API Versioning

The Sway Charts REST API attempts to maintain backward compatibility with the clients provided the following:

  • Clients ignore the data they do not understand

  • Clients only use the data they need

For example, in case of XML representation, clients must make sure they do not couple their logic with current XML representation in such a way that adding new fields causes their application to malfunction. This allows adding new data to resources without breaking clients.

If any data is removed or data meaning is changed, a new notification API version is introduced. Switch between different versions is based on the URI of the API (e.g. http://host/api/v1 for version 1 and http://host/api/v2 for version 2).

API versioning supports only major integer versions such as 1,2,3 etc. With the API, there is no notion of minor releases.

ChangeNew Version Released?

Addition of a new data field to data representation

Changing the logical meaning of a field

Removing a field

Changing the default representation, currency units etc.

Addition of new independent requests

New business rules and/or application flow

New default values for optional request parameters or fields

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