org.apache.flink.compiler.dataproperties

Class GlobalProperties

java.lang.Object

org.apache.flink.compiler.dataproperties.GlobalProperties

All Implemented Interfaces:

Cloneable

public class GlobalProperties
extends Object
implements Cloneable

This class represents global properties of the data at a certain point in the plan. Global properties are properties that describe data across different partitions.

Currently, the properties are the following: A partitioning type (ANY, HASH, RANGE), and EITHER an ordering (for range partitioning) or an FieldSet with the hash partitioning columns.

Constructor Summary

Constructors

Constructor and Description
GlobalProperties() Initializes the global properties with no partitioning.

Method Summary

Modifier and Type	Method and Description
void	addUniqueFieldCombination(FieldSet fields)
void	clearUniqueFieldCombinations()
GlobalProperties	clone()
static GlobalProperties	combine(GlobalProperties gp1, GlobalProperties gp2)
boolean	equals(Object obj)
GlobalProperties	filterByNodesConstantSet(OptimizerNode node, int input) Filters these properties by what can be preserved through the given output contract.
PartitioningProperty	getPartitioning()
FieldList	getPartitioningFields()
Ordering	getPartitioningOrdering()
Set<FieldSet>	getUniqueFieldCombination()
int	hashCode()
boolean	isFullyReplicated()
boolean	isPartitionedOnFields(FieldSet fields)
boolean	isTrivial() Checks, if the properties in this object are trivial, i.e.
boolean	matchesOrderedPartitioning(Ordering o)
void	parameterizeChannel(Channel channel, boolean globalDopChange)
void	reset() This method resets the properties to a state where no properties are given.
void	setAnyPartitioning(FieldList partitionedFields)
void	setForcedRebalanced()
void	setFullyReplicated()
void	setHashPartitioned(FieldList partitionedFields) Sets the partitioning property for the global properties.
void	setRandomDistribution()
void	setRangePartitioned(Ordering ordering)
String	toString()

Methods inherited from class java.lang.Object

finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

GlobalProperties

public GlobalProperties()

Initializes the global properties with no partitioning.

Method Detail

setHashPartitioned

public void setHashPartitioned(FieldList partitionedFields)

Sets the partitioning property for the global properties.

Parameters:

partitionedFields -

setRangePartitioned

public void setRangePartitioned(Ordering ordering)

setAnyPartitioning

public void setAnyPartitioning(FieldList partitionedFields)

setRandomDistribution

public void setRandomDistribution()

setFullyReplicated

public void setFullyReplicated()

setForcedRebalanced

public void setForcedRebalanced()

addUniqueFieldCombination

public void addUniqueFieldCombination(FieldSet fields)

clearUniqueFieldCombinations

public void clearUniqueFieldCombinations()

getUniqueFieldCombination

public Set<FieldSet> getUniqueFieldCombination()

getPartitioningFields

public FieldList getPartitioningFields()

getPartitioningOrdering

public Ordering getPartitioningOrdering()

getPartitioning

public PartitioningProperty getPartitioning()

isPartitionedOnFields

public boolean isPartitionedOnFields(FieldSet fields)

matchesOrderedPartitioning

public boolean matchesOrderedPartitioning(Ordering o)

isFullyReplicated

public boolean isFullyReplicated()

isTrivial

public boolean isTrivial()

Checks, if the properties in this object are trivial, i.e. only standard values.

reset

public void reset()

This method resets the properties to a state where no properties are given.

filterByNodesConstantSet

public GlobalProperties filterByNodesConstantSet(OptimizerNode node,
                                                 int input)

Filters these properties by what can be preserved through the given output contract.

Parameters:

node - The optimizer node.

input - The input of the node to filter against.

Returns:

The adjusted global properties.

parameterizeChannel

public void parameterizeChannel(Channel channel,
                                boolean globalDopChange)

hashCode

public int hashCode()

Overrides:

hashCode in class Object

equals

public boolean equals(Object obj)

Overrides:

equals in class Object

toString

public String toString()

Overrides:

toString in class Object

clone

public GlobalProperties clone()

Overrides:

clone in class Object

combine

public static final GlobalProperties combine(GlobalProperties gp1,
                                             GlobalProperties gp2)