/**
* Indicates whether or not the cache entry is stale.
*
* @param cacheEntry The cache entry to test the freshness of.
* @param refreshPeriod The maximum allowable age of the entry, in seconds.
* @param cronExpiry A cron expression specifying absolute date(s) and/or time(s) that the cache
* entry should expire at. If the cache entry was refreshed prior to the most recent match for
* the cron expression, the entry will be considered stale.
* @return <code>true</code> if the entry is stale, <code>false</code> otherwise.
*/
protected boolean isStale(CacheEntry cacheEntry, int refreshPeriod, String cronExpiry) {
boolean result = cacheEntry.needsRefresh(refreshPeriod) || isFlushed(cacheEntry);
if ((!result) && (cronExpiry != null) && (cronExpiry.length() > 0)) {
try {
FastCronParser parser = new FastCronParser(cronExpiry);
result = result || parser.hasMoreRecentMatch(cacheEntry.getLastUpdate());
} catch (ParseException e) {
log.warn(e);
}
}
return result;
}
/**
* Flushes all unexpired objects that belong to the supplied group. On completion this method
* fires a <tt>CacheEntryEventType.GROUP_FLUSHED</tt> event.
*
* @param group The group to flush
* @param origin The origin of this flush event (optional)
*/
public void flushGroup(String group, String origin) {
// Flush all objects in the group
Set groupEntries = cacheMap.getGroup(group);
if (groupEntries != null) {
Iterator itr = groupEntries.iterator();
String key;
CacheEntry entry;
while (itr.hasNext()) {
key = (String) itr.next();
entry = (CacheEntry) cacheMap.get(key);
if ((entry != null) && !entry.needsRefresh(CacheEntry.INDEFINITE_EXPIRY)) {
flushEntry(entry, NESTED_EVENT);
}
}
}
if (listenerList.getListenerCount() > 0) {
dispatchCacheGroupEvent(CacheEntryEventType.GROUP_FLUSHED, group, origin);
}
}