Bulk Update the Value of a Custom Field on Jira Issues

[Drishti Maharaj]

Hi, I see that the following code is available on the Adaptavist library and while it would work for what I am attempting to do, I need some help modifying it.

The idea is to bulk update a custom field called "Created Date & Time" to the created date when a ticker was created.

This field was added as it is used in our Aha Integration so it had to be a custom field. 

This is the code:

import com.atlassian.jira.component.ComponentAccessor
import com.atlassian.jira.issue.ModifiedValue
import com.atlassian.jira.issue.search.SearchProvider
import com.atlassian.jira.issue.util.DefaultIssueChangeHolder
import com.atlassian.jira.jql.parser.JqlQueryParser
import com.atlassian.jira.web.bean.PagerFilter
import com.atlassian.jira.issue.search.SearchQuery

// Issues returned from that JQL will get altered
final searchQuery = "project = TEST"

// The name of the custom field to alter
final customFieldName = "TextFieldA"

// The new value to set
final newValue = "Love Groovy"

(I assume here is where I would need to change it to make sure that the correct value is added but it would need to be Date&Time and a bit unsure of that?)

// Get the custom field
def customField = ComponentAccessor.customFieldManager.customFieldObjects.findByName(customFieldName)
assert customField : "Could not find custom field with name ${customFieldName}"

// Get some components
def jqlQueryParser = ComponentAccessor.getComponent(JqlQueryParser)
def searchProvider = ComponentAccessor.getComponent(SearchProvider)
def issueManager = ComponentAccessor.issueManager
def user = ComponentAccessor.jiraAuthenticationContext.loggedInUser

// Perform the JQL search
def query = jqlQueryParser.parseQuery(searchQuery)
def searchResults = searchProvider.search(SearchQuery.create(query, user), PagerFilter.unlimitedFilter)

// Iterate all results to update each issue
searchResults.results.each { documentIssue ->
def key = documentIssue.document.fields.find { it.name() == "key" }.stringValue()
def issue = issueManager.getIssueObject(key)
customField.updateValue(null, issue, new ModifiedValue(issue.getCustomFieldValue(customField), newValue), new DefaultIssueChangeHolder())
}