Class GraphStageBuilder

A GraphStageBuilder evaluates GRAPH clauses in a SPARQL query.

author: Thomas Minier

Hierarchy

StageBuilder
- GraphStageBuilder

Index

Constructors

constructor

Properties

Accessors

Methods

Constructors

constructor

new GraphStageBuilder(_dataset: Dataset): GraphStageBuilder

Inherited from StageBuilder.constructor
- Defined in src/engine/stages/stage-builder.ts:39
Parameters
- _dataset: Dataset
Returns GraphStageBuilder

Properties

Protected _builder

_builder: PlanBuilder | null = null

Protected _dataset

_dataset: Dataset

Accessors

builder

get builder(): PlanBuilder | null
set builder(builder: PlanBuilder | null): void

Inherited from StageBuilder.builder
- Defined in src/engine/stages/stage-builder.ts:43
Returns PlanBuilder | null
Inherited from StageBuilder.builder
- Defined in src/engine/stages/stage-builder.ts:47
Parameters
- builder: PlanBuilder | null
Returns void

dataset

get dataset(): Dataset
set dataset(dataset: Dataset): void

Inherited from StageBuilder.dataset
- Defined in src/engine/stages/stage-builder.ts:51
Returns Dataset
Inherited from StageBuilder.dataset
- Defined in src/engine/stages/stage-builder.ts:55
Parameters
- dataset: Dataset
Returns void

Methods

_buildIterator

_buildIterator(source: PipelineStage<Bindings>, iri: string, subquery: RootNode, context: ExecutionContext): PipelineStage<Bindings>

- Defined in src/engine/stages/graph-stage-builder.ts:101
Returns a PipelineStage used to evaluate a GRAPH clause

Parameters
- source: PipelineStage<Bindings>
  
  Input PipelineStage
- iri: string
  
  IRI of the GRAPH clause
- subquery: RootNode
  
  Subquery to be evaluated
- context: ExecutionContext
Returns PipelineStage<Bindings>

A PipelineStage used to evaluate a GRAPH clause

execute

execute(source: PipelineStage<Bindings>, node: GraphNode, context: ExecutionContext): PipelineStage<Bindings>

Overrides StageBuilder.execute
- Defined in src/engine/stages/graph-stage-builder.ts:48
Build a PipelineStage to evaluate a GRAPH clause

Parameters
- source: PipelineStage<Bindings>
  
  Input PipelineStage
- node: GraphNode
  
  Graph clause
- context: ExecutionContext
Returns PipelineStage<Bindings>

A PipelineStage used to evaluate a GRAPH clause

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