Package org.apache.calcite.rel.mutable

Class Holder

java.lang.Object

org.apache.calcite.rel.mutable.MutableRel

org.apache.calcite.rel.mutable.Holder

public class Holder
extends MutableRel

Implementation of MutableRel whose only purpose is to have a child. Used as the root of a tree.

Field Summary

Fields

Modifier and Type	Field	Description
protected MutableRel	input

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

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

Method Summary

Modifier and Type	Method	Description
void	childrenAccept(MutableRelVisitor visitor)
MutableRel	clone()
StringBuilder	digest(StringBuilder buf)
MutableRel	getInput()
List<MutableRel>	getInputs()
static Holder	of(MutableRel input)	Creates a Holder.
void	setInput(int ordinalInParent, MutableRel input)

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

deep, getParent, replaceInParent, toString

Methods inherited from class java.lang.Object

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

Field Details

input

protected MutableRel input

Method Details

of

public static Holder of(MutableRel input)

Creates a Holder.

Parameters:

input - Input relational expression

digest

public StringBuilder digest(StringBuilder buf)

Specified by:

digest in class MutableRel

clone

public MutableRel clone()

Specified by:

clone in class MutableRel

setInput

public void setInput(int ordinalInParent,
 MutableRel input)

Specified by:

setInput in class MutableRel

getInputs

public List<MutableRel> getInputs()

Specified by:

getInputs in class MutableRel

childrenAccept

public void childrenAccept(MutableRelVisitor visitor)

Specified by:

childrenAccept in class MutableRel

getInput

public MutableRel getInput()