api.ts

import type { Fn, IObjectOf } from "@thi.ng/api";
import type { ISubscription } from "@thi.ng/rstream";

export type Pattern = [any, any, any];

export type PathPattern = [any, any[], any];

export type Triple = Pattern;

export type Triples = Set<Pattern>;

export type TripleIds = Set<number>;

export type Solution = IObjectOf<any>;

export type Solutions = Set<Solution>;

export type QuerySolution = ISubscription<any, Solutions>;

export type BindFn = Fn<Solution, any>;

export interface Edit {
	index: Set<number>;
	key: any;
}

export interface QuerySpec {
	q: SubQuerySpec[];
	select?: string[];
	order?: string;
	bind?: IObjectOf<BindFn>;
	limit?: number;
}

export type SubQuerySpec = WhereQuerySpec | PathQuerySpec;

export interface WhereQuerySpec {
	where: Pattern[];
}

export interface PathQuerySpec {
	path: PathPattern;
}

export interface JoinOpts {
	limit: number;
	select: string[];
}