Package org.apache.flink.runtime.iterative.event

Class IterationEventWithAggregators

java.lang.Object

org.apache.flink.runtime.event.AbstractEvent

org.apache.flink.runtime.event.TaskEvent

org.apache.flink.runtime.iterative.event.IterationEventWithAggregators

All Implemented Interfaces:

IOReadableWritable

Direct Known Subclasses:

AllWorkersDoneEvent, WorkerDoneEvent

public abstract class IterationEventWithAggregators
extends TaskEvent

Base class for iteration TaskEvent transmitting operator aggregators.

Field Summary

Fields

Modifier and Type	Field	Description
protected static String[]	NO_STRINGS
protected static Value[]	NO_VALUES

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	IterationEventWithAggregators()
protected	IterationEventWithAggregators(String aggregatorName, Value aggregate)
protected	IterationEventWithAggregators(Map<String,Aggregator<?>> aggregators)

Method Summary

Modifier and Type	Method	Description
Value[]	getAggregates(ClassLoader classResolver)
String[]	getAggregatorNames()
void	read(DataInputView in)	Reads the object's internal data from the given data input view.
void	write(DataOutputView out)	Writes the object's internal data to the given data output view.

Methods inherited from class java.lang.Object

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

Field Detail

NO_STRINGS

protected static final String[] NO_STRINGS

NO_VALUES

protected static final Value[] NO_VALUES

Constructor Detail

IterationEventWithAggregators

protected IterationEventWithAggregators()

IterationEventWithAggregators

protected IterationEventWithAggregators(String aggregatorName,
                                        Value aggregate)

IterationEventWithAggregators

protected IterationEventWithAggregators(Map<String,Aggregator<?>> aggregators)

Method Detail

getAggregatorNames

public String[] getAggregatorNames()

getAggregates

public Value[] getAggregates(ClassLoader classResolver)

write

public void write(DataOutputView out)
           throws IOException

Description copied from interface: IOReadableWritable

Writes the object's internal data to the given data output view.

Parameters:

out - the output view to receive the data.

Throws:

IOException - thrown if any error occurs while writing to the output stream

read

public void read(DataInputView in)
          throws IOException

Description copied from interface: IOReadableWritable

Reads the object's internal data from the given data input view.

Parameters:

in - the input view to read the data from

Throws:

IOException - thrown if any error occurs while reading from the input stream