AggregateNode.NumericComparison (Apache Calcite API)

java.lang.Object
- org.apache.calcite.interpreter.AggregateNode.NumericComparison<T>

Type Parameters:

T - The numeric type

Direct Known Subclasses:

AggregateNode.MaxDouble, AggregateNode.MaxFloat, AggregateNode.MaxInt, AggregateNode.MaxLong, AggregateNode.MinDouble, AggregateNode.MinFloat, AggregateNode.MinInt, AggregateNode.MinLong

Enclosing class:

AggregateNode
```
public static class AggregateNode.NumericComparison<T>
extends java.lang.Object
```
Common implementation of comparison aggregate methods over numeric values as a user-defined aggregate.

Field Summary

Fields
Modifier and Type Field Description

private java.util.function.BiFunction<T,T,T> comparisonFunction

private T initialValue

Constructor Summary

Constructors
Constructor Description

NumericComparison(T initialValue, java.util.function.BiFunction<T,T,T> comparisonFunction)

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`T`	`add(T accumulator, T value)`
`T`	`init()`
`T`	`merge(T accumulator0, T accumulator1)`
`T`	`result(T accumulator)`

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

initialValue
```
private final T initialValue
```

comparisonFunction

private final java.util.function.BiFunction<T,T,T> comparisonFunction

Constructor Detail

NumericComparison

public NumericComparison(T initialValue,
                         java.util.function.BiFunction<T,T,T> comparisonFunction)

Method Detail

init
```
public T init()
```

add

public T add(T accumulator,
             T value)

merge

public T merge(T accumulator0,
               T accumulator1)

result
```
public T result(T accumulator)
```