orange-orm/src/table/executeQueries/resolveExecuteQuery.js

Object Relational Mapper

const getSessionSingleton = require('../getSessionSingleton');

function resolveExecuteQuery(context, query) {
	return resolve;

	function resolve(success, failed) {
		try {
			var client = getSessionSingleton(context, 'dbClient');
			query = negotiateNullParams(query);
			client.executeQuery(query, onCompleted);
		} catch (e) {
			failed(e);
		}

		function onCompleted(err, rows) {
			if (!err)
				success(rows);
			else
				failed(err);
		}
	}

}

function negotiateNullParams(query) {
	if (query && query.parameters && query.parameters.length > 0 && (query.parameters.filter(x => x === null || x === undefined).length > 0)) {
		var splitted = query.sql().split('?');
		var sql = '';
		var parameters = [];
		var lastIndex = splitted.length - 1;
		for (var i = 0; i < lastIndex; i++) {
			if (query.parameters[i] === null || query.parameters[i] === undefined)
				sql += splitted[i] + 'null';
			else {
				sql += splitted[i] + '?';
				parameters.push(query.parameters[i]);
			}
		}
		sql += splitted[lastIndex];
		return {
			sql: () => sql,
			parameters
		};

	}
	else
		return query;
}

module.exports = resolveExecuteQuery;