Class LeviathanUpdateProcessor

Default SPARQL Update Processor provided by the library's Leviathan SPARQL Engine.

Inheritance

System.Object

LeviathanUpdateProcessor

ExplainUpdateProcessor

Implements

ISparqlUpdateProcessor

Inherited Members

System.Object.Equals(System.Object)

System.Object.Equals(System.Object, System.Object)

System.Object.GetHashCode()

System.Object.GetType()

System.Object.MemberwiseClone()

System.Object.ReferenceEquals(System.Object, System.Object)

System.Object.ToString()

Namespace: VDS.RDF.Update

Assembly: dotNetRDF.dll

Syntax

public class LeviathanUpdateProcessor : ISparqlUpdateProcessor

Remarks

The Leviathan Update Processor simply invokes the Evaluate(SparqlUpdateEvaluationContext) method of the SPARQL Commands it is asked to process. Derived implementations may override the relevant virtual protected methods to substitute their own evaluation of an update for our default standards compliant implementations.

Constructors

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LeviathanUpdateProcessor(IInMemoryQueryableStore)

Creates a new Leviathan Update Processor.

Declaration

public LeviathanUpdateProcessor(IInMemoryQueryableStore store)

Parameters

Type	Name	Description
IInMemoryQueryableStore	store	Triple Store.

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LeviathanUpdateProcessor(ISparqlDataset)

Creates a new Leviathan Update Processor.

Declaration

public LeviathanUpdateProcessor(ISparqlDataset data)

Parameters

Type	Name	Description
ISparqlDataset	data	SPARQL Dataset.

Fields

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_dataset

Dataset over which updates are applied.

Declaration

protected ISparqlDataset _dataset

Field Value

Type	Description
ISparqlDataset

Properties

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AutoCommit

Gets/Sets whether Updates are automatically committed.

Declaration

public bool AutoCommit { get; set; }

Property Value

Type	Description
System.Boolean

Methods

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Discard()

Discards and outstanding changes from the underlying dataset.

Declaration

public void Discard()

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Flush()

Flushes any outstanding changes to the underlying dataset.

Declaration

public void Flush()

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GetContext()

Creates a new Evaluation Context.

Declaration

protected SparqlUpdateEvaluationContext GetContext()

Returns

Type	Description
SparqlUpdateEvaluationContext

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GetContext(SparqlUpdateCommandSet)

Creates a new Evaluation Context.

Declaration

protected SparqlUpdateEvaluationContext GetContext(SparqlUpdateCommandSet cmds)

Parameters

Type	Name	Description
SparqlUpdateCommandSet	cmds	Update Commands.

Returns

Type	Description
SparqlUpdateEvaluationContext

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GetQueryProcessor()

Gets the Query Processor to be used.

Declaration

protected virtual ISparqlQueryAlgebraProcessor<BaseMultiset, SparqlEvaluationContext> GetQueryProcessor()

Returns

Type	Description
ISparqlQueryAlgebraProcessor<BaseMultiset, SparqlEvaluationContext>

Remarks

By default null is returned which indicates that the default query processing behaviour is used, to use a specific processor extend this class and override this method. If you do so you will have access to the dataset in use so generally you will want to use a query processor that accepts a ISparqlDataset instance.

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ProcessAddCommand(AddCommand)

Processes an ADD command.

Declaration

public void ProcessAddCommand(AddCommand cmd)

Parameters

Type	Name	Description
AddCommand	cmd	Add Command.

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ProcessAddCommandInternal(AddCommand, SparqlUpdateEvaluationContext)

Processes an ADD command.

Declaration

protected virtual void ProcessAddCommandInternal(AddCommand cmd, SparqlUpdateEvaluationContext context)

Parameters

Type	Name	Description
AddCommand	cmd	Add Command.
SparqlUpdateEvaluationContext	context	SPARQL Update Evaluation Context.

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ProcessClearCommand(ClearCommand)

Processes a CLEAR command.

Declaration

public void ProcessClearCommand(ClearCommand cmd)

Parameters

Type	Name	Description
ClearCommand	cmd	Clear Command.

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ProcessClearCommandInternal(ClearCommand, SparqlUpdateEvaluationContext)

Processes a CLEAR command.

Declaration

protected virtual void ProcessClearCommandInternal(ClearCommand cmd, SparqlUpdateEvaluationContext context)

Parameters

Type	Name	Description
ClearCommand	cmd	Clear Command.
SparqlUpdateEvaluationContext	context	SPARQL Update Evaluation Context.

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ProcessCommand(SparqlUpdateCommand)

Processes a command.

Declaration

public void ProcessCommand(SparqlUpdateCommand cmd)

Parameters

Type	Name	Description
SparqlUpdateCommand	cmd	Command.

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ProcessCommandSet(SparqlUpdateCommandSet)

Processes a command set.

Declaration

public void ProcessCommandSet(SparqlUpdateCommandSet commands)

Parameters

Type	Name	Description
SparqlUpdateCommandSet	commands	Command Set.

Remarks

Invokes ProcessCommand(SparqlUpdateCommand) on each command in turn.

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ProcessCopyCommand(CopyCommand)

Processes a COPY command.

Declaration

public void ProcessCopyCommand(CopyCommand cmd)

Parameters

Type	Name	Description
CopyCommand	cmd	Copy Command.

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ProcessCopyCommandInternal(CopyCommand, SparqlUpdateEvaluationContext)

Processes a COPY command.

Declaration

protected virtual void ProcessCopyCommandInternal(CopyCommand cmd, SparqlUpdateEvaluationContext context)

Parameters

Type	Name	Description
CopyCommand	cmd	Copy Command.
SparqlUpdateEvaluationContext	context	SPARQL Update Evaluation Context.

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ProcessCreateCommand(CreateCommand)

Processes a CREATE command.

Declaration

public void ProcessCreateCommand(CreateCommand cmd)

Parameters

Type	Name	Description
CreateCommand	cmd	Create Command.

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ProcessCreateCommandInternal(CreateCommand, SparqlUpdateEvaluationContext)

Processes a CREATE command.

Declaration

protected virtual void ProcessCreateCommandInternal(CreateCommand cmd, SparqlUpdateEvaluationContext context)

Parameters

Type	Name	Description
CreateCommand	cmd	Create Command.
SparqlUpdateEvaluationContext	context	SPARQL Update Evaluation Context.

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ProcessDeleteCommand(DeleteCommand)

Processes a DELETE command.

Declaration

public void ProcessDeleteCommand(DeleteCommand cmd)

Parameters

Type	Name	Description
DeleteCommand	cmd	Delete Command.

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ProcessDeleteCommandInternal(DeleteCommand, SparqlUpdateEvaluationContext)

Processes a DELETE command.

Declaration

protected virtual void ProcessDeleteCommandInternal(DeleteCommand cmd, SparqlUpdateEvaluationContext context)

Parameters

Type	Name	Description
DeleteCommand	cmd	Delete Command.
SparqlUpdateEvaluationContext	context	SPARQL Update Evaluation Context.

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ProcessDeleteDataCommand(DeleteDataCommand)

Processes a DELETE DATA command.

Declaration

public void ProcessDeleteDataCommand(DeleteDataCommand cmd)

Parameters

Type	Name	Description
DeleteDataCommand	cmd	DELETE Data Command.

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ProcessDeleteDataCommandInternal(DeleteDataCommand, SparqlUpdateEvaluationContext)

Processes a DELETE DATA command.

Declaration

protected virtual void ProcessDeleteDataCommandInternal(DeleteDataCommand cmd, SparqlUpdateEvaluationContext context)

Parameters

Type	Name	Description
DeleteDataCommand	cmd	Delete Data Command.
SparqlUpdateEvaluationContext	context	SPARQL Update Evaluation Context.

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ProcessDropCommand(DropCommand)

Processes a DROP command.

Declaration

public void ProcessDropCommand(DropCommand cmd)

Parameters

Type	Name	Description
DropCommand	cmd	Drop Command.

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ProcessDropCommandInternal(DropCommand, SparqlUpdateEvaluationContext)

Processes a DROP command.

Declaration

protected virtual void ProcessDropCommandInternal(DropCommand cmd, SparqlUpdateEvaluationContext context)

Parameters

Type	Name	Description
DropCommand	cmd	Drop Command.
SparqlUpdateEvaluationContext	context	SPARQL Update Evaluation Context.

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ProcessInsertCommand(InsertCommand)

Processes an INSERT command.

Declaration

public void ProcessInsertCommand(InsertCommand cmd)

Parameters

Type	Name	Description
InsertCommand	cmd	Insert Command.

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ProcessInsertCommandInternal(InsertCommand, SparqlUpdateEvaluationContext)

Processes an INSERT command.

Declaration

protected virtual void ProcessInsertCommandInternal(InsertCommand cmd, SparqlUpdateEvaluationContext context)

Parameters

Type	Name	Description
InsertCommand	cmd	Insert Command.
SparqlUpdateEvaluationContext	context	SPARQL Update Evaluation Context.

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ProcessInsertDataCommand(InsertDataCommand)

Processes an INSERT DATA command.

Declaration

public void ProcessInsertDataCommand(InsertDataCommand cmd)

Parameters

Type	Name	Description
InsertDataCommand	cmd	Insert Data Command.

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ProcessInsertDataCommandInternal(InsertDataCommand, SparqlUpdateEvaluationContext)

Processes an INSERT DATA command.

Declaration

protected virtual void ProcessInsertDataCommandInternal(InsertDataCommand cmd, SparqlUpdateEvaluationContext context)

Parameters

Type	Name	Description
InsertDataCommand	cmd	Insert Data Command.
SparqlUpdateEvaluationContext	context	SPARQL Update Evaluation Context.

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ProcessLoadCommand(LoadCommand)

Processes a LOAD command.

Declaration

public void ProcessLoadCommand(LoadCommand cmd)

Parameters

Type	Name	Description
LoadCommand	cmd	Load Command.

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ProcessLoadCommandInternal(LoadCommand, SparqlUpdateEvaluationContext)

Processes a LOAD command.

Declaration

protected virtual void ProcessLoadCommandInternal(LoadCommand cmd, SparqlUpdateEvaluationContext context)

Parameters

Type	Name	Description
LoadCommand	cmd	Load Command.
SparqlUpdateEvaluationContext	context	SPARQL Update Evaluation Context.

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ProcessModifyCommand(ModifyCommand)

Processes an INSERT/DELETE command.

Declaration

public void ProcessModifyCommand(ModifyCommand cmd)

Parameters

Type	Name	Description
ModifyCommand	cmd	Insert/Delete Command.

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ProcessModifyCommandInternal(ModifyCommand, SparqlUpdateEvaluationContext)

Processes an INSERT/DELETE command.

Declaration

protected virtual void ProcessModifyCommandInternal(ModifyCommand cmd, SparqlUpdateEvaluationContext context)

Parameters

Type	Name	Description
ModifyCommand	cmd	Insert/Delete Command.
SparqlUpdateEvaluationContext	context	SPARQL Update Evaluation Context.

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ProcessMoveCommand(MoveCommand)

Processes a MOVE command.

Declaration

public void ProcessMoveCommand(MoveCommand cmd)

Parameters

Type	Name	Description
MoveCommand	cmd	Move Command.

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ProcessMoveCommandInternal(MoveCommand, SparqlUpdateEvaluationContext)

Processes a MOVE command.

Declaration

protected virtual void ProcessMoveCommandInternal(MoveCommand cmd, SparqlUpdateEvaluationContext context)

Parameters

Type	Name	Description
MoveCommand	cmd	Move Command.
SparqlUpdateEvaluationContext	context	SPARQL Update Evaluation Context.

Implements

ISparqlUpdateProcessor

Extension Methods

Extensions.AsEnumerable<T>(T)