Package com.blazebit.persistence.deltaspike.data

Interface Specification<T>

  • Type Parameters:
    T - The entity type
    public interface Specification<T>
    A type to represent a specific view on data, heavily inspired by Spring Data's Specification.
    Since:
    1.2.0
    Author:
    Christian Beikov

    • Method Summary

      All Methods Instance Methods Abstract Methods 
      Modifier and Type Method Description
      javax.persistence.criteria.Predicate toPredicate​(javax.persistence.criteria.Root<T> root, javax.persistence.criteria.CriteriaQuery<?> query, javax.persistence.criteria.CriteriaBuilder cb)
      Creates a WHERE clause for a query of the referenced entity in form of a Predicate for the given Root and CriteriaQuery.

    • Method Detail

      • toPredicate

        javax.persistence.criteria.Predicate toPredicate​(javax.persistence.criteria.Root<T> root,
                                                 javax.persistence.criteria.CriteriaQuery<?> query,
                                                 javax.persistence.criteria.CriteriaBuilder cb)
        Creates a WHERE clause for a query of the referenced entity in form of a Predicate for the given Root and CriteriaQuery.
        Parameters:
        root - The query root
        query - The criteria query
        Returns:
        a Predicate, may be null