As per my project requirement i have changes the custom field from text to Labels, While i am updating the values of custom filed i am getting groovy script error. Please suggest what could be the approch.
Error Stack :
java.lang.ClassCastException: java.lang.String cannot be cast to java.util.Set
CustomField cfEcpId = cfManager.getCustomFieldObjectsByName("ECP ID Label").first();
cf.updateValue(fieldLayoutItem, issue, new ModifiedValue(currentValue, newValue), new DefaultIssueChangeHolder());
Ah, good, that's the right way to approach it.
The problem you have is that your script is not pushing the right type of data into the label field.
A string field is a string of letters. A label field is a collection of individual labels, each of which holds a string that is the name of the label.
In your code, the "newValue" going into the changeHolder needs to be a collection of labels. You'll need to read out the existing labels as a collection, then take the string you want to add to them, convert it into a set of labels you add to that collection, and post that back.
@Adhikari Jitendra Kumar DasI am interested in getting the code for this... I'm assuming you are running it in the Script Console?
I had come up with a solution that will effectively accomplish my intent over time with this post: https://community.atlassian.com/t5/Jira-Core-questions/ScriptRunner-Listener-Copy-free-text-custom-field-value-into-a/qaq-p/743690
However, being able to copy the free text values over to the new label field without having to wait for user-generated events would be amazing as some of our issues may never be edited.
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