RequiredConstraint

public final class RequiredConstraint extends FieldConstraint<V>

A constraint that, when applied to a field, checks whether the field is set to a non-default value.

Functions

Link copied to clipboard
public void accept(ConstraintTranslator<? extends Object> visitor)
Accepts the given ConstraintTranslator.
Link copied to clipboard
public String errorMessage(FieldContext field)
Produces an error message for the given field validation context.

Inherited functions

Link copied to clipboard
public final FieldDeclaration field()
Link copied to clipboard
public final V optionValue()
Returns a value that describes the constraint.
Link copied to clipboard
public MessageType targetType()
The associated message type.