GeneralPurposeCombinators

Type Members

1. class AnInstanceOf[T <: AnyRef] extends NullSafeValidator[AnyRef]

   

   A validator that succeeds only if the validated object is an instance of the specified type.

   A validator that succeeds only if the validated object is an instance of the specified type. Respects nulls.

   T

   The desired type for objects under validation.

2. class And[T] extends Validator[T]

   

   A combinator that takes a chain of predicates and implements logical AND between them.

   A combinator that takes a chain of predicates and implements logical AND between them.

   T

   The type on which this validator operates.

3. class Conditional[T] extends Validator[T]

   

   A validator that branches at runtime based on the value of the object under validation.

   A validator that branches at runtime based on the value of the object under validation. Supports an optional fallback validator.

   T

   The object type this validator operates on.

4. class EqualTo[T] extends Validator[T]

   

   A validator that succeeds only if the validated object is equal to the specified value.

   A validator that succeeds only if the validated object is equal to the specified value. Respects nulls and delegates equality checks to java.lang.Object.equals.

5. class Fail[T] extends Validator[T]

   

   A validator that always fails with a specific violation.

   A validator that always fails with a specific violation.

   T

   The type on which this validator operates.

6. class IsNotNull extends BaseValidator[AnyRef]

   

   A validator that succeeds only if the provided object is not null.

7. class IsNull extends BaseValidator[AnyRef]

   

   A validator that succeeds only if the provided object is null.

8. class NilValidator[T] extends Validator[T]

   

   A validator that always succeeds.

   A validator that always succeeds.

   T

   The type on which this validator operates.

9. class NotAnInstanceOf[T <: AnyRef] extends NullSafeValidator[AnyRef]

   

   A validator that fails only if the validated object is an instance of the specified type.

   A validator that fails only if the validated object is an instance of the specified type. Respects nulls.

   T

   The undesirable type for objects under validation.

10. class NotEqualTo[T] extends Validator[T]

    

    A validator that succeeds only if the validated object is not equal to the specified value.

    A validator that succeeds only if the validated object is not equal to the specified value. Respects nulls and delegates equality checks to java.lang.Object.equals.

11. class Or[T] extends Validator[T]

    

    A combinator that takes a chain of predicates and implements logical OR between them.

    A combinator that takes a chain of predicates and implements logical OR between them. When all predicates fail, a com.wix.accord.GroupViolation is produced; the predicates comprise the group's children.

    T

    The type on which this validator operates.

12. class Valid[T] extends Validator[T]

    

    A validator which merely delegates to another, implicitly available validator.

    A validator which merely delegates to another, implicitly available validator. This is necessary for the description generation to work correctly, e.g. in the case where:

    case class Person( firstName: String, lastName: String ) case class Classroom( teacher: Person, students: Seq[ Person ] )

    implicit val personValidator = validator[ Person ] { p => p.firstName is notEmpty p.lastName is notEmpty }

    implicit val classValidator = validator[ Classroom ] { c => c.teacher is valid c.students.each is valid c.students have size > 0 }

    c.teacher actually delegates to the personValidator, which means a correct error message would be a com.wix.accord.GroupViolation aggregating the actual rule violations.

    T

    The object type this validator operates on. An implicit com.wix.accord.Validator over type T must be in scope.