org.everit.json.schema

Interface FormatValidator

All Known Implementing Classes:

AFormatValidator, DateFormatValidator, DateTimeFormatValidator, EmailFormatValidator, HostnameFormatValidator, IPAddressValidator, IPV4Validator, IPV6Validator, JsonPointerFormatValidator, RegexFormatValidator, RelativeJsonPointerFormatValidator, TemporalFormatValidator, TimeFormatValidator, URIFormatValidator, URIReferenceFormatValidator, URITemplateFormatValidator, URIV4FormatValidator, WrappingFormatValidator

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 FormatValidator

Implementations perform the validation against the "format" keyword (see JSON Schema spec section 7).

Field Summary

Fields

Modifier and Type	Field and Description
static FormatValidator	NONE No-operation implementation (never throws {always returns Optional.empty()).

Method Summary

Modifier and Type	Method and Description
java8.util.Optional<String>	validate(String subject) Implementation-specific validation of subject.

Field Detail

NONE

static final FormatValidator NONE

No-operation implementation (never throws {always returns Optional.empty()).

Method Detail

validate

java8.util.Optional<String> validate(String subject)

Implementation-specific validation of subject. If a validation error occurs then implementations should return a programmer-friendly error message as a String wrapped in an Optional. If the validation succeeded then an empty optional should be returned.

Parameters:

subject - the string to be validated

Returns:

an Optional wrapping the error message if a validation error occured, otherwise an empty optional.