Client Object Model with the Open XML SDK

The Microsoft SharePoint Foundation 2010 managed client object model enables you to write applications that are based on the Microsoft .NET Framework that access SharePoint content from clients without installing code on the server that runs SharePoint Foundation 2010. 

The Open XML SDK 2.0 for Microsoft Office enables you to write applications to create, change, and query Open XML documents, the default document format for the Microsoft 2007 Office system and Microsoft Office 2010. By using these two technologies together you can write client-side applications that work with Open XML documents that are stored in document libraries.

more @ Using the SharePoint Foundation 2010 Managed Client Object Model with the Open SDK

Client-side classes and server-side equivalents

Client	Server
ClientContext	SPContext
Site	SPSite
Web	SPWeb
List	SPList
ListItem	SPListItem
Field	SPField

Notice that the SharePoint Foundation 2010 managed client object model uses the same legacy naming pattern for site collections and sites as the server object model. 

The Site class represents site collections, and the Web class represents sites. 

My preference for using these classes is to name the variables so that the variable name indicates whether it is a site collection or a site, even though you must use the Site and Web classes to declare them.

The following example shows how name variables.

C#

ClientContext clientContext = new ClientContext(siteUrl);

Site siteCollection = clientContext.Site;

Web site = clientContext.Web;

Namespaces in the JavaScript Object Model

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Namespace                                                                         JavaScript File

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CUI Namespace                                                                CUI.js, SP.UI.Rte.js

CUI.Controls Namespace                                              CUI.js

CUI.Page Namespace                                                     CUI.js, SP.UI.Rte.js

SP Namespace                                                                  SP.Core.js, SP.js, SP.Ribbon.js, SP.Runtime.js

SP.ListOperation Namespace                                       SP.Core.js

SP.Ribbon Namespace                                                  SP.Ribbon.js

SP.Ribbon.PageState Namespace                              SP.Ribbon.js

SP.UI Namespace                                                            SP.Core.js, SP.js, SP.UI.Dialog.js

SP.Utilities Namespace                                                  SP.Core.js, SP.js, SP.Exp.js

SP.WebParts Namespace                                              SP.js

SP.Workflow Namespace                                              SP.js

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