Module io.helidon.builder.config

Package io.helidon.builder.config.spi

Interface StringValueParser

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 StringValueParser

String value parser.

Method Summary

Modifier and Type	Method	Description
<R> Optional<R>	parse(String val, Class<R> type)	Parse the string into a type R instance.

Method Details

parse

<R> Optional<R> parse(String val,
 Class<R> type)

Parse the string into a type R instance. Note that this method returns an optional since some parsers may choose to map to null for certain types and value combinations (e.g., empty string "" mapping to null value).

Type Parameters:

R - the return type

Parameters:

val - the string value to parse

type - the type of the result expected

Returns:

the optional nullable parsed value

Throws:

IllegalArgumentException - if the format is not parsable or the return type is not supported