/// <summary>
/// topk 目前的names.count = 1 主要在服务器端未实现多值比较
/// </summary>
public List <List <long> > topK(int k, string[] names)
{
if (k == 0)
{
throw new Exception("k不能为0");
}
List <int> pos = new List <int>();
foreach (var name in names)
{
pos.Add(nametopos(name));
}
TopKMessageWriter msg = new TopKMessageWriter(k, pos, this.cellIds);
List <List <long> > r = Global.CloudStorage.TopKFromClientToDatabaseProxy(0, msg).celllids;
return(r);
}
public override void TopKFromClientHandler(TopKMessageReader request, TopKResponceWriter response)
{
idDict.Clear();
values.Clear();
List <List <List <long> > > classify = Classify(request.celllids, request.cond);
for (int i = 0; i < Global.ServerCount; i++)
{
TopKMessageWriter msg = new TopKMessageWriter(request.k, request.cond, classify[i]);
Global.CloudStorage.TopKFromProxyToDatabaseServer(i, msg);
}
sem.WaitOne();
int k = request.k;
int[] stage = new int[k];
for (int i = 0; i < k; i++)
{
stage[i] = 0;
}
response.celllids = new List <List <long> >();
for (int i = 0; i < k; i++)
{
int max = values[0][stage[0]];
int maxserver = 0;
for (int j = 1; j < Global.ServerCount; j++)
{
if (max < values[j][stage[j]])
{
max = values[j][stage[j]];
maxserver = j;
}
}
response.celllids.Add(idDict[maxserver][stage[maxserver]]);
stage[maxserver]++;
}
}
