eu.vaadinonkotlin.vaadin8.jpa

Interface JPAFilter

All Known Implementing Classes:

AndFilter, EqFilter, Ge2Filter, GeFilter, Gt2Filter, GtFilter, ILikeFilter, IsNotNullFilter, IsNullFilter, IsTrueFilter, Le2Filter, LeFilter, LikeFilter, Lt2Filter, LtFilter, NotFilter, OrFilter

public JPAFilter

A JPA filter. See concrete implementation classes for further information.

Nested Class Summary

Nested Classes

Modifier and Type	Interface and Description
static class	JPAFilter.DefaultImpls A JPA filter. See concrete implementation classes for further information.

Method Summary

Modifier and Type	Method and Description
JPAFilter	and(JPAFilter other) Produces a filter which only matches rows which are matched both by this and the other filter.
JPAFilter	not() Negates this filter.
JPAFilter	or(JPAFilter other) Produces a filter which matches rows which are matched by either this or the other filter.
javax.persistence.criteria.Predicate	toPredicate(javax.persistence.criteria.CriteriaBuilder cb, javax.persistence.criteria.Root<?> root) Converts this filter to a JPA Criteria API Predicate.

Method Detail

toPredicate

javax.persistence.criteria.Predicate toPredicate(javax.persistence.criteria.CriteriaBuilder cb,
                                                 javax.persistence.criteria.Root<?> root)

Converts this filter to a JPA Criteria API Predicate.

Parameters:

cb - the criteria builder which contains factory methods for various Predicates.

root - creates Expressions for fields

Returns:

a predicate which actually matches the database rows.

not

JPAFilter not()

Negates this filter.

Returns:

this filter negated.

and

JPAFilter and(JPAFilter other)

Produces a filter which only matches rows which are matched both by this and the other filter.

Parameters:

other - rows must match also this filter.

Returns:

AND of this and other

or

JPAFilter or(JPAFilter other)

Produces a filter which matches rows which are matched by either this or the other filter.

Parameters:

other - rows may match also this filter.

Returns:

OR of this and other