BaseBuilder<B extends BaseBuilder<B, T>, T> class

Base functionality shared by all typed builders.

This class provides the core builder pattern functionality including:

• Method chaining for fluent API
• Negation support (using not)
• Error message customization
• Optional/nullable modifiers
• Final validator building

Builder Pattern Usage:

// Basic chaining
final validator = v().string().lengthMin(5).email().build();

// Negation
final notEmpty = v().string().not().empty().build();

// Custom error messages
final customError = v().string().lengthMin(5).error("Name too short").build();

// Optional fields
final optionalField = v().string().optional().lengthMin(2).build();

Inheritance

• Object
• IValidator
• BaseBuilder

Implementers

• BoolBuilder
• BoolMixin
• ComparisonMixin
• ContainsMixin
• DateTimeBuilder
• DateTimeMixin
• EmptyMixin
• GenericBuilder
• IterableBuilder
• IterableMixin
• JsonDecodedBuilder
• JsonMixin
• LengthMixin
• MapBuilder
• MapMixin
• NumberBuilder
• NumberMixin
• StringBuilder
• StringMixin
• TransformerMixin

Available extensions

• EskemaEskValidatorOperations

Constructors

BaseBuilder({bool negated = false, Chain? chain, bool? optional, bool? nullable})

Properties

chain → Chain

final

hashCode → int

The hash code for this object.

no setter, inherited

isNullable → bool

final, inherited

isOptional → bool

final, inherited

negated ↔ bool

getter/setter pair

not → B

Return a negated version of the builder (the negation flag is consumed by the next added validator)

no setter

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

self → B

no setter

Methods

add(IValidator validator, {String? message}) → B

Add a validator to the chain.

build() → IValidator

Build resulting validator.

copyWith({bool? nullable, bool? optional}) → IValidator

override

deepEq(T value, {String? message}) → B

Require the value to be deeply equal to the specified value.

eq(T value, {String? message}) → B

Require the value to be equal to the specified value.

error(String message) → B

Override final error message (retains codes).

isNotValid(dynamic value) → bool

inherited

isNotValidAsync(dynamic value) → FutureOr<bool>

inherited

isValid(dynamic value) → bool

inherited

isValidAsync(dynamic value) → FutureOr<bool>

inherited

noSuchMethod(Invocation invocation) → dynamic

Invoked when a nonexistent method or property is accessed.

inherited

nullable<_>({String? message}) → B

Mark current chain nullable (null accepted as valid).

override

oneOf(Iterable<T> values, {String? message}) → B

Require the value to be one of the specified options.

optional<_>() → B

Mark current chain optional (skipped when key absent).

override

toString() → String

A string representation of this object.

inherited

validate(dynamic value, {bool? exists}) → Result

Convenience validate (sync only chain).

override

validateAsync(dynamic value, {bool? exists}) → Future<Result>

Convenience validateAsync (mixed / async).

override

validateOrThrow(dynamic value) → Result

inherited

validator(dynamic value) → FutureOr<Result>

override

wrap(IValidator fn(IValidator), {String? message}) → B

Wrap the current chain with a custom function.

Operators

operator &(IValidator other) → IValidator

Available on IValidator, provided by the EskemaEskValidatorOperations extension

Combines two validators with a logical AND, same as using all

operator ==(Object other) → bool

The equality operator.

inherited

operator >(Expectation error) → IValidator

Available on IValidator, provided by the EskemaEskValidatorOperations extension

Returns a new validator that will return the error message if the validation fails

operator |(IValidator other) → IValidator

Available on IValidator, provided by the EskemaEskValidatorOperations extension

Combines two validators with a logical OR, same as using any