org.apache.calcite.rel.mutable

Class MutableSample

java.lang.Object

org.apache.calcite.rel.mutable.MutableRel

org.apache.calcite.rel.mutable.MutableSingleRel

org.apache.calcite.rel.mutable.MutableSample

public class MutableSample
extends MutableSingleRel

Mutable equivalent of Sample.

Field Summary

Fields

Modifier and Type	Field and Description
RelOptSamplingParameters	params

Fields inherited from class org.apache.calcite.rel.mutable.MutableSingleRel

input

Fields inherited from class org.apache.calcite.rel.mutable.MutableRel

cluster, ordinalInParent, PAIRWISE_STRING_EQUIVALENCE, parent, rowType, STRING_EQUIVALENCE, type

Constructor Summary

Constructors

Modifier	Constructor and Description
private	MutableSample(MutableRel input, RelOptSamplingParameters params)

Method Summary

Modifier and Type	Method and Description
MutableRel	clone()
StringBuilder	digest(StringBuilder buf)
boolean	equals(Object obj)
int	hashCode()
static MutableSample	of(MutableRel input, RelOptSamplingParameters params) Creates a MutableSample.

Methods inherited from class org.apache.calcite.rel.mutable.MutableSingleRel

childrenAccept, getInput, getInputs, setInput

Methods inherited from class org.apache.calcite.rel.mutable.MutableRel

deep, getParent, replaceInParent, toString

Methods inherited from class java.lang.Object

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

Field Detail

params

public final RelOptSamplingParameters params

Constructor Detail

MutableSample

private MutableSample(MutableRel input,
                      RelOptSamplingParameters params)

Method Detail

of

public static MutableSample of(MutableRel input,
                               RelOptSamplingParameters params)

Creates a MutableSample.

Parameters:

input - Input relational expression

params - parameters necessary to produce a sample of a relation

equals

public boolean equals(Object obj)

Overrides:

equals in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object

digest

public StringBuilder digest(StringBuilder buf)

Specified by:

digest in class MutableRel

clone

public MutableRel clone()

Specified by:

clone in class MutableRel