falcor/lib/response/InvalidateResponse.js

A JavaScript library for efficient data fetching.

var isArray = Array.isArray;
var ModelResponse = require("./ModelResponse");
var isPathValue = require("./../support/isPathValue");
var isJSONEnvelope = require("./../support/isJSONEnvelope");
var empty = {dispose: function() {}};

function InvalidateResponse(model, args) {
    // TODO: This should be removed.  There should only be 1 type of arguments
    // coming in, but we have strayed from documentation.
    this._model = model;

    var groups = [];
    var group, groupType;
    var argIndex = -1;
    var argCount = args.length;

    // Validation of arguments have been moved out of this function.
    while (++argIndex < argCount) {
        var arg = args[argIndex];
        var argType;
        if (isArray(arg)) {
            argType = "PathValues";
        } else if (isPathValue(arg)) {
            argType = "PathValues";
        } else if (isJSONEnvelope(arg)) {
            argType = "PathMaps";
        } else {
            throw new Error("Invalid Input");
        }

        if (groupType !== argType) {
            groupType = argType;
            group = {
                inputType: argType,
                arguments: []
            };
            groups.push(group);
        }

        group.arguments.push(arg);
    }

    this._groups = groups;
}

InvalidateResponse.prototype = Object.create(ModelResponse.prototype);
InvalidateResponse.prototype.progressively = function progressively() {
    return this;
};
InvalidateResponse.prototype._toJSONG = function _toJSONG() {
    return this;
};

InvalidateResponse.prototype._subscribe = function _subscribe(observer) {

    var model = this._model;
    this._groups.forEach(function(group) {
        var inputType = group.inputType;
        var methodArgs = group.arguments;
        var operationName = "_invalidate" + inputType;
        var operationFunc = model[operationName];
        operationFunc(model, methodArgs);
    });
    observer.onCompleted();

    return empty;
};

module.exports = InvalidateResponse;