com.atlassian.jira.issue.comparator
Classes 
ConstantsComparator
CustomFieldComparator
IssueCustomFieldComparator
IssueLongFieldComparator
IssueTypeComparator
KeyComparator
NullComparator
NullFieldComparator
PriorityComparator
ResolutionComparator
SecurityComparator
SortUtils
UserComparator