func (filter *JSON) getValue(key string, values shared.MarshalMap) (string, bool) {
if value, found := values.Path(key); found {
switch value.(type) {
case string:
return value.(string), true
case bool:
return strconv.FormatBool(value.(bool)), true
case float64:
return strconv.FormatFloat(value.(float64), 'f', -1, 64), true
}
}
return "", false
}
