This tutorial will guide you through writing Groovy scripts that test the value of a field and perform an action based on the outcome.For this you need to access the field of an issue looking at the Issue interface and compare it against a value using the Groovy operators. 

On this page:

2.1 Test the value of a field against a String

This section of the tutorial guides you through writing a conditional statement that compares the value of a field against a String. Imagine a functional use case where you want to allow the progress on an issue only when the issue is assigned to the logged in user. For this you will need to write a Groovy script in the Scripted (Groovy) condition to compare the usernames of the Assignee and the logged in user. 

Writing the script

Step 1 - Navigate to the condition

1. Go to the Administration icon  and click on it.
2. Go to Issues - > Workflows
3. Locate the workflow GIJ: Process Management Workflow
4. Edit it
5. Click on transition Start Progress
6. Go to the Conditions tab
7. Edit the Scripted (Groovy) condition which is the first condition in the list.

Step 2 - Write the script in the condition

1. Write the following script in Groovy script.

   issue.get("assignee").name == currentUser.name

   ---

   (1) Accessing the assignee of an issue using the get() method and fetching the name of the ApplicationUser using .name

2. ---

   Your configuration should look like this:
3. 

Step 3 - Test your script

1. Click on Test Groovy Script.
2. Input the issue key GIJ-5
3. Click on Test
4. The following result will be displayed.
5. 

Step 4 - Save the configuration

1. Click on Update
2. Publish the workflow (you dont need to save a backup copy).

Step 5 - Test it on an issue

1. View the issue GIJ-5 in a new tab.
2. Check that the transition Start Progress is not available for a trigger on the issue GIJ-5.
3. Click on Assign to me, to assign it to the logged in user.
4. Check that the transition Start Progress is now available for a trigger on the issue GIJ-5. 

Use cases

The output of the code is a Boolean. You can use this script in any other relevant context, such as allowing only the reporter of the issue to close the issue.

References

• currentUser variable
• Accessing the Assignee of an issue

2.1 Writing a simple conditional statement

This section of the tutorial will teach you writing a simple condition and testing it in the Groovy script tester on the JMWE administration pages. Let us write a simple condition to check that the priority of an issue is Critical or Highest. 

Writing the script

Step 1 - Navigate to the Groovy script tester in the admin pages

1. Go to the Administration icon  and click on it.
2. Locate Add-ons from the menu and click on it.
3. Locate JIRA MISC WORKFLOW EXTENSIONS on the left panel.
4. Click on Groovy script tester.

Step 2 - Write the script in the editor

1. Write the following script in the editor.

   if(issue.getAsString("priority") == "Critical" || issue.getAsString("priority") == "Highest"){
     return true
   }
   else{
     return false
   }

2. Your script will look like this:
3. 

Step 3 - Test your script

1. Click on Test Groovy Script.
2. Input the issue key GIJ-3
3. Click on Test
4. The following result will be displayed. 
5. 

Step 4 - Simplify your script

You can simplify the script removing the if-else and returning the result of the comparison which is a Groovy truthy or falsy

1. Go to the editor

2. Replace the script with the following code:

   issue.getAsString("priority") == "Critical" || issue.getAsString("priority") == "Highest"

Step 5 - Retest your script

1. Click on Test again.
2. The following result will be displayed. 
3. 

Use cases

The output of the code is a boolean value. You can use this script in any relevant context, such as, Assign the issue to the Project lead only if the priority of the issue is Critical or Highest.

References

• Accessing the priority of an issue

2.3 Writing multiple conditions using switch

This section of the tutorial will guide you through writing multiple conditions using the switch control structure

Writing the script

Step 1 - Navigate to the post-function

1. Go back to the previous tab.
2. Edit the workflow in Diagram mode.
3. Click on the Create transition
4. Click on Post-functions
5. Edit the second post-function in the list.

Step 2 - Write the script in the post-function

1. Write the following script in Value.

   def component = issue.getAsString("components")
   def priority = ""
   switch (component) {
    case "Finance" : priority = "Highest"; break
    case "Production Planning" || "Quality Management" : priority = "High"; break
    default : priority = "Medium"; break
   }

2. Your script should look like this:
3. 

Step 3 - Test your script

1. Click on Test Groovy Script.
2. Input the issue key GIJ-5
3. Click on Test
4. The following result will be displayed.
5. 

Use cases

The output of the code is a String representing the priority of an issue. You can use this script in any relevant context, such as, setting the priority of the issue to based on the Component/s.

References

• Accessing the Component/s of an issue
• switch