io.cucumber.cucumberexpressions

Interface Transformer<T>

Type Parameters:

T - the type to transform to.

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 Transformer<T>

Transformer for a @ParameterType with zero or one capture groups.

Method Summary

Modifier and Type	Method and Description
T	transform(String arg) Transforms a string into to an object.

Method Detail

transform

T transform(String arg)
     throws Throwable

Transforms a string into to an object. The string is either taken from the sole capture group or matches the whole expression. Nested capture groups are ignored.

If the capture group is optional arg may be null.

Parameters:

arg - the value of the single capture group

Returns:

the transformed object

Throws:

Throwable - if transformation failed