polardbxengine/storage/ndb/nodejs/jones-ndb/Converters/NdbTimeConverter.js

70 lines
2.4 KiB
JavaScript

/*
Copyright (c) 2013, 2016, Oracle and/or its affiliates. All rights reserved.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License, version 2.0,
as published by the Free Software Foundation.
This program is also distributed with certain software (including
but not limited to OpenSSL) that is licensed under separate terms,
as designated in a particular file or component or in included license
documentation. The authors of MySQL hereby grant you an additional
permission to link the program and your derivative works with the
separately licensed software that they have included with MySQL.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License, version 2.0, for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
"use strict";
/**********************
This is the standard TypeConverter class used with TIME columns
in the Ndb Adapter.
On the JavaScript side, this converter takes a string formatted as
"HH:MM:SS.sss" with optional sign +/-, and precision after the decimal
point up to six digits.
On the database side, TIME columns are read and written using a MySQLTime
structure. MySQL TIME is a signed type, and the sign is preserved.
In MySQL 5.6, MySQL TIME can also support up to microsecond precision.
An application can override this converter and use MySQLTime directly:
sessionFactory.registerTypeConverter("TIME", null);
Or replace this converter with a custom one:
sessionFactory.registerTypeConverter("TIME", myConverterClass);
************************/
var jones = require("database-jones"),
MySQLTime = require(jones.common.MySQLTime),
udebug = unified_debug.getLogger("NdbTimeConverter.js");
exports.toDB = function(jsValue) {
var dbtime;
if(typeof jsValue === 'string') {
dbtime = new MySQLTime().initializeFromTimeString(jsValue);
} else if(jsValue === null) {
dbtime = null;
}
return dbtime;
};
exports.fromDB = function(dbTime) {
if(dbTime === null) {
return null;
}
if(typeof dbTime === 'object') {
return MySQLTime.initializeFromNdb(dbTime).toTimeString();
}
};