58 lines
1.3 KiB
JavaScript
Executable File
58 lines
1.3 KiB
JavaScript
Executable File
"use strict";
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/** @module node-query */
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var NodeQuery = function() {
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var instance = null;
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/**
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* Create a query builder object
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*
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* @alias module:node-query
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* @param {String} drivername - The name of the database type, eg. mysql or pg
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* @param {Object} connObject - A connection object from the database library you are connecting with
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* @param {String} [connLib] - The name of the db connection library you are using, eg. mysql or mysql2. Optional if the same as drivername
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* @return {queryBuilder}
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*/
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this.init = function (driverType, connObject, connLib) {
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connLib = connLib || driverType;
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var fs = require('fs'),
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qb = require('./query-builder');
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var paths = {
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driver: __dirname + '/drivers/' + driverType + '.js',
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adapter: __dirname + '/adapters/' + connLib + '.js'
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};
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Object.keys(paths).forEach(function(type) {
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if ( ! fs.existsSync(paths[type]))
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{
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console.log(paths[type]);
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throw new Error('Selected ' + type + ' does not exist!');
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}
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});
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instance = qb(require(paths.driver), require(paths.adapter)(connObject));
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return instance;
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};
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/**
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* Return an existing query builder instance
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*
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* @return {queryBuilder}
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*/
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this.getQuery = function () {
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if ( ! instance) {
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throw new Error("No Query Builder instance to return");
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}
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return instance;
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};
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};
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module.exports = new NodeQuery(); |