Variable Transformation

The following variable and data types can be used in variable transformations:

Variable Types:

Data Types:

String
Number
Date / Date Math
List
JSON

Depending on the data variable type, the following operations are supported:

Operation	Data Type	Description
Lowercase	String	Convert a string to lowercase
Uppercase	String	Convert a string to uppercase
Trim	String	Returns a text value with the leading and trailing spaces removed
TrimPrefix	String	Returns a text value with the leading spaces removed
TrimSuffix	String	Returns a text value with the trailing spaces removed
Replace	String	Replaces a string
Split	String	Splits a string
Capitalize	String	Capitalizes the entire string
Titleize	String	Capitalizes the first letter of all individual words in a string
PadLeft	String	Adds spaces to the left of the string
PadRight	String	Adds spaces to the right of the string
Parse Text as JSON	String	Convert text formatted as JSON to a proper JSON output for use in subsequent OneCloud Commands
Parse Number	String	Convert numbers that are stored as text to a number
Add	Number	Adds a value to a number
Subtract	Number	Subtracts a value from a number
Multiple	Number	Multiples a number by a value
Divide	Number	Divides a number by a value
Round	Number	Rounds a number to the specified number of decimal places
Date & Time Format	String Date/Time	Format Date/DateTime strings
Date Math	String Date/Time	Add/subtract time units from a Date/DateTime
Sort	List	Sort a list based in ascending or descending order
Pick from List	List	Pick an individual element from a list. (0 for the first and -1 for the last element)
JSON Parsing	JSON	Pick individual elements from a proper JSON text string

String Transformation

String transformation enables any variable that is of data type string to be transformed to upper or lower case as well as parsed and converted to a JSON data type.

To start a transformation, select the variables and select the required transformation.

Example:

Number Transformation

Number transformation allows mathematic operations to be performed on both numbers and numbers stored as strings (text).

For numbers stored as strings, the Parse Number Transformation must be applied before any of the Number Transformations can be applied.

Date Transformation

Data transformation allows Date/DateTime strings to be transformed into various formats based upon strftime formatting symbols. For a comprehensive description of the format specifier, please refer to this strftime format guide. These formatting characters can then be combined with other separator characters such as the following characters: , : / .

The following table illustrates various format strings and the corresponding format.

Format	Example
%m-%d-%Y	01-30-2020
%H:%M	21:08

📓 Using Date Transformation with OneCloud Chain.ExecutionDateTime

If using the OneCloud System Variable, Chain.ExecutionDateTime, the Input Date Time Zone should be (UTC) Dublin, Edinburgh, Lisbon, London, since this reflects OneCloud's base timezone.

Example:

Date Math

Date math transformations enable timestamps to be added or subtracted based upon the following parameters:

Format	ISO extended or custom date format
Operation	Add/ Subtract
Amount	Numeric value
Unit	Day Month Year Hour Minute

Example:

List Transformation

Lists can be sorted in ascending or descending order, and specific elements can be extracted from a list. In the example below, the first Command lists the files in a directory, and the list output from the first Command is first sorted, and then the first value of that list is extracted.

📓 List Output

List transformation will only operate with Command outputs of the type 'List'.

Example:

JSON Transformation

Many public Rest APIs provide responses in a JSON format. The data in the response can be transformed and used within your chain. There are a few simple things to remember when using JSON transformations:

Elements in a list within JSON use zero-based indexing (this first element is at the zero index).
Reference the element name on the left
Match the element type (string, list, or JSON)

Example:

[{

	"email": "demo@onecloud.io",

	"decision": "rejected",

	"decidedAt": "2019-01-13T22:59:52.018377",

	"comment": "Please review again"

}, {

	"email": "demo@onecloud.io",

	"decision": "approved",

	"decidedAt": "2020-01-13T22:59:52.018377",

	"comment": "Looks great!"

}]

The example JSON above is a response from OneCloud Human Integration Workflow. If the second decision element is in the list to be selected, then a transformation would be added as follows:

Add a variable transformation on a variable that holds JSON (see example JSON above).
Add the first transformation `Parse Text as JSON`.
Add the second transformation `Get Value from JSON` and select the elements in the array.

Results: