These hidden properties are used only in specific use cases.
The properties listed below are available for specific use cases. Normal driver use cases and functionality should not require these properties.
Specify multiple properties in a semicolon-separated list.
|CachePartial=True||Caches only a subset of columns, which you can specify in your query.|
|QueryPassthrough=True||Passes the specified query to the cache database instead of using the SQL parser of the driver.|
Integration and Formatting
|SupportAccessLinkedMode||In Access' linked mode, it is generally a good idea to always use a cache as most data sources do not support multiple Id queries. However if you want to use the driver in Access but not in linked mode, this property must be set to False to avoid using a cache of a SELECT * query for the given table.|
|DefaultColumnSize||Sets the default length of string fields when the data source does not provide column length in the metadata. The default value is 2000.|
|ConvertDateTimeToGMT||Determines whether to convert date-time values to GMT, instead of the local time of the machine.|
|RecordToFile=filename||Records the underlying socket data transfer to the specified file.|
|InitiateOAuth||Set this property to initiate the process to obtain or refresh the OAuth access token when you connect. The following options are available:
|OAuthSettingsLocation||The location of the settings file where OAuth values are saved when InitiateOAuth is set to true. When InitiateOAuth is enabled, the driver saves OAuth values to a settings file to avoid requiring the user to manually enter OAuth connection properties. When the user's OAuth session expires, the driver will automatically obtain a new access token if InitiateOAuth is set.
If InitiateOAuth is enabled but OAuthSettingsLocation is not defined, the driver uses a default settings file, %AppData%\CData\Trello Data Provider\OAuthSettings.txt on Windows. On macOS, this file is located in ~/Library/Application Support/CData/Trello Data Provider/OAuthSettings.txt. On Linux, ~/cdata/.config.
|OAuthAcccessToken||The OAuthAccessToken is retrieved from the OAuth server as part of the authentication process. It has a server-dependent timeout and can be reused between requests.
The access token is used in place of your user name and password. The access token protects your credentials by keeping them on the server.
|OAuthAccessTokenSecret||The OAuthAccessTokenSecret is retrieved from the OAuth server as part of the authentication process. It is used with the OAuthAccessToken and can be used for multiple requests until it times out.|
|OAuthRefreshToken||The OAuthRefreshToken property is used to refresh the OAuthAccessToken when using OAuth authentication.|