders is empty).

Does not require any http-parameters to be present, i.e. represents constant part of the query.

Author:
Hubert Gotfryd (Tratif sp. z o.o.)
See Also:

  • Field Summary

    Fields inherited from class net.kaczmarzyk.spring.data.jpa.domain.PathSpecification

    path

  • Constructor Summary

    Constructors
    Constructor
    Description
    IsEmpty(QueryContext queryContext, String path, String[] args)
     

  • Method Summary

    Modifier and Type
    Method
    Description
    jakarta.persistence.criteria.Predicate
    toPredicate(jakarta.persistence.criteria.Root<T> root, jakarta.persistence.criteria.CriteriaQuery<?> query, jakarta.persistence.criteria.CriteriaBuilder criteriaBuilder)
     
    String
    toString()
     

    Methods inherited from class net.kaczmarzyk.spring.data.jpa.domain.PathSpecification

    equals, hashCode, path

    Methods inherited from class java.lang.Object

    clone, finalize, getClass, notify, notifyAll, wait, wait, wait

    Methods inherited from interface org.springframework.data.jpa.domain.Specification

    and, or

  • Constructor Details

  • Method Details

    • toPredicate

      public jakarta.persistence.criteria.Predicate toPredicate(jakarta.persistence.criteria.Root<T> root, jakarta.persistence.criteria.CriteriaQuery<?> query, jakarta.persistence.criteria.CriteriaBuilder criteriaBuilder)
      Specified by:
      toPredicate in interface org.springframework.data.jpa.domain.Specification<T>

    • toString

      public String toString()
      Overrides:
      toString in class Object