org.apache.flink.streaming.api.operators.windowing

Class GroupedActiveDiscretizer<IN>

java.lang.Object

org.apache.flink.streaming.api.operators.AbstractStreamOperator<WindowEvent<IN>>

org.apache.flink.streaming.api.operators.windowing.StreamDiscretizer<IN>

org.apache.flink.streaming.api.operators.windowing.GroupedStreamDiscretizer<IN>

org.apache.flink.streaming.api.operators.windowing.GroupedActiveDiscretizer<IN>

All Implemented Interfaces:

Serializable, OneInputStreamOperator<IN,WindowEvent<IN>>, StreamOperator<WindowEvent<IN>>

public class GroupedActiveDiscretizer<IN>
extends GroupedStreamDiscretizer<IN>

See Also:

Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from interface org.apache.flink.streaming.api.operators.StreamOperator

StreamOperator.ChainingStrategy

Field Summary

Fields inherited from class org.apache.flink.streaming.api.operators.windowing.GroupedStreamDiscretizer

evictionPolicy, groupedDiscretizers, keySelector, parameters, triggerPolicy

Fields inherited from class org.apache.flink.streaming.api.operators.windowing.StreamDiscretizer

windowEvent

Fields inherited from class org.apache.flink.streaming.api.operators.AbstractStreamOperator

chainingStrategy, executionConfig, inputCopyDisabled, output, runtimeContext

Constructor Summary

Constructors

Constructor and Description
GroupedActiveDiscretizer(org.apache.flink.api.java.functions.KeySelector<IN,?> keySelector, CentralActiveTrigger<IN> triggerPolicy, CloneableEvictionPolicy<IN> evictionPolicy)

Method Summary

Modifier and Type	Method and Description
void	close() This method is called after no more elements for can arrive for processing.
protected StreamDiscretizer<IN>	makeNewGroup(Object key) This method creates a new group.
void	open(org.apache.flink.configuration.Configuration parameters) This method is called before any elements are processed.
void	processElement(IN element)

Methods inherited from class org.apache.flink.streaming.api.operators.windowing.GroupedStreamDiscretizer

equals, toString

Methods inherited from class org.apache.flink.streaming.api.operators.windowing.StreamDiscretizer

emitWindow, getEviction, getTrigger, processRealElement, triggerOnFakeElement

Methods inherited from class org.apache.flink.streaming.api.operators.AbstractStreamOperator

disableInputCopy, getChainingStrategy, isInputCopyingDisabled, setChainingStrategy, setup

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.flink.streaming.api.operators.StreamOperator

getChainingStrategy, isInputCopyingDisabled, setChainingStrategy, setup

Constructor Detail

GroupedActiveDiscretizer

public GroupedActiveDiscretizer(org.apache.flink.api.java.functions.KeySelector<IN,?> keySelector,
                                CentralActiveTrigger<IN> triggerPolicy,
                                CloneableEvictionPolicy<IN> evictionPolicy)

Method Detail

makeNewGroup

protected StreamDiscretizer<IN> makeNewGroup(Object key)
                                      throws Exception

Description copied from class: GroupedStreamDiscretizer

This method creates a new group. The method gets called in case an element arrives which has a key which was not seen before. The method created a nested StreamDiscretizer and therefore created clones of all distributed trigger and eviction policies.

Overrides:

makeNewGroup in class GroupedStreamDiscretizer<IN>

Parameters:

key - The key of the new group.

Throws:

Exception

processElement

public void processElement(IN element)
                    throws Exception

Specified by:

processElement in interface OneInputStreamOperator<IN,WindowEvent<IN>>

Overrides:

processElement in class GroupedStreamDiscretizer<IN>

Throws:

Exception

open

public void open(org.apache.flink.configuration.Configuration parameters)
          throws Exception

Description copied from interface: StreamOperator

This method is called before any elements are processed.

Specified by:

open in interface StreamOperator<WindowEvent<IN>>

Overrides:

open in class StreamDiscretizer<IN>

Throws:

Exception

close

public void close()
           throws Exception

Description copied from interface: StreamOperator

This method is called after no more elements for can arrive for processing.

Specified by:

close in interface StreamOperator<WindowEvent<IN>>

Overrides:

close in class GroupedStreamDiscretizer<IN>

Throws:

Exception