13.3 Graph Patterns & Query

Query Module – Graph Patterns & Query

struct
(struct graph-pattern (patterns))
patterns : (set/c statement-pattern?)

TBD

procedure
(make-common-subject-pattern patterns) → graph-pattern?
patterns : (set/c (list/c component-pattern? component-pattern?))

TBD

predicate
(result-cell? val) → boolean?
val : any/c

TBD

predicate
(result-row? val) → boolean?
val : any/c

TBD

predicate
(results? val) → boolean?
val : any/c

Returns #t if val is a stream of result-row? values.

procedure
(graph-pattern-query pattern graph) → results?
pattern : graph-pattern?
graph : graph?

Apply the graph pattern to the statements in the graph, returning a stream of result-row? values.