org.apache.flink.streaming.api.functions.aggregation

Class ComparableAggregator<T>

java.lang.Object

org.apache.flink.api.common.functions.AbstractRichFunction

org.apache.flink.api.common.functions.RichReduceFunction<T>

org.apache.flink.streaming.api.functions.aggregation.AggregationFunction<T>

org.apache.flink.streaming.api.functions.aggregation.ComparableAggregator<T>

All Implemented Interfaces:

Serializable, org.apache.flink.api.common.functions.Function, org.apache.flink.api.common.functions.ReduceFunction<T>, org.apache.flink.api.common.functions.RichFunction

public abstract class ComparableAggregator<T>
extends AggregationFunction<T>

See Also:

Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from class org.apache.flink.streaming.api.functions.aggregation.AggregationFunction

AggregationFunction.AggregationType

Field Summary

Fields

Modifier and Type	Field and Description
boolean	byAggregate
Comparator	comparator
boolean	first

Fields inherited from class org.apache.flink.streaming.api.functions.aggregation.AggregationFunction

position

Constructor Summary

Constructors

Constructor and Description
ComparableAggregator(int pos, AggregationFunction.AggregationType aggregationType, boolean first)

Method Summary

Modifier and Type	Method and Description
static <R> AggregationFunction<R>	getAggregator(int positionToAggregate, org.apache.flink.api.common.typeinfo.TypeInformation<R> typeInfo, AggregationFunction.AggregationType aggregationType)
static <R> AggregationFunction<R>	getAggregator(int positionToAggregate, org.apache.flink.api.common.typeinfo.TypeInformation<R> typeInfo, AggregationFunction.AggregationType aggregationType, boolean first)
static <R> AggregationFunction<R>	getAggregator(String field, org.apache.flink.api.common.typeinfo.TypeInformation<R> typeInfo, AggregationFunction.AggregationType aggregationType, boolean first, org.apache.flink.api.common.ExecutionConfig config)

Methods inherited from class org.apache.flink.api.common.functions.RichReduceFunction

reduce

Methods inherited from class org.apache.flink.api.common.functions.AbstractRichFunction

close, getIterationRuntimeContext, getRuntimeContext, open, setRuntimeContext

Methods inherited from class java.lang.Object

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

Field Detail

comparator

public Comparator comparator

byAggregate

public boolean byAggregate

first

public boolean first

Constructor Detail

ComparableAggregator

public ComparableAggregator(int pos,
                            AggregationFunction.AggregationType aggregationType,
                            boolean first)

Method Detail

getAggregator

public static <R> AggregationFunction<R> getAggregator(int positionToAggregate,
                                                       org.apache.flink.api.common.typeinfo.TypeInformation<R> typeInfo,
                                                       AggregationFunction.AggregationType aggregationType)

getAggregator

public static <R> AggregationFunction<R> getAggregator(int positionToAggregate,
                                                       org.apache.flink.api.common.typeinfo.TypeInformation<R> typeInfo,
                                                       AggregationFunction.AggregationType aggregationType,
                                                       boolean first)

getAggregator

public static <R> AggregationFunction<R> getAggregator(String field,
                                                       org.apache.flink.api.common.typeinfo.TypeInformation<R> typeInfo,
                                                       AggregationFunction.AggregationType aggregationType,
                                                       boolean first,
                                                       org.apache.flink.api.common.ExecutionConfig config)