Microsoft.SharePoint.Dsp (Espacio de nombres)

Provides the base class for the data retrieval service adapters used in Microsoft Windows SharePoint Services.

The adapters define a protocol for data consumers to query heterogeneous data sources and for the data sources to return query results back to the consumers, integrating different types of data into a unified format so that they can be related, analyzed, and manipulated easily.

Each data retrieval service provides a data-binding scheme that enables data consumers and data servers to communicate with each other through SOAP or the object model of Windows SharePoint Services. The client side of the data retrieval services consists of data consumers such as applications, data-driven Web Parts, or data-bound server controls. The server side of the data retrieval services is a group of adapters, which are Web services that return XML data from different data sources or that perform data-manipulation operations in those data sources. The following adapters are used in Windows SharePoint Services:

• Microsoft.SharePoint.Dsp.OleDb

• Microsoft.SharePoint.Dsp.SoapPT

• Microsoft.SharePoint.Dsp.Sts

• Microsoft.SharePoint.Dsp.XmlUrl

The Microsoft.SharePoint.Dsp.Sts namespace has both an object model and a SOAP interface, while the other three namespaces have only an object model.

The adapters provide an object model that can be used by other Microsoft .NET Framework managed assemblies. Server components can load the assembly of a service directly, eliminating the overhead of calling the service through SOAP. All adapters implement the IDspAdapter interface of the Microsoft.SharePoint.Dsp namespace, and by dynamically loading the data retrieval service assemblies, the same client code can be written to talk to any of the adapters.

Clases

	Clase	Descripción
	AllFields	Used in a query to specify that all the fields be returned from the data source.
	Authentication	The Authentication class represents the authentication mode that is used to connect to the back-end server.
	Connection	Represents a connection to a data retrieval service adapter.
	DataRoot	Represents the root of the content document for a particular adapter instance.
	DspAdapter	Implements the IDspAdapter interface for use by the OleDbAdapter class in performing queries against OLE DB data sources.
	DspQuery	Defines the filter used in a query against a data source provider.
	DSQuery	Represents a query used by a data retrieval service.
	Field	Represents a single column in a query.
	Fields	Represents the collection of columns that are included in a query.
	OrderField	Represents the column by which the result is ordered.
	PTQuery	Represents a pass-through query.
	QueryRequest	Represents the request in a query.
	QueryResponse	Represents the response in a query.
	Request	Represents the request header in a query, containing information about the operation type and the document type of the query.
	RequestHeader	Represents the request header in a query.
	Response	Represents the response in a query.
	ServerParameter	Represents a server parameter required by the server containing the data source.
	ServerParameterInfo	Represents information about the parameters used by the server containing the data source.
	Versions	Represents the versions of the data retrieval service that are supported by an adapter or the versions being used in a query.

Interfaces

	Interfaz	Descripción
	IDspAdapter	Provides a COM interface for clients to access a data retrieval service adapter locally.

Enumeraciones

	Enumeración	Descripción
	ColumnMappingType	Indicates the type of XML format used for data returned in a query.
	DocumentType	Specifies the document type for a request.
	MethodType	Specifies the action of the request.
	OrderDirection	The OrderDirection enumeration specifies the direction in which a field or column is sorted.
	PagingSupportType	Indicates the type of paging that is supported for a query.
	QueryType	Specifies a type of query that is used in a request.
	ResponseStatus	Specifies the status of a query response.
	ResultContentType	Indicates the type of content that is returned through a query.