Not Blank

Use notBlank() on string fields to reject values that are null or consist entirely of whitespace. This is stricter than required(), which accepts a string of spaces.

Teki schema = Teki.fromRules(
    string("name").notBlank()
);

" " fails. "" fails. null fails. "Alice" passes.

Available on

• string(...)

Annotation equivalent

import dev.ditsche.teki.annotation.NotBlank;

public class ProfileRequest {
    @NotBlank
    private String displayName;
}