IFilter Administration Interfaces

The IFilter registration interfaces support registering and loading IFilters for use with Microsoft SharePoint Portal Server Search (SharePointPSSearch).

Note  SharePointPSSearch does not require the registration functions available in the IFilterRegistration2 interface. You can call either the IFilterRegistration interface or the IFilterRegistration2 interface, depending on the functionality required by your Microsoft SharePoint Portal Server 2003 setup. The additional IFilter registration settings are recommended to enhance mapping of the IFilters to the SharePointPSSearch content sources and content types.

The following table describes the SharePointPSSearch IFilter registration interfaces.

Interface	Description
IFilterRegistration	Registers the IFilters that need only the SharePointPSSearch IFilter registration functions.
IFilterRegistration2	Registers the IFilters that need to be mapped to SharePoint Portal Server COM class IDs, MIME content types, and file name extensions. This interface inherits the methods of the IFilterRegistration interface.
ILoadFilter	Registers the IFilters that need to be mapped to SharePoint Portal Server COM class IDs, MIME content types, and file name extensions. The methods of this interface implement some of the same functionality as methods of the IFilterRegistration interface.