node-query/lib/adapters/Firebird/node-firebird.js

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'use strict';
const Adapter = require('../../Adapter');
const Result = require('../../Result');
const fb = require('node-firebird');
class Firebird extends Adapter {
constructor (config) {
super({});
this.instance = new Promise((resolve, reject) => {
fb.attach(config, (err, instance) => {
if (err) {
return reject(err);
}
return resolve(instance);
});
});
}
/**
* Run the sql query as a prepared statement
*
* @param {String} sql - The sql with placeholders
* @param {Array} params - The values to insert into the query
* @return {Promise} - Returns a promise if no callback is provided
*/
execute (sql, params) {
return this.instance.then(conn => {
return new Promise((resolve, reject) => {
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conn.query(sql, params, (err, result) => {
if (err) {
return reject(err);
}
return resolve(this.transformResult(result));
});
});
});
}
/**
* Transform the adapter's result into a standard format
*
* @param {*} originalResult - the original result object from the driver
* @return {Result} - the new result object
*/
transformResult (originalResult) {
return new Result(originalResult);
}
/**
* Close the current database connection
* @return {void}
*/
close () {
this.instance.then(conn => conn.detach());
}
}
module.exports = Firebird;