if (cacheGroupsProviderParam != null) {
setCacheGroupsProvider(cacheGroupsProviderParam);
}
// filter parameter EntryRefreshPolicy
EntryRefreshPolicy expiresRefreshPolicyParam = (EntryRefreshPolicy)instantiateFromInitParam("EntryRefreshPolicy", EntryRefreshPolicy.class, ExpiresRefreshPolicy.class.getName());
if (expiresRefreshPolicyParam != null) {
setExpiresRefreshPolicy(expiresRefreshPolicyParam);
} else {
// setting the refresh period for this cache filter
setExpiresRefreshPolicy(new ExpiresRefreshPolicy(time));