String getChanges(AbstractBuild r) {
if (!r.hasChangeSetComputed()) {
logger.info("No change set computed...");
return null;
}
ChangeLogSet changeSet = r.getChangeSet();
List<Entry> entries = new LinkedList<Entry>();
Set<AffectedFile> files = new HashSet<AffectedFile>();
for (Object o : changeSet.getItems()) {
Entry entry = (Entry) o;
logger.info("Entry " + o);
entries.add(entry);
files.addAll(entry.getAffectedFiles());
}