How to throw an validation message on transition screen using Jira event listener plugin?

[Teja]

Hi Team,

I would like know how to throw an validation message on the workflow transition screen using the EventListener plugin, since I am new to SDK.

I have written a java condition to check my 'Target Version' field (version picker) is equals to my first unreleased version, if not tell user that validation checks.

My java file will be like this

@EventListener
public void onIssueEvent(IssueEvent issueEvent) {

Issue issue = issueEvent.getIssue();
CustomFieldManager customFieldManager = ComponentAccessor.getCustomFieldManager();
CustomField targetversion = customFieldManager.getCustomFieldObject("customfield_11400");
Object targetversionvalue= issue.getCustomFieldValue(targetversion);
Object targetversionvalue1= targetversionvalue.toString().replace("[", "").replace("]", "");
VersionManager versionmanager=ComponentAccessor.getVersionManager();
Collection<Version> version=versionmanager.getVersionsUnreleased(10207L, false);

Object versionvalue =version.iterator().next().toString();
if (targetversionvalue1.equals(versionvalue)) {
log.warn("Inside if loop....." );
throw new InvalidInputException("Target Version should be earliestUnreleased version");
}

}

I cannot able to do using throw class.

Since 'Target Version' validation check need throughout the workflow and other projects, so my manager need this check centralized so I developed EventListener Plugin.  

Regadrs

Tejas

[Nic Brough -Adaptavist-]

You don't.

It's nonsense to do validation in an event because they are a response to something being done, not part of the activity.  It's too late in the process.  The user has already changed the values and the change has been committed into the data.  The firing of the event is the very last thing that happens in the change process.

You need to write this as a validator or Behaviour.

[Teja]

Hi @Nic Brough -Adaptavist- ah...ha!

That's I wanted to hear from you guys.

So if I create a workflow validator, I need to go & add validator each and every workflow transition using 'Target Version'. Ok that is fine I can add for the first time.

If I make any changes to java file, do I need to remove and add for the second time each and every workflow transition?

- Tejas

[Nic Brough -Adaptavist-]

No, you'll need to add the validator where you need it.

[Teja]

@Nic Brough -Adaptavist- Thanks Nic, help full.

-Tejas