org.apache.flink.compiler.dag

Class CrossNode

java.lang.Object

org.apache.flink.compiler.dag.OptimizerNode

org.apache.flink.compiler.dag.TwoInputNode

org.apache.flink.compiler.dag.CrossNode

All Implemented Interfaces:

EstimateProvider, DumpableNode<OptimizerNode>, Visitable<OptimizerNode>

public class CrossNode
extends TwoInputNode

The Optimizer representation of a Cross (Cartesian product) operator.

Nested Class Summary

Nested classes/interfaces inherited from class org.apache.flink.compiler.dag.OptimizerNode

OptimizerNode.UnclosedBranchDescriptor

Field Summary

Fields inherited from class org.apache.flink.compiler.dag.TwoInputNode

input1, input2, keys1, keys2

Fields inherited from class org.apache.flink.compiler.dag.OptimizerNode

cachedPlans, closedBranchingNodes, costWeight, estimatedNumRecords, estimatedOutputSize, hereJoinedBranches, id, MAX_DYNAMIC_PATH_COST_WEIGHT, onDynamicPath, openBranches, remappedKeys, uniqueFields

Constructor Summary

Constructors

Constructor and Description
CrossNode(CrossOperatorBase<?,?,?,?> operation) Creates a new CrossNode for the given operator.

Method Summary

Modifier and Type	Method and Description
protected void	computeOperatorSpecificDefaultEstimates(DataStatistics statistics) We assume that the cardinality is the product of the input cardinalities and that the result width is the sum of the input widths.
String	getName() Gets the name of this node.
CrossOperatorBase<?,?,?,?>	getPactContract() Gets the object that specifically describes the contract of this node.
protected List<OperatorDescriptorDual>	getPossibleProperties()

Methods inherited from class org.apache.flink.compiler.dag.TwoInputNode

accept, addLocalCandidates, computeInterestingPropertiesForInputs, computeUnclosedBranchStack, getAlternativePlans, getFirstIncomingConnection, getFirstPredecessorNode, getIncomingConnections, getInputKeySet, getSecondIncomingConnection, getSecondPredecessorNode, haveValidOutputEstimates, instantiate, isFieldConstant, placePipelineBreakersIfNecessary, setInput

Methods inherited from class org.apache.flink.compiler.dag.OptimizerNode

addBroadcastConnection, addClosedBranch, addClosedBranches, addOutgoingConnection, areBranchCompatible, clearInterestingProperties, computeOutputEstimates, computeUnclosedBranchStackForBroadcastInputs, computeUnionOfInterestingPropertiesFromSuccessors, createUniqueFieldsForNode, getBranchesForParent, getBroadcastConnectionNames, getBroadcastConnections, getClosedBranchingNodes, getConstantKeySet, getCostWeight, getDegreeOfParallelism, getDumpableInputs, getEstimatedAvgWidthPerOutputRecord, getEstimatedNumRecords, getEstimatedOutputSize, getId, getInterestingProperties, getMaxDepth, getMinimalMemoryAcrossAllSubTasks, getOpenBranches, getOptimizerNode, getOutgoingConnections, getPlanNode, getPredecessors, getRemappedKeys, getUniqueFields, hasUnclosedBranches, haveAllOutputConnectionInterestingProperties, identifyDynamicPath, initId, isBranching, isOnDynamicPath, mergeLists, prunePlanAlternatives, prunePlanAlternativesWithCommonBranching, readStubAnnotations, readUniqueFieldsAnnotation, removeClosedBranches, setBroadcastInputs, setDegreeOfParallelism, setEstimatedNumRecords, setEstimatedOutputSize, toString

Methods inherited from class java.lang.Object

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

Constructor Detail

CrossNode

public CrossNode(CrossOperatorBase<?,?,?,?> operation)

Creates a new CrossNode for the given operator.

Parameters:

operation - The Cross operator object.

Method Detail

getPactContract

public CrossOperatorBase<?,?,?,?> getPactContract()

Description copied from class: OptimizerNode

Gets the object that specifically describes the contract of this node.

Overrides:

getPactContract in class TwoInputNode

Returns:

This node's contract.

getName

public String getName()

Description copied from class: OptimizerNode

Gets the name of this node. This returns either the name of the PACT, or a string marking the node as a data source or a data sink.

Specified by:

getName in class OptimizerNode

Returns:

The node name.

getPossibleProperties

protected List<OperatorDescriptorDual> getPossibleProperties()

Specified by:

getPossibleProperties in class TwoInputNode

computeOperatorSpecificDefaultEstimates

protected void computeOperatorSpecificDefaultEstimates(DataStatistics statistics)

We assume that the cardinality is the product of the input cardinalities and that the result width is the sum of the input widths.

Specified by:

computeOperatorSpecificDefaultEstimates in class OptimizerNode

Parameters:

statistics - The statistics object to optionally access.