Default

Use defaultValue(...) to write a fallback value when a field is missing.

Teki schema = Teki.fromRules(
    string("role").defaultValue("user"),
    number("retries").defaultValue(0)
);

schema.validate(request);

After validation, Teki writes the default value back to the validated object when needed.

defaultValue triggers on null and on blank strings. It does not replace numeric zero — 0 is treated as a valid value.

Available on

• string(...)
• number(...)

Annotation equivalent

import dev.ditsche.teki.annotation.Default;

public class SearchRequest {
    @Default("25")
    private Integer limit;
}

The annotation scanner converts defaults for common primitive and wrapper types, including int, long, double, float, and boolean.