public void put(Object[] lookupKeys, EventTable rows) {
Object key = DataCacheUtil.getLookupKey(lookupKeys);
long now = schedulingService.getTime();
Item item = new Item(rows, now);
cache.put(key, item);
if (!isScheduled) {
EPStatementHandleCallback callback =
new EPStatementHandleCallback(epStatementAgentInstanceHandle, this);
schedulingService.add(purgeIntervalMSec, callback, scheduleSlot);
isScheduled = true;
}
}
public void scheduledTrigger(ExtensionServicesContext extensionServicesContext) {
// purge expired
long now = schedulingService.getTime();
Iterator<Object> it = cache.keySet().iterator();
for (; it.hasNext(); ) {
Item item = cache.get(it.next());
if ((now - item.getTime()) > maxAgeMSec) {
it.remove();
}
}
isScheduled = false;
}
public EventTable getCached(Object[] lookupKeys) {
Object key = DataCacheUtil.getLookupKey(lookupKeys);
Item item = cache.get(key);
if (item == null) {
return null;
}
long now = schedulingService.getTime();
if ((now - item.getTime()) > maxAgeMSec) {
cache.remove(key);
return null;
}
return item.getData();
}