/**
* Create a single request packet for the specified term
* this request has id searchGUID
* */
private G2PacketQ2 CreateRequestPacket(GUID searchGUID, string singleTerm)
{
G2PacketQ2 q2 = new G2PacketQ2(searchGUID); // id of the query
G2PacketDN dn = new G2PacketDN(singleTerm); // terms of the query
q2.AddChild(dn);
q2.FinalizePacket();
return(q2);
}
/**
* Send the request to connected hubs .
* */
private void DispatchRequest(G2PacketQ2 pack)
{
int count = 0;
NodePeer hub = null;
while (count < Settings.PEER_DISPATCH_QUERY)
{
hub = G2Network.Instance.getQueryableHub();
hub.DontQueryBefore(Settings.SEARCH_TIME_OUT_MS);
hub.SendPacket(pack);
G2Log.Write("G2SearchManager : Sent Query " + getTermsByGUID(pack.guid) + " on " + hub.ToString());
count++;
}
}
/**
* Launch a new search on multiple hubs (starting)
* SearchTransaction contains only one keyword
* */
public void NewSearch(SearchTransaction transaction)
{
// register query
GUID searchGUID = GUID.generateGuid();
SearchDB [searchGUID] = transaction;
// creating a new search results object for this transaction, register the event that tell it has fins events and stores it
G2SearchResults results = new G2SearchResults(transaction, searchGUID);
SearchResults[searchGUID] = results;
G2PacketQ2 q2 = CreateRequestPacket(searchGUID, transaction.Keywords[0].KeywordName);
DispatchRequest(q2);
results.StartSearchResult(); // start the threads only after all queries have been sent
// because find new hub can take some time and the search may not last long after
}
