Struct RdfFusionLogicalPlanBuilderContext 

pub struct RdfFusionLogicalPlanBuilderContext { /* private fields */ }

The context that allows creating a RdfFusionLogicalPlanBuilder.

Implementations

impl RdfFusionLogicalPlanBuilderContext

pub fn new( rdf_fusion_context: RdfFusionContextView, ) -> RdfFusionLogicalPlanBuilderContext

Creates a new RdfFusionLogicalPlanBuilder.

pub fn registry(&self) -> &Arc<dyn RdfFusionFunctionRegistry>

Returns a reference to the RdfFusionFunctionRegistry of the builder.

pub fn encodings(&self) -> &RdfFusionEncodings

Returns the RdfFusionEncodings of the builder.

pub fn storage_encoding(&self) -> &QuadStorageEncoding

Returns the QuadStorageEncoding of the builder.

pub fn expr_builder_context_with_schema<'a>( &'a self, schema: &'a DFSchema, ) -> RdfFusionExprBuilderContext<'a>

Returns a new RdfFusionExprBuilderContext.

pub fn create(&self, plan: Arc<LogicalPlan>) -> RdfFusionLogicalPlanBuilder

Creates a new RdfFusionLogicalPlanBuilder with the given plan.

pub fn create_matching_quads( &self, active_graph: ActiveGraph, subject: Option<NamedOrBlankNode>, predicate: Option<NamedNode>, object: Option<Term>, ) -> RdfFusionLogicalPlanBuilder

Creates a new RdfFusionLogicalPlanBuilder that matches Quads.

The active_graph dictates which graphs should be considered, while the optional constants (subject, predicate, object) allow filtering the resulting solution sequence.

This does not allow you to bind values to variables. See Self::create_pattern for this purpose.

pub fn create_empty_solution(&self) -> RdfFusionLogicalPlanBuilder

Creates a new RdfFusionLogicalPlanBuilder that that returns a single empty solution.

pub fn create_values( &self, variables: &[Variable], bindings: &[Vec<Option<GroundTerm>>], ) -> Result<RdfFusionLogicalPlanBuilder, DataFusionError>

Creates a new RdfFusionLogicalPlanBuilder that holds the given VALUES as RDF terms.

The PlainTermEncoding is used for encoding the terms.

pub fn create_bgp( &self, active_graph: &ActiveGraph, graph_variables: Option<&Variable>, patterns: &[TriplePattern], ) -> Result<RdfFusionLogicalPlanBuilder, DataFusionError>

Creates a new RdfFusionLogicalPlanBuilder that matches the given basic graph pattern and returns all solutions.

Relevant Specifications

• SPARQL 1.1 - Basic Graph Patterns

pub fn create_pattern( &self, active_graph: ActiveGraph, graph_variable: Option<Variable>, pattern: TriplePattern, ) -> RdfFusionLogicalPlanBuilder

Creates a new RdfFusionLogicalPlanBuilder that matches a single pattern on the active_graph.

Active Graph

The active_graph is interpreted from the viewpoint of the quad store, not the query. This API does not have knowledge about RDF data sets and it is up to the user to correctly construct an ActiveGraph instance from the data set.

See ActiveGraph for more detailed information.

pub fn create_property_path( &self, active_graph: ActiveGraph, graph_variable: Option<Variable>, path: PropertyPathExpression, subject: TermPattern, object: TermPattern, ) -> RdfFusionLogicalPlanBuilder

Creates a new RdfFusionLogicalPlanBuilder from a SPARQL PropertyPathExpression.

Relevant Resources

• SPARQL 1.1 - Property Paths

Trait Implementations

impl Clone for RdfFusionLogicalPlanBuilderContext

fn clone(&self) -> RdfFusionLogicalPlanBuilderContext

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for RdfFusionLogicalPlanBuilderContext

fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>

Formats the value using the given formatter.