net.engio.pips.data.utils

Class TimeBasedAggregator<V extends Number>

java.lang.Object

net.engio.pips.data.utils.TimeBasedAggregator<V>

public class TimeBasedAggregator<V extends Number>
extends Object

Time based aggregation allows to combine multiple data points with the same time stamp into an aggregated value (of the same time stamp). The aggregator can be used to fold all collected data points into a new IDataCollector such that this data collector contains one (aggregated) data point for each set of data points sharing a common time stamp.

Author:

bennidi Date: 2/25/14

Constructor Summary

Constructors

Constructor and Description
TimeBasedAggregator()

Method Summary

Modifier and Type	Method and Description
TimeBasedAggregator<V>	consume(IDataCollector<V>... collectors)
TimeBasedAggregator<V>	consume(IDataCollector<V> collector)
TimeBasedAggregator<V>	consume(List<IDataCollector<V>> collectors)
<A> IDataCollector<A>	fold(IAggregate<V,A> aggregator)
<A> IDataCollector<A>	fold(IAggregate<V,A> aggregator, IDataCollector<A> target) Fold multiple data collectors into one, using the aggregator function.
void	receive(DataPoint<V> datapoint)

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

TimeBasedAggregator

public TimeBasedAggregator()

Method Detail

receive

public void receive(DataPoint<V> datapoint)

consume

public TimeBasedAggregator<V> consume(IDataCollector<V> collector)

consume

public TimeBasedAggregator<V> consume(IDataCollector<V>... collectors)

consume

public TimeBasedAggregator<V> consume(List<IDataCollector<V>> collectors)

fold

public <A> IDataCollector<A> fold(IAggregate<V,A> aggregator,
                                  IDataCollector<A> target)

Fold multiple data collectors into one, using the aggregator function. Each data point of the generated data collector is the aggregated value of a corresponding source data collector, maintained by this aggregator.

Type Parameters:

A -

Parameters:

aggregator -

Returns:

fold

public <A> IDataCollector<A> fold(IAggregate<V,A> aggregator)