/// <summary>
/// Retrieves the first tuple from the space, matching the specified pattern.The operation is non-blocking.The operation will return null if no elements match.
/// </summary>
public ITuple QueryP(params object[] pattern)
{
QueryPRequest request = new QueryPRequest(this.GetSource(), this.GetSessionId(), this.connectionString.Target, pattern);
QueryPResponse response = this.GetMode()?.PerformRequest <QueryPResponse>(request);
return(response.Result == null ? null : this.tupleFactory.Create(response.Result));
}
private IMessage PerformQueryP(IMessage request)
{
ISpace ts = this.repository.GetSpace(request.Target);
if (ts != null)
{
QueryPRequest getReq = (QueryPRequest)request;
ITuple tuple = ts.QueryP(new Pattern(getReq.Template));
return(new QueryPResponse(request.Source, request.Session, request.Target, tuple?.Fields ?? null, StatusCode.OK, StatusMessage.OK));
}
return(new QueryPResponse(request.Source, request.Session, request.Target, null, StatusCode.NOT_FOUND, StatusMessage.NOT_FOUND));
}
