49 lines
1.1 KiB
JavaScript
Executable File
49 lines
1.1 KiB
JavaScript
Executable File
/**
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* Class that wraps database connection libraries
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*
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* @private
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* @param {Promise} instance - The connection object
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*/
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class Adapter {
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/**
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* Invoke an adapter
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*
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* @constructor
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* @param {Promise} instance - Promise holding connection object
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*/
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constructor (instance) {
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this.instance = instance;
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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 resolving to the result of the database query
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*/
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execute (sql, params) {
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throw new Error('Correct adapter not defined for query execution');
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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 {*} originalResult - the original result object from the driver
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* @return {Result} - the new result object
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*/
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transformResult (originalResult) {
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throw new Error('Result transformer method not defined for current adapter');
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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.end());
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}
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}
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module.exports = Adapter;
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