Package org.apache.wayang.java.operators

Class JavaLocalCallbackSink<T extends Serializable>

java.lang.Object

org.apache.wayang.core.plan.wayangplan.OperatorBase

org.apache.wayang.core.plan.wayangplan.UnarySink<T>

org.apache.wayang.basic.operators.LocalCallbackSink<T>

org.apache.wayang.java.operators.JavaLocalCallbackSink<T>

All Implemented Interfaces:

Serializable, ActualOperator, ElementaryOperator, ExecutionOperator, Operator, JavaExecutionOperator

public class JavaLocalCallbackSink<T extends Serializable>
extends LocalCallbackSink<T>
implements JavaExecutionOperator

Implementation of the LocalCallbackSink operator for the Java platform.

See Also:

• Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from class org.apache.wayang.core.plan.wayangplan.OperatorBase

OperatorBase.GsonSerializer

Field Summary

Fields inherited from class org.apache.wayang.basic.operators.LocalCallbackSink

callback, callbackDescriptor, collector

Fields inherited from class org.apache.wayang.core.plan.wayangplan.OperatorBase

inputSlots, outputSlots, STANDARD_OPERATOR_ARGS

Fields inherited from interface org.apache.wayang.core.plan.wayangplan.Operator

FIRST_EPOCH

Constructor Summary

Constructors

Constructor	Description
JavaLocalCallbackSink(Consumer<T> callback, DataSetType type)	Creates a new instance.
JavaLocalCallbackSink(LocalCallbackSink<T> that)	Copies an instance (exclusive of broadcasts).

Method Summary

Modifier and Type	Method	Description
protected ExecutionOperator	createCopy()
Tuple<Collection<ExecutionLineageNode>,Collection<ChannelInstance>>	evaluate(ChannelInstance[] inputs, ChannelInstance[] outputs, JavaExecutor executor, OptimizationContext.OperatorContext operatorContext)	Evaluates this operator.
String	getLoadProfileEstimatorConfigurationKey()
List<ChannelDescriptor>	getSupportedInputChannels(int index)	Display the supported Channels for a certain InputSlot.
List<ChannelDescriptor>	getSupportedOutputChannels(int index)	Display the supported Channels for a certain OutputSlot.

Methods inherited from class org.apache.wayang.basic.operators.LocalCallbackSink

createCardinalityEstimator, createCollectingSink, createCollectingSink, createStdoutSink, createStdoutSink, getCallback, getCallbackDescriptor, setCollector

Methods inherited from class org.apache.wayang.core.plan.wayangplan.UnarySink

getInput, getType

Methods inherited from class org.apache.wayang.core.plan.wayangplan.OperatorBase

accept, addBroadcastInput, addTargetPlatform, at, collectMappedInputSlots, collectMappedOutputSlots, copy, getAllInputs, getAllOutputs, getCardinalityEstimator, getContainer, getEpoch, getName, getOriginal, getSimpleClassName, getTargetPlatforms, isAuxiliary, isSupportingBroadcastInputs, propagateInputCardinality, propagateOutputCardinality, setAuxiliary, setCardinalityEstimator, setContainer, setEpoch, setName, toString

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.wayang.core.plan.wayangplan.ActualOperator

accept

Methods inherited from interface org.apache.wayang.core.plan.wayangplan.ElementaryOperator

createCardinalityEstimator, getCardinalityEstimator, isAuxiliary, setAuxiliary, setCardinalityEstimator

Methods inherited from interface org.apache.wayang.core.plan.wayangplan.ExecutionOperator

copy, createLoadProfileEstimator, createOutputChannelInstances, getLimitBaseKey, getLoadProfileEstimatorConfigurationKeys, getOriginal, getOutputChannelDescriptor, isFiltered

Methods inherited from interface org.apache.wayang.java.operators.JavaExecutionOperator

getPlatform

Methods inherited from interface org.apache.wayang.core.plan.wayangplan.Operator

addBroadcastInput, addTargetPlatform, broadcastTo, broadcastTo, collectMappedInputSlots, collectMappedOutputSlots, connectTo, connectTo, getAllInputs, getAllOutputs, getCardinalityPusher, getContainer, getEffectiveOccupant, getEffectiveOccupant, getEpoch, getEstimationContextProperties, getForwards, getInnermostLoop, getInput, getInput, getLoopStack, getName, getNumBroadcastInputs, getNumInputs, getNumOutputs, getNumRegularInputs, getOuterInputSlot, getOutermostInputSlot, getOutermostOutputSlots, getOutput, getOutput, getParent, getTargetPlatforms, isAlternative, isConversion, isElementary, isExecutionOperator, isFeedbackInput, isFeedforwardOutput, isLoopHead, isLoopSubplan, isOwnerOf, isReading, isSink, isSource, isSubplan, isSupportingBroadcastInputs, isUnconnected, propagateInputCardinality, propagateOutputCardinality, propagateOutputCardinality, replaceWith, setContainer, setEpoch, setInput, setName, setOutput

Constructor Details

JavaLocalCallbackSink

public JavaLocalCallbackSink(Consumer<T> callback,
 DataSetType type)

Creates a new instance.

Parameters:

callback - callback that is executed locally for each incoming data unit

type - type of the incoming elements

JavaLocalCallbackSink

public JavaLocalCallbackSink(LocalCallbackSink<T> that)

Copies an instance (exclusive of broadcasts).

Parameters:

that - that should be copied

Method Details

evaluate

public Tuple<Collection<ExecutionLineageNode>,Collection<ChannelInstance>> evaluate(ChannelInstance[] inputs,
 ChannelInstance[] outputs,
 JavaExecutor executor,
 OptimizationContext.OperatorContext operatorContext)

Description copied from interface: JavaExecutionOperator

Evaluates this operator. Takes a set of Java Streams according to the operator inputs and produces a set of Streams according to the operator outputs -- unless the operator is a sink, then it triggers execution.

In addition, this method should give feedback of what this instance was doing by wiring the LazyExecutionLineageNodes of input and ouput ChannelInstances and providing a Collection of executed OptimizationContext.OperatorContexts.

Specified by:

evaluate in interface JavaExecutionOperator

Parameters:

inputs - ChannelInstances that satisfy the inputs of this operator

outputs - ChannelInstances that collect the outputs of this operator

executor - that executes this instance

operatorContext - optimization information for this instance

Returns:

Collections of what has been executed and produced

createCopy

protected ExecutionOperator createCopy()

Overrides:

createCopy in class OperatorBase

getLoadProfileEstimatorConfigurationKey

public String getLoadProfileEstimatorConfigurationKey()

Specified by:

getLoadProfileEstimatorConfigurationKey in interface ExecutionOperator

getSupportedInputChannels

public List<ChannelDescriptor> getSupportedInputChannels(int index)

Description copied from interface: ExecutionOperator

Display the supported Channels for a certain InputSlot.

Specified by:

getSupportedInputChannels in interface ExecutionOperator

Parameters:

index - the index of the InputSlot

Returns:

an List of Channels' Classes, ordered by their preference of use

getSupportedOutputChannels

public List<ChannelDescriptor> getSupportedOutputChannels(int index)

Description copied from interface: ExecutionOperator

Display the supported Channels for a certain OutputSlot.

Specified by:

getSupportedOutputChannels in interface ExecutionOperator

Parameters:

index - the index of the OutputSlot

Returns:

an List of Channels' Classes, ordered by their preference of use

See Also:

• ExecutionOperator.getOutputChannelDescriptor(int)