| OAuth1Adapter | Adds OAuth 1.0a capabilities to the pojo |
| OAuth2Adapter | |
| OAuthAdapter | Base OAuth adapter |
| RestoreAccessTokenCallback | Callback interface for resting access tokens |
| SaveAccessTokenCallback | Callback interface for saving OAuth access tokens |
| NotAuthorizedException | Exception thrown when a message processor requires for the connector to be authorized using OAuth and its not. |
| UnableToAcquireAccessTokenException | Exception thrown when the access token needed for accessing a protected resource cannot be acquired |
| UnableToAcquireRequestTokenException | Exception thrown when the request token needed for building the authorization URL cannot be acquired |