sql-to-nosql
Version:
Run SQL quries on your Mongodb database.
55 lines • 2.53 kB
JavaScript
var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) {
function adopt(value) { return value instanceof P ? value : new P(function (resolve) { resolve(value); }); }
return new (P || (P = Promise))(function (resolve, reject) {
function fulfilled(value) { try { step(generator.next(value)); } catch (e) { reject(e); } }
function rejected(value) { try { step(generator["throw"](value)); } catch (e) { reject(e); } }
function step(result) { result.done ? resolve(result.value) : adopt(result.value).then(fulfilled, rejected); }
step((generator = generator.apply(thisArg, _arguments || [])).next());
});
};
import { parseQuery, parsedQueryToMongoQuery } from "./utils/parser.mjs";
import { connect } from "./utils/database.mjs";
export class SqlToNoSql {
constructor(config) {
this.config = config;
}
run(query) {
return __awaiter(this, void 0, void 0, function* () {
if (!query) {
throw new Error("missing query!");
}
// // TODO: add better validation!
// if ([";", "(", ")"].some((char) => query.includes(char))) {
// throw new Error("Invalid query, your query contains invalid characters!");
// }
const parsedQuery = parseQuery(query);
if (parsedQuery.command !== "select") {
throw new Error("Only select queries are supported");
}
const mongoQuery = parsedQueryToMongoQuery(parsedQuery);
if (query !== "select") {
throw new Error("Only select queries are supported");
}
try {
if (!this.client) {
this.client = yield connect(this.config.connection);
yield this.client.connect();
}
const db = this.client.db();
const collection = db.collection(mongoQuery.collection);
const data = yield collection[mongoQuery[parsedQuery.command]](mongoQuery.query, {
projection: mongoQuery.fields,
sort: mongoQuery.sort,
limit: mongoQuery.limit || 0,
skip: mongoQuery.skip || 0,
}).toArray();
return data;
}
catch (err) {
console.error(err);
throw Error("Something went wrong!");
}
});
}
}
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