odatafy-mongodb/dist/src/sortGenerator.js

convert oData requests through odatafy to MongoDB queries

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.generateSortStage = exports.generateSortFromOrderbyExpr = void 0;
var odatafy_parser_1 = require("odatafy-parser");
/**
 * Get MongoDB sort stage based on an oData url orderby expression
 * @param expr expression from url
 * @returns MongoDB sort stage
 */
function generateSortFromOrderbyExpr(expr) {
    var ast = odatafy_parser_1.orderbyParser.parse(expr);
    return generateSortStage(ast);
}
exports.generateSortFromOrderbyExpr = generateSortFromOrderbyExpr;
/**
 * Get MongoDB sort stage based on the syntax tree of an oData orderby expression
 * @param ast abstract syntax tree of the parsed orderby expression
 * @returns MongoDB sort stage
 */
function generateSortStage(ast) {
    var result = {
        '$sort': {}
    };
    ast.value.forEach(function (node) {
        result.$sort[node.value] = node.type == odatafy_parser_1.OrderDirection.Asc ? 1 : -1;
    });
    return result;
}
exports.generateSortStage = generateSortStage;