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falcor-path-utils

v0.7.5

Published

This repository contains utilities for transforming and manipulating Falcor paths.

Downloads

3,788

Readme

Falcor Path Utils

This repository contains utilities for transforming and manipulating Falcor paths.

Utility functions:

  • collapse(paths) Simplifies a set of paths. Example:

    var util = require("falcor-path-utils");
    var collapsedPaths = util.collapse([
      ["genres", 0, "titles", 0, "name"],
      ["genres", 0, "titles", 0, "rating"],
      ["genres", 0, "titles", 1, "name"],
      ["genres", 0, "titles", 1, "rating"]
    ]);
    
    // collapsed paths is ["genres", 0, "titles", {from: 0, to: 1}, ["name", "rating"]]
  • iterateKeySet(keySet, note) Takes in a keySet and a note and attempts to iterate over it.

  • toTree(paths) Converts paths to a tree with null leaves. (see spec)

  • toPaths(lengths) Converts a lengthTree to paths. (see spec)

  • pathsComplementFromTree(paths, tree) Returns a list of these paths that are not in the tree. (see spec)

  • pathsComplementFromLengthTree(paths, lengthTree) Like above, but for use with length tree.

  • hasIntersection(tree, path, depth) Tests to see if the intersection should be stripped from the total paths.

  • optimizePathSets(cache, paths, maxRefFollow) (see spec)

  • pathCount(pathSet) Returns the number of paths in a PathSet.

    var util = require("falcor-path-utils");
    console.log(util.pathCount(["titlesById", [512, 628], ["name","rating"]]))
    // prints 4, because ["titlesById", [512, 628], ["name","rating"]] contains...
    // ["titlesById", 512, "name"]
    // ["titlesById", 512, "rating"]
    // ["titlesById", 628, "name"]
    // ["titlesById", 628, "rating"]
  • escape(string) Escapes untrusted input to make it safe to include in a path.

  • unescape(string) Unescapes a string encoded with escape.

  • materialize(pathSet, value) Construct a JsonGraph of value at pathSet paths.