Module com.darkcollective.relix.plan

Package com.darkcollective.relix.plan

Record Class PhysicalNode.Cluster

java.lang.Object

java.lang.Record

com.darkcollective.relix.plan.PhysicalNode.Cluster

All Implemented Interfaces:

PhysicalNode

Enclosing interface:

PhysicalNode

public static record PhysicalNode.Cluster(Schema schema, String fromColumn, String toColumn, String labelColumn, PhysicalNode input)
extends Record
implements PhysicalNode

Connected-components labelling (CLUSTER) of the input edge relation, read as undirected edges over fromColumn()/toColumn(). Emits one row per distinct node: the node identifier plus its labelColumn() component id (a dense 1-based NUMBER, canonical by the component's minimum node id). Evaluated in-engine by an undirected union-find over the whole edge set; never pushed to a source.

Nested Class Summary

Nested classes/interfaces inherited from interface com.darkcollective.relix.plan.PhysicalNode

PhysicalNode.Aggregate, PhysicalNode.AsOfJoin, PhysicalNode.BernoulliSample, PhysicalNode.BuildSide, PhysicalNode.Closure, PhysicalNode.Cluster, PhysicalNode.ConstructiveCover, PhysicalNode.Cover, PhysicalNode.Distinct, PhysicalNode.Division, PhysicalNode.Downsample, PhysicalNode.Empty, PhysicalNode.Fixpoint, PhysicalNode.IntervalJoin, PhysicalNode.Iterate, PhysicalNode.Join, PhysicalNode.JoinAlgorithm, PhysicalNode.JoinKeys, PhysicalNode.JoinKind, PhysicalNode.LateralJoin, PhysicalNode.Limit, PhysicalNode.Optimize, PhysicalNode.Path, PhysicalNode.Pivot, PhysicalNode.Project, PhysicalNode.PushedScan, PhysicalNode.RecursiveRef, PhysicalNode.Rename, PhysicalNode.ReservoirSample, PhysicalNode.Scan, PhysicalNode.Select, PhysicalNode.Sessionize, PhysicalNode.SetKind, PhysicalNode.SetOp, PhysicalNode.Solve, PhysicalNode.Sort, PhysicalNode.Spool, PhysicalNode.TopK, PhysicalNode.Trace, PhysicalNode.Tree, PhysicalNode.Universal, PhysicalNode.Unnest, PhysicalNode.Unpivot, PhysicalNode.Why, PhysicalNode.Window

Constructor Summary

Constructors

Constructor	Description
Cluster(Schema schema, String fromColumn, String toColumn, String labelColumn, PhysicalNode input)	Creates an instance of a Cluster record class.

Method Summary

Modifier and Type	Method	Description
List<PhysicalNode>	children()	Direct child plans, left-to-right; empty for a PhysicalNode.Scan.
final boolean	equals(Object o)	Indicates whether some other object is "equal to" this one.
String	fromColumn()	Returns the value of the fromColumn record component.
final int	hashCode()	Returns a hash code value for this object.
PhysicalNode	input()	Returns the value of the input record component.
String	labelColumn()	Returns the value of the labelColumn record component.
Schema	schema()	Returns the value of the schema record component.
String	toColumn()	Returns the value of the toColumn record component.
final String	toString()	Returns a string representation of this record class.

Methods inherited from class java.lang.Object

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

Methods inherited from interface com.darkcollective.relix.plan.PhysicalNode

deliveredOrdering, mapChildren

Constructor Details

Cluster

public Cluster(Schema schema,
 String fromColumn,
 String toColumn,
 String labelColumn,
 PhysicalNode input)

Creates an instance of a Cluster record class.

Parameters:

schema - the value for the schema record component

fromColumn - the value for the fromColumn record component

toColumn - the value for the toColumn record component

labelColumn - the value for the labelColumn record component

input - the value for the input record component

Method Details

children

public List<PhysicalNode> children()

Description copied from interface: PhysicalNode

Direct child plans, left-to-right; empty for a PhysicalNode.Scan.

Specified by:

children in interface PhysicalNode

toString

public final String toString()

Returns a string representation of this record class. The representation contains the name of the class, followed by the name and value of each of the record components.

Specified by:

toString in class Record

Returns:

a string representation of this object

hashCode

public final int hashCode()

Returns a hash code value for this object. The value is derived from the hash code of each of the record components.

Specified by:

hashCode in class Record

Returns:

a hash code value for this object

equals

public final boolean equals(Object o)

Indicates whether some other object is "equal to" this one. The objects are equal if the other object is of the same class and if all the record components are equal. All components in this record class are compared with Objects::equals(Object,Object).

Specified by:

equals in class Record

Parameters:

o - the object with which to compare

Returns:

true if this object is the same as the o argument; false otherwise.

schema

public Schema schema()

Returns the value of the schema record component.

Specified by:

schema in interface PhysicalNode

Returns:

the value of the schema record component

fromColumn

public String fromColumn()

Returns the value of the fromColumn record component.

Returns:

the value of the fromColumn record component

toColumn

public String toColumn()

Returns the value of the toColumn record component.

Returns:

the value of the toColumn record component

labelColumn

public String labelColumn()

Returns the value of the labelColumn record component.

Returns:

the value of the labelColumn record component

input

public PhysicalNode input()

Returns the value of the input record component.

Returns:

the value of the input record component