Groovy Sript Runner - Working from console but not as post-function

Hi Everybody,

I have a problem with a quite simple groovy script. The script shall remove all watchers from an issue after issue creation. I want to implement it as a post-function after the creation. The script runs fine from the Script Runner Console (with the commented line uncommented and the next one commented instead) but if I save it and append it to the create transission, I get a null pointer.

Here is the code:

import com.atlassian.jira.ComponentManager;
import com.atlassian.jira.issue.Issue;
import com.atlassian.jira.issue.MutableIssue;
import java.util.Locale;

def watcherManager = ComponentManager.getInstance().getWatcherManager();

//MutableIssue issue = componentManager.getIssueManager().getIssueObject("UMWCC-2");
Issue issue = issue;

List<ApplicationUser> watchers = watcherManager.getWatchers(issue,Locale.getDefault());
for (ApplicationUser user:watchers){

There is not even a StackTrace in the log. All there is is:

2014-10-23 19:23:42,898 http-bio-8080-exec-18 ERROR chris 1163x12866x1 135bdgr /secure/QuickCreateIssue.jspa [groovy.canned.utils.ConditionUtils] javax.script.ScriptException: java.lang.NullPointerException: Cannot invoke method contains() on null object


I tried a bit of debugging, using the

import org.apache.log4j.Category
def Category log = Category.getInstance("com.onresolve.jira.groovy.PostFunction")
log.debug "debug statements"

routine with some calls before and after the


But the loop seems to work well...


Can somebody help me here?




6 answers

It's not your script that's causing a problem, it's something else on the workflow. Does this error go away if you don;t add your script to the workflow at all?

You are absolutly right! It looks like the problem is caused by a built-in Script Runner script, where I check an empty checkbox field for a containing value. I am not quite sure why this happens, but that's a different question. As well as my original problem, that is not solved yet. I hoped to work around the "reporter is a default watcher" with this script as a post-function after issue creation. Any idea why this does not work? Or should I open a seperate question for that?

OK, I found a way. It looks like the object type of "issue" is not adequate for the stopWatching-method. By replacing: Issue issue = issue; with MutableIssue issue = ComponentManager.getInstance().getIssueManager().getIssueObject(issue.getKey()); it works like expected. Thanks Jamie! And I would appriciate if you would explain the solution a bit more in depth.


I need to use this feature in one of my listener.

I have written the code like below:

MutableIssue issue = event.getIssue();

List<ApplicationUser> watchers = watcherManager.getWatchers(issue,Locale.getDefault());
log.debug("watchers all:" + watchers);
for (ApplicationUser user:watchers){
log.debug ("watcher to remove:" +user);

log.debug ("watcher after remove:" +watchers);



log output as below:

watchers all: [user1, user2, user3]

watcher to remove: user1

watcher after remove: [user1, user2, user3]

watcher to remove: user2

watcher after remove: [user1, user2, user3]

watcher to remove: user3

watcher after remove: [user1, user2, user3]


Can anyone please let me know if I am doing anything wrong

you need to fetch the watchers again, it's not going to change the list that you created at the beginning.

Hi Jamie,

Thanks for the update. Can you please help me a bit further on how to fetch the watcher in the loop again & use that updated watcher list.



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