plyql/build/plyql-json-server.js

A SQL-like interface for Plywood

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
var plywood_1 = require("plywood");
var json_server_1 = require("./json-server");
var plyql_executor_1 = require("./plyql-executor");
function plyqlJSONServer(port, context, timezone) {
    json_server_1.createJSONServer(port, function (parameters, res) {
        var sql = parameters.sql, expression = parameters.expression;
        var resultPromise;
        if (expression) {
            var ex = void 0;
            try {
                ex = plywood_1.Expression.fromJSLoose(expression);
            }
            catch (e) {
                res.status(400).send({ error: e.message });
                return;
            }
            resultPromise = plyql_executor_1.executePlywood(ex, context, timezone);
        }
        else {
            var sqlParse = void 0;
            try {
                sqlParse = plywood_1.Expression.parseSQL(sql);
            }
            catch (e) {
                res.status(400).send({ error: e.message });
                return;
            }
            if (sqlParse.verb && sqlParse.verb !== 'SELECT') {
                res.status(400).send({ error: "Unsupported SQL verb " + sqlParse.verb + " must be SELECT, DESCRIBE, SHOW, or a raw expression" });
                return;
            }
            resultPromise = plyql_executor_1.executeSQLParse(sqlParse, context, timezone);
        }
        resultPromise
            .then(function (value) {
            if (plywood_1.Dataset.isDataset(value)) {
                res.json({
                    result: value.toJS()
                });
            }
            else {
                res.json({
                    result: value
                });
            }
        })
            .catch(function (e) {
            res.status(500).send({ error: e.message });
        });
    });
}
exports.plyqlJSONServer = plyqlJSONServer;