odatafy-mongodb/dist/src/computeGenerator.js

convert oData requests through odatafy to MongoDB queries

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.generateComputeStage = exports.generateComputeStageFromComputedExpr = void 0;
var odatafy_parser_1 = require("odatafy-parser");
var filterGenerator_1 = require("./filterGenerator");
/**
 * Generate a MongoDB addFields stage based on an oData compute expression
 * @param computedExpr expression of compute parameter
 * @returns MongoDB addFields stage
 */
function generateComputeStageFromComputedExpr(computedExpr) {
    var ast = odatafy_parser_1.computeParser.parse(computedExpr);
    return generateComputeStage(ast);
}
exports.generateComputeStageFromComputedExpr = generateComputeStageFromComputedExpr;
/**
 * Generate a MongoDB addFields expression based on the ast of a parsed oData compute expression
 * @param ast abstract syntax tree of a parsed oData compute expression
 * @returns MongoDB addFields stage
 */
function generateComputeStage(ast) {
    var fields = {};
    ast.value.forEach(function (itemNode) {
        fields[itemNode.computeIdentifier] = (0, filterGenerator_1.processNode)(itemNode.commonExpr, false, { withoutExpr: true });
    });
    return {
        "$addFields": fields
    };
}
exports.generateComputeStage = generateComputeStage;