How to find out Toll Charge has changed, from which date?

[nirengp]

Hi,

We use route service to calculate route distance and toll charges. And for efficiency we cache the details. Now, when the Toll charge changes, the cached data becomes obsolete. However, is their any mechanism available in PTV xServer API to find out if the Toll charge has changed. We know their is a way to get route calculation based on date using START_TIME parameter or CountryInfoOptions.tollDate. However, that will not allow us to cache the calculated route data efficiently.

[Joost]

If you use CountryInfoOptions.tollDate, the result will also include ExtendedRoute.CountryInfo[].scenarioId . You can use this to check if a newer scenarios is used. Keep in mind that scenarioId's are unique for a specific map release. Meaning that if you deploy a newer map you should flush your cache.

[Bernd Welter]

And for your information: the relevant scenario meta data is available in the TollScenarios.INI in your map folder.
You might use this info to check (manually) what validity periods are given:

TOLLSCENARIOID;COUNTRYID;LANGUAGECODE;NAME;DESCRIPTION1;DESCRIPTION2;VALIDFROM;CREATEDAT;RELEVANCE;LASTMODIFICATION;MANDATORYTOLLNAME

Sample of the TollScenarios in my environment.
Reduced to ENG descriptions. Shows 4 scenarios for Germany (49). Some are marked as FORECASTS.

Best regards,
Bernd