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    owiki 2016-08-19 15:00:37

    Initialization Properties Used

    The following lists the initialization properties currently used by the OpenLink Provider. Any properties not listed are not used by the OpenLink Provider.

    Table: 5.7.4.1.1. OLE-DB Initialization Properties

    Property Description
    DBPROP_AUTH_PASSWORD Passed as the value of the PWD keyword in SQLDriverConnect.
    DBPROP_AUTH_USERID Passed as the value of the UID keyword in SQLDriverConnect.
    DBPROP_INIT_CATALOG Sets the initial catalog for data sources which recognise catalogs.
    DBPROP_INIT_DATASOURCE Passed as the value of the DSN keyword in SQLDriverConnect.
    DBPROP_INIT_HWND Passed as the value of the hwnd argument in SQLDriverConnect.
    DBPROP_INIT_MODE Mapped to the ODBC connect option SQL_ACCESS_MODE.
    DBPROP_INIT_PROMPT Passed as the value of the fDriverCompletion parameter in SQLDriverConnect.
    DBPROP_INIT_PROVIDERSTRING Specifies extended properties for controlling ODBC Cursor Library usage (through the 'Cursors' keyword) and the whether bookmarks are exposed by default on rowsets (through the 'BookmarkDefault' keyword).
    DBPROP_INIT_TIMEOUT Mapped to the ODBC connect option SQL_LOGIN_TIMEOUT.

    Setting and Getting Provider Properties

    The data source object is the first object created when a consumer instantiates the provider by calling CoCreateInstance.

    The data source object provides the starting point for communications between the provider and consumer. For example, a consumer can call CoCreateInstance and request an IDBInitialize interface pointer to instantiate a data source object. The provider has a CLSID (class ID) that is stored in the Windows Registry. The consumer can use this CLSID with CoCreateInstance to instantiate the data source object. The OpenLink provider setup program registers the OpenLink provider in the Windows Registry.

    The data source object is responsible for setting and returning information about the properties supported by the provider and exposing the list of supported keywords and literals. This functionality is supported through the mandatory IDBProperties interface and the optional IDBInfo interface. The IDBProperties interface contains three methods:

    • GetProperties returns the list of properties currently set on the data source object.
    • GetPropertyInfo returns information about supported rowset and data source properties.
    • SetProperties sets the properties on the data source object.

    The IDBInfo interface contains two methods:

    • GetKeywords returns a list of supported keywords.
    • GetLiteralInfo returns information about literals used in text commands.
    Referenced by...