asami.durable.resolver — org.clojars.quoll/asami 2.2.1

Handles resolving patterns on a graph

*stream-from clj/s

(*stream-from selector knowns initial-node)

count-from-index clj/s multimethod

This optimizes counting by traversing index nodes, and not iterating over tuples blocks.

get-from-index clj/s multimethod

Lookup an index in the graph for the requested data. Returns a sequence of unlabelled bindings. Each binding is a vector of binding values.

get-single-from-index clj/s

(get-single-from-index idx data-pool tag st p srch)

get-transitive-from-index clj/s multimethod

Lookup an index in the graph for the requested data, and returns all data where the required predicate is a transitive relationship. Unspecified predicates extend across the graph. Returns a sequence of unlabelled bindings. Each binding is a vector of binding values.

ordered-collect clj/s

(ordered-collect pairs)

Converts a sequence of key/value pairs that are grouped by key, and returns a map of keys to sets of values. The grouping of keys allows the avoidance of map lookups.

project-after-first clj/s

transitive-from clj/s

(transitive-from idx pool tag x tproject ypos rproject)

Steps out from a provided node either forwards or backwards, to the next nodes in the required direction. idx: The index to use for lookups in the required direction pool: The datapool to turn local nodes (numbers) into global nodes (values) tag: Indicates is the transitive operation is * or + x: The starting node. A subject when going downstream, or an object when going upstream. tproject: A function for projecting tuples of predicates and the next node from x. ypos: The position in the index of the next nodes in the required direction. subjects when starting at an object, and objects when starting at a subject. rproject: A function for projecting the final result as a vector in the expected order for the operation.

v12 clj/s

v2 clj/s

v21 clj/s

zero-step clj/s

(zero-step tag pool zero result)

Prepend a zero step value if the tag requests it