Package org.apache.calcite.rel.core

Class Window.RexWinAggCall

java.lang.Object

org.apache.calcite.rex.RexNode

org.apache.calcite.rex.RexCall

org.apache.calcite.rel.core.Window.RexWinAggCall

Enclosing class:

Window

public static class Window.RexWinAggCall
extends RexCall

A call to a windowed aggregate function.

Belongs to a Window.Group.

It's a bastard son of a RexCall; similar enough that it gets visited by a RexVisitor, but it also has some extra data members.

Field Summary

Fields

Modifier and Type	Field	Description
boolean	distinct	Whether to eliminate duplicates before applying aggregate function.
int	ordinal	Ordinal of this aggregate within its partition.

Fields inherited from class org.apache.calcite.rex.RexCall

op, operands, type

Fields inherited from class org.apache.calcite.rex.RexNode

digest

Constructor Summary

Constructors

Constructor	Description
RexWinAggCall(SqlAggFunction aggFun, RelDataType type, java.util.List<RexNode> operands, int ordinal, boolean distinct)	Creates a RexWinAggCall.

Method Summary

Modifier and Type	Method	Description
RexCall	clone(RelDataType type, java.util.List<RexNode> operands)	Creates a new call to the same operator with different operands.
boolean	equals(java.lang.Object obj)
int	hashCode()

Methods inherited from class org.apache.calcite.rex.RexCall

accept, accept, computeDigest, getKind, getOperands, getOperator, getType, isAlwaysFalse, isAlwaysTrue, toString

Methods inherited from class org.apache.calcite.rex.RexNode

isA, isA

Methods inherited from class java.lang.Object

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

Field Detail

ordinal

public final int ordinal

Ordinal of this aggregate within its partition.

distinct

public final boolean distinct

Whether to eliminate duplicates before applying aggregate function.

Constructor Detail

RexWinAggCall

public RexWinAggCall(SqlAggFunction aggFun,
                     RelDataType type,
                     java.util.List<RexNode> operands,
                     int ordinal,
                     boolean distinct)

Creates a RexWinAggCall.

Parameters:

aggFun - Aggregate function

type - Result type

operands - Operands to call

ordinal - Ordinal within its partition

distinct - Eliminate duplicates before applying aggregate function

Method Detail

equals

public boolean equals(java.lang.Object obj)

Every node must implement RexNode.equals(java.lang.Object) based on its content

Override RexCall, defining equality based on identity.

Overrides:

equals in class RexCall

hashCode

public int hashCode()

Description copied from class: RexNode

Every node must implement RexNode.hashCode() consistent with RexNode.equals(java.lang.Object)

Overrides:

hashCode in class RexCall

clone

public RexCall clone(RelDataType type,
                     java.util.List<RexNode> operands)

Description copied from class: RexCall

Creates a new call to the same operator with different operands.

Overrides:

clone in class RexCall

Parameters:

type - Return type

operands - Operands to call

Returns:

New call