Function MaxLength

dsl/validation.go:395–412

MaxLength adds a "maxItems" validation to the attribute. See http://json-schema.org/latest/json-schema-validation.html#anchor42. Example: Attribute("array", ArrayOf(String), func() { MaxLength(200) // max array length Elem(func() { MaxLength(5) // max length of each array e

(val int)

//	    })
//	})
func MaxLength(val int) {
	if a, ok := eval.Current().(*expr.AttributeExpr); ok {
		if a.Type != nil {
			kind := a.Type.Kind()
			if kind != expr.BytesKind &&
				kind != expr.StringKind &&
				kind != expr.ArrayKind &&
				kind != expr.MapKind {
				incompatibleAttributeType("maximum length", a.Type.Name(), "a string or an array")
				return
			}
		}
		if a.Validation == nil {
			a.Validation = &expr.ValidationExpr{}
		}
		a.Validation.MaxLength = &val
	}
}

// Required adds a "required" validation to the attribute.
// See http://json-schema.org/latest/json-schema-validation.html#anchor61.