This page presents a collection of string list expressions valid for the Expression parser 201 - All functions.
String list is one of the data types that can be returned by an expression in Automation Toolbox for Jira.
String List Literals
The syntax of a string list literal is a comma separated list of strings in double quotes written inside brackets. Examples:
| Expression | Example of returned value | |
|---|---|---|
[] | Empty list. | - |
["red", "blue", "green"] | String list with 3 strings. | - |
["Ada Lovelace", "John von Neuman", "Alan Turing"] | String list with 3 strings. | - |
Reading Fields from Issue Lists
When we read field values from issues using field codes for string values (format %{...nnnnn}), the returned data type is a string list.
| Expression | Example of returned value |
|---|---|
fieldValue(%{...assignee}, subtasks()) | List of usernames of the assignees of the current issue's subtasks. It may contain repeated usernames. |
distinct(fieldValue(%{...assignee}, subtasks())) | List of usernames of the assignees of the current issue's subtasks. It will not contain repeated usernames, because of the usage of function distinct(). |
fieldValue(%{...priority}, linkedIssues("blocks, is cloned by")) | List of priorities of those issues linked to current issue through issue link types "blocks" and "is cloned by". |
You will find very useful these examples of Issue List expressions in order to select the issues you need to read fields from.
Reading Multi-valued Fields as String Lists
Fields codes of multi-valued fields like Affected versions, Fixed versions, Components, Labels, Attachments, Watchers, Request Participants, Multi-Select List, Check List, Multi-User Picker, Multi-Group Picker and Multi-Version Picker custom fields, return a string with a comma separated list of values. We can convert this string into a string list by means of function toStringList().
| Expression | Example of returned value |
|---|---|
toStringList(%{...version}) | If Fixed versions field code (i.e., %{...version}) returned "1.1, 1.2, 1.3", the expression would return ["1.1", "1.2", "1.3"] |
toStringList(%{...components}) | String list with the components currently selected in field Components. |
Reading Multi-valued Fields from Issue Lists
| Expression | Example of returned value |
|---|---|
distinct(toStringList(toString(fieldValue(%{...components}, subtasks())), ",")) | Returns a string list with all the components present in the sub-tasks of current issue. The list obtained doesn't contain duplicates, thanks to function distinct(). |
Parsing a String into a String List
We can use the following functions in order to parse a string into a string list:
| Expression | Example of returned value |
|---|---|
| toStringList(string s, string separators) : string list | INPUT: String with a list of tokens separated by one or more characters. OUTPUT: A string list with tokens in argument s separated by characters in argument separators. Example: toStringList("red, orange, yellow; green; blue; purple", ",;") returns the following string list: ["red", "orange", "yellow", "green", "blue", "purple"]. |
| findPattern(string s, string regexp) : string list | Returns a string list with all substrings in argument s matching regular expression in string argument regexp. Example: findPattern("Between 1900 and 2000 world population increase from 1.5 to 6.1 billions.", "\\d+(\\.\\d+)?") returns ["1900", "2000", "1.5", "6.1"]. |
| findPatternIgnoreCase(string s, string regexp) : string list | Returns a string list with all substrings in argument s matching regular expression in string argument regexp. Evaluation of the regular expression is carried out in ignoring case mode. Example: findPatternIgnoreCase("Grass is Green and Sky is Blue.", "red|green|blue") returns ["Green", "Blue"]. |
