MDAC 2.5 SDK - OLE DB Programmer's Reference
OLE DB Interfaces

IRegisterProvider::SetURLMapping

Registers the ability of a provider binder object to process a particular URL scheme or scheme and prefix.

HRESULT SetURLMapping(
   LPCOLESTR  pwszURL,
   DWORD      dwReserved,
   REFCLSID   rclsidProvider
);

Parameters

pwszURL

[in]
The canonical URL scheme or scheme and prefix to be mapped.

dwReserved

[in]
Reserved for future use; providers should set this to zero.

rclsidProvider

[in]
A reference to the CLSID of the provider binder object, which is to be mapped to this URL scheme or scheme and prefix.

Return Code

S_OK

The method succeeded.

DB_E_RESOURCEEXISTS

The URL scheme or scheme and prefix combination was already mapped to a different provider binder object.

DB_SEC_E_PERMISSIONDENIED

The caller did not have permission to register this URL mapping.

E_FAIL

A provider-specific error occurred.

E_INVALIDARG

pwszURL was a null pointer or pointed to an invalid URL.

dwReserved was not 0.

Comments

Each URL scheme or scheme and prefix combination may be mapped to at most a single OLE DB provider. A URL scheme and prefix may be mapped to the same provider multiple times; however, the root binder should return S_OK on each call.

Note   "Provider Binder Objects" in Chapter 8, discusses case-sensitivity issues for URL-to-provider mapping.

IRegisterProvider::SetURLMapping uses InternetCrackUrl to validate URLs for mapping. In addition to the URLs accepted by InternetCrackUrl, IRegisterProvider::SetURLMapping accepts scheme-only URLs such as "http", "http:", "myscheme" and "myscheme:".

For more information about InternetCrackUrl, see the MSDN Library documentation.