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Script runner - java.lang.NullPointerException: Cannot invoke method getAt() on null object

BarL

Hi,

I am keep getting this error "java.lang.NullPointerException: Cannot invoke method getAt() on null object" on the lest line on the below code "def DefectLinkedIssue = ....."

the relevant part of the code:

import com.atlassian.jira.issue.Issue
import com.atlassian.jira.issue.ModifiedValue
import com.atlassian.jira.issue.util.DefaultIssueChangeHolder
import com.atlassian.jira.component.ComponentAccessor
import com.atlassian.jira.issue.link.IssueLinkManager
import com.atlassian.jira.issue.link.IssueLinkTypeManager

def issue = event.issue as Issue
def currentUser = ComponentAccessor.jiraAuthenticationContext.loggedInUser
def issueLinkManager = ComponentAccessor.getIssueLinkManager()
def issueManager = ComponentAccessor.getIssueManager()
def DocumentationlinkName = 'Documentation Task'

def DefectLinkedIssue = ComponentAccessor.getIssueLinkManager()?.getLinkCollection(issue, currentUser)?.getOutwardIssues(DocumentationlinkName)[0]

Accepted answers

Fran Garcia

the [0] is what gives you the message when there are no issues in

ComponentAccessor.getIssueLinkManager()?.getLinkCollection(issue, currentUser)?.getOutwardIssues(DocumentationlinkName)

this could work

def DefectLinkedIssueCollection = ComponentAccessor.getIssueLinkManager()?.getLinkCollection(issue, currentUser)?.getOutwardIssues(DocumentationlinkName)

if (DefectLinkedIssueCollection?.size() >0) {
     def DefectLinkedIssue = DefectLinkedIssueCollection[0]
}else{
     // there are no links
}

All comments

Ilya Turov

hello, because this part

ComponentAccessor.getIssueLinkManager()?.getLinkCollection(issue, currentUser)?.getOutwardIssues(DocumentationlinkName)

returns you empty list, hence it can't get element at 0's key

are you sure you are looking for outward issues, or that link name is correct?

I'd recommend experimenting in script console by replasing line

def issue = event.issue as Issue

def issue = ComponentAccessor.issueManager.getIssueObject("JIRA-123")

(replace JIRA-123 with your issue key)

Fran Garcia

the [0] is what gives you the message when there are no issues in

ComponentAccessor.getIssueLinkManager()?.getLinkCollection(issue, currentUser)?.getOutwardIssues(DocumentationlinkName)

this could work

def DefectLinkedIssueCollection = ComponentAccessor.getIssueLinkManager()?.getLinkCollection(issue, currentUser)?.getOutwardIssues(DocumentationlinkName)

if (DefectLinkedIssueCollection?.size() >0) {
     def DefectLinkedIssue = DefectLinkedIssueCollection[0]
}else{
     // there are no links
}

fjodors

https://docs.atlassian.com/software/jira/docs/api/8.1.0/com/atlassian/jira/issue/link/IssueLinkType.html

Looks like getName() and getOutward() return different values.

For e.g. I have link name "clones"

getOutward() returns "clones" ,but getName() returns "Cloners"

See this code it could be helpful

import com.atlassian.jira.issue.Issue;
import com.atlassian.jira.issue.IssueManager;
import com.atlassian.jira.issue.link.IssueLink
import com.atlassian.jira.issue.link.IssueLinkType
import com.atlassian.jira.issue.link.IssueLinkManager
import com.atlassian.jira.issue.link.IssueLinkTypeManager
import com.atlassian.jira.issue.link.LinkCollection
import com.atlassian.jira.component.ComponentAccessor;
import com.atlassian.jira.user.ApplicationUser

IssueManager im = ComponentAccessor.getComponent(IssueManager);
IssueLinkManager ism = ComponentAccessor.getComponent(IssueLinkManager);
ApplicationUser currentUser = ComponentAccessor.getJiraAuthenticationContext().getLoggedInUser();


Issue createdIssue = im.getIssueByKeyIgnoreCase('<IssueKey>');

LinkCollection issueLinksCol = ism.getLinkCollection(createdIssue, currentUser);
Collection<Issue> linkedIssuesCol = issueLinksCol.getAllIssues()




def result="start...<br>";




for (Issue linkedIssue : linkedIssuesCol) {
result+=linkedIssue.getKey()+"<br>";
}

result+="-----------------------------<br>";

Set<IssueLinkType> linkTypesSet = issueLinksCol.getLinkTypes()
String linkName ='clones'; 
for (IssueLinkType ilt: linkTypesSet){

   if(ilt.getOutward()=='clones'){
      linkName=ilt.getName();
   }

   result+=ilt.getOutward()+"<br>";
}

result+="-----------------------------<br>";

List<Issue> myList = issueLinksCol.getOutwardIssues(linkName);

for (Issue iss : myList) {
result+=iss.getKey()+" a <br>";
}

result+="-----------------------------<br>";

result+=linkName;

BarL

@Fran Garcia Thank you so much for helping me. it worked!!!

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