}
}
if (wi.getType() == QUERY)
{
QueryWorkItem item = (QueryWorkItem)wi;
QmfQuery query = item.getQmfQuery();
System.out.println("Query User ID = " + item.getUserId());
if (query.getObjectId() != null)
{
// Look up a QmfAgentData object by the ObjectId obtained from the query
ObjectId objectId = query.getObjectId();
QmfAgentData object = _objectIndex.get(objectId);
if (object != null && !object.isDeleted())
{
_agent.queryResponse(item.getHandle(), object);
}
_agent.queryComplete(item.getHandle(), 0);
}
else
{
// Look up QmfAgentData objects by the SchemaClassId obtained from the query
// This is implemented by a linear search and allows searches with only the className specified.
// Linear searches clearly don't scale brilliantly, but the number of QmfAgentData objects managed
// by an Agent is generally fairly small, so it should be OK. Note that this is the same approach
// taken by the C++ broker ManagementAgent, so if it's a problem here........
for (QmfAgentData object : _objectIndex.values())
{
if (!object.isDeleted() && query.evaluate(object))
{
_agent.queryResponse(item.getHandle(), object);
}
}
_agent.queryComplete(item.getHandle(), 0);
}
}
if (wi.getType() == SUBSCRIBE_REQUEST)
{
SubscribeRequestWorkItem item = (SubscribeRequestWorkItem)wi;
SubscriptionParams params = item.getSubscriptionParams();
Handle handle = item.getHandle();
System.out.println("Subscribe Request User ID = " + params.getUserId());
try
{
Subscription subscription = new Subscription(this, params);
_subscriptions.put(subscription.getSubscriptionId(), subscription);
_timer.schedule(subscription, 0, params.getPublishInterval());
if (subscription == null)
{
System.out.println("Requested Subscription has already expired or been cancelled");
QmfData error = new QmfData();
error.setValue("error_text", "Requested Subscription has already expired or been cancelled");
_agent.subscriptionResponse(handle, subscription.getConsoleHandle(), null, 0, 0, error);
}
else
{
_agent.subscriptionResponse(handle, subscription.getConsoleHandle(), subscription.getSubscriptionId(),
subscription.getDuration(), subscription.getInterval(), null);
}
}
catch (QmfException qmfe)
{
_agent.raiseException(handle, "Subscribe Request failed, invalid Query: " + qmfe.getMessage());
}
}
if (wi.getType() == RESUBSCRIBE_REQUEST)
{
ResubscribeRequestWorkItem item = (ResubscribeRequestWorkItem)wi;
ResubscribeParams params = item.getResubscribeParams();
Handle handle = item.getHandle();
System.out.println("Resubscribe Request User ID = " + params.getUserId());
String subscriptionId = params.getSubscriptionId();
Subscription subscription = _subscriptions.get(subscriptionId);
if (subscription != null)
{
subscription.refresh(params);
_agent.subscriptionResponse(handle, subscription.getConsoleHandle(), subscription.getSubscriptionId(),
subscription.getDuration(), subscription.getInterval(), null);
}
else
{
System.out.println("Requested Subscription has already expired or been cancelled");
QmfData error = new QmfData();
error.setValue("error_text", "Requested Subscription has already expired or been cancelled");
_agent.subscriptionResponse(handle, subscription.getConsoleHandle(), null, 0, 0, error);
}
}
if (wi.getType() == UNSUBSCRIBE_REQUEST)
{
UnsubscribeRequestWorkItem item = (UnsubscribeRequestWorkItem)wi;
String subscriptionId = item.getSubscriptionId();
System.out.println("Received cancellation request for " + subscriptionId);
Subscription subscription = _subscriptions.get(subscriptionId);
if (subscription != null)
{
subscription.cancel();