Package io.deephaven.engine.table.impl.by.rollup

Class NullColumns

java.lang.Object

io.deephaven.engine.table.impl.by.rollup.RollupAggregationBase

io.deephaven.engine.table.impl.by.rollup.NullColumns

All Implemented Interfaces:

Aggregation, RollupAggregation

@Immutable
public abstract class NullColumns
extends RollupAggregationBase

RollupAggregation that allows columns to be nulled-out at higher aggregation levels.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static interface	NullColumns.Builder

Nested classes/interfaces inherited from interface io.deephaven.engine.table.impl.by.rollup.RollupAggregation

RollupAggregation.Visitor

Constructor Summary

Constructors

Constructor	Description
NullColumns()

Method Summary

Modifier and Type	Method	Description
static NullColumns.Builder	builder()
static NullColumns	from(Map<String,Class<?>> resultColumns)
static NullColumns	of(String name, Class<?> type)
abstract Map<String,Class<?>>	resultColumns()
final <V extends RollupAggregation.Visitor> V	walk(V visitor)

Methods inherited from class io.deephaven.engine.table.impl.by.rollup.RollupAggregationBase

walk

Methods inherited from class java.lang.Object

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

Constructor Details

NullColumns

public NullColumns()

Method Details

of

public static NullColumns of(String name,
 Class<?> type)

from

public static NullColumns from(Map<String,Class<?>> resultColumns)

builder

public static NullColumns.Builder builder()

resultColumns

public abstract Map<String,Class<?>> resultColumns()

walk

public final <V extends RollupAggregation.Visitor>
V walk(V visitor)