Groovy - For current issue, possible to get all fields with name starting with string?

[Rune Hellem]

Version

Jira v8.4.2, Scriptrunner 6.0.2-p5 

What I want to do

In our project we have a set of  issuetypes which can be both task or subtask, sharing the same screens when doing create/edit/view. If the issutype = subtask then we do not want to show some 'change management' fields. All field names starts with 'CM'. To avoid the need to update the script if adding yet another CM-field, I have tried to figure out if I can but I could not find any getFields... - only getField...

But maybe there is a reason?

While preparing the question I realize that it might be a very good reason for this not being a clever thing to so - could it have major impact on performance if needed to loop all fields every time an issue is being rendered?

[Payne · Accepted solution]

This may be of use to you: https://docs.atlassian.com/software/jira/docs/api/7.2.0/com/atlassian/jira/issue/CustomFieldManager.html#getCustomFieldObjects-java.lang.Long-java.lang.String-

Here's a sample implementation:

CustomFieldManager customFieldManager = ComponentAccessor.getCustomFieldManager()
List<CustomField> fields = customFieldManager.getCustomFieldObjects(10800,"Request")
fields.each{field ->
  if(field.fieldName[0..1] == "CM"){
    //Do Stuff
  }
}