How to get a list of modified fields on ScriptRunner on IssueUpdated event?

[Arthur Accioly]

I created a Script Listener for the IssueUpdated event and I'm trying to get a list of the changed fields. For some reason the method getModifiedFields() is coming empty. Somebody knows why?

import com.atlassian.jira.issue.managers.DefaultIssueManager
import com.atlassian.jira.issue.IssueManager
import com.atlassian.jira.issue.fields.CustomField
import com.atlassian.jira.issue.Issue
import com.atlassian.jira.component.ComponentAccessor
import com.atlassian.jira.issue.MutableIssue
import com.atlassian.jira.issue.ModifiedValue

log.setLevel(org.apache.log4j.Level.DEBUG)

Issue mainIssue = event.issue

MutableIssue mutableIssue = (MutableIssue)mainIssue
def modFields = mutableIssue.getModifiedFields()
log.debug("Modified fields count: "+modFields.count) // null
log.debug("Modified fields: "+modFields.toString()) //  [:]
log.debug("Original Ticket: "+mainIssue.key) // EPS-39

[Arthur Accioly]

I could find the answer to my question turning google upside down. Now I'm stuck in the part of the label below. Any help is very welcomed...

import com.atlassian.jira.issue.managers.DefaultIssueManager
import com.atlassian.jira.issue.IssueManager
import com.atlassian.jira.issue.fields.CustomField
import com.atlassian.jira.issue.Issue
import com.atlassian.jira.issue.IssueInputParameters
import com.atlassian.jira.component.ComponentAccessor
import com.atlassian.jira.issue.MutableIssue
import com.atlassian.jira.issue.ModifiedValue
import org.ofbiz.core.entity.GenericValue
import com.atlassian.jira.bc.issue.IssueService
import com.atlassian.jira.ComponentManager
import com.atlassian.jira.bc.issue.IssueService
import com.atlassian.jira.bc.issue.DefaultIssueService
log.setLevel(org.apache.log4j.Level.DEBUG)
def customFieldManager = ComponentAccessor.getCustomFieldManager()
Issue mainIssue = event.issue
// Get Custom Field Object "Original Ticket"
def originalTicket = customFieldManager.getCustomFieldObjectByName("Original Ticket")
// Get Value of the Custom Field Object "Original Ticket"
String targetTicketKey = mainIssue.getCustomFieldValue(originalTicket).toString()
// Get Original Ticket Object based on the custom field value
def targetIssue = ComponentAccessor.getIssueManager().getIssueObject(targetTicketKey)
// Get list of modified values in the original ticket to update target ticket
List<GenericValue> changeItemsList = event.getChangeLog().getRelated("ChildChangeItem")
Iterator<GenericValue> changeItemListIterator = changeItemsList.iterator()
// Objects related to what changed
Object oldValue
Object newValue
// Variables used to change the value of the target ticket
def userManager = ComponentAccessor.getUserManager()
def auser = userManager.getUserByKey("Sync User")
def issueManager = ComponentAccessor.getIssueManager()
CustomField custom
// Loop for all the changed fields
while (changeItemListIterator.hasNext()) {
    GenericValue changeItem = (GenericValue)changeItemListIterator.next()
    String currentFieldName = changeItem.get("field").toString()
    log.debug("Current field: "+currentFieldName)
    oldValue = changeItem.get("oldstring")
    newValue = changeItem.get("newstring")
    if (oldValue != null && newValue != null){
        log.debug("Field changed from: "+oldValue+" to "+newValue)
        switch (currentFieldName){
            case "summary": 
              log.debug("Found switch: Summary")
              targetIssue.setSummary(newValue.toString())
            break
            case "description": 
              log.debug("Found switch: Description")
              targetIssue.setDescription(newValue.toString())
            break
            case "Affected Version(s)": 
              log.debug("Found switch: Affected Version(s)")
              // This is a label field. I'm stuck here and I don't know how to manipulate the value.
              // Labels are a set type, studing more about it.
              custom = customFieldManager.getCustomFieldObjectByName("Affected Version(s)")
              targetIssue.setCustomFieldValue(custom,newValue)
            break
            default: log.debug("Not found: "+currentFieldName)
        }
    }
    // Update my target Issue (in another project) that I'm trying to synchronize with the main issue.
    issueManager.updateIssue(auser, targetIssue,  com.atlassian.jira.event.type.EventDispatchOption.DO_NOT_DISPATCH, false)    
}

[Arthur Accioly]

This is giving me the following error:

java.lang.ClassCastException: java.lang.String cannot be cast to java.util.Set

[Arthur Accioly]

Looks like this code can make it work, but now I'm having the "Labels" fields from the target issue receiving my "Affected Version(s)" value. Somebody can help me to find a way of correlating my custom field "Affected Version(s)" in my target issue, instead of the label field?

def labelManager = ComponentManager.getComponentInstanceOfType(LabelManager.class)
def origin = customFieldManager.getCustomFieldObjectByName("Affected Version(s)") 
def labelSet = mainIssue.getCustomFieldValue(origin).toString().tokenize(", ")
labelManager.setLabels(auser,targetIssue.id,labelSet.toSet(),false,false)