Timothy J Warren
7fbbff41c8
Start work of using promises to wrap connections and removing old callback api.
67 lines
1.5 KiB
JavaScript
67 lines
1.5 KiB
JavaScript
'use strict';
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const Adapter = require('../Adapter');
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const Result = require('../Result');
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const helpers = require('../helpers');
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const dbliteAdapter = require('dblite');
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class Sqlite extends Adapter {
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constructor (config) {
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let file = (helpers.isString(config)) ? config : config.file;
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const instance = Promise.resolve(dbliteAdapter(file)).then(conn => {
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// Stop the stupid 'bye bye' message being output
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conn.on('close', () => {});
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conn.on('error', (err) => {
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throw new Error(err);
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});
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// Make sure to actually pass on the connection!
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return conn;
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}).catch(e => console.error(e));
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super(instance);
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}
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/**
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* Transform the adapter's result into a standard format
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*
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* @param {*} result - original driver result object
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* @return {Result} - standard result object
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*/
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transformResult (result) {
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return new Result(result);
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}
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/**
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* Run the sql query as a prepared statement
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*
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* @param {String} sql - The sql with placeholders
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* @param {Array} params - The values to insert into the query
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* @return {Promise} - Returns a promise if no callback is provided
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*/
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execute (sql, params) {
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return this.instance.then(conn => {
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return conn.query(sql, params, (err, result) => {
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if (err) {
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throw new Error(err);
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}
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return Promise.resolve(this.instance).then(() => result);
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});
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});
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}
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/**
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* Close the current database connection
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* @return {void}
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*/
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close () {
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this.instance.then(conn => conn.close());
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}
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}
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module.exports = Sqlite;
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