@sap-cloud-sdk/core/dist/odata-v2/request-builder/response-data-accessor.js

SAP Cloud SDK for JavaScript core

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.responseDataAccessorV2 = exports.responseDataAccessor = exports.getSingleResult = exports.getLinkedCollectionResult = exports.isCollectionResult = exports.getCollectionResult = void 0;
var util_1 = require("@sap-cloud-sdk/util");
var logger = (0, util_1.createLogger)({
    package: 'core',
    messageContext: 'response-data-accessor'
});
/**
 * Methods to extract the data from OData v2 responses.
 */
/**
 * Extract the collection data from the response.
 * If the data does not contain a collection an empty array is returned.
 * @param data - Response of the OData v2 service
 * @returns any[] - Collection extracted from the response
 */
function getCollectionResult(data) {
    var _a;
    validateCollectionResult(data);
    return isCollectionResult(data) ? (_a = data === null || data === void 0 ? void 0 : data.d) === null || _a === void 0 ? void 0 : _a.results : [];
}
exports.getCollectionResult = getCollectionResult;
/**
 * Checks if the data contains a collection result.
 * @param data - Response of the OData service.
 * @returns `true`, if the data is a collection result.
 */
function isCollectionResult(data) {
    var _a;
    return Array.isArray((_a = data === null || data === void 0 ? void 0 : data.d) === null || _a === void 0 ? void 0 : _a.results);
}
exports.isCollectionResult = isCollectionResult;
function validateCollectionResult(data) {
    if (!isCollectionResult(data)) {
        logger.warn('The given response data does not have the standard OData v2 format for collections.');
    }
}
/**
 * Extract the collection data from the one to many link response.
 * If the data does not contain a collection an empty array is returned.
 * @param data - Response of the one to many link
 * @returns any[] - Collection extracted from the response
 */
function getLinkedCollectionResult(data) {
    if (Array.isArray(data === null || data === void 0 ? void 0 : data.results)) {
        return data.results;
    }
    return Array.isArray(data) ? data : [];
}
exports.getLinkedCollectionResult = getLinkedCollectionResult;
/**
 * Parses the data of a single result.
 * @param data - Response of the OData service.
 * @returns The single result object if existent, an empty object otherwise.
 */
function getSingleResult(data) {
    var _a;
    validateSingleResult(data);
    return isSingleResultAsCollection(data) ? (_a = data === null || data === void 0 ? void 0 : data.d) === null || _a === void 0 ? void 0 : _a.results : (data === null || data === void 0 ? void 0 : data.d) || {};
}
exports.getSingleResult = getSingleResult;
// Workaround to be compatible with services that wrongly implement the OData v2 protocol and serve single responses in the same format as collections
function isSingleResultAsCollection(data) {
    var _a;
    return !!((_a = data === null || data === void 0 ? void 0 : data.d) === null || _a === void 0 ? void 0 : _a.results) && !isCollectionResult(data);
}
function validateSingleResult(data) {
    if (isSingleResultAsCollection(data)) {
        logger.warn('The given response data has the format for collections instead of the standard OData v2 format for single results.');
    }
    if (!(data === null || data === void 0 ? void 0 : data.d)) {
        logger.warn('The given response data does not have the standard OData v2 format for single results.');
    }
}
exports.responseDataAccessor = {
    getCollectionResult: getCollectionResult,
    getLinkedCollectionResult: getLinkedCollectionResult,
    getSingleResult: getSingleResult,
    isCollectionResult: isCollectionResult
};
exports.responseDataAccessorV2 = exports.responseDataAccessor;
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