fluent.validation

Interface TransformationBuilder<V,R>

Type Parameters:

V - Type of the value, for which this builder receives a check.

R - Return type.

Functional Interface:

This is a functional interface and can therefore be used as the assignment target for a lambda expression or method reference.

@FunctionalInterface
public interface TransformationBuilder<V,R>

Simple builder of a check. It is general interface, that can be used in different situations, like composing a complex check using partial ones, or collecting a complex set of conditions.

Method Summary

Modifier and Type	Method and Description
default R	equalTo(V expectedValue) Set expected value, to which the actual one needs to be equal.
default <U> TransformationBuilder<U,R>	having(String name, Transformation<V,U> transformation) Chain additional transformation, ending up with null safe chaining.
default <U> TransformationBuilder<U,R>	having(Transformation<V,U> transformation) Chain additional transformation, ending up with null safe chaining.
R	matching(Check<? super V> check) Set check, that a value must match.

Method Detail

matching

R matching(Check<? super V> check)

Set check, that a value must match.

Parameters:

check - Check to be met.

Returns:

Followup of the builder.

equalTo

default R equalTo(V expectedValue)

Set expected value, to which the actual one needs to be equal.

Parameters:

expectedValue - Expected value.

Returns:

Followup of the builder.

having

default <U> TransformationBuilder<U,R> having(String name,
                                              Transformation<V,U> transformation)

Chain additional transformation, ending up with null safe chaining.

Type Parameters:

U - Type of the transformed value.

Parameters:

name - Description of the transformation (typically name of a field to access).

transformation - Functional interface to provide transformation logic.

Returns:

Return check builder for building the check further.

having

default <U> TransformationBuilder<U,R> having(Transformation<V,U> transformation)

Chain additional transformation, ending up with null safe chaining.

Type Parameters:

U - Type of the transformed value.

Parameters:

transformation - Functional interface to provide transformation logic.

Returns:

Return check builder for building the check further.