Standard JS Built-in Function

TapData Cloud offers you cloud services that are suitable for scenarios requiring rapid deployment and low initial investment, helping you focus more on business development rather than infrastructure management. Free trial with TapData Cloud.TapData Enterprise can be deployed in your local data center, making it suitable for scenarios with strict requirements on data sensitivity or network isolation. It can serve to build real-time data warehouses, enable real-time data exchange, data migration, and more.TapData Community is an open-source data integration platform that provides basic data synchronization and transformation capabilities. This helps you quickly explore and implement data integration projects. As your project or business grows, you can seamlessly upgrade to TapData Cloud or TapData Enterprise to access more advanced features and service support.

Standard JS nodes can only process and operate on data records. If you require the usage of system built-in functions for external calls, such as networking or database operations, you can utilize enhanced JS nodes.

For information on how to use and scenarios, see JS processing node.

DateUtil

parse

Description: Converts date strings in various formats to Date.

Example:

• General Usage

  var dte = DateUtil.parse('2010-01-01 00:00:00');

• Advanced usage: parse(dateString, timeoffset), that is, specify the time zone offset while converting.

  // UTC+08:00
  var dte = DateUtil.parse('2010-01-01 00:00:00', 8);
  
  // UTC+0
  var dte = DateUtil.parse('2010-01-01 00:00:00', 0);

determineDateFormat

Description: Get the date format.

Example:

var format = DateUtil.determineDateFormat('2010-01-01 00:00:00');

timeStamp2Date

Description: Converts the timestamp to a date string in the specified format.

Example:

var dteStr = DateUtil.timeStamp2Date(1592233019140, 'yyyy-MM-dd HH:mm:ss');

addYears/addMonths/addDays/addHours/addMinutes/addSeconds

Description: Adds or subtracts the year/month/day/hour/minute/second of the date.

Example:

var dte = DateUtil.addYears(new Date(), 1);
dte = DateUtil.addYears(dte, -1);

sameYear/sameMonth/sameDay/sameHour/sameMinute/sameSecond

Description: Compares the year/month/day/hour/minute/second of the date.

Example:

if ( DataUtil.sameYear(new Date(), new Date()) ) {
    ...
}

idGen/UUIDGenerator

uuid

Description: Generate uuid, if you use var str = uuid();, you can get a random string.

Example:

// Both methods below are available
var uuid = idGen.uuid();
var uuid = UUIDGenerator.uuid();

objectId

Description: Generate MongoDB ObjectId.

Example:

// Both methods below are available
var oid = idGen.objectId();
var oid = UUIDGenerator.objectId();

objectIdStr

Description: Generate MongoDB ObjectId String section.

Example:

// Both methods below are available
var oidStr = idGen.objectIdStr();
var oidStr = UUIDGenerator.objectIdStr();

HashMap

put/remove

Description: Hash dictionary.

Example:

var map = new HashMap();
map.put(“name”, “test”);
map.remove(“name”);

ArrayList

add/remove

Description: Array type.

Example:

var list = new ArrayList();
list.add(“test1”);
list.remove(0);

Date

add/remove

Description: Date type.

Example:

var dte = new Date();
var year = dte.getYear()+1900;

JSONUtil

json2List/obj2Json/obj2JsonPretty/json2Map

Description: JSON format conversion.

Example:

var d = new Date();
var json = JSONUtil.obj2Json(d)

HanLPUtil

hanLPParticiple

Description: Chinese word segmentation tool, two parameters need to be set in parentheses, the format is (String inputString, String language).

Example:

var d = HanLPUtil.hanLPParticiple('你好', 'HK_T')

Parameter Description

• inputString: A string that requires word segmentation.

• language: the type of the language with the word segmentation, support:

  • CH_S: Simplified Chinese.

  • CH_T: Traditional Chinese.

  • HK_T: Traditional Chinese (Hong Kong).

  • TW_T: Traditional Chinese (Taiwan).

Returns: Array type, that is, the result set after word segmentation.

split_chinese

Description: Chinese word segmentation tool, two parameters need to be set in parentheses, the format is (String inputString, String language).

Example:

var strs = split_chinese("这是一个中文句子", "CH_S");

Parameter Description

• inputString: A string that requires word segmentation.

• language: the type of the language with the word segmentation, support:

  • CH_S: Simplified Chinese.

  • CH_T: Traditional Chinese.

  • HK_T: Traditional Chinese (Hong Kong).

  • TW_T: Traditional Chinese (Taiwan).

Returns: Array type, that is, the result set after word segmentation.

util

strToBase64/base64ToStr/unwind

Description: String format conversion.

Example:

// Convert the string to Base64 format
var b = util.strToBase64('aa');
// Split JSON arrays into hierarchy levels
var list = util.unwind(map, 'a.b.c');

MD5Util/MD5

Description: MD5 encryption tool.

Example:

// Get the MD5 signature of a string, the second parameter indicates whether to convert it to uppercase
var b = MD5Util.crypt('aa', true);
// Or
var b = MD5('aa', true);

Collections

sort/get/emptySet/emptyList

Description: Collection tool classes, such as sorting, getting collections, etc.

Example:

// Sort the List
Collections.sort(list);
// Get an empty collection
var set = Collections.emptySet();

MapUtil

getValueByKey/needSplit/removeValueByKey/containsKey/getValuePositionInMap/deepCloneMap/copyToNewMap/putValueInMap/recursiveFlatMap/obj2Map

Description: Dictionary tool class.

Example:

// Get the value of a specified level from a given map
var a = MapUtil.getValueByKey(map, 'a.b.c');

sleep

Description: The duration of the program hibernation is specified in milliseconds.

Example:

// Sleep for 10 milliseconds in the program
sleep(10);