GenericUpdateProcessor Class

SPARQL Update Processor which processes commands against a generic underlying store represented by an IStorageProvider implementation.

Inheritance Hierarchy

SystemObject
VDS.RDF.UpdateGenericUpdateProcessor

Namespace: VDS.RDF.Update
Assembly: dotNetRDF (in dotNetRDF.dll) Version:

Syntax

Copy

public class GenericUpdateProcessor : ISparqlUpdateProcessor

Public Class GenericUpdateProcessor
	Implements ISparqlUpdateProcessor

The GenericUpdateProcessor type exposes the following members.

Constructors

	Name	Description
	GenericUpdateProcessor	Creates a new Generic Update Processor.

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Methods

	Name	Description
	Discard	Discards any outstanding changes.
	Equals	Determines whether the specified object is equal to the current object. (Inherited from Object.)
	Finalize	Allows an object to try to free resources and perform other cleanup operations before it is reclaimed by garbage collection. (Inherited from Object.)
	Flush	Flushes any outstanding changes to the underlying store.
	GetHashCode	Serves as the default hash function. (Inherited from Object.)
	GetType	Gets the Type of the current instance. (Inherited from Object.)
	MemberwiseClone	Creates a shallow copy of the current Object. (Inherited from Object.)
	ProcessAddCommand	Processes an ADD command.
	ProcessClearCommand	Processes a CLEAR command.
	ProcessCommand	Processes a command.
	ProcessCommandSet	Processes a command set.
	ProcessCopyCommand	Processes a COPY command.
	ProcessCreateCommand	Processes a CREATE command.
	ProcessDeleteCommand	Processes a DELETE command.
	ProcessDeleteDataCommand	Processes a DELETE DATA command.
	ProcessDropCommand	Processes a DROP command.
	ProcessInsertCommand	Processes an INSERT command.
	ProcessInsertDataCommand	Processes an INSERT DATA command.
	ProcessLoadCommand	Processes a LOAD command.
	ProcessModifyCommand	Processes an INSERT/DELETE command.
	ProcessMoveCommand	Processes a MOVE command.
	ToString	Returns a string that represents the current object. (Inherited from Object.)

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Remarks

If the provided manager also implements the IUpdateableStorage interface then the managers native SPARQL Update implementation will be used for the non-type specific calls i.e. ProcessCommand() and ProcessCommandSet(). At all other times the SPARQL Update commands will be processed by approximating their behaviour through calls to SaveGraph(), LoadGraph() and UpdateGraph() in addition to local in-memory manipulation of the data. Some commands such as INSERT and DELETE can only be processed when the manager is also a IQueryableStorage since they rely on making a query and performing actions based on the results of that query.

The performance of this processor is somewhat dependent on the underlying IStorageProvider. If the underlying manager supports triple level updates as indicated by the UpdateSupported property then operations can be performed quite efficiently, if this is not the case then any operation which modifies a Graph will need to load the existing Graph from the store, make the modifications locally in-memory and then save the resulting Graph back to the Store.

Reference

VDS.RDF.Update Namespace