WSSDAL (WSS Data Access Layer) – a SharePoint Web Services alternative
在开发SharePoint应用程序或Web Parts过程中，一般会调用WSS OM或WSS Web Services。
1. WSS OM
Using the WSS OM is a breeze. The object hierarchy makes sense, methods are just where one would expect them to be and the error messages actually mean something. There is only one critical shortcoming – the OM is accessible only from the Sharepoint server itself. For this reason, the OM is not an option in systems which are distributed across multiple servers. In these cases, developers are forced to turn to the WSS Web Services.
2. WSS Web Services
Using the WSS Web Services is not a fun experience. Much of the interface is based on CAML (Collaborative Application Markup Language), the documentation is superficial and debugging is often quite painful.
Addy Santo在这里提供了另外一种选择：
3. WSSDAL (WSS Data Access Layer)
The idea behind WssDal is to provide a simple OM-type experience which can be used from multiple environments such as .Net applications or Biztalk Orchestrations. All of the data structures exposed by WssDal are serializable for easy consumption by any web service client, and the WssDal library also provides ready-made client proxy classes with added functionality relative to the standard .Net proxy classes.
References:
1. WssDal - a Sharepoint Web Services alternative , http://weblogs.asp.net/ASanto/archive/2005/03/02/383939.aspx
2. WssDal Source Code and Documentation, http://www.addysanto.com/blog/wssdal_v01.zip