96 lines
1.8 KiB
JavaScript
96 lines
1.8 KiB
JavaScript
'use strict';
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const helpers = require('./helpers');
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/**
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* Query result object
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*
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* @param {Array} rows - the data rows of the result
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* @param {Array} columns - the column names in the result
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*/
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class Result {
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/**
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* Create a result object
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*
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* @private
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* @param {Array} [rows] - the data rows of the result
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* @param {Array} [columns] - the column names in the result
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*/
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constructor (rows, columns) {
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this._rows = (rows == null) ? [] : rows;
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this._columns = (columns == null) ? [] : columns;
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// If columns aren't explicitly given,
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// get the list from the first row's keys
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if (
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this._columns.length === 0 &&
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this._rows.length > 0 &&
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helpers.isObject(rows[0])
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) {
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this.columns = Object.keys(rows[0]);
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}
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}
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/**
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* Return the result rows
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*
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* @private
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* @return {Array} - the data rows of the result
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*/
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get rows () {
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return this._rows;
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}
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/**
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* Set the result rows for the result object
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*
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* @private
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* @param {Array} rows - the data rows of the result
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* @return {void}
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*/
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set rows (rows) {
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this._rows = rows;
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}
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/**
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* Return the result columns
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*
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* @private
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* @return {Array} - the column names in the result
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*/
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get columns () {
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return this._columns;
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}
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/**
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* Set the result columns for the result object
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*
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* @private
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* @param {Array} cols - the array of columns for the current result
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* @return {void}
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*/
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set columns (cols) {
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this._columns = cols;
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}
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/**
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* Get the number of rows returned by the query
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*
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* @return {Number} - the number of rows in the result
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*/
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rowCount () {
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return this._rows.length;
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}
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/**
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* Get the number of columns returned by the query
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*
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* @return {Number} - the number of columns in the result
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*/
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columnCount () {
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return this._columns.length;
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}
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}
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module.exports = Result;
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