/// <summary>
/// Initialize result set with underlying producer/consumer queue.
/// </summary>
public ResultSet(QueryAggregateExecutor executor, int capacity, CancellationToken cancelToken)
{
this.executor = executor;
this.queue = new BlockingCollection<object>(capacity);
this.cancelToken = cancelToken;
}
/// <summary>
/// Initialize result set with underlying producer/consumer queue.
/// </summary>
public ResultSet(QueryAggregateExecutor executor, int capacity, CancellationToken cancelToken)
{
this.executor = executor;
this.queue = new BlockingCollection <object>(capacity);
this.cancelToken = cancelToken;
}
/// <summary>
/// Execute query, apply statement's aggregation function, and return result iterator.
/// The aggregation function should be initialized via the statement's SetAggregateFunction()
/// and should be located in a Lua resource file located in an assembly.
/// <para>
/// The query executor puts results on a queue in separate threads. The calling thread
/// concurrently pops results off the queue through the ResultSet iterator.
/// The aggregation function is called on both server and client (final reduce).
/// Therefore, the Lua script file must also reside on both server and client.
/// </para>
/// <para>
/// This method is only supported by Aerospike 3 servers.
/// </para>
/// </summary>
/// <param name="policy">generic configuration parameters, pass in null for defaults</param>
/// <param name="statement">database query command with aggregate functions already initialized by SetAggregateFunction()</param>
/// <exception cref="AerospikeException">if query fails</exception>
public ResultSet QueryAggregate(QueryPolicy policy, Statement statement)
{
if (policy == null)
{
policy = queryPolicyDefault;
}
statement.Prepare(true);
QueryAggregateExecutor executor = new QueryAggregateExecutor(cluster, policy, statement);
executor.Execute();
return executor.ResultSet;
}