lz.Dataprovider is an abstract class that can be extended to create new kinds
of dataproviders, such as lz.HTTPDataProvider. These dataproviders
are the client's representation of a backend entity. There is no tag that
corresponds to this class.
Dataproviders represent queryable server-side data sources, capable of creating
or changing Datasets. Dataproviders are type-specific, i.e. http, jdbc or
soap.
Dataproviders manage connections to the server, and process requests which are submitted
via the doRequest method. The request is generated in an instance of lz.DataRequest.
A Dataprovider updates the lz.DataRequest with loading and status information via the onstatus event of the lz.DataRequest.
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