if (pcms == null || pcms.length == 0) {
return getUserCacheOfTheClass(fieldNames);
}
ArrayList ucs = null;
//get the user cache of this class
UserCache uc = getUserCacheOfTheClass(fieldNames);
//if it not null, add it to the list
if(uc != null) {
if (ucs == null) {
ucs = new ArrayList();
}