@thi.ng/rstream-query/pattern.d.ts

@thi.ng/rstream based triple store & reactive query engine

import type { PathPattern, Pattern } from "./api.js";
export declare const patternVarCount: (p: Pattern) => number;
export declare const patternVars: ([s, p, o]: Pattern) => string[];
/**
 * Takes a path triple pattern and max depth. The pattern's predicate must be a
 * seq of preds. Returns a 2-elem vector `[patterns,vars]`, where `patterns` is
 * a list of generated sub-query patterns with injected temp qvars for in
 * between patterns and `vars` are the temp qvars themselves.
 *
 * Example:
 *
 * ```text
 * ["?s", [p1, p2, p3], "?o"] =>
 * [
 *   [["?s", p1, "?__q0"], ["?__q0", p2, "?__q1"], ["?__q1", p3, "?o"] ],
 *   ["?__q0", "?__q1"]
 * ]
 * ```
 *
 * @param pattern -
 * @param maxLen -
 */
export declare const resolvePathPattern: ([s, p, o]: PathPattern, maxLen?: number) => [Pattern[], string[]];
export declare const sortPatterns: (patterns: Pattern[]) => Pattern[];
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